#!/usr/bin/make -f
# $MirOS: contrib/hosted/tg/deb/mksh/debian/rules,v 1.56 2010/07/17 23:08:59 tg Exp $
#-
# -*- makefile -*-
# Sample debian/rules that uses debhelper.
# This file was originally written by Joey Hess and Craig Small.
# As a special exception, when this file is copied by dh-make into a
# dh-make output file, you may use that output file without restriction.
# This special exception was added by Craig Small in version 0.37 of dh-make.

PRINTF_C=		extra/printf.c.1.15


LC_ALL:=		C
export LC_ALL

CC?=			gcc
CFLAGS=			-Wall -g

ifneq (,$(filter noopt,$(DEB_BUILD_OPTIONS)))
CFLAGS+=		-O0
else
CFLAGS+=		-O2
endif

# nostrip: we use dh_strip, no action needed
# parallel=n: we cannot guarantee to honour ‘n’, thus building sequentially


# CPPFLAGS for /bin/mksh (glibc; full)
CPPFLAGS_f+=		-include /usr/include/bsd/bsd.h

# CPPFLAGS for /bin/mksh-static (dietlibc or glibc; small)
CPPFLAGS_s+=		-DMKSH_SMALL

# Debian #499139
CPPFLAGS_f+=		-DMKSH_BINSHREDUCED
CPPFLAGS_s+=		-DMKSH_BINSHREDUCED


BUILD_ENV:=		CC='${CC}'
BUILD_ENV+=		CFLAGS='${CFLAGS}'
BUILD_ENV+=		CPPFLAGS='${CPPFLAGS} ${CPPFLAGS_f}'
BUILD_ENV+=		LIBS='-lbsd'


ifeq ($(shell which diet),)
USE_DIETLIBC=		0
else
USE_DIETLIBC=		1
endif

DEB_BUILD_ARCH?=	$(shell dpkg-architecture -qDEB_BUILD_ARCH)

# Debian #523088
ifeq (${DEB_BUILD_ARCH},s390)
USE_DIETLIBC=		0
endif

ifneq (,$(filter Ubuntu,$(shell dpkg-vendor --query vendor 2>/dev/null || echo unknown)))
# LP #381332
ifeq (${DEB_BUILD_ARCH},powerpc)
USE_DIETLIBC=		0
endif
ifeq (${DEB_BUILD_ARCH},ppc64)
USE_DIETLIBC=		0
endif
endif

# both Ubuntu (weird versions) and Debian (weird trouble)
ifeq (${DEB_BUILD_ARCH},sparc)
USE_DIETLIBC=		0
endif


ifeq (${USE_DIETLIBC},1)
# mksh-static ← dietlibc – diet(1) optimises OK
STATIC_ENV:=		CC='diet -v -Os ${CC}'
STATIC_ENV+=		CFLAGS='-Wall'
else
# mksh-static ← eglibc – try to optimise as good as we can ourselves
STATIC_ENV:=		CC='${CC}'
STATIC_ENV+=		CFLAGS='-Os -Wall'
STATIC_ENV+=		LDFLAGS='${LDFLAGS} -static'
endif
STATIC_ENV+=		CPPFLAGS='${CPPFLAGS} ${CPPFLAGS_s}'
STATIC_ENV+=		HAVE_SETLOCALE_CTYPE=0	# no locale for it, either
#STATIC_ENV+=		HAVE_CAN_COMBINE=0	# diet eats most of our CFLAGS


# This is already a part of CFLAGS
BUILD_ENV+=		HAVE_CAN_WALL=0
STATIC_ENV+=		HAVE_CAN_WALL=0

# Debian #532343, #539158
BUILD_ENV+=		USE_PRINTF_BUILTIN=1
STATIC_ENV+=		USE_PRINTF_BUILTIN=1

# avr32 currently has no locales
ifeq (${DEB_BUILD_ARCH},avr32)
BUILD_ENV+=		HAVE_SETLOCALE_CTYPE=0
endif

# shut up build log checkers that don’t know what they are doing
# Debian #492377, #572252, Ubuntu too
_shutup:=		| sed \
			-e 's!conftest.c:\([0-9]*\(:[0-9]*\)*\): error:!cE(\1) -!g' \
			-e 's!conftest.c:\([0-9]*\(:[0-9]*\)*\): warning:!cW(\1) -!g'


