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authorStef Walter <stef@thewalter.net>2013-07-23 23:25:48 +0200
committerStef Walter <stef@thewalter.net>2013-07-24 16:06:04 +0200
commit89ac8487fbc94405b59cc9dde838df783124b07e (patch)
treecf0daea87ae6e3a64eb599e361846de2535752bc
parent027c5cc1a0fd71675f4cf7d3e6b681a2a9454425 (diff)
downloadp11-kit-89ac8487fbc94405b59cc9dde838df783124b07e.tar.gz
Don't use _GNU_SOURCE
glibc declares functions completely different if in POSIX or GNU mode. Nastiness. Stop using _GNU_SOURCE all together.
-rw-r--r--common/compat.h10
-rw-r--r--common/message.c6
-rw-r--r--configure.ac7
3 files changed, 17 insertions, 6 deletions
diff --git a/common/compat.h b/common/compat.h
index a78da1f..fae1b7d 100644
--- a/common/compat.h
+++ b/common/compat.h
@@ -39,6 +39,10 @@
#include <sys/types.h>
+#ifdef _GNU_SOURCE
+#error Make the crap stop. _GNU_SOURCE is completely unportable and breaks all sorts of behavior
+#endif
+
#if !defined(__cplusplus) && (__GNUC__ > 2)
#define GNUC_PRINTF(x, y) __attribute__((__format__(__printf__, x, y)))
#else
@@ -263,7 +267,7 @@ char * strconcat (const char *first,
#endif /* HAVE_STRCONCAT */
-#ifndef HAVE_ASPRINTF
+#if defined HAVE_DECL_ASPRINTF && !HAVE_DECL_ASPRINTF
int asprintf (char **strp,
const char *fmt,
@@ -271,14 +275,14 @@ int asprintf (char **strp,
#endif /* HAVE_ASPRINTF */
-#ifndef HAVE_VASPRINTF
+#if defined HAVE_DECL_VASPRINTF && !HAVE_DECL_VASPRINTF
#include <stdarg.h>
int vasprintf (char **strp,
const char *fmt,
va_list ap);
-#endif /* HAVE_VASPRINTF */
+#endif /* HAVE_DECL_VASPRINTF */
#ifndef HAVE_GMTIME_R
#include <time.h>
diff --git a/common/message.c b/common/message.c
index 8b54ad1..4358e46 100644
--- a/common/message.c
+++ b/common/message.c
@@ -37,6 +37,12 @@
#include "config.h"
+/*
+ * Oh god. glibc is nasty. Changes behavior and definitions of POSIX
+ * functions to completely different signatures depending on defines
+ */
+#define _POSIX_C_SOURCE 200112L
+
#include "compat.h"
#define P11_DEBUG_FLAG P11_DEBUG_LIB
#include "debug.h"
diff --git a/configure.ac b/configure.ac
index d764944..1b7cdac 100644
--- a/configure.ac
+++ b/configure.ac
@@ -6,8 +6,6 @@ AC_INIT([p11-kit],
[p11-kit],
[http://p11-glue.freedesktop.org/p11-kit.html])
-AC_USE_SYSTEM_EXTENSIONS
-
# ------------------------------------------------------------------------------
# p11-kit libtool versioning
# CURRENT : REVISION : AGE
@@ -83,6 +81,8 @@ if test "$os_unix" = "yes"; then
AC_CHECK_FUNCS([asprintf vasprintf vsnprintf])
AC_CHECK_FUNCS([timegm])
+ AC_CHECK_DECLS([asprintf, vasprintf], [], [], [[#include <stdio.h>]])
+
# Required functions
AC_CHECK_FUNCS([gmtime_r],
[AC_DEFINE([HAVE_GMTIME_R], 1, [Whether gmtime_r() is available])],
@@ -91,7 +91,8 @@ if test "$os_unix" = "yes"; then
# Check if these are declared and/or available to link against
AC_CHECK_DECLS([program_invocation_short_name])
AC_MSG_CHECKING([whether program_invocation_short_name is available])
- AC_LINK_IFELSE([AC_LANG_PROGRAM([[#include <argp.h>]],
+ AC_LINK_IFELSE([AC_LANG_PROGRAM([[#define _GNU_SOURCE
+ #include <errno.h>]],
[[program_invocation_short_name = "test";]])],
[AC_DEFINE([HAVE_PROGRAM_INVOCATION_SHORT_NAME], [1],
[Whether program_invocation_short_name available])