[FFmpeg-devel] [PATCH] configure: Check build with some header not just preprocessing for testing --std=c11

[Michael Niedermayer]

Fixes build failure on FreeBSD with gcc 4.7

Signed-off-by: Michael Niedermayer <michael at niedermayer.cc>
---
 configure | 9 +++++----
 1 file changed, 5 insertions(+), 4 deletions(-)

diff --git a/configure b/configure
index d723b8e2a6..706346abc9 100755
--- a/configure
+++ b/configure
@@ -1201,13 +1201,14 @@ check_cpp_condition(){
 EOF
 }
 
-test_cflags_cpp(){
-    log test_cflags_cpp "$@"
+test_cflags_cc(){
+    log test_cflags_cc "$@"
     flags=$1
     condition=$2
     shift 2
     set -- $($cflags_filter "$flags")
-    check_cpp "$@" <<EOF
+    check_cc "$@" <<EOF
+#include <ctype.h>
 #if !($condition)
 #error "unsatisfied condition: $condition"
 #endif
@@ -4625,7 +4626,7 @@ add_cxxflags -std=c++98
 
 # some compilers silently accept -std=c11, so we also need to check that the
 # version macro is defined properly
-if test_cflags_cpp -std=c11 "__STDC_VERSION__ >= 201112L"; then
+if test_cflags_cc -std=c11 "__STDC_VERSION__ >= 201112L"; then
     add_cflags -std=c11
 else
     check_cflags -std=c99
-- 
2.11.0