[Buildroot] [PATCH 4/4] toolchain-external: add OSELAS 2013.12.2 Cortex-M3 toolchain

[Romain Naour <romain.naour@openwide.fr>]

Hi Ezequiel,

Le 22/01/2015 19:33, Ezequiel Garcia a ?crit :
> From: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
> 
> Binary toolchain based on uClibc for Cortex-M3 processor based on GCC
> 4.8.2.
> 
> Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
> Signed-off-by: Guido Mart?nez <guido@vanguardiasur.com.ar>
> ---
>  toolchain/toolchain-external/Config.in               | 12 ++++++++++++
>  toolchain/toolchain-external/toolchain-external.hash |  3 +++
>  toolchain/toolchain-external/toolchain-external.mk   | 11 +++++++++++
>  3 files changed, 26 insertions(+)
> 
> diff --git a/toolchain/toolchain-external/Config.in b/toolchain/toolchain-external/Config.in
> index 3b0f4cb..c9f2bfe 100644
> --- a/toolchain/toolchain-external/Config.in
> +++ b/toolchain/toolchain-external/Config.in
> @@ -192,6 +192,17 @@ config BR2_TOOLCHAIN_EXTERNAL_ARAGO_ARMV5TE_201109
>  
>  	  This toolchain uses software-floating point.
>  
> +config BR2_TOOLCHAIN_EXTERNAL_OSELAS_ARM_CORTEX_M3
> +	bool "OSELAS ARM Cortex-M3"
> +	depends on BR2_arm
> +	depends on BR2_HOSTARCH = "x86_64" || BR2_HOSTARCH = "x86"
> +	select BR2_TOOLCHAIN_HEADERS_AT_LEAST_3_12
> +	select BR2_TOOLCHAIN_EXTERNAL_UCLIBC
> +	select BR2_LARGEFILE
> +	select BR2_INET_IPV6
> +	select BR2_HOSTARCH_NEEDS_IA32_LIBS
> +	select BR2_ARM_TOOLCHAIN_SKIP_CHECK
> +
>  config BR2_TOOLCHAIN_EXTERNAL_CODESOURCERY_MIPS201411
>  	bool "Sourcery CodeBench MIPS 2014.11"
>  	depends on BR2_mips || BR2_mipsel || BR2_mips64 || BR2_mips64el
> @@ -970,6 +981,7 @@ config BR2_TOOLCHAIN_EXTERNAL_PREFIX
>  	default "arm-none-linux-gnueabi" if BR2_TOOLCHAIN_EXTERNAL_CODESOURCERY_ARM201405
>  	default "arm-arago-linux-gnueabi" if BR2_TOOLCHAIN_EXTERNAL_ARAGO_ARMV7A_201109
>  	default "arm-arago-linux-gnueabi" if BR2_TOOLCHAIN_EXTERNAL_ARAGO_ARMV5TE_201109
> +	default "arm-cortexm3-uclinuxeabi" if BR2_TOOLCHAIN_EXTERNAL_OSELAS_ARM_CORTEX_M3
>  	default "aarch64-linux-gnu"      if BR2_TOOLCHAIN_EXTERNAL_LINARO_AARCH64
>  	default "aarch64-linux-gnu"      if BR2_TOOLCHAIN_EXTERNAL_CODESOURCERY_AARCH64
>  	default "microblazeel-unknown-linux-gnu" if BR2_TOOLCHAIN_EXTERNAL_XILINX_MICROBLAZEEL_14_3
> diff --git a/toolchain/toolchain-external/toolchain-external.hash b/toolchain/toolchain-external/toolchain-external.hash
> index 7f211db..f00cce4 100644
> --- a/toolchain/toolchain-external/toolchain-external.hash
> +++ b/toolchain/toolchain-external/toolchain-external.hash
> @@ -56,3 +56,6 @@ sha256 3e1c7c53fadfd3346ab60386c573f07f0617ab119546ec8cb93bc20c23cff2b3  lin32-m
>  sha256 b72f7be654a75bb643372f3909de7b8739f0f56bdf8bea98fea41dcecefe6b6b  microblazeel-unknown-linux-gnu.tgz
>  sha256 ed2fea022f2def257ca6db09911b73c7102aaa1792d2da2d81371a763e5c2eff  lin32-microblaze-unknown-linux-gnu_14.3_early.tar.xz
>  sha256 53ee0b1ad50e651eb14d0b53044b90e7bf7e3cb341ee57fe575bc4c4e142ea37  microblaze-unknown-linux-gnu.tgz
> +
> +# OSELAS Cortex-M3 toolchain
> +sha1  b5a85b489e32c3730673b74e998e08444e36aab4  oselas.toolchain-2013.12.2-arm-cortexm3-uclinuxeabi-gcc-4.8.2-uclibc-0.9.33.2-binutils-2.24-kernel-3.12-sanitized_2013.12.2_i386.deb
> diff --git a/toolchain/toolchain-external/toolchain-external.mk b/toolchain/toolchain-external/toolchain-external.mk
> index 5a69eb8..718bedc 100644
> --- a/toolchain/toolchain-external/toolchain-external.mk
> +++ b/toolchain/toolchain-external/toolchain-external.mk
> @@ -287,6 +287,9 @@ TOOLCHAIN_EXTERNAL_SOURCE = mips-2014.05-27-mips-linux-gnu-i686-pc-linux-gnu.tar
>  else ifeq ($(BR2_TOOLCHAIN_EXTERNAL_CODESOURCERY_MIPS201411),y)
>  TOOLCHAIN_EXTERNAL_SITE = http://sourcery.mentor.com/public/gnu_toolchain/mips-linux-gnu/
>  TOOLCHAIN_EXTERNAL_SOURCE = mips-2014.11-22-mips-linux-gnu-i686-pc-linux-gnu.tar.bz2
> +else ifeq ($(BR2_TOOLCHAIN_EXTERNAL_OSELAS_ARM_CORTEX_M3),y)
> +TOOLCHAIN_EXTERNAL_SITE = http://debian.pengutronix.de/debian/pool/main/o/oselas.toolchain-2013.12.2-arm-cortexm3-uclinuxeabi-gcc-4.8.2-uclibc-0.9.33.2-binutils-2.24-kernel-3.12-sanitized/
> +TOOLCHAIN_EXTERNAL_SOURCE = oselas.toolchain-2013.12.2-arm-cortexm3-uclinuxeabi-gcc-4.8.2-uclibc-0.9.33.2-binutils-2.24-kernel-3.12-sanitized_2013.12.2_i386.deb
>  else ifeq ($(BR2_TOOLCHAIN_EXTERNAL_CODESOURCERY_NIOSII201305),y)
>  TOOLCHAIN_EXTERNAL_SITE = http://sourcery.mentor.com/public/gnu_toolchain/nios2-linux-gnu/
>  TOOLCHAIN_EXTERNAL_SOURCE = sourceryg++-2013.05-43-nios2-linux-gnu-i686-pc-linux-gnu.tar.bz2
> @@ -417,6 +420,14 @@ define TOOLCHAIN_EXTERNAL_EXTRACT_CMDS
>  	$(call suitable-extractor,$(TOOLCHAIN_EXTERNAL_EXTRA_DOWNLOADS)) $(DL_DIR)/$(TOOLCHAIN_EXTERNAL_EXTRA_DOWNLOADS) | \
>  		$(TAR) $(TAR_STRIP_COMPONENTS)=3 --hard-dereference -C $(TOOLCHAIN_EXTERNAL_INSTALL_DIR) $(TAR_OPTIONS) -
>  endef
> +else ifeq ($(BR2_TOOLCHAIN_EXTERNAL_OSELAS_ARM_CORTEX_M3),y)
> +# Special handling for OSELAS toolchains
> +define TOOLCHAIN_EXTERNAL_EXTRACT_CMDS
> +	mkdir -p $(TOOLCHAIN_EXTERNAL_INSTALL_DIR)
> +	(cd $(@D); ar xvf $(DL_DIR)/$(TOOLCHAIN_EXTERNAL_SOURCE))
> +	$(call suitable-extractor,data.tar.xz) $(@D)/data.tar.xz | \
> +		$(TAR) $(TAR_STRIP_COMPONENTS)=5 -C $(TOOLCHAIN_EXTERNAL_INSTALL_DIR) $(TAR_OPTIONS) -
> +endef
>  else ifneq ($(TOOLCHAIN_EXTERNAL_SOURCE),)
>  # Normal handling of toolchain tarball extraction.
>  define TOOLCHAIN_EXTERNAL_EXTRACT_CMDS
> 