build: debian/.build_stamp

do-build:
	# Copy extra code implementing printf(1) as a builtin.
	cp ../../${PRINTF_C} printf.c
ifeq (0,${HAVE_CAN_COMBINE})
	# Try to build mksh. No -combine supported by compiler driver.
	@sh ../../Build.sh -r
else
	# Try to build mksh. If -combine fails, retry without.
	@echo '=== trying to build with -fwhole-program --combine ==='
	@if sh ../../Build.sh -r -c combine && test -f mksh; then \
		echo '=== done, wonderful ==='; \
	else \
		echo '=== FAILED because your gcc is broken ==='; \
		echo; \
		echo '=== trying to build withOUT -fwhole-program' \
		    '--combine ==='; \
		sh ../../Build.sh -r || exit 1; \
		echo '=== note: for better optimisation, fix your gcc! ==='; \
	fi
endif
	# We have a binary!
ifeq (,$(filter nocheck,$(DEB_BUILD_OPTIONS)))
	./mksh -c true
	#
	# Dear buildd administrators,
	#
	# if this fails, please install /dev/ptmx et al. in your
	# chroot, i.e. the devices needed by openpty().  Thanks!
	# Note: /dev/tty is required by the regression test too.
	#
# script(1) fails on Debian GNU/Hurd in pbuilder; this gets us 30 failures
	if test '!' -e ../../attended && test x"$$(uname -s)" = x"GNU"; then \
		./test.sh -v; \
	else \
		echo >test.wait; \
		script -qc './test.sh -v; x=$$?; rm -f test.wait; exit $$x'; \
		maxwait=0; \
		while test -e test.wait; do \
			sleep 1; \
			maxwait=$$(expr $$maxwait + 1); \
			test $$maxwait -lt 900 || break; \
		done; \
	fi
	# end of regression test suite
endif

debian/.build_stamp:
	dh_testdir
	-rm -rf builddir
	mkdir builddir builddir/full builddir/small
ifeq (,$(filter nocheck,$(DEB_BUILD_OPTIONS)))
	# failure here may lead to testsuite failures
	mkdir builddir/tloc
	# cf. Debian #522776
	-localedef -i en_US -c -f UTF-8 builddir/tloc/en_US.UTF-8
endif
	#
	# build mksh-full
	#
	_topdir=$$(pwd); cd builddir/full && env ${BUILD_ENV} \
	    LC_ALL=C LOCPATH=$$_topdir/builddir/tloc \
	    $$_topdir/debian/rules -e do-build ${_shutup}
	#
	# build mksh-diet (if dietlibc), mksh-small (otherwise)
	#
	_topdir=$$(pwd); cd builddir/small && env ${STATIC_ENV} \
	    LC_ALL=C LOCPATH=$$_topdir/builddir/tloc \
	    $$_topdir/debian/rules -e do-build ${_shutup}
	ln builddir/small/mksh builddir/small/mksh-static
	#
	# finished building
	#
	touch $@

clean:
	dh_testdir
	-rm -f debian/.*_stamp
	-rm -rf builddir
	dh_clean

install: build
	dh_testdir
	dh_testroot
	dh_clean -k
	dh_installdirs

# Build architecture-independent files here.
binary-indep: build install
# We have nothing to do by default.

# Build architecture-dependent files here.
binary-arch: build install
	dh_testdir
	dh_testroot
	dh_installchangelogs
	dh_installdocs
	dh_installexamples
	dh_install
	dh_installmenu
	dh_installdebconf
#	dh_installlogrotate
#	dh_installemacsen
#	dh_installpam
#	dh_installmime
#	dh_installinit
#	dh_installcron
#	dh_installinfo
	dh_installman
	install -m 644 dot.mkshrc debian/mksh/etc/mkshrc
	dh_link
	dh_strip
	dh_compress
	cd debian/mksh/usr/share/man/man1 && ln -sf mksh.1.gz mksh-static.1.gz
	dh_fixperms
#	dh_perl
#	dh_python
#	dh_makeshlibs
	dh_installdeb
	dh_shlibdeps
	dh_gencontrol
	dh_md5sums
	dh_builddeb

binary: binary-indep binary-arch
.PHONY: build clean binary-indep binary-arch binary install check