From: Rusty Russell <rusty@rustcorp.com.au>
Date: Tue, 1 Mar 2011 12:49:20 +0000 (+1030)
Subject: config.h: define _GNU_SOURCE
X-Git-Url: https://git.ozlabs.org/?a=commitdiff_plain;h=590d63376591791869b58743d3eca9c452d705e6;hp=b55c668069884a1dd0078fb7598c7371ce6c98a9;p=ccan

config.h: define _GNU_SOURCE

Otherwise we don't get goodies like asprintf, and 64-bit offsets.  Should
be a harmless-define on non-glibc systems.
---

diff --git a/config.h b/config.h
index c540af30..9d354869 100644
--- a/config.h
+++ b/config.h
@@ -1,6 +1,7 @@
+/* Generated by CCAN configurator */
 #ifndef CCAN_CONFIG_H
 #define CCAN_CONFIG_H
-/* Generated by CCAN configurator */
+#define _GNU_SOURCE /* Always use GNU extensions. */
 #define CCAN_COMPILER "cc"
 #define CCAN_CFLAGS "-g -Wall -Wstrict-prototypes -Wold-style-definition -Wmissing-prototypes -Wmissing-declarations"
 
diff --git a/tools/configurator/configurator.c b/tools/configurator/configurator.c
index b150dadb..4972e9e1 100644
--- a/tools/configurator/configurator.c
+++ b/tools/configurator/configurator.c
@@ -337,9 +337,10 @@ int main(int argc, char *argv[])
 	unlink(INPUT_FILE);
 
 	cmd[strlen(cmd) - strlen(" -o " OUTPUT_FILE " " INPUT_FILE)] = '\0';
-	printf("#ifndef CCAN_CONFIG_H\n"
-	       "#define CCAN_CONFIG_H\n"
-	       "/* Generated by CCAN configurator */\n");
+	printf("/* Generated by CCAN configurator */\n"
+	       "#ifndef CCAN_CONFIG_H\n"
+	       "#define CCAN_CONFIG_H\n");
+	printf("#define _GNU_SOURCE /* Always use GNU extensions. */\n");
 	printf("#define CCAN_COMPILER \"%s\"\n", argv[1]);
 	printf("#define CCAN_CFLAGS \"%s\"\n\n", cmd + strlen(argv[1]) + 1);
 	for (i = 0; i < sizeof(tests)/sizeof(tests[0]); i++)