#! /usr/bin/make -f

#export DH_VERBOSE=1

export DEB_BUILD_MAINT_OPTIONS = hardening=+all
DPKG_EXPORT_BUILDFLAGS = 1
include /usr/share/dpkg/buildflags.mk

CFLAGS += -Wall -g

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

ifneq (,$(filter parallel=%,$(DEB_BUILD_OPTIONS)))
  NUMJOBS = $(patsubst parallel=%,%,$(filter parallel=%,$(DEB_BUILD_OPTIONS)))
  MAKEFLAGS += -j$(NUMJOBS)
endif

DEB_BUILD_GNU_TYPE := $(shell dpkg-architecture -qDEB_BUILD_GNU_TYPE)
DEB_HOST_GNU_TYPE := $(shell dpkg-architecture -qDEB_HOST_GNU_TYPE)
DEB_HOST_ARCH := $(shell dpkg-architecture -qDEB_HOST_ARCH)

extra_build_targets += build-udeb-stamp

arch64_map = i386=x86_64 powerpc=powerpc64 sparc=sparc64 s390=s390x
ifneq (,$(filter $(DEB_HOST_ARCH)=%, $(arch64_map)))
  HOST64 = $(strip $(patsubst $(DEB_HOST_ARCH)=%, %, \
	     $(filter $(DEB_HOST_ARCH)=%, $(arch64_map))))-linux-gnu
  CC64 = gcc -m64
  extra_build_targets += build64-stamp
endif

ifeq ($(DEB_HOST_GNU_TYPE),$(DEB_BUILD_GNU_TYPE))
  CONFIG_OPTS = --build=$(DEB_BUILD_GNU_TYPE)
else
  CONFIG_OPTS = --build=$(DEB_BUILD_GNU_TYPE) --host=$(DEB_HOST_GNU_TYPE)
endif

all: build

build: build-arch build-indep

build-arch: build-stamp $(extra_build_targets)
build-indep: build-stamp $(extra_build_targets)

%-stamp: %/Makefile
	$(MAKE) -C $*
ifeq (,$(findstring nocheck,$(DEB_BUILD_OPTIONS)))
	$*/strace -V
	$(MAKE) -C $* check VERBOSE=1
endif
	touch $@

build/Makefile:
	mkdir -p $(@D)
	cd $(@D); sh ../configure --enable-mpers=check --prefix=/usr $(CONFIG_OPTS)

build-udeb/Makefile:
	mkdir -p $(@D)
	cd $(@D); sh ../configure --enable-mpers=check --prefix=/usr \
		--without-libunwind --without-libiberty $(CONFIG_OPTS)

build64/Makefile:
	mkdir -p $(@D)
	cd $(@D); CC="$(CC64)" sh ../configure --enable-mpers=check --prefix=/usr --build=$(DEB_BUILD_GNU_TYPE) --host=$(HOST64)

clean:
	dh_testdir
	dh_testroot
	rm -rf build build-udeb build64 strace64.1 debian/strace64.substvars
	dh_clean

binary: binary-indep binary-arch

binary-indep:

binary-arch: build
	test -f build-stamp || make $(MFLAGS) -f debian/rules build

	# prepare 64bit executable and manpage, if it has been built
	test -f build64-stamp && ( mv build64/strace build64/strace64 ; \
		cp strace.1 strace64.1 ) || true

	dh_testdir -a
	dh_testroot -a
	dh_installdirs -a
	dh_installdocs -a
	dh_installman -a
	dh_installexamples -a
	dh_installchangelogs -a
	dh_install -a
	dh_link -a
	dh_strip -a
	dh_compress -a
	dh_fixperms -a
	dh_installdeb -a
	dh_shlibdeps -a
	dh_gencontrol -a
	dh_md5sums -a
	dh_builddeb -a