[Buildroot] [PATCH 0/7] RFC: ARC port

[Buildroot] [PATCH 0/7] RFC: ARC port

[Mischa Jonker]

Hi BuildRoot developers,

In the following patch series I've added ARC support to the "master" tree
of BuildRoot. As ARC support is not yet in all upstream open source packages,
I've taken the freedom to add an option for an additional download site, from
which ARC-specific versions of gcc, binutils, etc. can be downloaded.

ARC will be in Linux 3.9, so that would be the first package that can be
removed from this ARC-specific download site.

The below patchset builds the toolchain, and a working root file system. Most
simple packages build OK, but mplayer for instance does not have ARC support,
and there are probably others as well.

Could you please have a look at the patches and let me know what to do to
make them BuildRoot-worthy?

Thanks,

Mischa

Mischa Jonker (7):
  arc: Add ARC and ARC BE architecture
  arc: Add option for ARC-specific download site
  arc: Add support for ARC-specific binutils
  arc: Add ARC specific kernel headers
  arc: Add support for ARC-specific GCC
  arc: Add support for ARC-specific uClibc
  arc: Make sure that libgcc doesn't get included when it doesn't exist
    yet

 Config.in                                          |    9 +
 Makefile                                           |    1 +
 arch/Config.in                                     |   18 ++
 arch/Config.in.arc                                 |   10 +
 package/binutils/Config.in.host                    |   17 +-
 .../300-001_ld_makefile_patch.patch                |   24 ++
 .../300-012_check_ldrunpath_length.patch           |   21 ++
 .../binutils/binutils-2.19-arc/500-sysroot.patch   |   36 +++
 package/binutils/binutils.mk                       |    3 +
 support/gnuconfig/config.sub                       |    4 +-
 toolchain/Config.in                                |    3 +-
 .../gcc/4.4.7-arc/fix_branch_out_of_range.patch    |   22 ++
 toolchain/gcc/Config.in                            |   22 +-
 toolchain/gcc/gcc-uclibc-4.x.mk                    |    4 +
 toolchain/kernel-headers/Config.in                 |   19 +-
 toolchain/kernel-headers/kernel-headers.mk         |    4 +-
 toolchain/uClibc/Config.in                         |   12 +-
 toolchain/uClibc/uClibc-0.9.33-arc.config          |  251 ++++++++++++++++++++
 toolchain/uClibc/uclibc.mk                         |   14 +-
 19 files changed, 466 insertions(+), 28 deletions(-)
 create mode 100644 arch/Config.in.arc
 create mode 100644 package/binutils/binutils-2.19-arc/300-001_ld_makefile_patch.patch
 create mode 100644 package/binutils/binutils-2.19-arc/300-012_check_ldrunpath_length.patch
 create mode 100644 package/binutils/binutils-2.19-arc/500-sysroot.patch
 create mode 100644 toolchain/gcc/4.4.7-arc/fix_branch_out_of_range.patch
 create mode 100644 toolchain/uClibc/uClibc-0.9.33-arc.config

[Buildroot] [PATCH 1/7] arc: Add ARC and ARC BE architecture

[Mischa Jonker]

Synopsys' DesignWare ARC Processor Cores are a family of 32-bit CPUs that
can be used from deeply embedded to high performance host applications.

Signed-off-by: Mischa Jonker <mjonker@synopsys.com>
---
 arch/Config.in     |   18 ++++++++++++++++++
 arch/Config.in.arc |   10 ++++++++++
 2 files changed, 28 insertions(+), 0 deletions(-)
 create mode 100644 arch/Config.in.arc

diff --git a/arch/Config.in b/arch/Config.in
index 795f24f..46edbab 100644
--- a/arch/Config.in
+++ b/arch/Config.in
@@ -7,6 +7,20 @@ choice
 	help
 	  Select the target architecture family to build for.
 
+config BR2_arc
+	bool "ARC (little endian)"
+	help
+	  Synopsys' DesignWare ARC Processor Cores are a family of 32-bit CPUs
+	  that can be used from deeply embedded to high performance host
+	  applications. Little endian.
+
+config BR2_arceb
+	bool "ARC (big endian)"
+	help
+	  Synopsys' DesignWare ARC Processor Cores are a family of 32-bit CPUs
+	  that can be used from deeply embedded to high performance host
+	  applications. Big endian.
+
 config BR2_arm
 	bool "ARM (little endian)"
 	help
@@ -175,6 +189,10 @@ config BR2_GCC_TARGET_ABI
 config BR2_GCC_TARGET_CPU
 	string
 
+if BR2_arc || BR2_arceb
+source "arch/Config.in.arc"
+endif
+
 if BR2_arm || BR2_armeb
 source "arch/Config.in.arm"
 endif
diff --git a/arch/Config.in.arc b/arch/Config.in.arc
new file mode 100644
index 0000000..80b2dc4
--- /dev/null
+++ b/arch/Config.in.arc
@@ -0,0 +1,10 @@
+config BR2_ARCH
+	default "arc"	if BR2_arc
+	default "arceb"	if BR2_arceb
+
+config BR2_ENDIAN
+	default "LITTLE" if BR2_arc
+	default "BIG"	 if BR2_arceb
+
+config BR2_GCC_TARGET_CPU
+	default "arc700"
-- 
1.7.0.4

[Buildroot] [PATCH 1/7] arc: Add ARC and ARC BE architecture

[Thomas Petazzoni]

Dear Mischa Jonker,

On Mon, 22 Apr 2013 13:37:25 +0200, Mischa Jonker wrote:
> Synopsys' DesignWare ARC Processor Cores are a family of 32-bit CPUs that
> can be used from deeply embedded to high performance host applications.
> 
> Signed-off-by: Mischa Jonker <mjonker@synopsys.com>

Looks good to me.

Reviewed-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
-- 
Thomas Petazzoni, Free Electrons
Kernel, drivers, real-time and embedded Linux
development, consulting, training and support.
http://free-electrons.com

[Buildroot] [PATCH 1/7] arc: Add ARC and ARC BE architecture

[Arnout Vandecappelle]

On 22/04/13 13:37, Mischa Jonker wrote:
> +config BR2_arc
> +	bool "ARC (little endian)"
> +	help
> +	  Synopsys' DesignWare ARC Processor Cores are a family of 32-bit CPUs
> +	  that can be used from deeply embedded to high performance host
> +	  applications. Little endian.

  Wouldn't it make more sense to have explicit BR2_arcel and BR2_arcbe 
symbols that implicitly select BR2_arc, similar to microblaze? that 
avoids mistakes like you made in a later patch :-)

  Regards,
  Arnout

-- 
Arnout Vandecappelle                          arnout at mind be
Senior Embedded Software Architect            +32-16-286500
Essensium/Mind                                http://www.mind.be
G.Geenslaan 9, 3001 Leuven, Belgium           BE 872 984 063 RPR Leuven
LinkedIn profile: http://www.linkedin.com/in/arnoutvandecappelle
GPG fingerprint:  7CB5 E4CC 6C2E EFD4 6E3D A754 F963 ECAB 2450 2F1F

[Buildroot] [PATCH 2/7] arc: Add option for ARC-specific download site

[Mischa Jonker]

As ARC support is not yet in all upstream packages, a different location is
required to download the packages from. This adds an option to specify a
site for ARC-specific versions of packages such as binutils, gcc.

When ARC support has been upstreamed for all packages, this option can be
removed again.

Signed-off-by: Mischa Jonker <mjonker@synopsys.com>
---
 Config.in |    9 +++++++++
 1 files changed, 9 insertions(+), 0 deletions(-)

diff --git a/Config.in b/Config.in
index bbb9885..c365b38 100644
--- a/Config.in
+++ b/Config.in
@@ -141,6 +141,15 @@ config BR2_PRIMARY_SITE
 	  NOTE: This works for all packages using the central package
 	  infrastructure (generic, autotools, cmake, ...)
 
+config BR2_ARC_SITE
+	string "Download site for ARC specific packages"
+	default "http://www.synopsys.com/apps/arc-developer/"
+	depends on BR2_arc || BR2_arceb
+	help
+	  This download site is used for packages that require specific
+	  support for ARC, while this support is not yet pushed to the
+	  respective open source project.
+
 config BR2_PRIMARY_SITE_ONLY
 	bool "Only allow downloads from primary download site"
 	depends on BR2_PRIMARY_SITE != ""
-- 
1.7.0.4

[Buildroot] [PATCH 2/7] arc: Add option for ARC-specific download site

[Thomas Petazzoni]

Dear Mischa Jonker,

On Mon, 22 Apr 2013 13:37:26 +0200, Mischa Jonker wrote:

> +config BR2_ARC_SITE
> +	string "Download site for ARC specific packages"
> +	default "http://www.synopsys.com/apps/arc-developer/"
> +	depends on BR2_arc || BR2_arceb
> +	help
> +	  This download site is used for packages that require specific
> +	  support for ARC, while this support is not yet pushed to the
> +	  respective open source project.

Is there some realistic case for which this URL would need to be
changed by the user? I think I'd prefer to hardcode the URL in the
binutils/gcc/uClibc recipes, just like we do a special casing for
AVR32, unless of course there is some compelling reason for making this
configurable.

Best regards,

Thomas
-- 
Thomas Petazzoni, Free Electrons
Kernel, drivers, real-time and embedded Linux
development, consulting, training and support.
http://free-electrons.com

[Buildroot] [PATCH 2/7] arc: Add option for ARC-specific download site

[Arnout Vandecappelle]

On 22/04/13 17:48, Thomas Petazzoni wrote:
> Dear Mischa Jonker,
>
> On Mon, 22 Apr 2013 13:37:26 +0200, Mischa Jonker wrote:
>
>> >+config BR2_ARC_SITE
>> >+	string "Download site for ARC specific packages"
>> >+	default"http://www.synopsys.com/apps/arc-developer/"
>> >+	depends on BR2_arc || BR2_arceb
>> >+	help
>> >+	  This download site is used for packages that require specific
>> >+	  support for ARC, while this support is not yet pushed to the
>> >+	  respective open source project.
> Is there some realistic case for which this URL would need to be
> changed by the user? I think I'd prefer to hardcode the URL in the
> binutils/gcc/uClibc recipes, just like we do a special casing for
> AVR32, unless of course there is some compelling reason for making this
> configurable.

  +1 on that.

  But it may make sense to define the base URL once in some .mk file and 
use it in the other locations. You probably don't need to worry about the 
order of .mk file inclusion because the variable will only be expanded 
when a rule is executed, not when the .mk files are parsed. So it should 
be safe to define it in e.g. the toolchain/gcc/gcc.mk and use it in binutils.

  Regards,
  Arnout
-- 
Arnout Vandecappelle                          arnout at mind be
Senior Embedded Software Architect            +32-16-286500
Essensium/Mind                                http://www.mind.be
G.Geenslaan 9, 3001 Leuven, Belgium           BE 872 984 063 RPR Leuven
LinkedIn profile: http://www.linkedin.com/in/arnoutvandecappelle
GPG fingerprint:  7CB5 E4CC 6C2E EFD4 6E3D A754 F963 ECAB 2450 2F1F

[Buildroot] [PATCH 3/7] arc: Add support for ARC-specific binutils

[Mischa Jonker]

ARC support is not upstream yet...

