# -*- mode: makefile-gmake -*-
include petscdir.mk

# If $(PETSC_ARCH) is empty, this defines it and PETSC_DIR
include ./$(PETSC_ARCH)/lib/petsc/conf/petscvariables
include ./lib/petsc/conf/variables

OBJDIR := $(PETSC_ARCH)/obj
LIBDIR := $(PETSC_ARCH)/lib

pkgs := sys vec mat dm ksp snes ts tao ml
pkgs_reverse := ml tao ts snes ksp dm mat vec sys

# Note: SONAME_FUNCTION, SONAME_SFX_FUNCTION, SL_LINKER_FUNCTION are set in configure - they override the lines below
# $(call SONAME_FUNCTION,libfoo,abiversion)
SONAME_FUNCTION ?= $(1).$(SL_LINKER_SUFFIX).$(2)
# $(call SONAME_SFX_FUNCTION,libfoo,abiversion)
SONAME_SFX_FUNCTION ?= $(1)$(LIB_NAME_SUFFIX).$(SL_LINKER_SUFFIX).$(2)
# $(call SL_LINKER_FUNCTION,libfoo,abiversion,libversion)
SL_LINKER_FUNCTION ?= -shared -Wl,-soname,$(call SONAME_FUNCTION,$(notdir $(1)),$(2))

PETSC_VERSION_MAJOR := $(shell awk '/define PETSC_VERSION_MAJOR/{print $$3;}' ./include/petscversion.h)
PETSC_VERSION_MINOR := $(shell awk '/define PETSC_VERSION_MINOR/{print $$3;}' ./include/petscversion.h)
PETSC_VERSION_SUBMINOR := $(shell awk '/define PETSC_VERSION_SUBMINOR/{print $$3;}' ./include/petscversion.h)
PETSC_VERSION_RELEASE := $(shell awk '/define PETSC_VERSION_RELEASE/{print $$3;}' ./include/petscversion.h)

libpetsc_abi_version := $(PETSC_VERSION_MAJOR).$(if $(filter $(PETSC_VERSION_RELEASE), 0 -2 -3 -4 -5),0)$(PETSC_VERSION_MINOR)
libpetsc_lib_version := $(libpetsc_abi_version).$(PETSC_VERSION_SUBMINOR)
soname_function = $(call SONAME_SFX_FUNCTION,$(1),$(libpetsc_abi_version))
libname_function = $(call SONAME_SFX_FUNCTION,$(1),$(libpetsc_lib_version))
absbasename_all = $(basename $(basename $(basename $(basename $(abspath $(1))))))# arch/lib/libpetsc.so.3.8.0 -> /path/to/arch/lib/libpetsc
sl_linker_args = $(call SL_LINKER_FUNCTION,$(call absbasename_all,$@),$(libpetsc_abi_version),$(libpetsc_lib_version))

libpetsc_shared  := $(LIBDIR)/libpetsc$(LIB_NAME_SUFFIX).$(SL_LINKER_SUFFIX)
libpetsc_soname  := $(call soname_function,$(LIBDIR)/libpetsc)
libpetsc_libname := $(call libname_function,$(LIBDIR)/libpetsc)
libpetsc_static  := $(LIBDIR)/libpetsc$(LIB_NAME_SUFFIX).$(AR_LIB_SUFFIX)
libpetscpkgs_shared  := $(foreach pkg, $(pkgs), $(LIBDIR)/libpetsc$(pkg)$(LIB_NAME_SUFFIX).$(SL_LINKER_SUFFIX))
libpetscpkgs_soname  := $(foreach pkg, $(pkgs), $(call soname_function,$(LIBDIR)/libpetsc$(pkg)))
libpetscpkgs_libname := $(foreach pkg, $(pkgs), $(call libname_function,$(LIBDIR)/libpetsc$(pkg)))
libpetscpkgs_static  := $(foreach pkg, $(pkgs_reverse), $(LIBDIR)/libpetsc$(pkg)$(LIB_NAME_SUFFIX).$(AR_LIB_SUFFIX))

