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Diffstat (limited to 'configure.in')
| -rw-r--r-- | configure.in | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/configure.in b/configure.in index b8b4478abc..10e9e8155e 100644 --- a/configure.in +++ b/configure.in @@ -485,6 +485,9 @@ AC_C_CHAR_UNSIGNED AC_C_INLINE AC_C_VOLATILE +AS_CASE(":$ac_cv_c_const:$ac_cv_c_volatile:", + [*:no:*], [AC_MSG_ERROR(ANSI C-conforming const and volatile are mandatory)]) + AC_CHECK_TYPES([long long, off_t]) AC_CACHE_CHECK([char bit], [rb_cv_char_bit], |