#!/usr/bin/make -f

# Uncomment this to turn on verbose mode.
#export DH_VERBOSE=1


DEB_BUILD_ARCH_OS ?= $(shell dpkg-architecture -qDEB_BUILD_ARCH_OS)
DEB_BUILD_GNU_TYPE ?= $(shell dpkg-architecture -qDEB_BUILD_GNU_TYPE)
DEB_HOST_GNU_TYPE  ?= $(shell dpkg-architecture -qDEB_HOST_GNU_TYPE)
DEB_HOST_MULTIARCH ?= $(shell dpkg-architecture -qDEB_HOST_MULTIARCH)

# Disabled because this FTBFS with multiple jobs (bug 620973)
#ifneq (,$(filter parallel=%,$(DEB_BUILD_OPTIONS)))
#         NUMJOBS = $(patsubst parallel=%,%,$(filter parallel=%,$(DEB_BUILD_OPTIONS)))
#         MAKEFLAGS += -j$(NUMJOBS)
#endif

# Add here any variable or target overrides you need.
# where sources are
DEB_SRCDIR = $(CURDIR)/src

# no check for this software
#DEB_MAKE_CHECK_TARGET :=

# note that debian patch default_metis_v5.patch
# has set metis version compatibility to 5
# (SCOTCH_METIS_VERSION=5) in metis.h (library_metis.h),
# equivalent to configuring the build with -DSCOTCH_METIS_VERSION=5

CCP=mpicc
export CFLAGS_COMMON = -O3 -fPIC -I. \
			-Drestrict=__restrict \
			-DCOMMON_FILE_COMPRESS_GZ \
			-DCOMMON_FILE_COMPRESS_BZ2 \
			-DCOMMON_FILE_COMPRESS_LZMA \
			-DSCOTCH_PTHREAD -DCOMMON_PTHREAD \
			-DSCOTCH_PTHREAD_NUMBER=2 \
			-DCOMMON_PTHREAD_FILE \
			-DSCOTCH_PTHREAD_MPI \
			-DCOMMON_RANDOM_FIXED_SEED \
			-DSCOTCH_RENAME -DSCOTCH_RENAME_PARSER \
			$(shell dpkg-buildflags --get CFLAGS)
export LDFLAGS_COMMON = -pthread -lz -lbz2 -llzma -lm -lrt $(shell dpkg-buildflags --get LDFLAGS)

# hurd does not have POSIX time and therefore needs sys/time.h to define struct timeval
# hurd does not support pthread_setaffinity_np (-DSCOTCH_PTHREAD_AFFINITY_LINUX)
ifeq ($(DEB_BUILD_ARCH_OS),hurd)
  CFLAGS_COMMON += -DHAVE_SYS_TIME_H
else
  CFLAGS_COMMON += -DCOMMON_PTHREAD_AFFINITY_LINUX
endif

# By default, halt on test (check) failures. But,
# - hurd times out on buildd during build-time checks
# - m68k segfaults inside the qemu emulator used for builds
# - powerpcspe segfaults on test_scotch_graph_order in INTSIZE64
# so don't halt on test failures on these arches.
# In fact don't run tests at all on hurd.
ifeq ($(DEB_HOST_ARCH_OS),hurd)
  HALT_ON_TEST_ERROR = no
  SKIP_TESTS = yes
else ifeq ($(DEB_HOST_ARCH),m68k)
  HALT_ON_TEST_ERROR = no
else ifeq ($(DEB_HOST_ARCH),powerpcspe)
  HALT_ON_TEST_ERROR = no
else
  HALT_ON_TEST_ERROR = yes
endif
ifeq (nocheck,$(findstring nocheck,$(DEB_BUILD_OPTIONS)))
  SKIP_TESTS = yes
endif


DEB_STRIPPED_UPSTREAM_VERSION = $(shell echo $(DEB_UPSTREAM_VERSION) | sed -n -e 's/\.dfsg.*$$//p')
SCOTCH_VERSION=$(DEB_STRIPPED_UPSTREAM_VERSION)

INTSIZE_VERS := $(shell echo "int int32 int64 long")

export PRTE_MCA_plm_ssh_agent=/bin/false                #workaround to start MPI-applications in chroot

%:
	dh $@

override_dh_auto_configure:
	echo "Using preconfigured Makefile.inc."

