From: Jason Wessel Date: Sun, 3 Mar 2013 12:31:40 -0600 Subject: [PATCH] menuconfig,check-lxdiaglog.sh: Allow specification of ncurses location Upstream-Status: Submitted [ based on: https://lkml.org/lkml/2013/3/3/103 ] This patch syncs up with the way the menuconfig ncurses / curses is detected and the HOST_EXTRACFLAGS works in the Linux kernel and it allows the menuconfig to work with a sysroot version of the curses libraries. --- 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 cc: Michal Marek cc: linux-kbuild@vger.kernel.org --- scripts/kconfig/lxdialog/Makefile | 2 +- scripts/kconfig/lxdialog/check-lxdialog.sh | 8 ++++++++ 2 files changed, 9 insertions(+), 1 deletion(-) --- a/scripts/kconfig/lxdialog/check-lxdialog.sh +++ b/scripts/kconfig/lxdialog/check-lxdialog.sh @@ -4,6 +4,10 @@ # What library to link ldflags() { + if [ x"$CROSS_CURSES_LIB" != x ]; then + echo "$CROSS_CURSES_LIB" + exit + fi for ext in so a dylib ; do for lib in ncursesw ncurses curses ; do $cc -print-file-name=lib${lib}.${ext} | grep -q / @@ -19,6 +23,10 @@ ldflags() # Where is ncurses.h? ccflags() { + if [ x"$CROSS_CURSES_INC" != x ]; then + echo "$CROSS_CURSES_INC" + exit + fi if [ -f /usr/include/ncursesw/ncurses.h ]; then echo '-I/usr/include/ncursesw -DCURSES_LOC=""' elif [ -f /usr/include/ncursesw/curses.h ]; then --- a/scripts/kconfig/lxdialog/Makefile +++ b/scripts/kconfig/lxdialog/Makefile @@ -5,7 +5,7 @@ check-lxdialog := $(srctree)/$(src)/che # Use reursively expanded variables so we do not call gcc unless # we really need to do so. (Do not call gcc as part of make mrproper) -HOST_EXTRACFLAGS = $(shell $(CONFIG_SHELL) $(check-lxdialog) -ccflags) +HOST_EXTRACFLAGS += $(shell $(CONFIG_SHELL) $(check-lxdialog) -ccflags) HOST_LOADLIBES = $(shell $(CONFIG_SHELL) $(check-lxdialog) -ldflags $(HOSTCC)) HOST_EXTRACFLAGS += -DLOCALE