diff options
| -rw-r--r-- | configure.ac | 10 |
1 files changed, 8 insertions, 2 deletions
diff --git a/configure.ac b/configure.ac index 65d3671..f5c01cc 100644 --- a/configure.ac +++ b/configure.ac @@ -80,12 +80,18 @@ esac AM_CONDITIONAL(WIN32, test x$win32 = xtrue) # Check if we need libm for fmin +CACHED_CFLAGS="$CFLAGS" +CFLAGS="-O0" AC_CACHE_CHECK(if fmin is a builtin function, ac_cv_fmin_builtin, - AC_TRY_COMPILE([ + AC_TRY_LINK([ #include <math.h> + #include <float.h> ], [ - fmin(0.1f, 0.2f); + double val = 3.1415f * 0.55555f; + double diff = fmin(val, DBL_MAX); + if (diff > 0) return 1; ], ac_cv_fmin_builtin=yes, ac_cv_fmin_builtin=no)) +CFLAGS="$CACHED_CFLAGS" # Check if struct tm has a tm_gmtoff member AC_CACHE_CHECK(for tm_gmtoff in struct tm, ac_cv_struct_tm_gmtoff, |