Partially revert "Merge commit '71a49fe25f2e4468fbbadbebef8d073b1b3cc1a5'"

Revert back to the test as done by commit af7a75cb517141f649cbbe0a9dcdb4854359b740,
where it was changed to compile and not just preprocess to fix build failures on
FreeBSD with gcc 4.7

Signed-off-by: James Almer <jamrial@gmail.com>

diff --git a/configure b/configure
index 8e4775b..ae0edda 100755 (executable)
--- a/configure
+++ b/configure
@@ -4833,7 +4833,7 @@ check_cxxflags -std=c++11 || check_cxxflags -std=c++0x
 
 # some compilers silently accept -std=c11, so we also need to check that the
 # version macro is defined properly
-check_cpp_condition ctype.h  "__STDC_VERSION__ >= 201112L" -std=c11 &&
+test_cflags_cc -std=c11 ctype.h "__STDC_VERSION__ >= 201112L" &&
     add_cflags -std=c11 ||
     check_cflags -std=c99