From 6ef33e86557c59b31c9b731c0360ec1d404cc801 Mon Sep 17 00:00:00 2001
From: Khem Raj <raj.khem@gmail.com>
Date: Fri, 29 May 2015 20:56:00 -0700
Subject: [PATCH] make error() portable

error() is not posix but gnu extension so may not be available on all
kind of systemsi e.g. musl.

Signed-off-by: Khem Raj <raj.khem@gmail.com>
Upstream-Status: Submitted

---
 configure.ac              |  2 ++
 libweston/weston-error.h  | 20 ++++++++++++++++++++
 libweston/weston-launch.c |  2 +-
 3 files changed, 23 insertions(+), 1 deletion(-)
 create mode 100644 libweston/weston-error.h

diff --git a/configure.ac b/configure.ac
index 9d98e84..8f6b80d 100644
--- a/configure.ac
+++ b/configure.ac
@@ -109,6 +109,8 @@ AC_CHECK_DECL(CLOCK_MONOTONIC,[],
 	      [[#include <time.h>]])
 AC_CHECK_HEADERS([execinfo.h])
 
+AC_CHECK_HEADERS([error.h])
+
 AC_CHECK_FUNCS([mkostemp strchrnul initgroups posix_fallocate])
 
 # check for libdrm as a build-time dependency only
diff --git a/libweston/weston-error.h b/libweston/weston-error.h
new file mode 100644
index 0000000..2089d02
--- /dev/null
+++ b/libweston/weston-error.h
@@ -0,0 +1,20 @@
+#ifndef _WESTON_ERROR_H
+#define _WESTON_ERROR_H
+
+#if defined(HAVE_ERROR_H)
+#include <error.h>
+#else
+#include <err.h>
+#include <string.h>
+#define _weston_error(S, E, F, ...) do { \
+	if (E) \
+		err(S, F ": %s", ##__VA_ARGS__, strerror(E)); \
+	else \
+		err(S, F, ##__VA_ARGS__); \
+} while(0)
+
+#define error _weston_error
+#endif
+
+#endif
+
diff --git a/libweston/weston-launch.c b/libweston/weston-launch.c
index bf73e0d..9064439 100644
--- a/libweston/weston-launch.c
+++ b/libweston/weston-launch.c
@@ -33,7 +33,6 @@
 #include <poll.h>
 #include <errno.h>
 
-#include <error.h>
 #include <getopt.h>
 
 #include <sys/types.h>
@@ -59,6 +58,7 @@
 #endif
 
 #include "weston-launch.h"
+#include "weston-error.h"
 
 #define DRM_MAJOR 226