linux-kernel - [PATCH] menuconfig,mconf-cfg: Allow specification of ncurses location

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Date:   Fri, 27 Nov 2020 16:45:05 -0800
From:   Scott Branden <scott.branden@...adcom.com>
To:     Masahiro Yamada <masahiroy@...nel.org>
Cc:     linux-kbuild@...r.kernel.org, linux-kernel@...r.kernel.org,
        bcm-kernel-feedback-list@...adcom.com, bruce.ashfield@...il.com,
        Bruce Ashfield <bruce.ashfield@...driver.com>,
        Jason Wessel <jason.wessel@...driver.com>,
        Michal Marek <mmarek@...e.cz>,
        Scott Branden <scott.branden@...adcom.com>
Subject: [PATCH] menuconfig,mconf-cfg: Allow specification of ncurses location

From: Bruce Ashfield <bruce.ashfield@...driver.com>

In some cross build environments such as the Yocto Project build
environment it provides an ncurses library that is compiled
differently than the host's version.  This causes display corruption
problems when the host's curses includes are used instead of the
includes from the provided compiler are overridden.  There is a second
case where there is no curses libraries at all on the host system and
menuconfig will just fail entirely.

The solution is simply to allow an override variable in
check-lxdialog.sh for environments such as the Yocto Project.  Adding
a CROSS_CURSES_LIB and CROSS_CURSES_INC solves the issue and allowing
compiling and linking against the right headers and libraries.

Signed-off-by: Jason Wessel <jason.wessel@...driver.com>
cc: Michal Marek <mmarek@...e.cz>
cc: linux-kbuild@...r.kernel.org
Signed-off-by: Bruce Ashfield <bruce.ashfield@...driver.com>
Signed-off-by: Scott Branden <scott.branden@...adcom.com>
---
 scripts/kconfig/mconf-cfg.sh | 8 ++++++++
 1 file changed, 8 insertions(+)
 mode change 100755 => 100644 scripts/kconfig/mconf-cfg.sh

diff --git a/scripts/kconfig/mconf-cfg.sh b/scripts/kconfig/mconf-cfg.sh
old mode 100755
new mode 100644
index aa68ec95620d..32448bc198a5
--- a/scripts/kconfig/mconf-cfg.sh
+++ b/scripts/kconfig/mconf-cfg.sh
@@ -4,6 +4,14 @@
 PKG="ncursesw"
 PKG2="ncurses"

+if [ "$CROSS_CURSES_LIB" != "" ]; then
+    echo libs=\'$CROSS_CURSES_LIB\'
+    if [ x"$CROSS_CURSES_INC" != x ]; then
+	echo cflags=\'$CROSS_CURSES_INC\'
+    fi
+    exit 0
+fi
+
 if [ -n "$(command -v pkg-config)" ]; then
 	if pkg-config --exists $PKG; then
 		echo cflags=\"$(pkg-config --cflags $PKG)\"
-- 
2.17.1