tools: don't unnecessarily redefine _GNU_SOURCE in config.h

[ccan] / tools / configurator / configurator.c

diff --git a/tools/configurator/configurator.c b/tools/configurator/configurator.c
index 7b9652be90ef096045ce1545f84b9c1afa5b05ec..7b3403a9d96d50ca43b25abcc0143808f95e1cab 100644 (file)
--- a/tools/configurator/configurator.c
+++ b/tools/configurator/configurator.c
@@ -116,6 +116,7 @@ static struct test tests[] = {
          "#include <unistd.h>\n"
          "static int func(void) { return getpagesize(); }" },
        { "HAVE_ISBLANK", DEFINES_FUNC, NULL,
+         "#define _GNU_SOURCE\n"
          "#include <ctype.h>\n"
          "static int func(void) { return isblank(' '); }" },
        { "HAVE_LITTLE_ENDIAN", INSIDE_MAIN|EXECUTE, NULL,
@@ -393,7 +394,9 @@ int main(int argc, const char *argv[])
        printf("/* Generated by CCAN configurator */\n"
               "#ifndef CCAN_CONFIG_H\n"
               "#define CCAN_CONFIG_H\n");
+       printf("#ifndef _GNU_SOURCE\n");
        printf("#define _GNU_SOURCE /* Always use GNU extensions. */\n");
+       printf("#endif\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++)