#! /usr/bin/make -f


# eventually add -O3 -march=native -mtune=native
export DEB_CFLAGS_MAINT_APPEND  = -Wall -pedantic
export DEB_CXXFLAGS_MAINT_APPEND  = -Wall -pedantic
export DEB_FFLAGS_MAINT_APPEND  = -std=legacy
export DEB_LDFLAGS_MAINT_STRIP = -Wl,-Bsymbolic-functions
# remove -Werror=implicit-function-declaration until BLACS is properly fixed
# https://bugs.debian.org/1066328
# https://github.com/Reference-ScaLAPACK/scalapack/issues/31
export DEB_BUILD_MAINT_OPTIONS = qa=-bug-implicit-func

include /usr/share/dpkg/architecture.mk

ifneq (,$(wildcard /usr/share/mpi-default-dev/debian_defaults))
include /usr/share/mpi-default-dev/debian_defaults
endif
DEFAULT_MPI=$(ARCH_DEFAULT_MPI_IMPL)

include /usr/share/dpkg/pkg-info.mk
export DEB_VERSION_UPSTREAM

%:
	dh $@ --buildsystem=cmake

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

export NUMJOBS=1
ifneq (,$(filter parallel=%,$(DEB_BUILD_OPTIONS)))
export NUMJOBS = $(patsubst parallel=%,%,$(filter parallel=%,$(DEB_BUILD_OPTIONS)))
endif

extra_flags += \
 -DBUILD_SHARED_LIBS=ON \
 -DSCALAPACK_BUILD_TESTING=ON


execute_after_dh_clean:
	cd BLACS/INSTALL; rm -rf xintface Makefile CMakeCache.txt cmake_install.cmake CMakeFiles
	cd PBLAS; rm -f TESTING/PB_Cabort.c TESTING/PB_Cwarn.c TIMING/PB_Cabort.c TIMING/PB_Cwarn.c
	rm -rf build-openmpi build-mpich

override_dh_auto_configure-indep:
override_dh_auto_build-indep:
override_dh_auto_install-indep:
override_dh_auto_test-indep:


override_dh_auto_configure-arch:
	for flavor in openmpi mpich; do \
          echo "Configure for libscalapack-$$flavor" ; \
          dh_auto_configure --builddirectory=build-$$flavor -- $(extra_flags) \
            -DMPI_C_COMPILER=mpicc.$$flavor -DMPI_Fortran_COMPILER=mpif90.$$flavor \
            -DMPIEXEC_EXECUTABLE=/usr/bin/mpiexec.$$flavor -DMPI_FLAVOR=$$flavor ; \
	done

override_dh_auto_build-arch:
	for flavor in openmpi mpich; do \
	  echo "Building libscalapack-$$flavor" ; \
	  dh_auto_build -O--parallel --builddirectory=build-$$flavor ; \
	done

override_dh_auto_install-arch:
	echo "scalapack-mpi-dev=libscalapack-$(DEFAULT_MPI)-dev" > debian/libscalapack-mpi-dev.substvars
	for flavor in openmpi mpich; do \
	  echo "Installing scalapack-$$flavor" ; \
	  dh_auto_install -O--parallel --builddirectory=build-$$flavor ; \
	done

execute_after_dh_install-arch:
	dh_missing --list-missing
	# test executables contain RUNPATH. Remove it.
	chrpath -d debian/scalapack-mpi-test/usr/lib/$(DEB_HOST_MULTIARCH)/scalapack/*-tests/x*
	chrpath -d debian/scalapack-mpi-test/usr/lib/$(DEB_HOST_MULTIARCH)/scalapack/*-tests/PBLAS/*tst
	chrpath -d debian/scalapack-mpi-test/usr/lib/$(DEB_HOST_MULTIARCH)/scalapack/*-tests/PBLAS/TIMING/*tim


# add --max-parallel=1 to force test in sequential mode
# MPICH testsuite disabled as some tests fail -- why???

# Note: openmpi tests routinely (but unreproducibly) fail on some buildds,
# so don't let test failure halt the build on these arches (but let the tests run)
ARCH_TEST_IGNORE_FAILURE=mips64el

