[Qemu-devel] [PATCH 0/5] Remove which use

[Qemu-devel] [PATCH 0/5] Remove which use

[Juan Quintela]

This series substitute "which" use by "type" one.
It is similar to Loïc patch, just that I didn't use path_of() because
it was used just once.

This addresses commets about using && instead of -a.
It also remove the search for "grep" in kvm code.  grep is assumed in lots
of other places in configure already.

Riku: are you going to pick the missing symbols patch (its is for linux-user)
      or should Anthony pick it?

Later, Juan.

Juan Quintela (3):
  substitute all uses of which by type
  Check for sdl-config before calling it
  Remove check for grep

Loïc Minier (2):
  Add -static earlier to LDFLAGS for compile_prog()
  Fix missing symbols in .rel/.rela.plt sections

cc: riku.voipio@nokia.com

 configure |   37 +++++++++++++++++++++++--------------
 i386.ld   |   16 ++++++++++++++--
 x86_64.ld |   16 ++++++++++++++--
 3 files changed, 51 insertions(+), 18 deletions(-)

[Qemu-devel] [PATCH 1/5] substitute all uses of which by type

[Juan Quintela]

Except in one case, we are only interested in knowing if a command
exist, not is path.  Just create prog_exists() function that does this
check.

Signed-off-by: Juan Quintela <quintela@redhat.com>
---
 configure |   25 ++++++++++++++-----------
 1 files changed, 14 insertions(+), 11 deletions(-)

diff --git a/configure b/configure
index 5631bbb..71edaf5 100755
--- a/configure
+++ b/configure
@@ -27,6 +27,11 @@ compile_prog() {
   $cc $QEMU_CFLAGS $local_cflags -o $TMPE $TMPC $LDFLAGS $local_ldflags > /dev/null 2> /dev/null
 }

+prog_exist() {
+    prog="$1"
+    type $prog > /dev/null 2> /dev/null
+}
+
 # default parameters
 cpu=""
 prefix=""
@@ -763,21 +768,19 @@ fi
 # Solaris specific configure tool chain decisions
 #
 if test "$solaris" = "yes" ; then
-  solinst=`which $install 2> /dev/null | /usr/bin/grep -v "no $install in"`
-  if test -z "$solinst" ; then
+  if ! prog_exist "$install" ; then
     echo "Solaris install program not found. Use --install=/usr/ucb/install or"
     echo "install fileutils from www.blastwave.org using pkg-get -i fileutils"
     echo "to get ginstall which is used by default (which lives in /opt/csw/bin)"
     exit 1
   fi
-  if test "$solinst" = "/usr/sbin/install" ; then
+  if type "$install" 2> /dev/null | grep /usr/bin/install >/dev/null ; then
     echo "Error: Solaris /usr/sbin/install is not an appropriate install program."
     echo "try ginstall from the GNU fileutils available from www.blastwave.org"
     echo "using pkg-get -i fileutils, or use --install=/usr/ucb/install"
     exit 1
   fi
-  sol_ar=`which ar 2> /dev/null | /usr/bin/grep -v "no ar in"`
-  if test -z "$sol_ar" ; then
+  if ! prog_exist "ar" ; then
     echo "Error: No path includes ar"
     if test -f /usr/ccs/bin/ar ; then
       echo "Add /usr/ccs/bin to your path and rerun configure"
@@ -969,7 +972,7 @@ fi
 # pkgconfig probe

 pkgconfig="${cross_prefix}pkg-config"
-if ! test -x "$(which $pkgconfig 2>/dev/null)"; then
+if ! prog_exist "$pkgconfig" ; then
   # likely not cross compiling, or hope for the best
   pkgconfig=pkg-config
 fi
@@ -977,7 +980,7 @@ fi
 ##########################################
 # Sparse probe
 if test "$sparse" != "no" ; then
-  if test -x "$(which cgcc 2>/dev/null)"; then
+  if prog_exist "cgcc" ; then
     sparse=yes
   else
     if test "$sparse" = "yes" ; then
@@ -1419,8 +1422,8 @@ EOF
     fi
   else
     if test "$kvm" = "yes" ; then
-      if [ -x "`which awk 2>/dev/null`" ] && \
-         [ -x "`which grep 2>/dev/null`" ]; then
+      if prog_exist "awk" && \
+         prog_exist "grep"; then
         kvmerr=`LANG=C $cc $QEMU_CFLAGS -o $TMPE $kvm_cflags $TMPC 2>&1 \
 	| grep "error: " \
 	| awk -F "error: " '{if (NR>1) printf(", "); printf("%s",$2);}'`
@@ -1689,8 +1692,8 @@ fi