Signed-off-by: Mischa Jonker <mjonker@synopsys.com>
---
 package/binutils/Config.in.host                    |   17 ++++++---
 .../300-001_ld_makefile_patch.patch                |   24 +++++++++++++
 .../300-012_check_ldrunpath_length.patch           |   21 +++++++++++
 .../binutils/binutils-2.19-arc/500-sysroot.patch   |   36 ++++++++++++++++++++
 package/binutils/binutils.mk                       |    3 ++
 5 files changed, 95 insertions(+), 6 deletions(-)
 create mode 100644 package/binutils/binutils-2.19-arc/300-001_ld_makefile_patch.patch
 create mode 100644 package/binutils/binutils-2.19-arc/300-012_check_ldrunpath_length.patch
 create mode 100644 package/binutils/binutils-2.19-arc/500-sysroot.patch

diff --git a/package/binutils/Config.in.host b/package/binutils/Config.in.host
index a61a503..b634796 100644
--- a/package/binutils/Config.in.host
+++ b/package/binutils/Config.in.host
@@ -12,28 +12,32 @@ choice
 	       depends on BR2_avr32
 	       bool "binutils 2.18-avr32-1.0.1"
 
+	config BR2_BINUTILS_VERSION_2_19_ARC
+		depends on BR2_arc || BR2_arceb
+		bool "binutils 2.19-arc"
+
 	config BR2_BINUTILS_VERSION_2_20_1
-		depends on !BR2_avr32
+		depends on !(BR2_arc || BR2_arceb || BR2_avr32)
 		bool "binutils 2.20.1"
 
 	config BR2_BINUTILS_VERSION_2_21
-		depends on !BR2_avr32
+		depends on !(BR2_arc || BR2_arceb || BR2_avr32)
 		bool "binutils 2.21"
 
 	config BR2_BINUTILS_VERSION_2_21_1
-		depends on !(BR2_avr32 || BR2_UCLIBC_VERSION_0_9_31)
+		depends on !(BR2_arc || BR2_arceb || BR2_avr32 || BR2_UCLIBC_VERSION_0_9_31)
 		bool "binutils 2.21.1"
 
 	config BR2_BINUTILS_VERSION_2_22
-		depends on !(BR2_avr32 || BR2_UCLIBC_VERSION_0_9_31)
+		depends on !(BR2_arc || BR2_arceb || BR2_avr32 || BR2_UCLIBC_VERSION_0_9_31)
 		bool "binutils 2.22"
 
 	config BR2_BINUTILS_VERSION_2_23_1
-		depends on !(BR2_avr32 || BR2_UCLIBC_VERSION_0_9_31)
+		depends on !(BR2_arc || BR2_arceb || BR2_avr32 || BR2_UCLIBC_VERSION_0_9_31)
 		bool "binutils 2.23.1"
 
 	config BR2_BINUTILS_VERSION_2_23_2
-		depends on !(BR2_avr32 || BR2_UCLIBC_VERSION_0_9_31)
+		depends on !(BR2_arc || BR2_arceb || BR2_avr32 || BR2_UCLIBC_VERSION_0_9_31)
 		bool "binutils 2.23.2"
 
 endchoice
@@ -41,6 +45,7 @@ endchoice
 config BR2_BINUTILS_VERSION
 	string
 	default "2.18-avr32-1.0.1" if BR2_BINUTILS_VERSION_2_18_AVR32_1_0_1
+	default "2.19-arc"	if BR2_BINUTILS_VERSION_2_19_ARC
 	default "2.20.1"	if BR2_BINUTILS_VERSION_2_20_1
 	default "2.21"		if BR2_BINUTILS_VERSION_2_21
 	default "2.21.1"	if BR2_BINUTILS_VERSION_2_21_1
diff --git a/package/binutils/binutils-2.19-arc/300-001_ld_makefile_patch.patch b/package/binutils/binutils-2.19-arc/300-001_ld_makefile_patch.patch
new file mode 100644
index 0000000..5cb0f61
--- /dev/null
+++ b/package/binutils/binutils-2.19-arc/300-001_ld_makefile_patch.patch
@@ -0,0 +1,24 @@
+diff -u binutils-2.17.50.0.17.oorig/ld/Makefile.am binutils-2.17.50.0.17/ld/Makefile.am
+--- binutils-2.17.50.0.17.oorig/ld/Makefile.am	2007-06-18 19:29:29.000000000 +0200
++++ binutils-2.17.50.0.17/ld/Makefile.am	2007-06-25 10:00:36.000000000 +0200
+@@ -18,7 +18,7 @@
+ # We put the scripts in the directory $(scriptdir)/ldscripts.
+ # We can't put the scripts in $(datadir) because the SEARCH_DIR
+ # directives need to be different for native and cross linkers.
+-scriptdir = $(tooldir)/lib
++scriptdir = $(libdir)
+ 
+ EMUL = @EMUL@
+ EMULATION_OFILES = @EMULATION_OFILES@
+diff -u binutils-2.17.50.0.17.oorig/ld/Makefile.in binutils-2.17.50.0.17/ld/Makefile.in
+--- binutils-2.17.50.0.17.oorig/ld/Makefile.in	2007-06-18 19:29:29.000000000 +0200
++++ binutils-2.17.50.0.17/ld/Makefile.in	2007-06-25 10:00:36.000000000 +0200
+@@ -287,7 +287,7 @@
+ # We put the scripts in the directory $(scriptdir)/ldscripts.
+ # We can't put the scripts in $(datadir) because the SEARCH_DIR
+ # directives need to be different for native and cross linkers.
+-scriptdir = $(tooldir)/lib
++scriptdir = $(libdir)
+ BASEDIR = $(srcdir)/..
+ BFDDIR = $(BASEDIR)/bfd
+ INCDIR = $(BASEDIR)/include
diff --git a/package/binutils/binutils-2.19-arc/300-012_check_ldrunpath_length.patch b/package/binutils/binutils-2.19-arc/300-012_check_ldrunpath_length.patch
new file mode 100644
index 0000000..6e80921
--- /dev/null
+++ b/package/binutils/binutils-2.19-arc/300-012_check_ldrunpath_length.patch
@@ -0,0 +1,21 @@
+diff -u binutils-2.17.50.0.17.oorig/ld/emultempl/elf32.em binutils-2.17.50.0.17/ld/emultempl/elf32.em
+--- binutils-2.17.50.0.17.oorig/ld/emultempl/elf32.em	2007-06-18 19:31:40.000000000 +0200
++++ binutils-2.17.50.0.17/ld/emultempl/elf32.em	2007-06-25 10:01:25.000000000 +0200
+@@ -1007,6 +1007,8 @@
+ 	      && command_line.rpath == NULL)
+ 	    {
+ 	      lib_path = (const char *) getenv ("LD_RUN_PATH");
++	      if ((lib_path) && (strlen (lib_path) == 0))
++		  lib_path = NULL;
+ 	      if (gld${EMULATION_NAME}_search_needed (lib_path, &n,
+ 						      force))
+ 		break;
+@@ -1191,6 +1193,8 @@
+   rpath = command_line.rpath;
+   if (rpath == NULL)
+     rpath = (const char *) getenv ("LD_RUN_PATH");
++  if ((rpath) && (strlen (rpath) == 0))
++      rpath = NULL;
+   if (! (bfd_elf_size_dynamic_sections
+ 	 (output_bfd, command_line.soname, rpath,
+ 	  command_line.filter_shlib,
diff --git a/package/binutils/binutils-2.19-arc/500-sysroot.patch b/package/binutils/binutils-2.19-arc/500-sysroot.patch
new file mode 100644
index 0000000..d21e4cb
--- /dev/null
+++ b/package/binutils/binutils-2.19-arc/500-sysroot.patch
@@ -0,0 +1,36 @@
+Signed-off-by: Sven Rebhan <odinshorse@googlemail.com>
+
+Always try to prepend the sysroot prefix to absolute filenames first.
+
+http://bugs.gentoo.org/275666
+http://sourceware.org/bugzilla/show_bug.cgi?id=10340
+
+--- a/ld/ldfile.c
++++ b/ld/ldfile.c
+@@ -308,18 +308,24 @@
+      directory first.  */
+   if (! entry->is_archive)
+     {
+-      if (entry->sysrooted && IS_ABSOLUTE_PATH (entry->filename))
++      /* For absolute pathnames, try to always open the file in the
++	 sysroot first. If this fails, try to open the file at the
++	 given location. */
++      entry->sysrooted = is_sysrooted_pathname(entry->filename, FALSE);
++      if (IS_ABSOLUTE_PATH (entry->filename) && ld_sysroot && ! entry->sysrooted)
+ 	{
+ 	  char *name = concat (ld_sysroot, entry->filename,
+ 			       (const char *) NULL);
+ 	  if (ldfile_try_open_bfd (name, entry))
+ 	    {
+ 	      entry->filename = name;
++	      entry->sysrooted = TRUE;
+ 	      return TRUE;
+ 	    }
+ 	  free (name);
+ 	}
+-      else if (ldfile_try_open_bfd (entry->filename, entry))
++
++      if (ldfile_try_open_bfd (entry->filename, entry))
+ 	{
+ 	  entry->sysrooted = IS_ABSOLUTE_PATH (entry->filename)
+ 	    && is_sysrooted_pathname (entry->filename, TRUE);
diff --git a/package/binutils/binutils.mk b/package/binutils/binutils.mk
index 92e0a74..d387c27 100644
--- a/package/binutils/binutils.mk
+++ b/package/binutils/binutils.mk
@@ -26,6 +26,9 @@ BINUTILS_SITE = $(BR2_GNU_MIRROR)/binutils
 ifeq ($(ARCH),avr32)
 BINUTILS_SITE = ftp://www.at91.com/pub/buildroot
 endif
+ifeq ($(ARCH),arc)
+BINUTILS_SITE = $(BR2_ARC_SITE)
+endif
 BINUTILS_EXTRA_CONFIG_OPTIONS = $(call qstrip,$(BR2_BINUTILS_EXTRA_CONFIG_OPTIONS))
 BINUTILS_INSTALL_STAGING = YES
 BINUTILS_DEPENDENCIES = $(if $(BR2_NEEDS_GETTEXT_IF_LOCALE),gettext)
-- 
1.7.0.4

[Buildroot] [PATCH 3/7] arc: Add support for ARC-specific binutils

[Thomas Petazzoni]

Dear Mischa Jonker,

On Mon, 22 Apr 2013 13:37:27 +0200, Mischa Jonker wrote:
> ARC support is not upstream yet...
> 
> Signed-off-by: Mischa Jonker <mjonker@synopsys.com>

This looks good, but it doesn't build here: it fails because 'makeinfo'
is not available.

WARNING: `makeinfo' is missing on your system.  You should only need it if
         you modified a `.texi' or `.texinfo' file, or any other file
         indirectly affecting the aspect of the manual.  The spurious
         call might also be the consequence of using a buggy `make' (AIX,
         DU, IRIX).  You might want to install the `Texinfo' package or
         the `GNU make' package.  Grab either from any GNU archive site.
[...]
make[2]: *** [all] Error 2
make[1]: *** [/home/test/outputs/arc/build/host-binutils-2.19-arc/.stamp_built] Error 2
make: *** [all] Error 2

makeinfo is no longer a mandatory dependency of Buildroot, and
therefore we've removed it from our autobuilder chroots. binutils 2.22
builds fine without it, it seems like binutils 2.19 will need a few
more tricks.

Thomas
-- 
Thomas Petazzoni, Free Electrons
Kernel, drivers, real-time and embedded Linux
development, consulting, training and support.
http://free-electrons.com

[Buildroot] [PATCH 3/7] arc: Add support for ARC-specific binutils

[Arnout Vandecappelle]

On 22/04/13 13:37, Mischa Jonker wrote:
> ARC support is not upstream yet...
>
> Signed-off-by: Mischa Jonker <mjonker@synopsys.com>
> ---
>   package/binutils/Config.in.host                    |   17 ++++++---
>   .../300-001_ld_makefile_patch.patch                |   24 +++++++++++++
>   .../300-012_check_ldrunpath_length.patch           |   21 +++++++++++
>   .../binutils/binutils-2.19-arc/500-sysroot.patch   |   36 ++++++++++++++++++++
>   package/binutils/binutils.mk                       |    3 ++
>   5 files changed, 95 insertions(+), 6 deletions(-)
>   create mode 100644 package/binutils/binutils-2.19-arc/300-001_ld_makefile_patch.patch
>   create mode 100644 package/binutils/binutils-2.19-arc/300-012_check_ldrunpath_length.patch
>   create mode 100644 package/binutils/binutils-2.19-arc/500-sysroot.patch
>
> diff --git a/package/binutils/Config.in.host b/package/binutils/Config.in.host
> index a61a503..b634796 100644
> --- a/package/binutils/Config.in.host
> +++ b/package/binutils/Config.in.host
> @@ -12,28 +12,32 @@ choice
>   	       depends on BR2_avr32
>   	       bool "binutils 2.18-avr32-1.0.1"
>
> +	config BR2_BINUTILS_VERSION_2_19_ARC
> +		depends on BR2_arc || BR2_arceb
> +		bool "binutils 2.19-arc"
> +

  Do you expect that there actually will be several binutils versions for 
ARC (until it's accepted upstream, obviously)? If not, then I'd prefer to 
make the whole choice depend on !BR2_arc and define this config outside 
of the choice (and without prompt). If later on there turns out to be 
another binutils version with ARC support, it can easily be moved inside 
the choice.

