X-Git-Url: https://git.tokkee.org/?p=sysdb.git;a=blobdiff_plain;f=configure.ac;h=420021f628ab81d61a4e898fe1acdc6c3d173f2a;hp=5cae366f0e47b6d16ee649b491ae17d34a8e7d2c;hb=982bbbce08caed783b941ad8141596caf01079c6;hpb=c3cfa4bb8d3c986b4c6744d73defa8eba08fcb72

diff --git a/configure.ac b/configure.ac
index 5cae366..420021f 100644
--- a/configure.ac
+++ b/configure.ac
@@ -79,6 +79,8 @@ test_cc_flags() {
 	return $ret
 }
 
+STRICT_CFLAGS=""
+
 m4_divert_once([HELP_ENABLE], [
 Build options:])
 
@@ -94,18 +96,23 @@ if test "x$enable_standards" = "xyes"; then
 			[Define to enforce ISO/IEC 9899:1999 (C99) compliance.])
 	AC_DEFINE([_POSIX_C_SOURCE], 200112L,
 			[Define to enforce IEEE 1003.1-2001 (POSIX:2001) compliance.])
-	AC_DEFINE([_XOPEN_SOURCE], 600,
-			[Define to enforce X/Open 6 (XSI) compliance.])
+	AC_DEFINE([_XOPEN_SOURCE], 700,
+			[Define to enforce X/Open 7 (XSI) compliance.])
 	AC_DEFINE([_REENTRANT], 1,
 			[Define to enable reentrant interfaces.])
 	AC_DEFINE([_THREAD_SAFE], 1,
 			[Define to enable reentrant interfaces.])
 
-	for flag in -std=c99 -pedantic; do
+	dnl GNU libc defines strcasecmp() only when using _BSD_SOURCE even though
+	dnl the function is conforming to POSIX.1-2001 as well. Let's weaken
+	dnl strict standards compliance a bit to work around this.
+	AC_DEFINE([_BSD_SOURCE], 1, [Define to enable 4.3BSD support.])
+
+	for flag in -std=c99; do
 		AC_MSG_CHECKING([whether $CC accepts $flag])
 
 		if test_cc_flags $flag; then
-			CFLAGS="$CFLAGS $flag"
+			STRICT_CFLAGS="$STRICT_CFLAGS $flag"
 			AC_MSG_RESULT([yes])
 		else
 			AC_MSG_RESULT([no])
@@ -130,7 +137,7 @@ if test "x$enable_hardening" = "xyes"; then
 		AC_MSG_CHECKING([whether $CC accepts $flag])
 
 		if test_cc_flags $flag; then
-			CFLAGS="$CFLAGS $flag"
+			STRICT_CFLAGS="$STRICT_CFLAGS $flag"
 			hardening=$(($hardening + 1))
 			AC_MSG_RESULT([yes])
 		else
@@ -150,7 +157,6 @@ AC_ARG_ENABLE([strict-checks],
 		[enable_strict_checks="$enableval"],
 		[enable_strict_checks="yes"])
 
-STRICT_CFLAGS=""
 for flag in -Wall -Werror; do
 	AC_MSG_CHECKING([whether $CC accepts $flag])
 
@@ -163,11 +169,13 @@ for flag in -Wall -Werror; do
 done
 
 if test "x$enable_strict_checks" = "xyes"; then
+	dnl -Wsign-conversion may cause problems in expanded macros from libc
 	for flag in -Wextra \
 			-Wbad-function-cast \
 			-Wcast-align \
 			-Wcast-qual \
 			-Wconversion \
+			-Wno-sign-conversion \
 			-Wdeclaration-after-statement \
 			-Wmissing-prototypes \
 			-Wpointer-arith \