diff options
Diffstat (limited to 'm4/ptrdiff.m4')
| -rw-r--r-- | m4/ptrdiff.m4 | 12 |
1 files changed, 12 insertions, 0 deletions
diff --git a/m4/ptrdiff.m4 b/m4/ptrdiff.m4 new file mode 100644 index 000000000..85bf4aceb --- /dev/null +++ b/m4/ptrdiff.m4 @@ -0,0 +1,12 @@ +# From Ulrich Drepper. + +# serial 1 + +AC_DEFUN(AM_TYPE_PTRDIFF_T, + [AC_CACHE_CHECK([for ptrdiff_t], am_cv_type_ptrdiff_t, + [AC_TRY_COMPILE([#include <stddef.h>], [ptrdiff_t p], + am_cv_type_ptrdiff_t=yes, am_cv_type_ptrdiff_t=no)]) + if test $am_cv_type_ptrdiff_t = yes; then + AC_DEFINE(HAVE_PTRDIFF_T) + fi +]) |