>   	config BR2_BINUTILS_VERSION_2_20_1
> -		depends on !BR2_avr32
> +		depends on !(BR2_arc || BR2_arceb || BR2_avr32)
>   		bool "binutils 2.20.1"
>
>   	config BR2_BINUTILS_VERSION_2_21
> -		depends on !BR2_avr32
> +		depends on !(BR2_arc || BR2_arceb || BR2_avr32)
>   		bool "binutils 2.21"
>
>   	config BR2_BINUTILS_VERSION_2_21_1
> -		depends on !(BR2_avr32 || BR2_UCLIBC_VERSION_0_9_31)
> +		depends on !(BR2_arc || BR2_arceb || BR2_avr32 || BR2_UCLIBC_VERSION_0_9_31)
>   		bool "binutils 2.21.1"
>
>   	config BR2_BINUTILS_VERSION_2_22
> -		depends on !(BR2_avr32 || BR2_UCLIBC_VERSION_0_9_31)
> +		depends on !(BR2_arc || BR2_arceb || BR2_avr32 || BR2_UCLIBC_VERSION_0_9_31)
>   		bool "binutils 2.22"
>
>   	config BR2_BINUTILS_VERSION_2_23_1
> -		depends on !(BR2_avr32 || BR2_UCLIBC_VERSION_0_9_31)
> +		depends on !(BR2_arc || BR2_arceb || BR2_avr32 || BR2_UCLIBC_VERSION_0_9_31)
>   		bool "binutils 2.23.1"
>
>   	config BR2_BINUTILS_VERSION_2_23_2
> -		depends on !(BR2_avr32 || BR2_UCLIBC_VERSION_0_9_31)
> +		depends on !(BR2_arc || BR2_arceb || BR2_avr32 || BR2_UCLIBC_VERSION_0_9_31)
>   		bool "binutils 2.23.2"
>
>   endchoice
> @@ -41,6 +45,7 @@ endchoice
>   config BR2_BINUTILS_VERSION
>   	string
>   	default "2.18-avr32-1.0.1" if BR2_BINUTILS_VERSION_2_18_AVR32_1_0_1
> +	default "2.19-arc"	if BR2_BINUTILS_VERSION_2_19_ARC
>   	default "2.20.1"	if BR2_BINUTILS_VERSION_2_20_1
>   	default "2.21"		if BR2_BINUTILS_VERSION_2_21
>   	default "2.21.1"	if BR2_BINUTILS_VERSION_2_21_1
> diff --git a/package/binutils/binutils-2.19-arc/300-001_ld_makefile_patch.patch b/package/binutils/binutils-2.19-arc/300-001_ld_makefile_patch.patch
> new file mode 100644
> index 0000000..5cb0f61
> --- /dev/null
> +++ b/package/binutils/binutils-2.19-arc/300-001_ld_makefile_patch.patch

  Please add the equivalent of a commit message to the patches: single 
line short description, blank line, extended explanation, blank line, 
Signed-off-by line. See docs/manual/patch-policy.txt

> @@ -0,0 +1,24 @@
> +diff -u binutils-2.17.50.0.17.oorig/ld/Makefile.am binutils-2.17.50.0.17/ld/Makefile.am
> +--- binutils-2.17.50.0.17.oorig/ld/Makefile.am	2007-06-18 19:29:29.000000000 +0200
> ++++ binutils-2.17.50.0.17/ld/Makefile.am	2007-06-25 10:00:36.000000000 +0200
                   ^^ This doesn't seem right...

> +@@ -18,7 +18,7 @@
> + # We put the scripts in the directory $(scriptdir)/ldscripts.
> + # We can't put the scripts in $(datadir) because the SEARCH_DIR
> + # directives need to be different for native and cross linkers.
> +-scriptdir = $(tooldir)/lib
> ++scriptdir = $(libdir)
> +
> + EMUL = @EMUL@
> + EMULATION_OFILES = @EMULATION_OFILES@

  Otherwise, looks good.


  Regards,
  Arnout

[snip]



-- 
Arnout Vandecappelle                          arnout at mind be
Senior Embedded Software Architect            +32-16-286500
Essensium/Mind                                http://www.mind.be
G.Geenslaan 9, 3001 Leuven, Belgium           BE 872 984 063 RPR Leuven
LinkedIn profile: http://www.linkedin.com/in/arnoutvandecappelle
GPG fingerprint:  7CB5 E4CC 6C2E EFD4 6E3D A754 F963 ECAB 2450 2F1F

[Buildroot] [PATCH 3/7] arc: Add support for ARC-specific binutils

[Arnout Vandecappelle]

On 22/04/13 13:37, Mischa Jonker wrote:
[snip]
> diff --git a/package/binutils/binutils.mk b/package/binutils/binutils.mk
> index 92e0a74..d387c27 100644
> --- a/package/binutils/binutils.mk
> +++ b/package/binutils/binutils.mk
> @@ -26,6 +26,9 @@ BINUTILS_SITE = $(BR2_GNU_MIRROR)/binutils
>   ifeq ($(ARCH),avr32)
>   BINUTILS_SITE =ftp://www.at91.com/pub/buildroot
>   endif
> +ifeq ($(ARCH),arc)

  What about arceb?


  Regards,
  Arnout
> +BINUTILS_SITE = $(BR2_ARC_SITE)
> +endif
>   BINUTILS_EXTRA_CONFIG_OPTIONS = $(call qstrip,$(BR2_BINUTILS_EXTRA_CONFIG_OPTIONS))
>   BINUTILS_INSTALL_STAGING = YES
>   BINUTILS_DEPENDENCIES = $(if $(BR2_NEEDS_GETTEXT_IF_LOCALE),gettext)


-- 
Arnout Vandecappelle                          arnout at mind be
Senior Embedded Software Architect            +32-16-286500
Essensium/Mind                                http://www.mind.be
G.Geenslaan 9, 3001 Leuven, Belgium           BE 872 984 063 RPR Leuven
LinkedIn profile: http://www.linkedin.com/in/arnoutvandecappelle
GPG fingerprint:  7CB5 E4CC 6C2E EFD4 6E3D A754 F963 ECAB 2450 2F1F

[Buildroot] [PATCH 4/7] arc: Add ARC specific kernel headers

[Mischa Jonker]

ARC architecture will be on kernel.org from 3.9 onwards. For now
we still need to use a out-of-tree kernel tarball.

Signed-off-by: Mischa Jonker <mjonker@synopsys.com>
---
 Makefile                                   |    1 +
 toolchain/kernel-headers/Config.in         |   19 ++++++++++++++-----
 toolchain/kernel-headers/kernel-headers.mk |    4 +++-
 3 files changed, 18 insertions(+), 6 deletions(-)

diff --git a/Makefile b/Makefile
index 0a91658..8fef492 100644
--- a/Makefile
+++ b/Makefile
@@ -238,6 +238,7 @@ ARCH:=$(call qstrip,$(BR2_ARCH))
 
 KERNEL_ARCH:=$(shell echo "$(ARCH)" | sed -e "s/-.*//" \
 	-e s/i.86/i386/ -e s/sun4u/sparc64/ \
+	-e s/arc.*/arc/ \
 	-e s/arm.*/arm/ -e s/sa110/arm/ \
 	-e s/aarch64/arm64/ \
 	-e s/bfin/blackfin/ \
diff --git a/toolchain/kernel-headers/Config.in b/toolchain/kernel-headers/Config.in
index ec75c34..7db815b 100644
--- a/toolchain/kernel-headers/Config.in
+++ b/toolchain/kernel-headers/Config.in
@@ -7,6 +7,7 @@ comment "Kernel Header Options"
 choice
 	prompt "Kernel Headers"
 	default BR2_KERNEL_HEADERS_3_8
+	default BR2_KERNEL_HEADERS_3_8_ARC	if (BR2_arc || BR2_arceb)
 	help
 	  Select the version of kernel header files you wish to use.
 	  You must select the correct set of header files to match
@@ -17,35 +18,42 @@ choice
 
 	config BR2_KERNEL_HEADERS_3_0
 		bool "Linux 3.0.x kernel headers"
+		depends on !(BR2_arc || BR2_arceb)
 
 	config BR2_KERNEL_HEADERS_3_1
 		bool "Linux 3.1.x kernel headers"
-		depends on BR2_DEPRECATED
+		depends on BR2_DEPRECATED && !(BR2_arc || BR2_arceb)
 
 	config BR2_KERNEL_HEADERS_3_2
 		bool "Linux 3.2.x kernel headers"
+		depends on !(BR2_arc || BR2_arceb)
 
 	config BR2_KERNEL_HEADERS_3_3
 		bool "Linux 3.3.x kernel headers"
-		depends on BR2_DEPRECATED
+		depends on BR2_DEPRECATED && !(BR2_arc || BR2_arceb)
 
 	config BR2_KERNEL_HEADERS_3_4
 		bool "Linux 3.4.x kernel headers"
+		depends on !(BR2_arc || BR2_arceb)
 
 	config BR2_KERNEL_HEADERS_3_5
 		bool "Linux 3.5.x kernel headers"
-		depends on BR2_DEPRECATED
+		depends on BR2_DEPRECATED && !(BR2_arc || BR2_arceb)
 
 	config BR2_KERNEL_HEADERS_3_6
 		bool "Linux 3.6.x kernel headers"
-		depends on BR2_DEPRECATED
+		depends on BR2_DEPRECATED && !(BR2_arc || BR2_arceb)
 
 	config BR2_KERNEL_HEADERS_3_7
 		bool "Linux 3.7.x kernel headers"
-		depends on BR2_DEPRECATED
+		depends on BR2_DEPRECATED && !(BR2_arc || BR2_arceb)
 
 	config BR2_KERNEL_HEADERS_3_8
 		bool "Linux 3.8.x kernel headers"
+		depends on !(BR2_arc || BR2_arceb)
+	
+	config BR2_KERNEL_HEADERS_3_8_ARC
+		bool "Linux 3.8-arc kernel headers"
 
 	config BR2_KERNEL_HEADERS_VERSION
 		bool "Manually specified Linux version"
@@ -72,5 +80,6 @@ config BR2_DEFAULT_KERNEL_HEADERS
 	default "3.6.11"	if BR2_KERNEL_HEADERS_3_6
 	default "3.7.10"	if BR2_KERNEL_HEADERS_3_7
 	default "3.8.8"		if BR2_KERNEL_HEADERS_3_8
+	default "3.8-arc"	if BR2_KERNEL_HEADERS_3_8_ARC
 	default "2.6"		if BR2_KERNEL_HEADERS_SNAP
 	default $BR2_DEFAULT_KERNEL_VERSION if BR2_KERNEL_HEADERS_VERSION
diff --git a/toolchain/kernel-headers/kernel-headers.mk b/toolchain/kernel-headers/kernel-headers.mk
index adf7bc4..7c4910f 100644
--- a/toolchain/kernel-headers/kernel-headers.mk
+++ b/toolchain/kernel-headers/kernel-headers.mk
@@ -26,7 +26,9 @@ SUBLEVEL:=$(if $(SUBLEVEL),.$(SUBLEVEL),)
 EXTRAVERSION:=$(if $(EXTRAVERSION),.$(EXTRAVERSION),)
 
 LINUX_HEADERS_VERSION:=$(VERSION).$(PATCHLEVEL)$(SUBLEVEL)$(EXTRAVERSION)
-ifeq ($(findstring x2.6.,x$(DEFAULT_KERNEL_HEADERS)),x2.6.)
+ifeq ($(findstring arc,x$(DEFAULT_KERNEL_HEADERS)),arc)
+LINUX_HEADERS_SITE:=$(BR2_ARC_SITE)
+else ifeq ($(findstring x2.6.,x$(DEFAULT_KERNEL_HEADERS)),x2.6.)
 LINUX_HEADERS_SITE:=$(BR2_KERNEL_MIRROR:/=)/linux/kernel/v2.6/
 else
 LINUX_HEADERS_SITE:=$(BR2_KERNEL_MIRROR:/=)/linux/kernel/v3.x/
-- 
1.7.0.4

[Buildroot] [PATCH 4/7] arc: Add ARC specific kernel headers

[Thomas Petazzoni]

Dear Mischa Jonker,

On Mon, 22 Apr 2013 13:37:28 +0200, Mischa Jonker wrote:
> ARC architecture will be on kernel.org from 3.9 onwards. For now
> we still need to use a out-of-tree kernel tarball.
> 
> Signed-off-by: Mischa Jonker <mjonker@synopsys.com>

We managed to avoid architecture-specific versions of the kernel until
now, but seems like in this case it's unavoidable until 3.9 is
released... which should happen next week. Maybe we could already
replace this by a patch that adds 3.9, currently pointing to 3.9-rc8,
and that we would change once the final 3.9 is out?

