#!/usr/bin/make -f

#export DH_VERBOSE=1
SHELL=/bin/bash
BUILDDIR := debian/build

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)
DEB_HOST_ARCH_OS    ?= $(shell dpkg-architecture -qDEB_HOST_ARCH_OS)
DEB_HOST_ARCH_BITS  ?= $(shell dpkg-architecture -qDEB_HOST_ARCH_BITS)
DEB_HOST_MULTIARCH  ?= $(shell dpkg-architecture -qDEB_HOST_MULTIARCH)

# The 'build' target needs special handling because there there is a directory
# named 'build'.
.PHONY: build
# The build target must not be empty.  Sadly because of how make
# works, we have do duplicate the target in this case.
build:
	dh $@ -B$(BUILDDIR)
%:
	dh $@ -B$(BUILDDIR)

#
# configure
#
CONFFLAGS := LTFLAGS=--no-silent \
             --host=$(DEB_HOST_GNU_TYPE) \
             --build=$(DEB_BUILD_GNU_TYPE) \
             --enable-layout=Debian \
             --includedir=/usr/include/apr-1.0 \
             --with-installbuilddir=/usr/share/apr-1.0/build \
             --libdir=/usr/lib/$(DEB_HOST_MULTIARCH) \
             --enable-nonportable-atomics \
             --enable-allocator-uses-mmap \
             ac_cv_prog_AWK=mawk

# apr_cv_mutex_robust_shared causes hangs in procmutex test on arm(el|hf) and alpha
ifneq (,$(findstring armel,$(DEB_HOST_ARCH)))
  CONFFLAGS += apr_cv_mutex_robust_shared=no
endif
ifneq (,$(findstring armhf,$(DEB_HOST_ARCH)))
  CONFFLAGS += apr_cv_mutex_robust_shared=no
endif
ifneq (,$(findstring alpha,$(DEB_HOST_ARCH)))
  CONFFLAGS += apr_cv_mutex_robust_shared=no
endif

# SH4 cannot use proc_pthread.
ifneq (,$(findstring sh4,$(DEB_HOST_ARCH)))
  CONFFLAGS += apr_cv_hasprocpthreadser=no ac_cv_define_PTHREAD_PROCESS_SHARED=no
endif

# multicast not supported on Hurd
ifeq (hurd,$(DEB_HOST_ARCH_OS))
  CONFFLAGS += apr_cv_struct_ipmreq=no
endif

# some minimal cross-building support
ifneq ($(DEB_HOST_GNU_TYPE),$(DEB_BUILD_GNU_TYPE))
  ifeq ($(DEB_HOST_ARCH_OS),linux)
    CONFFLAGS += ac_cv_file__dev_zero=yes \
                 ac_cv_func_setpgrp_void=yes \
                 apr_cv_epoll=yes \
                 ac_cv_struct_rlimit=yes \
                 apr_cv_tcp_nodelay_with_cork=yes \
                 apr_cv_process_shared_works=yes
  endif
  ifeq ($(DEB_HOST_ARCH_BITS),32)
    CONFFLAGS += ac_cv_sizeof_struct_iovec=8
  else ifeq ($(DEB_HOST_ARCH_BITS),64)
    CONFFLAGS += ac_cv_sizeof_struct_iovec=16
  endif
endif

override_dh_autoreconf:
	LC_ALL=C dh_autoreconf ./buildconf

override_dh_auto_configure:
	mkdir -p $(BUILDDIR)/docs
	# We need to force the use of bash here. Otherwise, if apr is built with
	# /bin/sh -> /bin/bash, the resulting libtool will not work on systems
	# where /bin/sh -> /bin/dash.
	cd $(BUILDDIR) && CONFIG_SHELL=/bin/bash /bin/bash $(CURDIR)/configure $(CONFFLAGS)
ifeq (linux,$(DEB_HOST_ARCH_OS))
	if grep -q APR_HAS_POSIXSEM_SERIALIZE.*0 $(BUILDDIR)/include/apr.h ;\
	then \
		echo "WARNING: This is Linux but configure did not detect POSIX semaphores." ;\
		if ! df /dev/shm/.|grep -q ^tmpfs ;\
		then \
			echo "ERROR: POSIX semaphores not usable and /dev/shm not mounted." ;\
			echo "ERROR: Aborting." ;\
			echo "HINT: If you are using pbuilder or cowbuilder, add /dev/shm to BINDMOUNTS" ;\
			echo "HINT: in pbuilderrc" ;\
			exit 1 ;\
		fi ;\
	fi
endif


#
# build
#
ifneq (,$(filter parallel=%,$(DEB_BUILD_OPTIONS)))
  NUMJOBS := $(patsubst parallel=%,%,$(filter parallel=%,$(DEB_BUILD_OPTIONS)))
endif

override_dh_auto_build:
	$(MAKE) -j$(NUMJOBS) -C $(BUILDDIR) all dox
	find debian/build/docs/dox/html -name \*.md5 -delete

#
# test
#

ifeq (,$(findstring nocheck,$(DEB_BUILD_OPTIONS)))

# the testsockets test will fail on vservers (no 127.0.0.1) or if ipv6 is
# enabled in the kernel but not configured on any interface
IGNORE_TESTSOCK = $(shell IGN=false; \
	/sbin/ifconfig|grep -q 127.0.0.1 || IGN=true; \
	grep -q ipv6 /proc/net/protocols && ( /sbin/ifconfig|grep -q inet6 || IGN=true ) ; \
	echo $$IGN )

override_dh_auto_test:
	$(MAKE) -C $(BUILDDIR)/test -j$(NUMJOBS) all
	cd $(BUILDDIR)/test && ./testall -v testsockets testsock || $(IGNORE_TESTSOCK)
	cd $(BUILDDIR)/test && ( ulimit -S -s 8192 ; ./testall -v testatomic)
	cd $(BUILDDIR)/test && ./testall -v -x testsockets testsock testatomic

else
override_dh_auto_test:

endif


#
# install
#
override_dh_auto_install:
	dh_auto_install --destdir=debian/tmp
	perl -p -i -e "s,^dependency_libs=.*,dependency_libs=''," debian/tmp/usr/lib/$(DEB_HOST_MULTIARCH)/libapr-1.la
	# Remove hostname to make build reproducible
	perl -p -i -e 's/Libtool was configured on host.*//' debian/tmp/usr/share/apr-1.0/build/libtool
	if ! head -n 1 debian/tmp/usr/share/apr-1.0/build/libtool | grep -q /bin/bash ; then \
		echo ERROR: The built libtool uses /bin/sh instead of /bin/bash ; \
		exit 1 ; \
	fi

override_dh_strip:
	dh_strip --dbg-package=libapr1-dbg

override_dh_makeshlibs:
	dh_makeshlibs -- -Idebian/symbols.$(DEB_HOST_ARCH_OS)

override_dh_auto_clean:
	dh_auto_clean
	rm -rf $(BUILDDIR)