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Diffstat (limited to 'm4/ulonglong.m4')
| -rw-r--r-- | m4/ulonglong.m4 | 16 |
1 files changed, 16 insertions, 0 deletions
diff --git a/m4/ulonglong.m4 b/m4/ulonglong.m4 new file mode 100644 index 000000000..afc765a3e --- /dev/null +++ b/m4/ulonglong.m4 @@ -0,0 +1,16 @@ +#serial 1 + +dnl From Paul Eggert. + +AC_DEFUN(jm_AC_TYPE_UNSIGNED_LONG_LONG, +[ + AC_CACHE_CHECK([for unsigned long long], ac_cv_type_unsigned_long_long, + [AC_TRY_COMPILE([], + [unsigned long long i = (unsigned long long) -1;], + ac_cv_type_unsigned_long_long=yes, + ac_cv_type_unsigned_long_long=no)]) + if test $ac_cv_type_unsigned_long_long = yes; then + AC_DEFINE(HAVE_UNSIGNED_LONG_LONG, 1, + [Define if you have the unsigned long long type.]) + fi +]) |