Best regards,

Thomas
-- 
Thomas Petazzoni, Free Electrons
Kernel, drivers, real-time and embedded Linux
development, consulting, training and support.
http://free-electrons.com

[Buildroot] [PATCH 5/7] arc: Add support for ARC-specific GCC

[Mischa Jonker]

ARC support in GCC is not upstream yet...

Signed-off-by: Mischa Jonker <mjonker@synopsys.com>
---
 support/gnuconfig/config.sub                       |    4 +-
 toolchain/Config.in                                |    3 +-
 .../gcc/4.4.7-arc/fix_branch_out_of_range.patch    |   22 ++++++++++++++++++++
 toolchain/gcc/Config.in                            |   22 ++++++++++++-------
 toolchain/gcc/gcc-uclibc-4.x.mk                    |    4 +++
 5 files changed, 44 insertions(+), 11 deletions(-)
 create mode 100644 toolchain/gcc/4.4.7-arc/fix_branch_out_of_range.patch

diff --git a/support/gnuconfig/config.sub b/support/gnuconfig/config.sub
index 8509813..b2958ad 100755
--- a/support/gnuconfig/config.sub
+++ b/support/gnuconfig/config.sub
@@ -259,7 +259,7 @@ case $basic_machine in
 	| alpha | alphaev[4-8] | alphaev56 | alphaev6[78] | alphapca5[67] \
 	| alpha64 | alpha64ev[4-8] | alpha64ev56 | alpha64ev6[78] | alpha64pca5[67] \
 	| am33_2.0 \
-	| arc \
+	| arc | arceb \
 	| arm | arm[bl]e | arme[lb] | armv[2-8] | armv[3-8][lb] | armv7[arm] \
 	| avr | avr32 \
 	| be32 | be64 \
@@ -372,7 +372,7 @@ case $basic_machine in
 	| aarch64-* | aarch64_be-* \
 	| alpha-* | alphaev[4-8]-* | alphaev56-* | alphaev6[78]-* \
 	| alpha64-* | alpha64ev[4-8]-* | alpha64ev56-* | alpha64ev6[78]-* \
-	| alphapca5[67]-* | alpha64pca5[67]-* | arc-* \
+	| alphapca5[67]-* | alpha64pca5[67]-* | arc-* | arceb-* \
 	| arm-*  | armbe-* | armle-* | armeb-* | armv*-* \
 	| avr-* | avr32-* \
 	| be32-* | be64-* \
diff --git a/toolchain/Config.in b/toolchain/Config.in
index fa78cf4..5d1c592 100644
--- a/toolchain/Config.in
+++ b/toolchain/Config.in
@@ -22,7 +22,8 @@ config BR2_TOOLCHAIN_EXTERNAL
 
 config BR2_TOOLCHAIN_CTNG
 	bool "Crosstool-NG toolchain"
-	depends on !BR2_microblaze && !BR2_aarch64 && !BR2_xtensa
+	depends on !BR2_microblaze && !BR2_aarch64 && !BR2_xtensa && \
+		   !BR2_arc && !BR2_arceb
 	select BR2_TOOLCHAIN_HAS_SHADOW_PASSWORDS
 	help
 	  Say 'y' if you want to generate the toolchain with crosstool-NG
diff --git a/toolchain/gcc/4.4.7-arc/fix_branch_out_of_range.patch b/toolchain/gcc/4.4.7-arc/fix_branch_out_of_range.patch
new file mode 100644
index 0000000..f042a71
--- /dev/null
+++ b/toolchain/gcc/4.4.7-arc/fix_branch_out_of_range.patch
@@ -0,0 +1,22 @@
+diff --git a/gcc/config/arc/arc.c b/gcc/config/arc/arc.c
+index ff602c0..b3ca4c4 100644
+--- a/gcc/config/arc/arc.c
++++ b/gcc/config/arc/arc.c
+@@ -6565,7 +6565,7 @@ estimate required size increase).
+ 	      rtx *ccp = &XEXP (XVECEXP (pat, 0, 1), 0);
+ 
+ 	      offset = branch_dest (insn) - INSN_ADDRESSES (INSN_UID (insn));
+-	      if ((offset >= -140 && offset < 140)
++	      if ((offset >= -120 && offset < 120)
+ 		  && rtx_equal_p (XEXP (op, 1), const0_rtx)
+  		  && compact_register_operand (XEXP (op, 0), VOIDmode)
+ 		  && equality_comparison_operator (op, VOIDmode))
+@@ -6687,7 +6687,7 @@ estimate required size increase).
+ 
+ 		  if (op0 != cmp0)
+  		    cc_clob_rtx = gen_rtx_REG (CC_ZNmode, CC_REG);
+- 		  else if ((offset >= -140 && offset < 140)
++ 		  else if ((offset >= -120 && offset < 120)
+ 			   && rtx_equal_p (op1, const0_rtx)
+ 			   && compact_register_operand (op0, VOIDmode)
+ 			   && (GET_CODE (op) == EQ
diff --git a/toolchain/gcc/Config.in b/toolchain/gcc/Config.in
index d7e8715..2396e8e 100644
--- a/toolchain/gcc/Config.in
+++ b/toolchain/gcc/Config.in
@@ -9,44 +9,49 @@ choice
 	prompt "GCC compiler Version"
 	default BR2_GCC_VERSION_4_4_X if BR2_sparc_sparchfleon || BR2_sparc_sparchfleonv8 || BR2_sparc_sparcsfleon || BR2_sparc_sparcsfleonv8
 	default BR2_GCC_VERSION_4_2_2_AVR32_2_1_5 if BR2_avr32
+	default BR2_GCC_VERSION_4_4_7_ARC if BR2_arc || BR2_arceb
 	default BR2_GCC_VERSION_4_7_X
 	help
 	  Select the version of gcc you wish to use.
 
+	config BR2_GCC_VERSION_4_4_7_ARC
+		depends on BR2_arc || BR2_arceb
+		bool "gcc 4.4.7-arc"
+
 	config BR2_GCC_VERSION_4_2_2_AVR32_2_1_5
 	       depends on BR2_avr32
 	       bool "gcc 4.2.2-avr32-2.1.5"
 
 	config BR2_GCC_VERSION_4_3_X
-		depends on !BR2_avr32 && !BR2_sparc_sparchfleon && !BR2_sparc_sparchfleonv8 && !BR2_sparc_sparcsfleon && !BR2_sparc_sparcsfleonv8 && !BR2_cortex_a5 && !BR2_cortex_a8 && !BR2_cortex_a9 && !BR2_cortex_a15 && !BR2_x86_atom && !BR2_powerpc_e300c2 && !BR2_powerpc_e300c3 && !BR2_powerpc_e500mc && !BR2_powerpc_464 && !BR2_powerpc_464fp && !BR2_powerpc_476 && !BR2_powerpc_476fp && !BR2_fa526
+		depends on !BR2_arc && !BR2_arceb && !BR2_avr32 && !BR2_sparc_sparchfleon && !BR2_sparc_sparchfleonv8 && !BR2_sparc_sparcsfleon && !BR2_sparc_sparcsfleonv8 && !BR2_cortex_a5 && !BR2_cortex_a8 && !BR2_cortex_a9 && !BR2_cortex_a15 && !BR2_x86_atom && !BR2_powerpc_e300c2 && !BR2_powerpc_e300c3 && !BR2_powerpc_e500mc && !BR2_powerpc_464 && !BR2_powerpc_464fp && !BR2_powerpc_476 && !BR2_powerpc_476fp && !BR2_fa526
 		bool "gcc 4.3.x"
 
 	config BR2_GCC_VERSION_4_4_X
-		depends on !BR2_avr32 && !BR2_cortex_a5 && !BR2_cortex_a15 && !BR2_x86_atom && !BR2_powerpc_476 && !BR2_powerpc_476fp && !BR2_fa526
+		depends on !BR2_arc && !BR2_arceb && !BR2_avr32 && !BR2_cortex_a5 && !BR2_cortex_a15 && !BR2_x86_atom && !BR2_powerpc_476 && !BR2_powerpc_476fp && !BR2_fa526
 		bool "gcc 4.4.x"
 
 	config BR2_GCC_VERSION_4_5_X
-		depends on !BR2_avr32 && !BR2_cortex_a15 && !BR2_sparc_sparchfleon && !BR2_sparc_sparchfleonv8 && !BR2_sparc_sparcsfleon && !BR2_sparc_sparcsfleonv8 && !BR2_fa526
+		depends on !BR2_arc && !BR2_arceb && !BR2_avr32 && !BR2_cortex_a15 && !BR2_sparc_sparchfleon && !BR2_sparc_sparchfleonv8 && !BR2_sparc_sparcsfleon && !BR2_sparc_sparcsfleonv8 && !BR2_fa526
 		select BR2_GCC_NEEDS_MPC
 		bool "gcc 4.5.x"
 
 	config BR2_GCC_VERSION_4_6_X
-		depends on !BR2_avr32 && !BR2_sparc_sparchfleon && !BR2_sparc_sparchfleonv8 && !BR2_sparc_sparcsfleon && !BR2_sparc_sparcsfleonv8
+		depends on !BR2_arc && !BR2_arceb && !BR2_avr32 && !BR2_sparc_sparchfleon && !BR2_sparc_sparchfleonv8 && !BR2_sparc_sparcsfleon && !BR2_sparc_sparcsfleonv8
 		select BR2_GCC_NEEDS_MPC
 		bool "gcc 4.6.x"
 
 	config BR2_GCC_VERSION_4_7_X
-		depends on !BR2_avr32 && !BR2_sparc_sparchfleon && !BR2_sparc_sparchfleonv8 && !BR2_sparc_sparcsfleon && !BR2_sparc_sparcsfleonv8
+		depends on !BR2_arc && !BR2_arceb && !BR2_avr32 && !BR2_sparc_sparchfleon && !BR2_sparc_sparchfleonv8 && !BR2_sparc_sparcsfleon && !BR2_sparc_sparcsfleonv8
 		select BR2_GCC_NEEDS_MPC
 		bool "gcc 4.7.x"
 
 	config BR2_GCC_VERSION_4_8_X
-		depends on !BR2_avr32 && !BR2_sparc_sparchfleon && !BR2_sparc_sparchfleonv8 && !BR2_sparc_sparcsfleon && !BR2_sparc_sparcsfleonv8
+		depends on !BR2_arc && !BR2_arceb && !BR2_avr32 && !BR2_sparc_sparchfleon && !BR2_sparc_sparchfleonv8 && !BR2_sparc_sparcsfleon && !BR2_sparc_sparcsfleonv8
 		select BR2_GCC_NEEDS_MPC
 		bool "gcc 4.8.x"
 