# On some other arches, openmpi3 tests never exit (don't even timeout),
# so skip their tests altogether until a workaround or fix is known.
ARCH_NO_OPENMPI_TEST_LIST=armel armhf i386 mipsel powerpc

# The hppa build does complete, but takes a full day to timeout on half the openmpi3 tests.
# That's too long, so add it to the no-test list
ARCH_NO_OPENMPI_TEST_LIST += hppa

override_dh_auto_test-arch:
ifeq (,$(filter nocheck,$(DEB_BUILD_OPTIONS)))
	for flavor in openmpi mpich; do \
	  echo "Running tests for libscalapack-$$flavor" ; \
	  echo '************************************************'; \
	  echo "****** TESTING $$flavor BUILD"; \
	  echo '************************************************'; \
	  for testDir in PBLAS/TESTING PBLAS/TIMING TESTING; do \
	    testfile=build-$$flavor/$${testDir}/CTestTestfile.cmake; \
	    if ! grep -q separate_arguments.*ENV.*MPIEXEC_PREFLAGS $$testfile ; then \
	      sed '0,/add_test/ s/add_test/separate_arguments(MPIEXEC_PREFLAGS NATIVE_COMMAND $$ENV{MPIEXEC_PREFLAGS})\nadd_test/' -i $$testfile; \
	      sed 's/"$${MPIEXEC_PREFLAGS}"/$${MPIEXEC_PREFLAGS}/' -i $$testfile; \
	    fi; \
	  done; \
	  RUNTESTS=yes; \
	  if [ "$$flavor" = "openmpi" ]; then \
	    MPIEXEC_PREFLAGS="--allow-run-as-root --oversubscribe"; \
	    case " $(ARCH_NO_OPENMPI_TEST_LIST) " in \
	      *\ $(DEB_HOST_ARCH)\ *) RUNTESTS=no;; \
	    esac; \
	  else \
	    unset MPIEXEC_PREFLAGS; \
	  fi; \
	  if [ "$$RUNTESTS" = "yes" ]; then \
	    ( LD_LIBRARY_PATH=$(CURDIR)/debian/tmp/usr/lib/$(DEB_HOST_MULTIARCH):$(LD_LIBRARY_PATH) \
	      MPIEXEC_PREFLAGS="$${MPIEXEC_PREFLAGS}" dh_auto_test --builddirectory=build-$$flavor 2>&1 | tee build-$$flavor/dh_auto_test.log ) || /bin/true; \
	  else \
	    echo Tests have been disabled on $(DEB_HOST_ARCH) | tee build-$$flavor/dh_auto_test.log; \
	  fi; \
	  echo '************************************************'; \
	  echo "****** TESTING OF $$flavor BUILD IS COMPLETE"; \
	  echo '************************************************'; \
	done
	# mpich has been found to Fail some tests but openmpi should not, so only check the openmpi test logs.
	# openmpi may Timeout on slower arches, so only register actual Fails (or SegFaults), assigning them return value 2
	# Test only on linux, since openmpi on other OS (kfreebsd, hurd) does not support fakeroot
	#
	# Tests are hardwired to 4 processors, so ignore failure if less than 4 are used.
	#
	if [ "$$DEB_BUILD_ARCH_OS" = "linux" ] && $$( grep -qE "Failed|SegFault" build-openmpi/dh_auto_test.log ); then \
	  if [ $(NUMJOBS) -lt 4 ]; then \
	    echo Tests are hardwired to 4 processes. Only $(NUMJOBS) processes were used for the build, so test failures will be ignored.; \
	  fi; \
	  echo "OpenMPI tests failed:"; \
	  grep -E "\(Failed\)|\(SEGFAULT\)" build-openmpi/dh_auto_test.log; \
	  if [ $(NUMJOBS) -ge 4 ]; then \
	    case " $(ARCH_TEST_IGNORE_FAILURE) " in \
	      *\ $(DEB_HOST_ARCH)\ *) echo Test failures ignored on $(DEB_HOST_ARCH);; \
	      *) return 2;; \
	    esac; \
	  fi; \
	fi
endif
