diff options
| author | Dave Airlie <[email protected]> | 2015-01-21 16:40:26 +1000 |
|---|---|---|
| committer | Dave Airlie <[email protected]> | 2015-01-27 10:27:56 +1000 |
| commit | ea9ae5d51abb057ca5c200620da46f7339d07617 (patch) | |
| tree | d0d9ef85b2d6d13a74c2e8df527f7e5fa407daae /configure.ac | |
| parent | 2e2087a9ebe1f047dff217ab084972935eb52d1b (diff) | |
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: Dave Airlie <[email protected]>
Diffstat (limited to 'configure.ac')
| -rw-r--r-- | configure.ac | 12 |
1 files changed, 11 insertions, 1 deletions
diff --git a/configure.ac b/configure.ac index 2b7f5768640..c2d775eea9c 100644 --- a/configure.ac +++ b/configure.ac @@ -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 |