 	config BR2_GCC_VERSION_SNAP
-		depends on !BR2_avr32 && !BR2_sparc_sparchfleon && !BR2_sparc_sparchfleonv8 && !BR2_sparc_sparcsfleon && !BR2_sparc_sparcsfleonv8
+		depends on !BR2_arc && !BR2_arceb && !BR2_avr32 && !BR2_sparc_sparchfleon && !BR2_sparc_sparchfleonv8 && !BR2_sparc_sparcsfleon && !BR2_sparc_sparcsfleonv8
 		select BR2_GCC_NEEDS_MPC
 		bool "gcc snapshot"
 endchoice
@@ -74,6 +79,7 @@ config BR2_GCC_VERSION
 	default "4.2.2-avr32-2.1.5" if BR2_GCC_VERSION_4_2_2_AVR32_2_1_5
 	default "4.3.6"     if BR2_GCC_VERSION_4_3_X
 	default "4.4.7"     if BR2_GCC_VERSION_4_4_X
+	default "4.4.7-arc" if BR2_GCC_VERSION_4_4_7_ARC
 	default "4.5.4"     if BR2_GCC_VERSION_4_5_X
 	default "4.6.4"     if BR2_GCC_VERSION_4_6_X
 	default "4.7.3"     if BR2_GCC_VERSION_4_7_X
@@ -119,6 +125,6 @@ config BR2_GCC_ENABLE_TLS
 
 config BR2_GCC_ENABLE_OPENMP
 	bool "Enable compiler OpenMP support"
-	depends on !BR2_PTHREADS_NONE && !BR2_avr32
+	depends on !BR2_PTHREADS_NONE && !BR2_avr32 && !BR2_arc && !BR2_arceb
 	help
 	  Enable OpenMP support for the compiler
diff --git a/toolchain/gcc/gcc-uclibc-4.x.mk b/toolchain/gcc/gcc-uclibc-4.x.mk
index fc11ad4..31afd48 100644
--- a/toolchain/gcc/gcc-uclibc-4.x.mk
+++ b/toolchain/gcc/gcc-uclibc-4.x.mk
@@ -29,6 +29,8 @@ ifneq ($(GCC_SNAP_DATE),)
  GCC_SITE:=ftp://gcc.gnu.org/pub/gcc/snapshots/$(GCC_SNAP_DATE)/
 else ifeq ($(findstring avr32,$(GCC_VERSION)),avr32)
  GCC_SITE:=ftp://www.at91.com/pub/buildroot/
+else ifeq ($(findstring arc,$(GCC_VERSION)),arc)
+ GCC_SITE:=$(BR2_ARC_SITE)
 else
  GCC_SITE:=$(BR2_GNU_MIRROR:/=)/gcc/gcc-$(GCC_VERSION)
 endif
@@ -63,7 +65,9 @@ endif
 
 # Determine soft-float options
 ifeq ($(BR2_SOFT_FLOAT),y)
+ifeq ($(BR2_arc)$(BR2_arceb),)
 SOFT_FLOAT_CONFIG_OPTION:=--with-float=soft
+endif
 ifeq ($(BR2_arm)$(BR2_armeb),y) # only set float-abi for arm
 TARGET_SOFT_FLOAT:=-mfloat-abi=soft
 else
-- 
1.7.0.4

[Buildroot] [PATCH 5/7] arc: Add support for ARC-specific GCC

[Thomas Petazzoni]

Dear Mischa Jonker,

On Mon, 22 Apr 2013 13:37:29 +0200, Mischa Jonker wrote:
> ARC support in GCC is not upstream yet...
> 
> Signed-off-by: Mischa Jonker <mjonker@synopsys.com>
> ---
>  support/gnuconfig/config.sub                       |    4 +-
>  toolchain/Config.in                                |    3 +-
>  .../gcc/4.4.7-arc/fix_branch_out_of_range.patch    |   22 ++++++++++++++++++++
>  toolchain/gcc/Config.in                            |   22 ++++++++++++-------
>  toolchain/gcc/gcc-uclibc-4.x.mk                    |    4 +++
>  5 files changed, 44 insertions(+), 11 deletions(-)
>  create mode 100644 toolchain/gcc/4.4.7-arc/fix_branch_out_of_range.patch
> 
> diff --git a/support/gnuconfig/config.sub b/support/gnuconfig/config.sub
> index 8509813..b2958ad 100755
> --- a/support/gnuconfig/config.sub
> +++ b/support/gnuconfig/config.sub
> @@ -259,7 +259,7 @@ case $basic_machine in
>  	| alpha | alphaev[4-8] | alphaev56 | alphaev6[78] | alphapca5[67] \
>  	| alpha64 | alpha64ev[4-8] | alpha64ev56 | alpha64ev6[78] | alpha64pca5[67] \
>  	| am33_2.0 \
> -	| arc \
> +	| arc | arceb \
>  	| arm | arm[bl]e | arme[lb] | armv[2-8] | armv[3-8][lb] | armv7[arm] \
>  	| avr | avr32 \
>  	| be32 | be64 \
> @@ -372,7 +372,7 @@ case $basic_machine in
>  	| aarch64-* | aarch64_be-* \
>  	| alpha-* | alphaev[4-8]-* | alphaev56-* | alphaev6[78]-* \
>  	| alpha64-* | alpha64ev[4-8]-* | alpha64ev56-* | alpha64ev6[78]-* \
> -	| alphapca5[67]-* | alpha64pca5[67]-* | arc-* \
> +	| alphapca5[67]-* | alpha64pca5[67]-* | arc-* | arceb-* \
>  	| arm-*  | armbe-* | armle-* | armeb-* | armv*-* \
>  	| avr-* | avr32-* \
>  	| be32-* | be64-* \

This should be in a separate patch. Is this change upstream in the
gnuconfig project. We from time to time sync up with the upstream
variant, so if you want those changes to be preserved over time, they
need to be upstreamed.

> diff --git a/toolchain/Config.in b/toolchain/Config.in
> index fa78cf4..5d1c592 100644
> --- a/toolchain/Config.in
> +++ b/toolchain/Config.in
> @@ -22,7 +22,8 @@ config BR2_TOOLCHAIN_EXTERNAL
>  
>  config BR2_TOOLCHAIN_CTNG
>  	bool "Crosstool-NG toolchain"
> -	depends on !BR2_microblaze && !BR2_aarch64 && !BR2_xtensa
> +	depends on !BR2_microblaze && !BR2_aarch64 && !BR2_xtensa && \
> +		   !BR2_arc && !BR2_arceb
>  	select BR2_TOOLCHAIN_HAS_SHADOW_PASSWORDS
>  	help
>  	  Say 'y' if you want to generate the toolchain with crosstool-NG

This should also be part of a separate patch, ideally.

> diff --git a/toolchain/gcc/4.4.7-arc/fix_branch_out_of_range.patch b/toolchain/gcc/4.4.7-arc/fix_branch_out_of_range.patch
> new file mode 100644
> index 0000000..f042a71
> --- /dev/null
> +++ b/toolchain/gcc/4.4.7-arc/fix_branch_out_of_range.patch
> @@ -0,0 +1,22 @@
> +diff --git a/gcc/config/arc/arc.c b/gcc/config/arc/arc.c
> +index ff602c0..b3ca4c4 100644
> +--- a/gcc/config/arc/arc.c
> ++++ b/gcc/config/arc/arc.c
> +@@ -6565,7 +6565,7 @@ estimate required size increase).
> + 	      rtx *ccp = &XEXP (XVECEXP (pat, 0, 1), 0);
> + 
> + 	      offset = branch_dest (insn) - INSN_ADDRESSES (INSN_UID (insn));
> +-	      if ((offset >= -140 && offset < 140)
> ++	      if ((offset >= -120 && offset < 120)
> + 		  && rtx_equal_p (XEXP (op, 1), const0_rtx)
> +  		  && compact_register_operand (XEXP (op, 0), VOIDmode)
> + 		  && equality_comparison_operator (op, VOIDmode))
> +@@ -6687,7 +6687,7 @@ estimate required size increase).
> + 
> + 		  if (op0 != cmp0)
> +  		    cc_clob_rtx = gen_rtx_REG (CC_ZNmode, CC_REG);
> +- 		  else if ((offset >= -140 && offset < 140)
> ++ 		  else if ((offset >= -120 && offset < 120)
> + 			   && rtx_equal_p (op1, const0_rtx)
> + 			   && compact_register_operand (op0, VOIDmode)
> + 			   && (GET_CODE (op) == EQ

Patch lacks a description + Signed-off-by.

> diff --git a/toolchain/gcc/Config.in b/toolchain/gcc/Config.in
> index d7e8715..2396e8e 100644
> --- a/toolchain/gcc/Config.in
> +++ b/toolchain/gcc/Config.in
> @@ -9,44 +9,49 @@ choice
>  	prompt "GCC compiler Version"
>  	default BR2_GCC_VERSION_4_4_X if BR2_sparc_sparchfleon || BR2_sparc_sparchfleonv8 || BR2_sparc_sparcsfleon || BR2_sparc_sparcsfleonv8
>  	default BR2_GCC_VERSION_4_2_2_AVR32_2_1_5 if BR2_avr32
> +	default BR2_GCC_VERSION_4_4_7_ARC if BR2_arc || BR2_arceb
>  	default BR2_GCC_VERSION_4_7_X
>  	help
>  	  Select the version of gcc you wish to use.
>  
> +	config BR2_GCC_VERSION_4_4_7_ARC
> +		depends on BR2_arc || BR2_arceb
> +		bool "gcc 4.4.7-arc"
> +
>  	config BR2_GCC_VERSION_4_2_2_AVR32_2_1_5
>  	       depends on BR2_avr32
>  	       bool "gcc 4.2.2-avr32-2.1.5"
>  
>  	config BR2_GCC_VERSION_4_3_X
> -		depends on !BR2_avr32 && !BR2_sparc_sparchfleon && !BR2_sparc_sparchfleonv8 && !BR2_sparc_sparcsfleon && !BR2_sparc_sparcsfleonv8 && !BR2_cortex_a5 && !BR2_cortex_a8 && !BR2_cortex_a9 && !BR2_cortex_a15 && !BR2_x86_atom && !BR2_powerpc_e300c2 && !BR2_powerpc_e300c3 && !BR2_powerpc_e500mc && !BR2_powerpc_464 && !BR2_powerpc_464fp && !BR2_powerpc_476 && !BR2_powerpc_476fp && !BR2_fa526
> +		depends on !BR2_arc && !BR2_arceb && !BR2_avr32 && !BR2_sparc_sparchfleon && !BR2_sparc_sparchfleonv8 && !BR2_sparc_sparcsfleon && !BR2_sparc_sparcsfleonv8 && !BR2_cortex_a5 && !BR2_cortex_a8 && !BR2_cortex_a9 && !BR2_cortex_a15 && !BR2_x86_atom && !BR2_powerpc_e300c2 && !BR2_powerpc_e300c3 && !BR2_powerpc_e500mc && !BR2_powerpc_464 && !BR2_powerpc_464fp && !BR2_powerpc_476 && !BR2_powerpc_476fp && !BR2_fa526
>  		bool "gcc 4.3.x"
>  
>  	config BR2_GCC_VERSION_4_4_X
> -		depends on !BR2_avr32 && !BR2_cortex_a5 && !BR2_cortex_a15 && !BR2_x86_atom && !BR2_powerpc_476 && !BR2_powerpc_476fp && !BR2_fa526
> +		depends on !BR2_arc && !BR2_arceb && !BR2_avr32 && !BR2_cortex_a5 && !BR2_cortex_a15 && !BR2_x86_atom && !BR2_powerpc_476 && !BR2_powerpc_476fp && !BR2_fa526
>  		bool "gcc 4.4.x"
>  
>  	config BR2_GCC_VERSION_4_5_X
> -		depends on !BR2_avr32 && !BR2_cortex_a15 && !BR2_sparc_sparchfleon && !BR2_sparc_sparchfleonv8 && !BR2_sparc_sparcsfleon && !BR2_sparc_sparcsfleonv8 && !BR2_fa526
> +		depends on !BR2_arc && !BR2_arceb && !BR2_avr32 && !BR2_cortex_a15 && !BR2_sparc_sparchfleon && !BR2_sparc_sparchfleonv8 && !BR2_sparc_sparcsfleon && !BR2_sparc_sparcsfleonv8 && !BR2_fa526
>  		select BR2_GCC_NEEDS_MPC
>  		bool "gcc 4.5.x"
>  
>  	config BR2_GCC_VERSION_4_6_X
> -		depends on !BR2_avr32 && !BR2_sparc_sparchfleon && !BR2_sparc_sparchfleonv8 && !BR2_sparc_sparcsfleon && !BR2_sparc_sparcsfleonv8
> +		depends on !BR2_arc && !BR2_arceb && !BR2_avr32 && !BR2_sparc_sparchfleon && !BR2_sparc_sparchfleonv8 && !BR2_sparc_sparcsfleon && !BR2_sparc_sparcsfleonv8
>  		select BR2_GCC_NEEDS_MPC
>  		bool "gcc 4.6.x"
>  
>  	config BR2_GCC_VERSION_4_7_X
> -		depends on !BR2_avr32 && !BR2_sparc_sparchfleon && !BR2_sparc_sparchfleonv8 && !BR2_sparc_sparcsfleon && !BR2_sparc_sparcsfleonv8
> +		depends on !BR2_arc && !BR2_arceb && !BR2_avr32 && !BR2_sparc_sparchfleon && !BR2_sparc_sparchfleonv8 && !BR2_sparc_sparcsfleon && !BR2_sparc_sparcsfleonv8
>  		select BR2_GCC_NEEDS_MPC
>  		bool "gcc 4.7.x"
>  
>  	config BR2_GCC_VERSION_4_8_X
> -		depends on !BR2_avr32 && !BR2_sparc_sparchfleon && !BR2_sparc_sparchfleonv8 && !BR2_sparc_sparcsfleon && !BR2_sparc_sparcsfleonv8
> +		depends on !BR2_arc && !BR2_arceb && !BR2_avr32 && !BR2_sparc_sparchfleon && !BR2_sparc_sparchfleonv8 && !BR2_sparc_sparcsfleon && !BR2_sparc_sparcsfleonv8
>  		select BR2_GCC_NEEDS_MPC
>  		bool "gcc 4.8.x"
>  
>  	config BR2_GCC_VERSION_SNAP
> -		depends on !BR2_avr32 && !BR2_sparc_sparchfleon && !BR2_sparc_sparchfleonv8 && !BR2_sparc_sparcsfleon && !BR2_sparc_sparcsfleonv8
> +		depends on !BR2_arc && !BR2_arceb && !BR2_avr32 && !BR2_sparc_sparchfleon && !BR2_sparc_sparchfleonv8 && !BR2_sparc_sparcsfleon && !BR2_sparc_sparcsfleonv8
>  		select BR2_GCC_NEEDS_MPC
>  		bool "gcc snapshot"