ifeq ($(PETSC_WITH_EXTERNAL_LIB),)
  libpetscall_shared  := $(libpetscpkgs_shared)
  libpetscall_soname  := $(libpetscpkgs_soname)
  libpetscall_libname := $(libpetscpkgs_libname)
  libpetscall_static  := $(libpetscpkgs_static)
else
  libpetscall_shared  := $(libpetsc_shared)
  libpetscall_soname  := $(libpetsc_soname)
  libpetscall_libname := $(libpetsc_libname)
  libpetscall_static  := $(libpetsc_static)
endif
libpetscall := $(if $(filter-out no,$(BUILDSHAREDLIB)),$(libpetscall_shared),$(libpetscall_static))

generated      := $(PETSC_ARCH)/lib/petsc/conf/files

libs : $(libpetscall)

.PHONY: libs

.SECONDEXPANSION: # to expand $$(@D)/.DIR

# Test framework includes rules and variables relevant to both build and test
include ./gmakefile.test        # This must be below the all target because it includes rules

$(generated) : $(petscconf) $(petscvariables) config/gmakegen.py
	$(PYTHON) ./config/gmakegen.py --petsc-arch=$(PETSC_ARCH)

# Skip including generated files (which triggers rebuilding them) when we're just going to clean anyway.
ifneq ($(filter-out help clean distclean check info gmakeinfo checkbadSource checkbadFileChange deletefortranbindings fortranbindings alletags etags clangformat checkclangformat fprettify lint shellcheck checkshellcheck get% %build,$(MAKECMDGOALS:clean%=clean)),)
include $(generated)
endif

# implies shared libraries with MS compilers
ifeq ($(PETSC_DLL_EXPORTS),1)
$(OBJDIR)/%.o : CCPPFLAGS+=-Dpetsc_EXPORTS
$(OBJDIR)/%.o : CXXCPPFLAGS+=-Dpetsc_EXPORTS
$(OBJDIR)/%.o : CUDACPPFLAGS+=-Dpetsc_EXPORTS
endif

langs := F F90 cxx c
ifneq ($(CUDAC),)
langs += cu
endif
ifneq ($(HIPC),)
langs += hip.cxx
endif
ifneq ($(SYCLC),)
langs += sycl.cxx
endif
ifneq ($(KOKKOS_LIB),)
langs += kokkos.cxx
endif

concatlang = $(foreach lang, $(langs), $(srcs-$(1).$(lang):%.$(lang)=$(OBJDIR)/%.o))
srcs.o := $(foreach pkg, $(pkgs), $(call concatlang,$(pkg)))
srcs.tidy := $(foreach pkg, $(pkgs), $(srcs-$(pkg).c:%.c=$(OBJDIR)/%.tidy))
concatlangsrc = $(foreach lang, $(langs), $(srcs-$(1).$(lang)))
csrc := $(foreach pkg, $(pkgs),  $(srcs-$(pkg).c))
showcsrc:
	-@echo $(csrc)

define SHARED_RECIPE_DLL
  @$(RM) $@ dllcmd.${PETSC_ARCH}
  @cygpath -w $^ > dllcmd.${PETSC_ARCH}
  $(call quiet,CLINKER) $(sl_linker_args) -o $@ @dllcmd.${PETSC_ARCH} $(PETSC_EXTERNAL_LIB_BASIC)
  @$(RM) dllcmd.${PETSC_ARCH}
endef

define SHARED_RECIPE_ATFILE
  $(file > $@.args,$^)
  $(call quiet,CLINKER) $(sl_linker_args) -o $@ @$@.args $(PETSC_EXTERNAL_LIB_BASIC)
  @$(RM) $@.args
endef

define SHARED_RECIPE_DEFAULT
  $(call quiet,CLINKER) $(sl_linker_args) -o $@ $^ $(PETSC_EXTERNAL_LIB_BASIC)
endef

