linux-kernel - [PATCH 2/2] kconfig: optionally use pkg-config to detect ncurses libs

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Message-Id: <1362574922-4799-3-git-send-email-jlec@gentoo.org>
Date:	Wed,  6 Mar 2013 14:02:02 +0100
From:	jlec@...too.org
To:	linux-kbuild@...r.kernel.org, linux-kernel@...r.kernel.org
Cc:	Justin Lecher <jlec@...too.org>
Subject: [PATCH 2/2] kconfig: optionally use pkg-config to detect ncurses libs

From: Justin Lecher <jlec@...too.org>

When building ncurses with --with-termlib several symbols get moved from
libncurses.so to libtinfo.so. Thus when linking with libncurses.so, one
additionally needs to link with libtinfo.so.

The ncurses pkg-config module will be used to detect the necessary libs for
linking. If not available the old way of directly specifying libs will be
used.

Signed-off-by: Justin Lecher <jlec@...too.org>
---
 scripts/kconfig/Makefile | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/scripts/kconfig/Makefile b/scripts/kconfig/Makefile
index 231b475..e76ae5d 100644
--- a/scripts/kconfig/Makefile
+++ b/scripts/kconfig/Makefile
@@ -219,7 +219,9 @@ HOSTCFLAGS_gconf.o	= `pkg-config --cflags gtk+-2.0 gmodule-2.0 libglade-2.0` \
 
 HOSTLOADLIBES_mconf   = $(shell $(CONFIG_SHELL) $(check-lxdialog) -ldflags $(HOSTCC))
 
-HOSTLOADLIBES_nconf	= -lmenu -lpanel -lncurses
+HOSTLOADLIBES_nconf	= $(shell \
+				pkg-config --libs menu panel ncurses 2>/dev/null \
+				|| echo "-lmenu -lpanel -ncurses"  )
 $(obj)/qconf.o: $(obj)/.tmp_qtcheck
 
 ifeq ($(qconf-target),1)
-- 
1.8.1.5

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