#!/usr/bin/make -f

DEB_BUILD_ARCH=$(shell dpkg-architecture -qDEB_BUILD_ARCH)
DEB_HOST_ARCH=$(shell dpkg-architecture -qDEB_HOST_ARCH)
DEB_HOST_ARCH_OS=$(shell dpkg-architecture -qDEB_HOST_ARCH_OS)
ifneq (${DEB_BUILD_ARCH},${DEB_HOST_ARCH})
DEB_HOST_GNU_TYPE=$(shell dpkg-architecture -qDEB_HOST_GNU_TYPE)
endif

# is ${CC} defined anywhere (other than implicit rules?)
ifneq (,$(findstring $(origin CC),default undefined))
# no - then default to gcc (or cross-gcc)
ifneq (${DEB_BUILD_ARCH},${DEB_HOST_ARCH})
CC=			${DEB_HOST_GNU_TYPE}-gcc
else
CC=			gcc
endif
endif

EXTRA_CPPFLAGS=		-DPAX_SAFE_PATH=\"/usr/bin:/bin\"
EXTRA_CFLAGS=		-Wall -Wextra -Wformat -fno-strict-aliasing
EXTRA_LDFLAGS=		-Wl,--as-needed

ifneq (kfreebsd,${DEB_HOST_ARCH_OS})
ifneq (x32,${DEB_HOST_ARCH})
EXTRA_CPPFLAGS+=	-DLONG_OFF_T
endif
endif

# probably on all
EXTRA_CPPFLAGS+=	-DHAVE_LINKAT

ifneq (,$(wildcard /usr/share/dpkg/buildflags.mk))
# dpkg-dev (>= 1.16.1~)
dpkgbuildflagsmkescape=$(subst \,\\\,$(1))
DEB_CFLAGS_MAINT_APPEND=$(call dpkgbuildflagsmkescape,${EXTRA_CFLAGS})
DEB_CPPFLAGS_MAINT_APPEND=$(call dpkgbuildflagsmkescape,${EXTRA_CPPFLAGS})
DEB_LDFLAGS_MAINT_APPEND=$(call dpkgbuildflagsmkescape,${EXTRA_LDFLAGS})
DEB_BUILD_MAINT_OPTIONS=hardening=+all
include /usr/share/dpkg/buildflags.mk
else
# old-fashioned way to determine build flags
CFLAGS=			-O$(if $(findstring noopt,${DEB_BUILD_OPTIONS}),0,2) -g
CFLAGS+=		${EXTRA_CFLAGS}
CPPFLAGS+=		${EXTRA_CPPFLAGS}
LDFLAGS+=		${EXTRA_LDFLAGS}
endif

build: build-arch build-indep
build-arch: debian/.build_stamp
build-indep:

debian/.build_stamp:
	dh_testdir
	${CC} ${CPPFLAGS} ${CFLAGS} ${LDFLAGS} -o pax \
	    ar.c ar_io.c ar_subs.c buf_subs.c cache.c cpio.c file_subs.c \
	    ftree.c gen_subs.c getoldopt.c options.c pat_rep.c pax.c \
	    sel_subs.c tables.c tar.c tty_subs.c
	test -x pax
	echo .nr g 2 | cat - cpio.1 >debian/paxcpio.1
	echo .nr g 2 | cat - pax.1 >debian/pax.1
	echo .nr g 2 | cat - tar.1 >debian/paxtar.1
	@:>$@

clean:
	dh_testdir
	dh_clean
	-rm -f debian/.*_stamp \
	    debian/paxcpio.1 debian/pax.1 debian/paxtar.1 pax

binary-indep: build-indep

binary-arch: build-arch
	dh $@

# avoid dh7 being "too" automagic
override_dh_auto_install:

binary: binary-arch binary-indep

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