yocto-poky/meta/recipes-devtools/gcc/gcc-5.3/0019-libgcc-sjlj-check.patch

From 7b40212ed6c0c9fe4efe51f31bccd3d9f892f238 Mon Sep 17 00:00:00 2001
From: Khem Raj <raj.khem@gmail.com>
Date: Fri, 29 Mar 2013 09:20:50 +0400
Subject: [PATCH 19/46] libgcc-sjlj-check

ac_fn_c_try_compile doesnt seem to keep the intermediate files
which are needed for sjlj test to pass since it greps into the
generated file. So we run the compiler command using AC_TRY_COMMAND
which then generates the needed .s file

Signed-off-by: Khem Raj <raj.khem@gmail.com>

Upstream-Status: Pending
---
 libgcc/configure    | 10 ++++++----
 libgcc/configure.ac | 10 ++++------
 2 files changed, 10 insertions(+), 10 deletions(-)

diff --git a/libgcc/configure b/libgcc/configure
index 203d384..6aef3e7 100644
--- a/libgcc/configure
+++ b/libgcc/configure
@@ -4570,17 +4570,19 @@ void foo ()
 }
 
 _ACEOF
-CFLAGS_hold=$CFLAGS
-CFLAGS="--save-temps -fexceptions"
 libgcc_cv_lib_sjlj_exceptions=unknown
-if ac_fn_c_try_compile; then :
+if { ac_try='${CC-cc} -fexceptions -S conftest.c -o conftest.s 1>&5'
+  { { eval echo "\"\$as_me\":${as_lineno-$LINENO}: \"$ac_try\""; } >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  $as_echo "$as_me:${as_lineno-$LINENO}: \$? = $ac_status" >&5
+  test $ac_status = 0; }; }; then
   if grep _Unwind_SjLj_Resume conftest.s >/dev/null 2>&1; then
     libgcc_cv_lib_sjlj_exceptions=yes
   elif grep _Unwind_Resume conftest.s >/dev/null 2>&1; then
     libgcc_cv_lib_sjlj_exceptions=no
   fi
 fi
-CFLAGS=$CFLAGS_hold
 rm -f conftest*
 
 fi
diff --git a/libgcc/configure.ac b/libgcc/configure.ac
index a10a952..cc324f3 100644
--- a/libgcc/configure.ac
+++ b/libgcc/configure.ac
@@ -255,16 +255,14 @@ void foo ()
   bar();
 }
 ])])
-CFLAGS_hold=$CFLAGS
-CFLAGS="--save-temps -fexceptions"
 libgcc_cv_lib_sjlj_exceptions=unknown
-AS_IF([ac_fn_c_try_compile],
-  [if grep _Unwind_SjLj_Resume conftest.s >/dev/null 2>&1; then
+if AC_TRY_COMMAND(${CC-cc} -fexceptions -S conftest.c -o conftest.s 1>&AS_MESSAGE_LOG_FD); then
+  if grep _Unwind_SjLj_Resume conftest.s >/dev/null 2>&1; then
     libgcc_cv_lib_sjlj_exceptions=yes
   elif grep _Unwind_Resume conftest.s >/dev/null 2>&1; then
     libgcc_cv_lib_sjlj_exceptions=no
-  fi])
-CFLAGS=$CFLAGS_hold
+  fi
+fi
 rm -f conftest*
 ])
 
-- 
2.6.3