Commit ea9ae5d5 authored by Dave Airlie's avatar Dave Airlie

mesa/autoconf: attempt to use gnu99 on older gcc compilers

anonymous structs/union don't work with c99 but do work with gnu99
on gcc 4.4.
Signed-off-by: 's avatarDave Airlie <airlied@redhat.com>
parent 2e2087a9
......@@ -145,6 +145,7 @@ AC_MSG_RESULT([$acv_mesa_CLANG])
dnl If we're using GCC, make sure that it is at least version 4.2.0. Older
dnl versions are explictly not supported.
GEN_ASM_OFFSETS=no
USE_GNU99=no
if test "x$GCC" = xyes -a "x$acv_mesa_CLANG" = xno; then
AC_MSG_CHECKING([whether gcc version is sufficient])
major=0
......@@ -163,6 +164,9 @@ if test "x$GCC" = xyes -a "x$acv_mesa_CLANG" = xno; then
AC_MSG_RESULT([yes])
fi
if test $GCC_VERSION_MAJOR -lt 4 -o $GCC_VERSION_MAJOR -eq 4 -a $GCC_VERSION_MINOR -lt 6 ; then
USE_GNU99=yes
fi
if test "x$cross_compiling" = xyes; then
GEN_ASM_OFFSETS=yes
fi
......@@ -221,7 +225,13 @@ esac
dnl Add flags for gcc and g++
if test "x$GCC" = xyes; then
CFLAGS="$CFLAGS -Wall -std=c99"
CFLAGS="$CFLAGS -Wall"
if test "x$USE_GNU99" = xyes; then
CFLAGS="$CFLAGS -std=gnu99"
else
CFLAGS="$CFLAGS -std=c99"
fi
# Enable -Werror=implicit-function-declaration and
# -Werror=missing-prototypes, if available, or otherwise, just
......
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