#!/usr/bin/make -f
export DH_VERBOSE=1

export DEB_BUILD_MAINT_OPTIONS=hardening=+all
debian_cflags:=$(shell dpkg-buildflags --get CFLAGS) -fPIC $(shell dpkg-buildflags --get CPPFLAGS)
debian_ldflags:=$(shell dpkg-buildflags --get LDFLAGS) -fPIC

FLAVOURS := full light extras
DYN_MODS := \
	http-auth-pam \
	http-cache-purge \
	http-dav-ext \
	http-echo \
	http-fancyindex \
	http-geoip \
	http-headers-more-filter \
	http-image-filter \
	http-lua \
	http-ndk \
	http-perl \
	http-subs-filter \
	http-uploadprogress \
	http-upstream-fair \
	http-xslt-filter \
	mail \
	nchan \
	rtmp \
	stream

MODULESDIR = $(CURDIR)/debian/modules
BASEDIR = $(CURDIR)
$(foreach flavour,$(FLAVOURS),$(eval BUILDDIR_$(flavour) = $(CURDIR)/debian/build-$(flavour)))

DEB_BUILD_ARCH ?=$(shell dpkg-architecture -qDEB_BUILD_ARCH)
ifeq ($(DEB_BUILD_ARCH),sparc)
	debian_cflags += -m32 -mcpu=ultrasparc
endif

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

MODULESPATCHDIR = $(CURDIR)/debian/modules/patches
modules_with_patches := $(notdir $(wildcard $(CURDIR)/debian/modules/patches/*))

# configure flags
common_configure_flags := \
			--with-cc-opt="$(debian_cflags)" \
			--with-ld-opt="$(debian_ldflags)" \
			--prefix=/usr/share/nginx \
			--conf-path=/etc/nginx/nginx.conf \
			--http-log-path=/var/log/nginx/access.log \
			--error-log-path=/var/log/nginx/error.log \
			--lock-path=/var/lock/nginx.lock \
			--pid-path=/run/nginx.pid \
			--modules-path=/usr/lib/nginx/modules \
			--http-client-body-temp-path=/var/lib/nginx/body \
			--http-fastcgi-temp-path=/var/lib/nginx/fastcgi \
			--http-proxy-temp-path=/var/lib/nginx/proxy \
			--http-scgi-temp-path=/var/lib/nginx/scgi \
			--http-uwsgi-temp-path=/var/lib/nginx/uwsgi \
			--with-debug \
			--with-pcre-jit \
			--with-http_ssl_module \
			--with-http_stub_status_module \
			--with-http_realip_module \
			--with-http_auth_request_module \
			--with-http_v2_module \
			--with-http_dav_module \
			--with-http_slice_module \
			--with-threads

light_configure_flags := \
			$(common_configure_flags) \
			--with-http_gzip_static_module \
			--without-http_browser_module \
			--without-http_geo_module \
			--without-http_limit_req_module \
			--without-http_limit_conn_module \
			--without-http_memcached_module \
			--without-http_referer_module \
			--without-http_split_clients_module \
			--without-http_userid_module \
			--add-dynamic-module=$(MODULESDIR)/http-echo

full_configure_flags := \
			$(common_configure_flags) \
			--with-http_addition_module \
			--with-http_geoip_module=dynamic \
			--with-http_gunzip_module \
			--with-http_gzip_static_module \
			--with-http_image_filter_module=dynamic \
			--with-http_sub_module \
			--with-http_xslt_module=dynamic \
			--with-stream=dynamic \
			--with-stream_ssl_module \
			--with-stream_ssl_preread_module \
			--with-mail=dynamic \
			--with-mail_ssl_module \
			--add-dynamic-module=$(MODULESDIR)/http-auth-pam \
			--add-dynamic-module=$(MODULESDIR)/http-dav-ext \
			--add-dynamic-module=$(MODULESDIR)/http-echo \
			--add-dynamic-module=$(MODULESDIR)/http-upstream-fair \
			--add-dynamic-module=$(MODULESDIR)/http-subs-filter