Hum, not really nice. Maybe it's time to split the lines. Or even to
have something like "BR2_ARCH_HAS_GCC_4_8", "BR2_ARCH_HAS_GCC_4_5",
etc. But maybe that can be as follow-up cleanups.

>  endchoice
> @@ -74,6 +79,7 @@ config BR2_GCC_VERSION
>  	default "4.2.2-avr32-2.1.5" if BR2_GCC_VERSION_4_2_2_AVR32_2_1_5
>  	default "4.3.6"     if BR2_GCC_VERSION_4_3_X
>  	default "4.4.7"     if BR2_GCC_VERSION_4_4_X
> +	default "4.4.7-arc" if BR2_GCC_VERSION_4_4_7_ARC
>  	default "4.5.4"     if BR2_GCC_VERSION_4_5_X
>  	default "4.6.4"     if BR2_GCC_VERSION_4_6_X
>  	default "4.7.3"     if BR2_GCC_VERSION_4_7_X
> @@ -119,6 +125,6 @@ config BR2_GCC_ENABLE_TLS
>  
>  config BR2_GCC_ENABLE_OPENMP
>  	bool "Enable compiler OpenMP support"
> -	depends on !BR2_PTHREADS_NONE && !BR2_avr32
> +	depends on !BR2_PTHREADS_NONE && !BR2_avr32 && !BR2_arc && !BR2_arceb
>  	help
>  	  Enable OpenMP support for the compiler
> diff --git a/toolchain/gcc/gcc-uclibc-4.x.mk b/toolchain/gcc/gcc-uclibc-4.x.mk
> index fc11ad4..31afd48 100644
> --- a/toolchain/gcc/gcc-uclibc-4.x.mk
> +++ b/toolchain/gcc/gcc-uclibc-4.x.mk
> @@ -29,6 +29,8 @@ ifneq ($(GCC_SNAP_DATE),)
>   GCC_SITE:=ftp://gcc.gnu.org/pub/gcc/snapshots/$(GCC_SNAP_DATE)/
>  else ifeq ($(findstring avr32,$(GCC_VERSION)),avr32)
>   GCC_SITE:=ftp://www.at91.com/pub/buildroot/
> +else ifeq ($(findstring arc,$(GCC_VERSION)),arc)
> + GCC_SITE:=$(BR2_ARC_SITE)
>  else
>   GCC_SITE:=$(BR2_GNU_MIRROR:/=)/gcc/gcc-$(GCC_VERSION)
>  endif
> @@ -63,7 +65,9 @@ endif
>  
>  # Determine soft-float options
>  ifeq ($(BR2_SOFT_FLOAT),y)
> +ifeq ($(BR2_arc)$(BR2_arceb),)
>  SOFT_FLOAT_CONFIG_OPTION:=--with-float=soft
> +endif

Hum. Maybe this --with-float=soft should instead only be passed for the
architectures for which it makes sense (ARM? PowerPC?).

>  ifeq ($(BR2_arm)$(BR2_armeb),y) # only set float-abi for arm
>  TARGET_SOFT_FLOAT:=-mfloat-abi=soft
>  else

Thomas
-- 
Thomas Petazzoni, Free Electrons
Kernel, drivers, real-time and embedded Linux
development, consulting, training and support.
http://free-electrons.com

[Buildroot] [PATCH 5/7] arc: Add support for ARC-specific GCC

[Mischa Jonker]

>> diff --git a/support/gnuconfig/config.sub 
>> b/support/gnuconfig/config.sub index 8509813..b2958ad 100755
>> -	| arc \
>> +	| arc | arceb \

> This should be in a separate patch. Is this change upstream in the gnuconfig project. We from time to time sync up with the upstream variant, so if you want those changes to be preserved over time, they need to be upstreamed.

The change is in the upstream project now. Would you like me to change the gnuconfig patch in BuildRoot from 'add ARC to gnuconfig' to 'update gnuconfig from upstream'?

Mischa

[Buildroot] [PATCH 5/7] arc: Add support for ARC-specific GCC

[Thomas Petazzoni]

Dear Mischa Jonker,

On Wed, 24 Apr 2013 12:44:20 +0000, Mischa Jonker wrote:

> > This should be in a separate patch. Is this change upstream in the
> > gnuconfig project. We from time to time sync up with the upstream
> > variant, so if you want those changes to be preserved over time,
> > they need to be upstreamed.
> 
> The change is in the upstream project now. Would you like me to
> change the gnuconfig patch in BuildRoot from 'add ARC to gnuconfig'
> to 'update gnuconfig from upstream'?

Yes, that'd be great.

Thanks,

Thomas
-- 
Thomas Petazzoni, Free Electrons
Kernel, drivers, real-time and embedded Linux
development, consulting, training and support.
http://free-electrons.com

[Buildroot] [PATCH 5/7] arc: Add support for ARC-specific GCC

[Mischa Jonker]

Hi Thomas,

> > The change is in the upstream project now. Would you like me to change 
> > the gnuconfig patch in BuildRoot from 'add ARC to gnuconfig'
> > to 'update gnuconfig from upstream'?

> Yes, that'd be great.

There are some patches with your name on it in support/gnuconfig/patches. 
These patches seem to be applied already on support/gnuconfig/*. I have 
updated these patches so that they apply cleanly on top of the new gnuconfig
(+small ARC-specific addition), but they still have your Signed-off-by tag. 

What's the proper procedure for signing off patches within a patch? 

Mischa

[Buildroot] [PATCH 5/7] arc: Add support for ARC-specific GCC

[Yann E. MORIN]

Mischa, All,

On Wed, Apr 24, 2013 at 03:19:14PM +0000, Mischa Jonker wrote:
> There are some patches with your name on it in support/gnuconfig/patches. 
> These patches seem to be applied already on support/gnuconfig/*. I have 
> updated these patches so that they apply cleanly on top of the new gnuconfig
> (+small ARC-specific addition), but they still have your Signed-off-by tag. 
> 
> What's the proper procedure for signing off patches within a patch? 

Two options:
  - update the patch, add your SoB-line
  - add a new patch with only your SoB-line

If your change adds a new semantic change (which is the case: add a new
architecture), then I'd favour the second option.

If your change is an addition (as a fix, or for completeness), then go
for option 1.

Regards,
Yann E. MORIN.

-- 
.-----------------.--------------------.------------------.--------------------.
|  Yann E. MORIN  | Real-Time Embedded | /"\ ASCII RIBBON | Erics' conspiracy: |
| +33 662 376 056 | Software  Designer | \ / CAMPAIGN     |  ___               |
| +33 223 225 172 `------------.-------:  X  AGAINST      |  \e/  There is no  |
| http://ymorin.is-a-geek.org/ | _/*\_ | / \ HTML MAIL    |   v   conspiracy.  |
'------------------------------^-------^------------------^--------------------'

[Buildroot] [PATCH 6/7] arc: Add support for ARC-specific uClibc

[Mischa Jonker]

Signed-off-by: Mischa Jonker <mjonker@synopsys.com>
---
 toolchain/uClibc/Config.in                |   12 +-
 toolchain/uClibc/uClibc-0.9.33-arc.config |  251 +++++++++++++++++++++++++++++
 toolchain/uClibc/uclibc.mk                |    4 +
 3 files changed, 264 insertions(+), 3 deletions(-)
 create mode 100644 toolchain/uClibc/uClibc-0.9.33-arc.config

diff --git a/toolchain/uClibc/Config.in b/toolchain/uClibc/Config.in
index b98e2e8..6e85fdd 100644
--- a/toolchain/uClibc/Config.in
+++ b/toolchain/uClibc/Config.in
@@ -16,12 +16,16 @@ choice
 
 	config BR2_UCLIBC_VERSION_0_9_32
 		bool "uClibc 0.9.32.x"
-		depends on !(BR2_avr32 || BR2_sh || BR2_xtensa)
+		depends on !(BR2_arc || BR2_arceb || BR2_avr32 || BR2_sh || BR2_xtensa)
 
 	config BR2_UCLIBC_VERSION_0_9_33
 		bool "uClibc 0.9.33.x"
-		depends on !BR2_xtensa
-
+		depends on !(BR2_arc || BR2_arceb || BR2_xtensa)
+	
+	config BR2_UCLIBC_VERSION_0_9_33_ARC
+		bool "uClibc 0.9.33.x-arc"
+		depends on (BR2_arc || BR2_arceb)
+	
 	config BR2_UCLIBC_VERSION_SNAPSHOT
 		bool "daily snapshot"
 
