diff options
Diffstat (limited to 'configure.ac')
| -rw-r--r-- | configure.ac | 7 |
1 files changed, 5 insertions, 2 deletions
diff --git a/configure.ac b/configure.ac index 9a65f85d..345a5617 100644 --- a/configure.ac +++ b/configure.ac @@ -23,8 +23,11 @@ AC_SUBST(test_suites) AC_SUBST(disable_man) m4_include(m4/feature_macros.m4) +m4_include(m4/clang.m4) dnl Checks for programs. +AC_PROG_CC +_AC_LANG_COMPILER_CLANG AC_PROG_CC_C99 if test "$ac_cv_prog_cc_c99" = no; then AC_MSG_ERROR(cannot find a C99-compatible compiler) @@ -41,8 +44,8 @@ fi # Prefer bash, needed for test.sh AC_PATH_TOOL(BASH, bash, "/bin/bash") -# If GCC, turn on warnings. -if test "x$GCC" = "xyes"; then +# If GCC (or clang), turn on warnings. +if test "$ac_compiler_gnu" = yes; then CFLAGS="$CFLAGS -Wall -W" else CFLAGS="$CFLAGS -O" |