[PATCH] kconfig: display an error message when aborting

[Mike Frysinger <vapier@gentoo.org>]

If the Kconfig option causes an open() failure (like one that starts with
an underscore), there should be an error message shown since we're going
to be exiting with an error code.  Otherwise, the reason for the failure
can really only be diagnosed with strace or something similar.

Signed-off-by: Mike Frysinger <vapier@gentoo.org>
---
 scripts/kconfig/confdata.c |    2 ++
 1 files changed, 2 insertions(+), 0 deletions(-)

diff --git a/scripts/kconfig/confdata.c b/scripts/kconfig/confdata.c
index b55e72f..e2644b4 100644
--- a/scripts/kconfig/confdata.c
+++ b/scripts/kconfig/confdata.c
@@ -640,6 +640,8 @@ static int conf_split_config(void)
 		fd = open(path, O_WRONLY | O_CREAT | O_TRUNC, 0644);
 		if (fd == -1) {
 			if (errno != ENOENT) {
+				conf_warning("sym '%s' with path '%s': %s",
+					     sym->name, path, strerror(errno));
 				res = 1;
 				break;
 			}
-- 
1.6.5.3