@@ -39,6 +43,7 @@ config BR2_UCLIBC_VERSION_STRING
 	default 0.9.31.1	if BR2_UCLIBC_VERSION_0_9_31
 	default 0.9.32.1	if BR2_UCLIBC_VERSION_0_9_32
 	default 0.9.33.2	if BR2_UCLIBC_VERSION_0_9_33
+	default 0.9.33-arc	if BR2_UCLIBC_VERSION_0_9_33_ARC
 	default $BR2_USE_UCLIBC_SNAPSHOT	if BR2_UCLIBC_VERSION_SNAPSHOT
 
 config BR2_UCLIBC_CONFIG
@@ -46,6 +51,7 @@ config BR2_UCLIBC_CONFIG
 	default "toolchain/uClibc/uClibc-0.9.31.config" if BR2_UCLIBC_VERSION_0_9_31
 	default "toolchain/uClibc/uClibc-0.9.32.config" if BR2_UCLIBC_VERSION_0_9_32
 	default "toolchain/uClibc/uClibc-0.9.33.config" if BR2_UCLIBC_VERSION_0_9_33
+	default "toolchain/uClibc/uClibc-0.9.33-arc.config" if BR2_UCLIBC_VERSION_0_9_33_ARC
 	default "toolchain/uClibc/uClibc-snapshot.config" if BR2_UCLIBC_VERSION_SNAPSHOT
 	help
 	  Some people may wish to use their own modified uClibc configuration
diff --git a/toolchain/uClibc/uClibc-0.9.33-arc.config b/toolchain/uClibc/uClibc-0.9.33-arc.config
new file mode 100644
index 0000000..d1317d3
--- /dev/null
+++ b/toolchain/uClibc/uClibc-0.9.33-arc.config
@@ -0,0 +1,251 @@
+#
+# Automatically generated make config: don't edit
+# Version: 0.9.34-git
+# Fri Apr 19 17:34:07 2013
+#
+# TARGET_alpha is not set
+TARGET_arc=y
+# TARGET_arm is not set
+# TARGET_avr32 is not set
+# TARGET_bfin is not set
+# TARGET_c6x is not set
+# TARGET_cris is not set
+# TARGET_e1 is not set
+# TARGET_frv is not set
+# TARGET_h8300 is not set
+# TARGET_hppa is not set
+# TARGET_i386 is not set
+# TARGET_i960 is not set
+# TARGET_ia64 is not set
+# TARGET_m68k is not set
+# TARGET_metag is not set
+# TARGET_microblaze is not set
+# TARGET_mips is not set
+# TARGET_nios is not set
+# TARGET_nios2 is not set
+# TARGET_powerpc is not set
+# TARGET_sh is not set
+# TARGET_sh64 is not set
+# TARGET_sparc is not set
+# TARGET_v850 is not set
+# TARGET_vax is not set
+# TARGET_x86_64 is not set
+# TARGET_xtensa is not set
+
+#
+# Target Architecture Features and Options
+#
+TARGET_ARCH="arc"
+FORCE_OPTIONS_FOR_ARCH=y
+CONFIG_ARC_CPU_700=y
+TARGET_SUBARCH=""
+
+#
+# Using ELF file format
+#
+ARCH_ANY_ENDIAN=y
+ARCH_LITTLE_ENDIAN=y
+# ARCH_WANTS_BIG_ENDIAN is not set
+ARCH_WANTS_LITTLE_ENDIAN=y
+ARCH_HAS_MMU=y
+ARCH_USE_MMU=y
+UCLIBC_HAS_FLOATS=y
+UCLIBC_HAS_FPU=y
+DO_C99_MATH=y
+# DO_XSI_MATH is not set
+# UCLIBC_HAS_FENV is not set
+KERNEL_HEADERS="/slowfs/nl20dwt2p001/mjonker/src/buildroot/output/toolchain/linux/include"
+HAVE_DOT_CONFIG=y
+
+#
+# General Library Settings
+#
+DOPIC=y
+HAVE_SHARED=y
+# FORCE_SHAREABLE_TEXT_SEGMENTS is not set
+LDSO_LDD_SUPPORT=y
+# LDSO_CACHE_SUPPORT is not set
+LDSO_PRELOAD_ENV_SUPPORT=y
+# LDSO_PRELOAD_FILE_SUPPORT is not set
+# LDSO_STANDALONE_SUPPORT is not set
+# LDSO_PRELINK_SUPPORT is not set
+# UCLIBC_STATIC_LDCONFIG is not set
+LDSO_RUNPATH=y
+LDSO_SAFE_RUNPATH=y
+LDSO_SEARCH_INTERP_PATH=y
+LDSO_LD_LIBRARY_PATH=y
+# LDSO_NO_CLEANUP is not set
+UCLIBC_CTOR_DTOR=y
+# LDSO_GNU_HASH_SUPPORT is not set
+# HAS_NO_THREADS is not set
+LINUXTHREADS_OLD=y
+# LINUXTHREADS_NEW is not set
+# UCLIBC_HAS_THREADS_NATIVE is not set
+UCLIBC_HAS_THREADS=y
+# PTHREADS_DEBUG_SUPPORT is not set
+UCLIBC_HAS_SYSLOG=y
+UCLIBC_HAS_LFS=y
+# MALLOC is not set
+# MALLOC_SIMPLE is not set
+MALLOC_STANDARD=y
+MALLOC_GLIBC_COMPAT=y
+UCLIBC_DYNAMIC_ATEXIT=y
+# COMPAT_ATEXIT is not set
+UCLIBC_SUSV3_LEGACY=y
+# UCLIBC_SUSV3_LEGACY_MACROS is not set
+UCLIBC_SUSV4_LEGACY=y
+# UCLIBC_STRICT_HEADERS is not set
+# UCLIBC_HAS_STUBS is not set
+UCLIBC_HAS_SHADOW=y
+UCLIBC_HAS_PROGRAM_INVOCATION_NAME=y
+UCLIBC_HAS___PROGNAME=y
+UCLIBC_HAS_PTY=y
+ASSUME_DEVPTS=y
+UNIX98PTY_ONLY=y
+UCLIBC_HAS_GETPT=y
+UCLIBC_HAS_LIBUTIL=y
+UCLIBC_HAS_TM_EXTENSIONS=y
+UCLIBC_HAS_TZ_CACHING=y
+UCLIBC_HAS_TZ_FILE=y
+UCLIBC_HAS_TZ_FILE_READ_MANY=y
+UCLIBC_TZ_FILE_PATH="/etc/TZ"
+UCLIBC_FALLBACK_TO_ETC_LOCALTIME=y
+
+#
+# Advanced Library Settings
+#
+UCLIBC_PWD_BUFFER_SIZE=256
+UCLIBC_GRP_BUFFER_SIZE=256
+
+#
+# Support various families of functions
+#
+UCLIBC_LINUX_MODULE_26=y
+# UCLIBC_LINUX_MODULE_24 is not set
+UCLIBC_LINUX_SPECIFIC=y
+UCLIBC_HAS_GNU_ERROR=y
+UCLIBC_BSD_SPECIFIC=y
+UCLIBC_HAS_BSD_ERR=y
+# UCLIBC_HAS_OBSOLETE_BSD_SIGNAL is not set
+# UCLIBC_HAS_OBSOLETE_SYSV_SIGNAL is not set
+# UCLIBC_NTP_LEGACY is not set
+# UCLIBC_SV4_DEPRECATED is not set
+UCLIBC_HAS_REALTIME=y
+UCLIBC_HAS_ADVANCED_REALTIME=y
+UCLIBC_HAS_EPOLL=y
+UCLIBC_HAS_XATTR=y
+UCLIBC_HAS_PROFILING=y
+UCLIBC_HAS_CRYPT_IMPL=y
+# UCLIBC_HAS_SHA256_CRYPT_IMPL is not set
+# UCLIBC_HAS_SHA512_CRYPT_IMPL is not set
+UCLIBC_HAS_CRYPT=y
+UCLIBC_HAS_NETWORK_SUPPORT=y
+UCLIBC_HAS_SOCKET=y
+UCLIBC_HAS_IPV4=y
+# UCLIBC_HAS_IPV6 is not set
+# UCLIBC_HAS_RPC is not set
+UCLIBC_USE_NETLINK=y
+UCLIBC_SUPPORT_AI_ADDRCONFIG=y
+# UCLIBC_HAS_BSD_RES_CLOSE is not set
+UCLIBC_HAS_COMPAT_RES_STATE=y
+# UCLIBC_HAS_EXTRA_COMPAT_RES_STATE is not set
+UCLIBC_HAS_RESOLVER_SUPPORT=y
+UCLIBC_HAS_LIBRESOLV_STUB=y
+UCLIBC_HAS_LIBNSL_STUB=y
+
+#
+# String and Stdio Support
+#
+# UCLIBC_HAS_STRING_GENERIC_OPT is not set
+UCLIBC_HAS_STRING_ARCH_OPT=y
+UCLIBC_HAS_CTYPE_TABLES=y
+UCLIBC_HAS_CTYPE_SIGNED=y
+# UCLIBC_HAS_CTYPE_UNSAFE is not set
+UCLIBC_HAS_CTYPE_CHECKED=y
+# UCLIBC_HAS_CTYPE_ENFORCED is not set
+UCLIBC_HAS_WCHAR=y
+UCLIBC_HAS_LOCALE=y
+# UCLIBC_BUILD_ALL_LOCALE is not set
+UCLIBC_BUILD_MINIMAL_LOCALE=y
+# UCLIBC_PREGENERATED_LOCALE_DATA is not set
+UCLIBC_BUILD_MINIMAL_LOCALES="en_US"
+UCLIBC_HAS_XLOCALE=y
+UCLIBC_HAS_HEXADECIMAL_FLOATS=y
+# UCLIBC_HAS_GLIBC_DIGIT_GROUPING is not set
+UCLIBC_HAS_GLIBC_CUSTOM_PRINTF=y
+UCLIBC_PRINTF_SCANF_POSITIONAL_ARGS=9
+# UCLIBC_HAS_STDIO_BUFSIZ_NONE is not set
+# UCLIBC_HAS_STDIO_BUFSIZ_256 is not set
+# UCLIBC_HAS_STDIO_BUFSIZ_512 is not set
+# UCLIBC_HAS_STDIO_BUFSIZ_1024 is not set
+# UCLIBC_HAS_STDIO_BUFSIZ_2048 is not set
+UCLIBC_HAS_STDIO_BUFSIZ_4096=y
+# UCLIBC_HAS_STDIO_BUFSIZ_8192 is not set
+UCLIBC_HAS_STDIO_BUILTIN_BUFFER_NONE=y
+# UCLIBC_HAS_STDIO_BUILTIN_BUFFER_4 is not set
+# UCLIBC_HAS_STDIO_BUILTIN_BUFFER_8 is not set
+# UCLIBC_HAS_STDIO_SHUTDOWN_ON_ABORT is not set
+# UCLIBC_HAS_STDIO_GETC_MACRO is not set
+# UCLIBC_HAS_STDIO_PUTC_MACRO is not set
+UCLIBC_HAS_STDIO_AUTO_RW_TRANSITION=y
+# UCLIBC_HAS_FOPEN_LARGEFILE_MODE is not set
+UCLIBC_HAS_FOPEN_EXCLUSIVE_MODE=y
+# UCLIBC_HAS_FOPEN_CLOSEEXEC_MODE is not set
+UCLIBC_HAS_GLIBC_CUSTOM_STREAMS=y
+UCLIBC_HAS_PRINTF_M_SPEC=y
+UCLIBC_HAS_ERRNO_MESSAGES=y
+# UCLIBC_HAS_SYS_ERRLIST is not set
+UCLIBC_HAS_SIGNUM_MESSAGES=y
+# UCLIBC_HAS_SYS_SIGLIST is not set
+UCLIBC_HAS_GNU_GETOPT=y
+# UCLIBC_HAS_GNU_GETSUBOPT is not set
+
+#
+# Big and Tall
+#
+UCLIBC_HAS_REGEX=y
+# UCLIBC_HAS_REGEX_OLD is not set
+UCLIBC_HAS_FNMATCH=y
+# UCLIBC_HAS_FNMATCH_OLD is not set
+# UCLIBC_HAS_WORDEXP is not set
+UCLIBC_HAS_NFTW=y
+UCLIBC_HAS_FTW=y
+# UCLIBC_HAS_FTS is not set
+UCLIBC_HAS_GLOB=y
+UCLIBC_HAS_GNU_GLOB=y
+UCLIBC_HAS_UTMPX=y
+
+#
+# Library Installation Options
+#
+RUNTIME_PREFIX="/"
+DEVEL_PREFIX="/usr/"
+MULTILIB_DIR="lib"
+HARDWIRED_ABSPATH=y
+
+#
+# Security options
+#
+# UCLIBC_HAS_ARC4RANDOM is not set
+# UCLIBC_HAS_SSP is not set
+UCLIBC_BUILD_RELRO=y
+UCLIBC_BUILD_NOW=y
+UCLIBC_BUILD_NOEXECSTACK=y
+
+#
+# Development/debugging options
+#
+CROSS_COMPILER_PREFIX="/slowfs/nl20dwt2p001/mjonker/src/buildroot/output/host/usr/bin/arc-buildroot-linux-uclibc-"
+UCLIBC_EXTRA_CFLAGS=""
+# DODEBUG is not set
+# DODEBUG_PT is not set
+DOSTRIP=y
+# DOASSERTS is not set
+# SUPPORT_LD_DEBUG is not set
+# SUPPORT_LD_DEBUG_EARLY is not set
+# UCLIBC_MALLOC_DEBUGGING is not set
+# UCLIBC_HAS_BACKTRACE is not set
+WARNINGS="-Wall"
+# EXTRA_WARNINGS is not set
+# DOMULTI is not set
+# UCLIBC_MJN3_ONLY is not set
diff --git a/toolchain/uClibc/uclibc.mk b/toolchain/uClibc/uclibc.mk
index 2249651..1629e76 100644
--- a/toolchain/uClibc/uclibc.mk
+++ b/toolchain/uClibc/uclibc.mk
@@ -17,6 +17,9 @@ UCLIBC_VERSION:=$(call qstrip,$(BR2_UCLIBC_VERSION_STRING))
 ifeq ($(BR2_UCLIBC_VERSION_SNAPSHOT),y)
 UCLIBC_SITE:=http://www.uclibc.org/downloads/snapshots
 UCLIBC_DIR:=$(TOOLCHAIN_DIR)/uClibc
+else ifeq ($(findstring arc,$(UCLIBC_VERSION)),arc)
+UCLIBC_SITE:=$(BR2_ARC_SITE)
+UCLIBC_DIR:=$(TOOLCHAIN_DIR)/uClibc-$(UCLIBC_VERSION)
 else
 UCLIBC_SITE:=http://www.uclibc.org/downloads
 UCLIBC_DIR:=$(TOOLCHAIN_DIR)/uClibc-$(UCLIBC_VERSION)
@@ -31,6 +34,7 @@ UCLIBC_TARGET_ARCH:=$(shell $(SHELL) -c "echo $(ARCH) | sed \
 		-e 's/-.*//' \
 		-e 's/i.86/i386/' \
 		-e 's/sparc.*/sparc/' \
+		-e 's/arc.*/arc/g' \
 		-e 's/arm.*/arm/g' \
 		-e 's/m68k.*/m68k/' \
 		-e 's/ppc/powerpc/g' \
-- 
1.7.0.4

