#!/usr/bin/make -f

SONAME=liblbfgsb.so.0

# Enable hardening, but remove pie flag since we're building a shared
# object.  See also
# https://lists.debian.org/debian-devel/2013/01/msg00225.html.
MAINTOPTS = hardening=+all,-pie
FCFLAGS:=$(shell DEB_BUILD_MAINT_OPTIONS=$(MAINTOPTS) dpkg-buildflags --get FCFLAGS)
LDFLAGS:=$(shell DEB_BUILD_MAINT_OPTIONS=$(MAINTOPTS) dpkg-buildflags --get LDFLAGS)

MAINTOPTS_EX = hardening=+all
FCFLAGS_EX:=$(shell DEB_BUILD_MAINT_OPTIONS=$(MAINTOPTS_EX) dpkg-buildflags --get FCFLAGS)
LDFLAGS_EX:=$(shell DEB_BUILD_MAINT_OPTIONS=$(MAINTOPTS_EX) dpkg-buildflags --get LDFLAGS)

%:
	dh $@

build/%.o: %.f
	gfortran $(FCFLAGS) -fPIC -o $@ -c $<

build/liblbfgsb.so: build/lbfgsb.o build/timer.o
	gfortran $(FCFLAGS) -shared $(LDFLAGS) -Wl,-soname,$(SONAME) \
		 -o build/$(SONAME) $^ -lblas -llapack
	ln -s $(SONAME) $@

build/liblbfgsb.a: build/lbfgsb.o build/timer.o
	ar cr $@ $^

build/lbfgsb-examples_driver1_77: driver1.f build/liblbfgsb.so
	gfortran $(FCFLAGS_EX) $(LDFLAGS_EX) -o $@ $< -llbfgsb -Lbuild

build/lbfgsb-examples_driver1_90: driver1.f90 build/liblbfgsb.so
	gfortran $(FCFLAGS_EX) $(LDFLAGS_EX) -o $@ $< -llbfgsb -Lbuild

build/lbfgsb-examples_driver2_77: driver2.f build/liblbfgsb.so
	gfortran $(FCFLAGS_EX) $(LDFLAGS_EX) -o $@ $< -llbfgsb -Lbuild

build/lbfgsb-examples_driver2_90: driver2.f90 build/liblbfgsb.so
	gfortran $(FCFLAGS_EX) $(LDFLAGS_EX) -o $@ $< -llbfgsb -Lbuild

build/lbfgsb-examples_driver3_77: driver3.f build/liblbfgsb.so
	gfortran $(FCFLAGS_EX) $(LDFLAGS_EX) -o $@ $< -llbfgsb -Lbuild

build/lbfgsb-examples_driver3_90: driver3.f90 build/liblbfgsb.so
	gfortran $(FCFLAGS_EX) $(LDFLAGS_EX) -o $@ $< -llbfgsb -Lbuild

execute_before_dh_auto_build:
	mkdir -p build

override_dh_auto_build: build/liblbfgsb.so build/liblbfgsb.a \
 build/lbfgsb-examples_driver1_77 build/lbfgsb-examples_driver1_90 \
 build/lbfgsb-examples_driver2_77 build/lbfgsb-examples_driver2_90 \
 build/lbfgsb-examples_driver3_77 build/lbfgsb-examples_driver3_90

execute_before_dh_auto_clean:
	rm -rf build

override_dh_compress:
	dh_compress -X.pdf -X.f -X.f90 -Xoutput_