linux-kernel - [PATCH 3/3] kconfig: get CONFIG

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Message-Id: <1350687985-21053-4-git-send-email-yann.morin.1998@free.fr>
Date:	Sat, 20 Oct 2012 01:06:25 +0200
From:	"Yann E. MORIN" <yann.morin.1998@...e.fr>
To:	linux-kbuild@...r.kernel.org
Cc:	Michal Marek <mmarek@...e.cz>, linux-kernel@...r.kernel.org,
	"Yann E. MORIN" <yann.morin.1998@...e.fr>
Subject: [PATCH 3/3] kconfig: get CONFIG_ prefix from the environment

Currently, the CONFIG_ prefix is hard-coded in the kconfig frontends
executables. This means that two projects that use kconfig with
different prefixes can not share the same kconfig frontends.

Instead of hard-coding the prefix in the frontends, get it from the
environment, and revert back to hard-coded value if not found.

Signed-off-by: "Yann E. MORIN" <yann.morin.1998@...e.fr>
---
 scripts/kconfig/gconf.c |    2 +-
 scripts/kconfig/lkc.h   |    2 +-
 scripts/kconfig/nconf.c |    1 +
 3 files changed, 3 insertions(+), 2 deletions(-)

diff --git a/scripts/kconfig/gconf.c b/scripts/kconfig/gconf.c
index adc2306..f2bee70 100644
--- a/scripts/kconfig/gconf.c
+++ b/scripts/kconfig/gconf.c
@@ -10,6 +10,7 @@
 #  include <config.h>
 #endif
 
+#include <stdlib.h>
 #include "lkc.h"
 #include "images.c"
 
@@ -22,7 +23,6 @@
 #include <string.h>
 #include <unistd.h>
 #include <time.h>
-#include <stdlib.h>
 
 //#define DEBUG
 
diff --git a/scripts/kconfig/lkc.h b/scripts/kconfig/lkc.h
index 7aa9db0..7577a7f 100644
--- a/scripts/kconfig/lkc.h
+++ b/scripts/kconfig/lkc.h
@@ -41,7 +41,7 @@ extern "C" {
 #endif
 static inline const char *CONFIG_prefix(void)
 {
-	return CONFIG_;
+	return getenv( "CONFIG_" ) ?: CONFIG_;
 }
 #undef CONFIG_
 #define CONFIG_ CONFIG_prefix()
diff --git a/scripts/kconfig/nconf.c b/scripts/kconfig/nconf.c
index 261f926..ce93e87 100644
--- a/scripts/kconfig/nconf.c
+++ b/scripts/kconfig/nconf.c
@@ -7,6 +7,7 @@
  */
 #define _GNU_SOURCE
 #include <string.h>
+#include <stdlib.h>
 
 #include "lkc.h"
 #include "nconf.h"
-- 
1.7.2.5

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