[Buildroot] [PATCH 6/7] arc: Add support for ARC-specific uClibc

[Thomas Petazzoni]

Dear Mischa Jonker,

On Mon, 22 Apr 2013 13:37:30 +0200, Mischa Jonker wrote:
> Signed-off-by: Mischa Jonker <mjonker@synopsys.com>
> ---
>  toolchain/uClibc/Config.in                |   12 +-
>  toolchain/uClibc/uClibc-0.9.33-arc.config |  251 +++++++++++++++++++++++++++++

Do you really need a separate uClibc-<something>.config? I think we
really would like to avoid that if possible.

Thomas
-- 
Thomas Petazzoni, Free Electrons
Kernel, drivers, real-time and embedded Linux
development, consulting, training and support.
http://free-electrons.com

[Buildroot] [PATCH 7/7] arc: Make sure that libgcc doesn't get included when it doesn't exist yet

[Mischa Jonker]

For ARC, libgcc is always included, even when -nostdlib is given. This is
related to some small pieces of code that are not always generated by the
compiler; a call to libgcc is used in those cases instead.

During the initial stages of building the toolchain, this is a problem, as
libgcc does not exist yet. The ARC compiler supports -really-nostdlib to
override the default behavior.

Signed-off-by: Mischa Jonker <mjonker@synopsys.com>
---
 toolchain/uClibc/uclibc.mk |   10 ++++++++--
 1 files changed, 8 insertions(+), 2 deletions(-)

diff --git a/toolchain/uClibc/uclibc.mk b/toolchain/uClibc/uclibc.mk
index 1629e76..14083a9 100644
--- a/toolchain/uClibc/uclibc.mk
+++ b/toolchain/uClibc/uclibc.mk
@@ -404,6 +404,12 @@ ifeq ($(BR2_CCACHE),y)
 $(UCLIBC_DIR)/.config: | host-ccache
 endif
 
+ifeq ($(BR2_arc)$(BR2_arceb),)
+REALLY_NOSTDLIB=
+else
+REALLY_NOSTDLIB=-really-nostdlib
+endif
+
 $(UCLIBC_DIR)/.configured: $(LINUX_HEADERS_DIR)/.configured $(UCLIBC_DIR)/.config
 	$(Q)$(call MESSAGE,"Installing uClibc headers")
 	$(MAKE1) -C $(UCLIBC_DIR) \
@@ -422,8 +428,8 @@ $(UCLIBC_DIR)/.configured: $(LINUX_HEADERS_DIR)/.configured $(UCLIBC_DIR)/.confi
 		cp -pLR $(LINUX_HEADERS_DIR)/include/* \
 			$(TOOLCHAIN_DIR)/uClibc_dev/usr/include/; \
 	fi
-	$(TARGET_CROSS)gcc -nostdlib -nostartfiles -shared -x c /dev/null -o $(TOOLCHAIN_DIR)/uClibc_dev/usr/lib/libc.so
-	$(TARGET_CROSS)gcc -nostdlib -nostartfiles -shared -x c /dev/null -o $(TOOLCHAIN_DIR)/uClibc_dev/usr/lib/libm.so
+	$(TARGET_CROSS)gcc -nostdlib $(REALLY_NOSTDLIB) -nostartfiles -shared -x c /dev/null -o $(TOOLCHAIN_DIR)/uClibc_dev/usr/lib/libc.so
+	$(TARGET_CROSS)gcc -nostdlib $(REALLY_NOSTDLIB) -nostartfiles -shared -x c /dev/null -o $(TOOLCHAIN_DIR)/uClibc_dev/usr/lib/libm.so
 	cp -pLR $(UCLIBC_DIR)/lib/crt[1in].o $(TOOLCHAIN_DIR)/uClibc_dev/usr/lib/
 	touch $@
 
-- 
1.7.0.4

[Buildroot] [PATCH 7/7] arc: Make sure that libgcc doesn't get included when it doesn't exist yet

[Thomas Petazzoni]

Dear Mischa Jonker,

On Mon, 22 Apr 2013 13:37:31 +0200, Mischa Jonker wrote:
> For ARC, libgcc is always included, even when -nostdlib is given. This is
> related to some small pieces of code that are not always generated by the
> compiler; a call to libgcc is used in those cases instead.
> 
> During the initial stages of building the toolchain, this is a problem, as
> libgcc does not exist yet. The ARC compiler supports -really-nostdlib to
> override the default behavior.
> 
> Signed-off-by: Mischa Jonker <mjonker@synopsys.com>
> ---
>  toolchain/uClibc/uclibc.mk |   10 ++++++++--
>  1 files changed, 8 insertions(+), 2 deletions(-)
> 
> diff --git a/toolchain/uClibc/uclibc.mk b/toolchain/uClibc/uclibc.mk
> index 1629e76..14083a9 100644
> --- a/toolchain/uClibc/uclibc.mk
> +++ b/toolchain/uClibc/uclibc.mk
> @@ -404,6 +404,12 @@ ifeq ($(BR2_CCACHE),y)
>  $(UCLIBC_DIR)/.config: | host-ccache
>  endif
>  
> +ifeq ($(BR2_arc)$(BR2_arceb),)
> +REALLY_NOSTDLIB=
> +else
> +REALLY_NOSTDLIB=-really-nostdlib
> +endif

Could you copy/paste parts of your commit log as a comment above this
piece of code? This would make it easier to understand. Also, you could
write it this way:

ifeq ($(BR2_arc)$(BR2_arceb),y)
REALLY_NOSTDLIB=-really-nostdlib
endif

Thomas
-- 
Thomas Petazzoni, Free Electrons
Kernel, drivers, real-time and embedded Linux
development, consulting, training and support.
http://free-electrons.com

[Buildroot] [PATCH 0/7] RFC: ARC port

[Thomas Petazzoni]

Dear Mischa Jonker,

On Mon, 22 Apr 2013 13:37:24 +0200, Mischa Jonker wrote:

> In the following patch series I've added ARC support to the "master" tree
> of BuildRoot. As ARC support is not yet in all upstream open source packages,
> I've taken the freedom to add an option for an additional download site, from
> which ARC-specific versions of gcc, binutils, etc. can be downloaded.
> 
> ARC will be in Linux 3.9, so that would be the first package that can be
> removed from this ARC-specific download site.
> 
> The below patchset builds the toolchain, and a working root file system. Most
> simple packages build OK, but mplayer for instance does not have ARC support,
> and there are probably others as well.
> 
> Could you please have a look at the patches and let me know what to do to
> make them BuildRoot-worthy?

Thanks for sending out all those patches! I'm going to reply to them
individually for comments.

Thanks,

Thomas
-- 
Thomas Petazzoni, Free Electrons
Kernel, drivers, real-time and embedded Linux
development, consulting, training and support.
http://free-electrons.com

[Buildroot] Plan of libffi support?

[Thomas Petazzoni]

Dear Mischa Jonker,

On Mon, 22 Apr 2013 13:37:24 +0200, Mischa Jonker wrote:

> In the following patch series I've added ARC support to the "master" tree
> of BuildRoot. As ARC support is not yet in all upstream open source packages,
> I've taken the freedom to add an option for an additional download site, from
> which ARC-specific versions of gcc, binutils, etc. can be downloaded.
> 
> ARC will be in Linux 3.9, so that would be the first package that can be
> removed from this ARC-specific download site.
> 
> The below patchset builds the toolchain, and a working root file system. Most
> simple packages build OK, but mplayer for instance does not have ARC support,
> and there are probably others as well.
> 
> Could you please have a look at the patches and let me know what to do to
> make them BuildRoot-worthy?

Do you have plans to get ARC support in libffi
<http://sourceware.org/libffi/> ? This library requires some
architecture-specific bits, and is used as a dependency for the Python
interpreter, but also more importantly for the glib library from the
Gtk world. And this glib library is used as a dependency in gazillions
of packages: Gtk+, GStreamer, Bluez-utils, Connman, and many, many more
things. For this reason, having an architecture supported in Buildroot
that doesn't have libffi support is a big pain, because we have to add
the "depends on !BR2_arc && !BR2_arceb" on all the packages that have
Glib as a dependency in their dependency chain.

So, we can live for a while without libffi support, but it would be
good to know if libffi support is somewhere in your plans in the future.

Thanks!

Thomas
-- 
Thomas Petazzoni, Free Electrons
Kernel, drivers, real-time and embedded Linux
development, consulting, training and support.
http://free-electrons.com

[Buildroot] Plan of libffi support?

[Mischa Jonker]

Hello Thomas, Arnout, mailinglist,

First of all many thanks for your quick review, I'm preparing a v2 set of patches which should be ready later today. 

Regarding your remark on libffi:

> Do you have plans to get ARC support in libffi <http://sourceware.org/libffi/> ? This library requires some architecture-specific bits,
> and is used as a dependency for the Python interpreter, but also more importantly for the glib library from the Gtk world. And this
> glib library is used as a dependency in gazillions of packages: Gtk+, GStreamer, Bluez-utils, Connman, and many, many more things. 

> So, we can live for a while without libffi support, but it would be good to know if libffi support is somewhere in 
> your plans in the future.

Yes, it makes perfect sense to add support for ARC here. So this is something that we are definitely planning to do in the coming
weeks. In fact, if you have other suggestions of packages that would require specific ARC support, please let me know, so that we
can plan for these as well (if it makes sense).

Thanks again,

Mischa

[Buildroot] Plan of libffi support?

[Thomas Petazzoni]

Dear Mischa Jonker,

On Wed, 24 Apr 2013 06:38:29 +0000, Mischa Jonker wrote:

> Yes, it makes perfect sense to add support for ARC here. So this is
> something that we are definitely planning to do in the coming weeks.

Excellent!

> In fact, if you have other suggestions of packages that would require
> specific ARC support, please let me know, so that we can plan for
> these as well (if it makes sense).

From a Buildroot perspective, libffi is really the most annoying
architecture-specific part because it has many, many reverse
dependencies that would all have to be disabled specifically for ARC.
And also because adding a new architecture support in libffi is not
just a matter of adding a few additional defines, it requires a fairly
intimate knowledge of the instruction set and the calling conventions.

The other packages that I can think of that are probably useful when
you start a new architecture are things like strace and ltrace.

But anyway, once the ARC port is in mainline Buildroot, I'll add an ARC
configuration to our autobuilders, and we'll quickly see where the
problems are :-)

Best regards,

Thomas
-- 
Thomas Petazzoni, Free Electrons
Kernel, drivers, real-time and embedded Linux
development, consulting, training and support.
http://free-electrons.com