diff options
| -rw-r--r-- | config/lf_cxx.m4 | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/config/lf_cxx.m4 b/config/lf_cxx.m4 index c2b3cd539..9465290b9 100644 --- a/config/lf_cxx.m4 +++ b/config/lf_cxx.m4 @@ -85,7 +85,7 @@ AC_DEFUN([LF_CXX_PORTABILITY],[ dnl Test whether C++ has std::isnan AC_MSG_CHECKING(whether C++ has std::isnan) - AC_TRY_COMPILE([#include <math.h>], [ + AC_TRY_COMPILE([#include <cmath>], [ std::isnan(0); ], [ AC_MSG_RESULT(yes) AC_DEFINE(CXX_HAS_STD_ISNAN,[],[Define if has std::isnan]) ], |