X-Git-Url: https://ruderich.org/simon/gitweb/?a=blobdiff_plain;f=configure.ac;h=6248625db45315e73f11a1899cf0cf6b8e8b93ac;hb=9862b8c8f13fe3d5a6012a8d67562bdaef48b8af;hp=a5279d06ef0dd6d1648bdd71c0beab43b7308b56;hpb=b22a078b8de5bfb84866d4f1e165b604279fe9f9;p=coloredstderr%2Fcoloredstderr.git

diff --git a/configure.ac b/configure.ac
index a5279d0..6248625 100644
--- a/configure.ac
+++ b/configure.ac
@@ -32,7 +32,11 @@ dnl Used by test suite.
 AC_PROG_SED
 AC_PROG_EGREP
 
-AC_CHECK_HEADERS([fcntl.h])
+if test "x$GCC" = xyes; then
+    CFLAGS="-Wall -Wextra -Wconversion $CFLAGS"
+fi
+
+AC_CHECK_HEADERS([fcntl.h error.h])
 
 AC_TYPE_PID_T
 AC_TYPE_SIZE_T
@@ -51,5 +55,8 @@ AC_ARG_ENABLE([debug],
                    AC_DEFINE([DEBUG], 1, [Define to enable debug output.])
                fi])
 
+dnl Used in tests/Makefile.am to build the test only if error() is available.
+AM_CONDITIONAL([HAVE_ERROR_H],[test "x$ac_cv_header_error_h" = xyes])
+
 AC_CONFIG_FILES([Makefile src/Makefile tests/Makefile])
 AC_OUTPUT