generator: don't even try to compile if !HAVE_UCONTEXT.

Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>

diff --git a/ccan/generator/_info b/ccan/generator/_info
index b0b7343f8196671042e4f394efd37cf8b79a6f3c..11753a5b8506b848de4238e24c9364db92e62308 100644 (file)
--- a/ccan/generator/_info
+++ b/ccan/generator/_info
@@ -63,6 +63,14 @@ int main(int argc, char *argv[])
                return 0;
        }
 
+       if (strcmp(argv[1], "ported") == 0) {
+#if HAVE_UCONTEXT
+               printf("\n");
+#else
+               printf("Needs ucontext support\n");
+#endif
+       }
+
        if (strcmp(argv[1], "testdepends") == 0) {
                printf("ccan/str\n");
                return 0;