GMAKE4 = $(if $(findstring 3.99,$(firstword $(sort 3.99 $(MAKE_VERSION)))),1,)
SHARED_RECIPE = $(if $(findstring -LD,$(SL_LINKER_FUNCTION)),$(SHARED_RECIPE_DLL),$(if $(PCC_AT_FILE),$(if $(GMAKE4),$(SHARED_RECIPE_ATFILE),$(SHARED_RECIPE_DEFAULT)),$(SHARED_RECIPE_DEFAULT)))

# with-single-library=1 (default)
$(libpetsc_libname) : $(srcs.o) | $$(@D)/.DIR
	$(SHARED_RECIPE)
ifneq ($(DSYMUTIL),true)
	$(call quiet,DSYMUTIL) $@
endif

$(libpetsc_static) : obj := $(srcs.o)

define ARCHIVE_RECIPE_WIN32FE_LIB
  @$(RM) $@ $@.args
  @cygpath -w $^ > $@.args
  $(call quiet,AR) $(AR_FLAGS) $@ @$@.args
  @$(RM) $@.args
endef

define ARCHIVE_RECIPE_ARGFILE
  @$(RM) $@
  $(file > $@.args,$^)
  $(call quiet,AR) $(AR_FLAGS) $@ @$@.args
  @$(RM) $@.args
  $(call quiet,RANLIB) $@
endef

define ARCHIVE_RECIPE_DEFAULT
  @$(RM) $@
  $(call quiet,AR) $(AR_FLAGS) $@ $^
  $(call quiet,RANLIB) $@
endef

%$(LIB_NAME_SUFFIX).$(AR_LIB_SUFFIX) : $$(obj) | $$(@D)/.DIR
	$(if $(findstring win32fe_lib,$(AR)),$(ARCHIVE_RECIPE_WIN32FE_LIB),$(if $(findstring yes,$(AR_ARGFILE)),$(if $(GMAKE4),$(ARCHIVE_RECIPE_ARGFILE),$(ARCHIVE_RECIPE_DEFAULT)),$(ARCHIVE_RECIPE_DEFAULT)))

# with-single-library=0
libpkg = $(foreach pkg, $1, $(LIBDIR)/libpetsc$(pkg)$(LIB_NAME_SUFFIX).$(SL_LINKER_SUFFIX))
define pkg_template
  $(LIBDIR)/libpetsc$(1)$(LIB_NAME_SUFFIX).$(AR_LIB_SUFFIX)  : $(call concatlang,$(1))
  $(call libname_function,$(LIBDIR)/libpetsc$(1)) : $(call concatlang,$(1))
endef
$(foreach pkg,$(pkgs),$(eval $(call pkg_template,$(pkg))))
$(call libname_function,$(LIBDIR)/libpetscvec)  : libdep := $(call libpkg,sys)
$(call libname_function,$(LIBDIR)/libpetscmat)  : libdep := $(call libpkg,vec sys)
$(call libname_function,$(LIBDIR)/libpetscdm)   : libdep := $(call libpkg,mat vec sys)
$(call libname_function,$(LIBDIR)/libpetscksp)  : libdep := $(call libpkg,dm mat vec sys)
$(call libname_function,$(LIBDIR)/libpetscsnes) : libdep := $(call libpkg,ksp dm mat vec sys)
$(call libname_function,$(LIBDIR)/libpetscts)   : libdep := $(call libpkg,snes ksp dm mat vec sys)
$(call libname_function,$(LIBDIR)/libpetsctao)  : libdep := $(call libpkg,snes ksp dm mat vec sys)
$(call libname_function,$(LIBDIR)/libpetscml)   : libdep := $(call libpkg,tao snes ksp dm mat vec sys)

# The package libraries technically depend on each other (not just in an order-only way), but only
# ABI changes like new or removed symbols requires relinking the dependent libraries.  ABI should
# only occur when a header is changed, which would trigger recompilation and relinking anyway.
# RELINK=1 causes dependent libraries to be relinked anyway.
ifeq ($(RELINK),1)
  libdep_true = $$(libdep)
  libdep_order =
else
  libdep_true =
  libdep_order = $$(libdep)
endif
$(libpetscpkgs_libname) : $(libdep_true) | $(libdep_order) $$(@D)/.DIR
	$(SHARED_RECIPE)
ifneq ($(DSYMUTIL),true)
	$(call quiet,DSYMUTIL) $@
endif

