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Subject[PATCH 01/11] kconfig: factor out ncurses check in a shell script
Date
From

Cleaning up the lxdialog Makefile by factoring out the
ncurses compatibility checks.
This made the checks much more obvious and easier to extend.

Signed-off-by: Sam Ravnborg <sam@ravnborg.org>

---
scripts/kconfig/lxdialog/Makefile | 48 +++++---------------
scripts/kconfig/lxdialog/check-lxdialog.sh | 67 ++++++++++++++++++++++++++++
2 files changed, 79 insertions(+), 36 deletions(-)
create mode 100644 scripts/kconfig/lxdialog/check-lxdialog.sh
ae215b14bdbd459afe5f371175765fae817062a8
diff --git a/scripts/kconfig/lxdialog/Makefile b/scripts/kconfig/lxdialog/Makefile
index a45a13f..8f41d9a 100644
--- a/scripts/kconfig/lxdialog/Makefile
+++ b/scripts/kconfig/lxdialog/Makefile
@@ -1,42 +1,18 @@
-HOST_EXTRACFLAGS := -DLOCALE
-ifeq ($(shell uname),SunOS)
-HOST_LOADLIBES := -lcurses
-else
-HOST_LOADLIBES := -lncurses
-endif
+# Makefile to build lxdialog package
+#

-ifeq (/usr/include/ncurses/ncurses.h, $(wildcard /usr/include/ncurses/ncurses.h))
- HOST_EXTRACFLAGS += -I/usr/include/ncurses -DCURSES_LOC="<ncurses.h>"
-else
-ifeq (/usr/include/ncurses/curses.h, $(wildcard /usr/include/ncurses/curses.h))
- HOST_EXTRACFLAGS += -I/usr/include/ncurses -DCURSES_LOC="<ncurses/curses.h>"
-else
-ifeq (/usr/include/ncurses.h, $(wildcard /usr/include/ncurses.h))
- HOST_EXTRACFLAGS += -DCURSES_LOC="<ncurses.h>"
-else
- HOST_EXTRACFLAGS += -DCURSES_LOC="<curses.h>"
-endif
-endif
-endif
+check-lxdialog := $(srctree)/$(src)/check-lxdialog.sh
+HOST_EXTRACFLAGS := $(shell $(CONFIG_SHELL) $(check-lxdialog) -ccflags)
+HOST_LOADLIBES := $(shell $(CONFIG_SHELL) $(check-lxdialog) -ldflags)
+
+HOST_EXTRACFLAGS += -DLOCALE
+
+.PHONY: dochecklxdialog
+$(obj)/dochecklxdialog:
+ $(Q)$(CONFIG_SHELL) $(check-lxdialog) -check $(HOSTCC) $(HOST_LOADLIBES)

hostprogs-y := lxdialog
-always := ncurses $(hostprogs-y)
+always := $(hostprogs-y) dochecklxdialog

lxdialog-objs := checklist.o menubox.o textbox.o yesno.o inputbox.o \
util.o lxdialog.o msgbox.o
-
-.PHONY: $(obj)/ncurses
-$(obj)/ncurses:
- @echo "main() {}" > lxtemp.c
- @if $(HOSTCC) lxtemp.c $(HOST_LOADLIBES); then \
- rm -f lxtemp.c a.out; \
- else \
- rm -f lxtemp.c; \
- echo -e "\007" ;\
- echo ">> Unable to find the Ncurses libraries." ;\
- echo ">>" ;\
- echo ">> You must install ncurses-devel in order" ;\
- echo ">> to use 'make menuconfig'" ;\
- echo ;\
- exit 1 ;\
- fi
diff --git a/scripts/kconfig/lxdialog/check-lxdialog.sh b/scripts/kconfig/lxdialog/check-lxdialog.sh
new file mode 100644
index 0000000..a3c141b
--- /dev/null
+++ b/scripts/kconfig/lxdialog/check-lxdialog.sh
@@ -0,0 +1,67 @@
+#!/bin/sh
+# Check ncurses compatibility
+
+# What library to link
+ldflags()
+{
+ if [ `uname` == SunOS ]; then
+ echo '-lcurses'
+ else
+ echo '-lncurses'
+ fi
+}
+
+# Where is ncurses.h?
+ccflags()
+{
+ if [ -f /usr/include/ncurses/ncurses.h ]; then
+ echo '-I/usr/include/ncurses -DCURSES_LOC="<ncurses.h>"'
+ elif [ -f /usr/include/ncurses/curses.h ]; then
+ echo '-I/usr/include/ncurses -DCURSES_LOC="<ncurses/curses.h>"'
+ elif [ -f /usr/include/ncurses.h ]; then
+ echo '-DCURSES_LOC="<ncurses.h>"'
+ else
+ echo '-DCURSES_LOC="<curses.h>"'
+ fi
+}
+
+compiler=""
+# Check if we can link to ncurses
+check() {
+ echo "main() {}" | $compiler -xc -
+ if [ $? != 0 ]; then
+ echo " *** Unable to find the ncurses libraries." 1>&2
+ echo " *** make menuconfig require the ncurses libraries" 1>&2
+ echo " *** " 1>&2
+ echo " *** Install ncurses (ncurses-devel) and try again" 1>&2
+ echo " *** " 1>&2
+ exit 1
+ fi
+}
+
+usage() {
+ printf "Usage: $0 [-check compiler options|-header|-library]\n"
+}
+
+if [ $# == 0 ]; then
+ usage
+ exit 1
+fi
+
+case "$1" in
+ "-check")
+ shift
+ compiler="$@"
+ check
+ ;;
+ "-ccflags")
+ ccflags
+ ;;
+ "-ldflags")
+ ldflags
+ ;;
+ "*")
+ usage
+ exit 1
+ ;;
+esac
--
1.0.GIT
-
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