diff options
Diffstat (limited to 'configure.ac')
-rw-r--r-- | configure.ac | 8 |
1 files changed, 7 insertions, 1 deletions
diff --git a/configure.ac b/configure.ac index cbcda46c8..95ff8b3d2 100644 --- a/configure.ac +++ b/configure.ac @@ -430,6 +430,7 @@ AC_CACHE_VAL([scanf_cv_alloc_modifier], [AC_COMPILE_IFELSE([AC_LANG_SOURCE([ #include <stdio.h> + #include <unistd.h> #ifdef __GLIBC__ @@ -437,8 +438,13 @@ AC_CACHE_VAL([scanf_cv_alloc_modifier], #error %m is not available #endif - #else + #elif defined(_POSIX_VERSION) + #if _POSIX_VERSION < 200809L + #error %m is not available + #endif + + #else #error Your C-library is not supported. #endif ])], |