%$(LIB_NAME_SUFFIX).$(SL_LINKER_SUFFIX) : $(call libname_function,%) | $(call soname_function,%)
	@ln -sf $(notdir $<) $@

$(call soname_function,%) : $(call libname_function,%)
	@ln -sf $(notdir $<) $@

.PRECIOUS: $(call soname_function,%)

$(OBJDIR)/%.o : %.sycl.cxx | $$(@D)/.DIR
	$(PETSC_COMPILE.sycl.cxx) $(abspath $<) -o $@

$(OBJDIR)/src/%.o : src/%.c | $$(@D)/.DIR
	$(PETSC_COMPILE.c) $(abspath $<) -o $@

$(OBJDIR)/ftn/%.o : $(PETSC_ARCH)/ftn/%.c | $$(@D)/.DIR
	$(PETSC_COMPILE.c) $(abspath $<) -o $@

$(OBJDIR)/%.o : %.kokkos.cxx | $$(@D)/.DIR
	$(PETSC_COMPILE.kokkos.cxx) $(abspath $<) -o $@

$(OBJDIR)/src/%.o : src/%.cxx | $$(@D)/.DIR
	$(PETSC_COMPILE.cxx) $(abspath $<) -o $@

$(OBJDIR)/ftn/%.o : $(PETSC_ARCH)/ftn/%.cxx | $$(@D)/.DIR
	$(PETSC_COMPILE.cxx) $(abspath $<) -o $@

$(OBJDIR)/%.o : %.hip.cxx | $$(@D)/.DIR
	$(PETSC_COMPILE.hip.cxx) $(abspath $<) -o $@

$(OBJDIR)/%.o : %.cu | $$(@D)/.DIR
	$(PETSC_COMPILE.cu) $(abspath $<) -o $@ # Compile first so that if there is an error, it comes from a normal compile
	@$(PETSC_GENDEPS.cu) $(abspath $<) -o $(@:%.o=%.d) # Generate the dependencies for later

FCMOD = cd
$(OBJDIR)/%.o : %.F | $$(@D)/.DIR
ifeq ($(FC_MODULE_OUTPUT_FLAG),)
	$(call quiet,FCMOD) $(MODDIR) && $(FC) -c $(FC_FLAGS) $(FFLAGS) $(FCPPFLAGS) $(FC_DEPFLAGS) $(abspath $<) -o $(abspath $@)
else
	$(PETSC_COMPILE.F) $(abspath $<) -o $@ $(FC_MODULE_OUTPUT_FLAG)$(MODDIR)
endif
	-@$(GFORTRAN_DEP_CLEANUP)

$(OBJDIR)/%.o : %.F90 | $$(@D)/.DIR
ifeq ($(FC_MODULE_OUTPUT_FLAG),)
	$(call quiet,FCMOD) $(MODDIR) && $(FC) -c $(FC_FLAGS) $(FFLAGS) $(FCPPFLAGS) $(FC_DEPFLAGS) $(abspath $<) -o $(abspath $@)
else
	$(PETSC_COMPILE.F) $(abspath $<) -o $@ $(FC_MODULE_OUTPUT_FLAG)$(MODDIR)
endif
	-@$(GFORTRAN_DEP_CLEANUP)

# Combine with Jacob's massive lint project?
# Only works with ./configure --with-mpi=0 since clang-tidy cannot find MPI include files (love MPI compiler wrappers, the worse thing to come from MPI)
$(OBJDIR)/%.tidy : %.c | $$(@D)/.DIR
	@clang-tidy --checks='clang-diagnostic-*,-clang-analyzer-*,-clang-analyzer-security.insecureAPI.rand,-clang-analyzer-security.insecureAPI.DeprecatedOrUnsafeBufferHandling,clang-analyzer-deadcode.DeadStores,bugprone-too-small-loop-variable'  $(abspath $<) -- ${CCPPFLAGS}

clang-tidy: $(srcs.tidy)