 # Check if tools are available to build documentation.
 if test "$docs" != "no" ; then
-  if test -x "`which texi2html 2>/dev/null`" -a \
-          -x "`which pod2man 2>/dev/null`" ; then
+  if prog_exist "texi2html" && \
+     prog_exist "pod2man" ; then
     docs=yes
   else
     if test "$docs" = "yes" ; then
-- 
1.6.6

Re: [Qemu-devel] [PATCH 1/5] substitute all uses of which by type

[Stefan Weil]

Juan Quintela schrieb:
> Except in one case, we are only interested in knowing if a command
> exist, not is path. Just create prog_exists() function that does this
> check.
>
> Signed-off-by: Juan Quintela <quintela@redhat.com>

See comments below. The changes proposed are a suggestion, no real need.

Regards,
Stefan

> ---
> configure | 25 ++++++++++++++-----------
> 1 files changed, 14 insertions(+), 11 deletions(-)
>
> diff --git a/configure b/configure
> index 5631bbb..71edaf5 100755
> --- a/configure
> +++ b/configure
> @@ -27,6 +27,11 @@ compile_prog() {
> $cc $QEMU_CFLAGS $local_cflags -o $TMPE $TMPC $LDFLAGS $local_ldflags
> > /dev/null 2> /dev/null
> }
>
> +prog_exist() {
> + prog="$1"
> + type $prog > /dev/null 2> /dev/null

I personally prefer
+ type $prog >/dev/null 2>&1
because it is shorter (no whitespace after >, no duplicate /dev/null).
Currently, all variants to write this pattern are used.
Maybe we can reduce this.

> +}
> +
> # default parameters
> cpu=""
> prefix=""
> @@ -763,21 +768,19 @@ fi
> # Solaris specific configure tool chain decisions
> #
> if test "$solaris" = "yes" ; then
> - solinst=`which $install 2> /dev/null | /usr/bin/grep -v "no $install
> in"`
2>/dev/null
> - if test -z "$solinst" ; then
> + if ! prog_exist "$install" ; then
> echo "Solaris install program not found. Use
> --install=/usr/ucb/install or"
> echo "install fileutils from www.blastwave.org using pkg-get -i fileutils"
> echo "to get ginstall which is used by default (which lives in
> /opt/csw/bin)"
> exit 1
> fi
> - if test "$solinst" = "/usr/sbin/install" ; then
> + if type "$install" 2> /dev/null | grep /usr/bin/install >/dev/null ;
> then
2>/dev/null
> echo "Error: Solaris /usr/sbin/install is not an appropriate install
> program."
> echo "try ginstall from the GNU fileutils available from
> www.blastwave.org"
> echo "using pkg-get -i fileutils, or use --install=/usr/ucb/install"
> exit 1
> fi
> - sol_ar=`which ar 2> /dev/null | /usr/bin/grep -v "no ar in"`
> - if test -z "$sol_ar" ; then
> + if ! prog_exist "ar" ; then
> echo "Error: No path includes ar"
> if test -f /usr/ccs/bin/ar ; then
> echo "Add /usr/ccs/bin to your path and rerun configure"
> @@ -969,7 +972,7 @@ fi
> # pkgconfig probe
>
> pkgconfig="${cross_prefix}pkg-config"
> -if ! test -x "$(which $pkgconfig 2>/dev/null)"; then
> +if ! prog_exist "$pkgconfig" ; then
> # likely not cross compiling, or hope for the best
> pkgconfig=pkg-config
> fi
> @@ -977,7 +980,7 @@ fi
> ##########################################
> # Sparse probe
> if test "$sparse" != "no" ; then
> - if test -x "$(which cgcc 2>/dev/null)"; then
> + if prog_exist "cgcc" ; then
> sparse=yes
> else
> if test "$sparse" = "yes" ; then
> @@ -1419,8 +1422,8 @@ EOF
> fi
> else
> if test "$kvm" = "yes" ; then
> - if [ -x "`which awk 2>/dev/null`" ] && \
> - [ -x "`which grep 2>/dev/null`" ]; then
> + if prog_exist "awk" && \
> + prog_exist "grep"; then
> kvmerr=`LANG=C $cc $QEMU_CFLAGS -o $TMPE $kvm_cflags $TMPC 2>&1 \
> | grep "error: " \
> | awk -F "error: " '{if (NR>1) printf(", "); printf("%s",$2);}'`
> @@ -1689,8 +1692,8 @@ fi
>
> # Check if tools are available to build documentation.
> if test "$docs" != "no" ; then
> - if test -x "`which texi2html 2>/dev/null`" -a \
> - -x "`which pod2man 2>/dev/null`" ; then
> + if prog_exist "texi2html" && \
> + prog_exist "pod2man" ; then
> docs=yes
> else
> if test "$docs" = "yes" ; then