I tried to build some packages to test this toolchain and it fail with
Busybox :-/

/home/naourr/git/buildroot/test/cortexM/host/opt/ext-toolchain/arm-cortexm3-uclinuxeabi/bin/ld.real:
warning: cannot find entry symbol lf2flt; defaulting to 00000000
networking/lib.a(nslookup.o): In function `set_default_dns':
nslookup.c:(.text.set_default_dns+0x12): undefined reference to `__res_state'
nslookup.c:(.text.set_default_dns+0x2c): undefined reference to `__res_state'
networking/lib.a(nslookup.o): In function `nslookup_main':
nslookup.c:(.text.nslookup_main+0x16): undefined reference to `__res_init'
nslookup.c:(.text.nslookup_main+0x20): undefined reference to `__res_state'
collect2: error: ld returned 1 exit status
make[1]: *** [busybox_unstripped] Erreur 1

That's because __UCLIBC_HAS_RESOLVER_SUPPORT__ is not defined in the toolchain
configuration:
opt/sysroot-arm-cortexm3-uclinuxeabi/usr/include/bits/uClibc_config.h

To support this toolchain, we need to have another toolchain option named
BR2_TOOLCHAIN_HAS_RESOLVER_SUPPORT in order to be able to disable
packages/options which needs resolver support.

Best regards,
Romain Naour