[klibc] [klibc:master] [SHELL] Fix klibc DEBUG compilation

[klibc-bot for maximilian attems]

Commit-ID:  cebb8fc25475486605d12e25a3040ccacceede74
Gitweb:     http://git.kernel.org/?p=libs/klibc/klibc.git;a=commit;h=cebb8fc25475486605d12e25a3040ccacceede74
Author:     maximilian attems <max at stro.at>
AuthorDate: Fri, 15 Jul 2011 11:18:13 +0800
Committer:  maximilian attems <max at stro.at>
CommitDate: Mon, 2 Jul 2012 10:45:52 +0200

[klibc] [SHELL] Fix klibc DEBUG compilation

dash didn't compile in DEBUG mode against klibc for all long time.
Now it only fails at link stage for not having setlinebuf(3) and
freopen(3).

Fixes:

usr/dash/show.o: In function `opentrace':
show.c:(.text+0x36): undefined reference to `freopen'
show.c:(.text+0x86): undefined reference to `setlinebuf'

Skip setlinebuf and use fclose/fopen inside __KLIBC__
Compile tested with debug in klibc and against glibc in dash repo.

Signed-off-by: maximilian attems <max at stro.at>
Signed-off-by: Herbert Xu <herbert at gondor.apana.org.au>
Signed-off-by: maximilian attems <max at stro.at>

---
 usr/dash/show.c |    6 ++++++
 1 files changed, 6 insertions(+), 0 deletions(-)

diff --git a/usr/dash/show.c b/usr/dash/show.c
index 14dbef3..4a049e9 100644
--- a/usr/dash/show.c
+++ b/usr/dash/show.c
@@ -378,7 +378,11 @@ opentrace(void)
 	scopy("./trace", s);
 #endif /* not_this_way */
 	if (tracefile) {
+#ifndef __KLIBC__
 		if (!freopen(s, "a", tracefile)) {
+#else
+		if (!(!fclose(tracefile) && (tracefile = fopen(s, "a")))) {
+#endif /* __KLIBC__ */
 			fprintf(stderr, "Can't re-open %s\n", s);
 			debug = 0;
 			return;
@@ -394,7 +398,9 @@ opentrace(void)
 	if ((flags = fcntl(fileno(tracefile), F_GETFL, 0)) >= 0)
 		fcntl(fileno(tracefile), F_SETFL, flags | O_APPEND);
 #endif
+#ifndef __KLIBC__
 	setlinebuf(tracefile);
+#endif /* __KLIBC__ */
 	fputs("\nTracing started.\n", tracefile);
 }
 #endif /* DEBUG */