extras_configure_flags := \
			$(common_configure_flags) \
			--with-http_addition_module \
			--with-http_flv_module \
			--with-http_geoip_module=dynamic \
			--with-http_gunzip_module \
			--with-http_gzip_static_module \
			--with-http_image_filter_module=dynamic \
			--with-http_mp4_module \
			--with-http_perl_module=dynamic \
			--with-http_random_index_module \
			--with-http_secure_link_module \
			--with-http_sub_module \
			--with-http_xslt_module=dynamic \
			--with-mail=dynamic \
			--with-mail_ssl_module \
			--with-stream=dynamic \
			--with-stream_ssl_module \
			--with-stream_ssl_preread_module \
			--add-dynamic-module=$(MODULESDIR)/http-headers-more-filter \
			--add-dynamic-module=$(MODULESDIR)/http-auth-pam \
			--add-dynamic-module=$(MODULESDIR)/http-cache-purge \
			--add-dynamic-module=$(MODULESDIR)/http-dav-ext \
			--add-dynamic-module=$(MODULESDIR)/http-ndk \
			--add-dynamic-module=$(MODULESDIR)/http-echo \
			--add-dynamic-module=$(MODULESDIR)/http-fancyindex \
			--add-dynamic-module=$(MODULESDIR)/nchan \
			--add-dynamic-module=$(MODULESDIR)/http-lua \
			--add-dynamic-module=$(MODULESDIR)/rtmp \
			--add-dynamic-module=$(MODULESDIR)/http-uploadprogress \
			--add-dynamic-module=$(MODULESDIR)/http-upstream-fair \
			--add-dynamic-module=$(MODULESDIR)/http-subs-filter

%:
	dh $@ --without autoreconf

override_dh_auto_configure: config_patch_modules $(foreach flavour,$(FLAVOURS),config.arch.$(flavour))
override_dh_auto_build:     $(foreach flavour,$(FLAVOURS),build.arch.$(flavour))
override_dh_strip:          $(foreach flavour,$(FLAVOURS),strip.arch.$(flavour)) $(foreach mod,$(DYN_MODS),strip.mods.$(mod))
override_dh_clean:          clean_patch_modules $(foreach flavour,$(FLAVOURS),clean.$(flavour))
	dh_clean

override_dh_install:
	dh_install
	DH_AUTOSCRIPTDIR=$(CURDIR)/debian/autoscripts debian/dh_nginx

override_dh_installinit:
	dh_installinit --no-restart-on-upgrade --no-start --name=nginx

override_dh_systemd_enable:
	dh_systemd_enable --name=nginx

override_dh_installlogrotate:
	dh_installlogrotate --package nginx-common --name=nginx

build.arch.%:
	$(MAKE) -C $(BUILDDIR_$*) build

strip.arch.%:
	dh_strip --package=nginx-$(*) -O--dbgsym-migration='nginx-$(*)-dbg (<< 1.10.1-3~)'

strip.mods.%:
	dh_strip --package=libnginx-mod-$(*) -O--automatic-dbgsym

config_patch_modules: $(foreach mod,$(modules_with_patches),config.patch.$(mod))
config.patch.%:
	cd $(MODULESDIR)/$* && QUILT_PATCHES=$(MODULESPATCHDIR)/$* quilt push -a

clean_patch_modules: $(foreach mod,$(modules_with_patches),clean.patch.$(mod))
clean.patch.%:
	if [ -s $(MODULESDIR)/$*/.pc/applied-patches ]; then \
		cd $(MODULESDIR)/$* && QUILT_PATCHES=$(MODULESPATCHDIR)/$* quilt pop -q -a; \
		rm -rf $(MODULESDIR)/$*/.pc; \
	fi

config.arch.%:
	dh_testdir
	mkdir -p $(BUILDDIR_$*)
	cp -Pa $(CURDIR)/auto $(BUILDDIR_$*)/
	cp -Pa $(CURDIR)/conf $(BUILDDIR_$*)/
	cp -Pa $(CURDIR)/configure $(BUILDDIR_$*)/
	cp -Pa $(CURDIR)/contrib $(BUILDDIR_$*)/
	cp -Pa $(CURDIR)/src $(BUILDDIR_$*)/
	cp -Pa $(CURDIR)/man $(BUILDDIR_$*)/
	cd $(BUILDDIR_$*) && ./configure $($*_configure_flags)

clean.%:
	rm -rf $(BUILDDIR_$*)

.PHONY: config_patch_modules clean_patch_modules