config: support make defconfig O=/f/o/o

previously wanted to create the temporary cfg file in the srcdir (which
failed on a RO srcdir)

Signed-off-by: Bernhard Reutner-Fischer <rep.dot.nop@gmail.com>

diff --git a/extra/config/confdata.c b/extra/config/confdata.c
index 281dd00..2b848d5 100644 (file)
--- a/extra/config/confdata.c
+++ b/extra/config/confdata.c
@@ -402,6 +402,8 @@ int conf_write(const char *name)
        char *env;
 
        dirname[0] = 0;
+       if (name == NULL)
+               name = conf_get_configname();
        if (name && name[0]) {
                struct stat st;
                char *slash;