[Qemu-devel] Re: [PATCH 1/5] substitute all uses of which by type

[Juan Quintela]

Stefan Weil <weil@mail.berlios.de> wrote:
> Juan Quintela schrieb:
>> Except in one case, we are only interested in knowing if a command
>> exist, not is path. Just create prog_exists() function that does this
>> check.
>>
>> Signed-off-by: Juan Quintela <quintela@redhat.com>
>
> See comments below. The changes proposed are a suggestion, no real need.
>
> Regards,
> Stefan
>
>> ---
>> configure | 25 ++++++++++++++-----------
>> 1 files changed, 14 insertions(+), 11 deletions(-)
>>
>> diff --git a/configure b/configure
>> index 5631bbb..71edaf5 100755
>> --- a/configure
>> +++ b/configure
>> @@ -27,6 +27,11 @@ compile_prog() {
>> $cc $QEMU_CFLAGS $local_cflags -o $TMPE $TMPC $LDFLAGS $local_ldflags
>> > /dev/null 2> /dev/null
>> }
>>
>> +prog_exist() {
>> + prog="$1"
>> + type $prog > /dev/null 2> /dev/null
>
> I personally prefer
> + type $prog >/dev/null 2>&1
> because it is shorter (no whitespace after >, no duplicate /dev/null).
> Currently, all variants to write this pattern are used.
> Maybe we can reduce this.

Agreed.  For next series if there is not needed a rebase.

Later, Juan.

[Qemu-devel] [PATCH 2/5] Check for sdl-config before calling it

[Juan Quintela]

Adapted Loïc Minier version to not use which.

cc:  Loïc Minier <lool@dooz.org>
Signed-off-by: Juan Quintela <quintela@redhat.com>
---
 configure |    8 +++++++-
 1 files changed, 7 insertions(+), 1 deletions(-)

diff --git a/configure b/configure
index 71edaf5..c671918 100755
--- a/configure
+++ b/configure
@@ -996,9 +996,15 @@ fi
 if $pkgconfig sdl --modversion >/dev/null 2>&1; then
   sdlconfig="$pkgconfig sdl"
   _sdlversion=`$sdlconfig --modversion 2>/dev/null | sed 's/[^0-9]//g'`
-else
+else if prog_exist "sdl-config"; then
   sdlconfig='sdl-config'
   _sdlversion=`$sdlconfig --version | sed 's/[^0-9]//g'`
+else
+  if test "$sdl" = "yes" ; then
+    feature_not_found "sdl"
+  fi
+  sdl=no
+fi
 fi

 sdl_too_old=no
-- 
1.6.6

[Qemu-devel] [PATCH 3/5] Add -static earlier to LDFLAGS for compile_prog()

[Juan Quintela]

From: Loïc Minier <lool@dooz.org>

Add -static to LDFLAGS earlier as to run the compile_prog() tests with
this flags, this will avoid turning on features for which a shared
library is available but not a static one.

Signed-off-by: Loïc Minier <lool@dooz.org>
Signed-off-by: Juan Quintela <quintela@redhat.com>
---
 configure |    5 +++--
 1 files changed, 3 insertions(+), 2 deletions(-)

diff --git a/configure b/configure
index c671918..83f8b26 100755
--- a/configure
+++ b/configure
@@ -456,7 +456,9 @@ for opt do
   ;;
   --enable-gprof) gprof="yes"
   ;;
-  --static) static="yes"
+  --static)
+    static="yes"
+    LDFLAGS="-static $LDFLAGS"
   ;;
   --disable-sdl) sdl="no"
   ;;
@@ -1977,7 +1979,6 @@ if test "$solaris" = "yes" ; then
 fi
 if test "$static" = "yes" ; then
   echo "CONFIG_STATIC=y" >> $config_host_mak
-  LDFLAGS="-static $LDFLAGS"
 fi
 if test $profiler = "yes" ; then
   echo "CONFIG_PROFILER=y" >> $config_host_mak
-- 
1.6.6

