diff options
| -rw-r--r-- | configure.ac | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/configure.ac b/configure.ac index a353e0a..56ca87f 100644 --- a/configure.ac +++ b/configure.ac @@ -20,7 +20,8 @@ env 1>&AS_MESSAGE_LOG_FD AC_MSG_RESULT([ok]) dnl Check for compiler and features first. -AC_PROG_CC +AC_PROG_CC_C99 +AS_IF([test "$ac_cv_prog_cc_c99" = "no"], [AC_MSG_ERROR([A C99+ compiler is required])]) AM_PROG_CC_C_O AC_ISC_POSIX AC_USE_SYSTEM_EXTENSIONS |