diff options
Diffstat (limited to 'libstdc++-v3/acinclude.m4')
| -rw-r--r-- | libstdc++-v3/acinclude.m4 | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/libstdc++-v3/acinclude.m4 b/libstdc++-v3/acinclude.m4 index d507c390451..42bd5724b0b 100644 --- a/libstdc++-v3/acinclude.m4 +++ b/libstdc++-v3/acinclude.m4 @@ -2304,7 +2304,8 @@ AC_DEFUN([GLIBCXX_CHECK_MATH11_PROTO], [ AC_MSG_CHECKING([for obsolete isnan function in <math.h>]) AC_CACHE_VAL(glibcxx_cv_obsolete_isnan, [ AC_COMPILE_IFELSE([AC_LANG_SOURCE( - [#include <math.h> + [#define _GLIBCXX_INCLUDE_NEXT_C_HEADERS + #include <math.h> #undef isnan namespace std { using ::isnan; |