[Qemu-devel] [PATCH 4/5] Remove check for grep

[Juan Quintela]

The rest of configure assumes that grep is available already

Signed-off-by: Juan Quintela <quintela@redhat.com>
---
 configure |    3 +--
 1 files changed, 1 insertions(+), 2 deletions(-)

diff --git a/configure b/configure
index 83f8b26..f31be87 100755
--- a/configure
+++ b/configure
@@ -1430,8 +1430,7 @@ EOF
     fi
   else
     if test "$kvm" = "yes" ; then
-      if prog_exist "awk" && \
-         prog_exist "grep"; then
+      if prog_exist "awk" ; then
         kvmerr=`LANG=C $cc $QEMU_CFLAGS -o $TMPE $kvm_cflags $TMPC 2>&1 \
 	| grep "error: " \
 	| awk -F "error: " '{if (NR>1) printf(", "); printf("%s",$2);}'`
-- 
1.6.6

[Qemu-devel] [PATCH 5/5] Fix missing symbols in .rel/.rela.plt sections

[Juan Quintela]

From: Loïc Minier <lool@dooz.org>

Fix .rel.plt sections in the output to not only include .rel.plt
sections from the input but also the .rel.iplt sections and to define
the hidden symbols __rel_iplt_start and __rel_iplt_end around
.rel.iplt as otherwise we get undefined references to these when
linking statically to a multilib libc.a.  This fixes the static build
under i386.

Apply similar logic to rela.plt/.iplt and __rela_iplt/_plt_start/_end to
fix the static build under amd64.

Signed-off-by: Loïc Minier <lool@dooz.org>
Signed-off-by: Juan Quintela <quintela@redhat.com>
---
 i386.ld   |   16 ++++++++++++++--
 x86_64.ld |   16 ++++++++++++++--
 2 files changed, 28 insertions(+), 4 deletions(-)

diff --git a/i386.ld b/i386.ld
index f2dafec..f8df7bf 100644
--- a/i386.ld
+++ b/i386.ld
@@ -39,8 +39,20 @@ SECTIONS
   .rela.fini     : { *(.rela.fini)	}
   .rel.bss       : { *(.rel.bss)		}
   .rela.bss      : { *(.rela.bss)		}
-  .rel.plt       : { *(.rel.plt)		}
-  .rela.plt      : { *(.rela.plt)		}
+  .rel.plt      :
+  {
+    *(.rel.plt)
+    PROVIDE_HIDDEN (__rel_iplt_start = .);
+    *(.rel.iplt)
+    PROVIDE_HIDDEN (__rel_iplt_end = .);
+  }
+  .rela.plt       :
+  {
+    *(.rela.plt)
+    PROVIDE_HIDDEN (__rela_iplt_start = .);
+    *(.rela.iplt)
+    PROVIDE_HIDDEN (__rela_iplt_end = .);
+  }
   .init          : { *(.init)	} =0x47ff041f
   .text      :
   {
diff --git a/x86_64.ld b/x86_64.ld
index 24ea77d..46d8d4d 100644
--- a/x86_64.ld
+++ b/x86_64.ld
@@ -35,8 +35,20 @@ SECTIONS
   .rela.got       : { *(.rela.got) }
   .rel.bss        : { *(.rel.bss .rel.bss.* .rel.gnu.linkonce.b.*) }
   .rela.bss       : { *(.rela.bss .rela.bss.* .rela.gnu.linkonce.b.*) }
-  .rel.plt        : { *(.rel.plt) }
-  .rela.plt       : { *(.rela.plt) }
+  .rel.plt      :
+  {
+    *(.rel.plt)
+    PROVIDE_HIDDEN (__rel_iplt_start = .);
+    *(.rel.iplt)
+    PROVIDE_HIDDEN (__rel_iplt_end = .);
+  }
+  .rela.plt       :
+  {
+    *(.rela.plt)
+    PROVIDE_HIDDEN (__rela_iplt_start = .);
+    *(.rela.iplt)
+    PROVIDE_HIDDEN (__rela_iplt_end = .);
+  }
   .init           :
   {
     KEEP (*(.init))
-- 
1.6.6