From: Shiz <hi@shiz.me>
Date: Mon, 3 Aug 2015 10:44:44 +0000 (+0200)
Subject: configure: Silence error messages when probing compiler
X-Git-Tag: android-x86-7.1-r1~252^2~2126
X-Git-Url: http://git.osdn.net/view?a=commitdiff_plain;h=b197f78329615893201c0e241d00b71b7c749dbb;p=android-x86%2Fexternal-ffmpeg.git

configure: Silence error messages when probing compiler

On Xcode's clang on OS X, $cc --version will output a 'Configured with:'
line to stderr, which clobbers the configure script output. As this line
serves no further purpose, it should be silenced.

The same applies to apple-gcc 4.2.1, which complains that it can not
understand the kernel version it is running on.

Signed-off-by: Luca Barbato <lu_zero@gentoo.org>
---

diff --git a/configure b/configure
index 482be4306c..2c3e77a77d 100755
--- a/configure
+++ b/configure
@@ -2939,8 +2939,8 @@ probe_cc(){
 
     if $_cc -v 2>&1 | grep -q '^gcc.*LLVM'; then
         _type=llvm_gcc
-        gcc_extra_ver=$(expr "$($_cc --version | head -n1)" : '.*\((.*)\)')
-        _ident="llvm-gcc $($_cc -dumpversion) $gcc_extra_ver"
+        gcc_extra_ver=$(expr "$($_cc --version 2>/dev/null | head -n1)" : '.*\((.*)\)')
+        _ident="llvm-gcc $($_cc -dumpversion 2>/dev/null) $gcc_extra_ver"
         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
         _cflags_speed='-O3'
         _cflags_size='-Os'
@@ -3003,7 +3003,7 @@ probe_cc(){
         _flags_filter=tms470_flags
     elif $_cc -v 2>&1 | grep -q clang; then
         _type=clang
-        _ident=$($_cc --version | head -n1)
+        _ident=$($_cc --version 2>/dev/null | head -n1)
         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
         _cflags_speed='-O3'
         _cflags_size='-Os'