config.h: define _GNU_SOURCE

[ccan] / tools / configurator / configurator.c

diff --git a/tools/configurator/configurator.c b/tools/configurator/configurator.c
index b150dadb56d99f9e21bb4702b1f9af0e3e943bb6..4972e9e198bb56a4ed5bc910722a9d9b8625ce7c 100644 (file)
--- 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++)