diff options
Diffstat (limited to 'configure.ac')
| -rw-r--r-- | configure.ac | 18 |
1 files changed, 17 insertions, 1 deletions
diff --git a/configure.ac b/configure.ac index a38a5cc..2bcbedf 100644 --- a/configure.ac +++ b/configure.ac @@ -4128,7 +4128,23 @@ then ]]])], [ac_cv_have_long_long_format=yes], [ac_cv_have_long_long_format=no], - [ac_cv_have_long_long_format=no]) + [ac_cv_have_long_long_format="cross -- assuming no" + if test x$GCC = xyes; then + save_CFLAGS=$CFLAGS + CFLAGS="$CFLAGS -Werror -Wformat" + AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[ + #include <stdio.h> + #include <stddef.h> + ]], [[ + char *buffer; + sprintf(buffer, "%lld", (long long)123); + sprintf(buffer, "%lld", (long long)-123); + sprintf(buffer, "%llu", (unsigned long long)123); + ]])], + ac_cv_have_long_long_format=yes + ) + CFLAGS=$save_CFLAGS + fi]) ) AC_MSG_RESULT($ac_cv_have_long_long_format) fi |