configurator: test for HAVE_FCHDIR

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

diff --git a/tools/configurator/configurator.c b/tools/configurator/configurator.c
index eb4728462eab451a9785836b0cc7cb99b79de318..143069074ff4c74d222c8a48df061daf9b5d0794 100644 (file)
--- a/tools/configurator/configurator.c
+++ b/tools/configurator/configurator.c
@@ -146,6 +146,15 @@ static struct test tests[] = {
        { "HAVE_COMPOUND_LITERALS", INSIDE_MAIN, NULL, NULL,
          "int *foo = (int[]) { 1, 2, 3, 4 };\n"
          "return foo[0] ? 0 : 1;" },
+       { "HAVE_FCHDIR", DEFINES_EVERYTHING|EXECUTE, NULL, NULL,
+         "#include <sys/types.h>\n"
+         "#include <sys/stat.h>\n"
+         "#include <fcntl.h>\n"
+         "#include <unistd.h>\n"
+         "int main(void) {\n"
+         "     int fd = open(\"..\", O_RDONLY);\n"
+         "     return fchdir(fd) == 0 ? 0 : 1;\n"
+         "}\n" },
        { "HAVE_ERR_H", DEFINES_FUNC, NULL, NULL,
          "#include <err.h>\n"
          "static void func(int arg) {\n"