override_dh_auto_build:
	for v in $(INTSIZE_VERS); do \
	   mkdir -p $(CURDIR)/$$v; \
	   mkdir -p $(CURDIR)/$$v/bin; \
	   mkdir -p $(CURDIR)/$$v/lib; \
	   mkdir -p $(CURDIR)/$$v/include; \
	   mkdir -p $(CURDIR)/$$v/share/man/man1; \
	done
	set -e; \
	for v in $(INTSIZE_VERS); do \
	   echo "compiling for $$v"; \
	   cp debian/Makefile_$$v.inc src/Makefile.inc; \
	   (cd src && $(MAKE) realclean prefix=$(CURDIR)/$$v); \
	   (cd src && $(MAKE) scotch ptscotch prefix=$(CURDIR)/$$v); \
	   (cd src && $(MAKE) esmumps ptesmumps prefix=$(CURDIR)/$$v); \
	   echo "check for $$v"; \
	   if [ "x$(SKIP_TESTS)" != "xyes" ]; then \
	     if [ "x$(HALT_ON_TEST_ERROR)" = "xno" ]; then \
	       (cd src && LD_LIBRARY_PATH=$(CURDIR)/src/check/../../lib:$(LD_LIBRARY_PATH) $(MAKE) check prefix=$(CURDIR)/$$v) || /bin/true; \
	     else \
	       (cd src && LD_LIBRARY_PATH=$(CURDIR)/src/check/../../lib:$(LD_LIBRARY_PATH) $(MAKE) check prefix=$(CURDIR)/$$v); \
	     fi; \
	   fi; \
	   echo "install for $$v"; \
	   (cd src && $(MAKE) install prefix=$(CURDIR)/$$v); \
	   mv $$v/bin/gbase $$v/bin/scotch_gbase; \
	   mv $$v/bin/gmap $$v/bin/scotch_gmap; \
	   mv $$v/bin/gpart $$v/bin/scotch_gpart; \
	   rm -rf lib; \
	   rm -f src/Makefile.inc; \
	done

override_dh_auto_install:
#	find . -name libscotch.so | xargs ls -l; \
#	Install [par]metis-compatibility symlinks
	for v in $(INTSIZE_VERS); do \
	   (cd $$v/lib && ln -s libscotchmetisv5.a libmetis.a); \
	   (cd $$v/lib && ln -s libscotchmetisv5.so libmetis.so); \
	   (cd $$v/lib && ln -s libptscotchparmetisv3.a libparmetis.a); \
	   (cd $$v/lib && ln -s libptscotchparmetisv3.so libparmetis.so); \
	done

#	add suffix to {int32,int64,long}/bin/*
	for file in $(shell ls int32/bin); do \
	   (cd int32/bin && mv $$file $$file-int32); \
	done
	for file in $(shell ls int64/bin); do \
	   (cd int64/bin && mv $$file $$file-int64); \
	done
	for file in $(shell ls long/bin); do \
	   (cd long/bin && mv $$file $$file-long); \
	done
#       Add "#include <cstdio>" to main [pt]scotch.h
	find . -name \*scotch.h | xargs perl -pi -e "s|\/\*\+ Version flags|\#ifdef \_\_cplusplus\n\#include \<cstdio\>\n\#else\n\#include \<stdio.h\>\n\#endif\n\n\/\*\+ Version flags|"


override_dh_installman:
	dh_installman
	mv debian/scotch/usr/share/man/man1/gmap.1 debian/scotch/usr/share/man/man1/scotch_gmap.1
	mv debian/scotch/usr/share/man/man1/gbase.1 debian/scotch/usr/share/man/man1/scotch_gbase.1
	(cd debian/scotch/usr/share/man/man1 && ln -sf scotch_gmap.1.gz scotch_gpart.1.gz)
	for file in $(shell ls int/bin); do \
	  if [ -x debian/scotch/usr/bin/$$file ]; then \
	    (cd debian/scotch/usr/share/man/man1 && ln -sf $$file.1.gz $$file-int32.1.gz); \
	    (cd debian/scotch/usr/share/man/man1 && ln -sf $$file.1.gz $$file-int64.1.gz); \
	    (cd debian/scotch/usr/share/man/man1 && ln -sf $$file.1.gz $$file-long.1.gz); \
	  fi; \
	  if [ -x debian/ptscotch/usr/bin/$$file ]; then \
	    (cd debian/ptscotch/usr/share/man/man1 && ln -sf $$file.1.gz $$file-int32.1.gz); \
	    (cd debian/ptscotch/usr/share/man/man1 && ln -sf $$file.1.gz $$file-int64.1.gz); \
	    (cd debian/ptscotch/usr/share/man/man1 && ln -sf $$file.1.gz $$file-long.1.gz); \
	  fi; \
	done


override_dh_clean:
	dh_clean
	for v in $(INTSIZE_VERS); do \
	   (if [ -d $$v ]; then rm -rf $$v; fi); \
	done
	cp debian/Makefile.inc src/
	make -C src/check realclean
	make -C src realclean
	rm -f src/Makefile.inc