# Hack: manual dependencies on object files
ifeq ($(MPI_IS_MPIUNI),1)
  MPIUNI_MOD := $(MODDIR)/mpiuni.mod
  $(OBJDIR)/src/sys/mpiuni/ftn-src/somempifort.o : $(OBJDIR)/src/sys/mpiuni/ftn-mod/mpiunimod.o
endif
$(OBJDIR)/src/sys/ftn-mod/petscsysmod.o   : $(if $(MPIUNI_MOD),$(OBJDIR)/src/sys/mpiuni/ftn-mod/mpiunimod.o)
$(OBJDIR)/src/vec/ftn-mod/petscvecmod.o   : $(OBJDIR)/src/sys/ftn-mod/petscsysmod.o
$(OBJDIR)/src/mat/ftn-mod/petscmatmod.o   : $(OBJDIR)/src/vec/ftn-mod/petscvecmod.o
$(OBJDIR)/src/dm/ftn-mod/petscdmmod.o     : $(OBJDIR)/src/mat/ftn-mod/petscmatmod.o
$(OBJDIR)/src/ksp/ftn-mod/petsckspmod.o   : $(OBJDIR)/src/dm/ftn-mod/petscdmmod.o
$(OBJDIR)/src/snes/ftn-mod/petscsnesmod.o : $(OBJDIR)/src/ksp/ftn-mod/petsckspmod.o
$(OBJDIR)/src/ts/ftn-mod/petsctsmod.o     : $(OBJDIR)/src/snes/ftn-mod/petscsnesmod.o
$(OBJDIR)/src/tao/ftn-mod/petsctaomod.o   : $(OBJDIR)/src/ts/ftn-mod/petsctsmod.o
$(OBJDIR)/src/ml/ftn-mod/petscmlmod.o   : $(OBJDIR)/src/tao/ftn-mod/petsctaomod.o
# Fortran code depends on modules
$(OBJDIR)/src/sys/ftn-src/somefort.o             : $(OBJDIR)/src/sys/ftn-mod/petscsysmod.o
$(OBJDIR)/src/sys/objects/ftn-src/optionenum.o   : $(OBJDIR)/src/sys/ftn-mod/petscsysmod.o
$(OBJDIR)/src/sys/classes/bag/ftn-src/bagenum.o  : $(OBJDIR)/src/sys/ftn-mod/petscsysmod.o

# all sources should get recompiled when petscvariables changes (i.e when configure is rerun or when petscvariables is manually edited.)
$(srcs.o) : $(petscvariables)

.PHONY: clean all print clang-tidy

clean:
	${RM} -r $(OBJDIR) $(LIBDIR)/libpetsc* $(MODDIR)/petsc*.mod $(MPIUNI_MOD) $(generated)

# make print VAR=the-variable
print:
	$(info $($(VAR)))
	@true

allobj.d := $(srcs.o:%.o=%.d)
# Tell make that allobj.d are all up to date. Without this, the include
# below has quadratic complexity, taking more than one second for a
# do-nothing build of PETSc (much worse for larger projects)
$(allobj.d) : ;

gmakeinfo:
	-@echo "=========================================="
	-@echo " "
	-@echo "See documentation/faq.html and documentation/bugreporting.html"
	-@echo "for help with installation problems. Please send EVERYTHING"
	-@echo "printed out below when reporting problems. Please check the"
	-@echo "mailing list archives and consider subscribing."
	-@echo " "
	-@echo "  https://petsc.org/release/community/mailing/"
	-@echo " "
	-@echo "=========================================="
	-@echo Starting make run on `hostname` at `date +'%a, %d %b %Y %H:%M:%S %z'`
	-@echo Machine characteristics: `uname -a`
	-@echo "-----------------------------------------"
	-@echo "Using PETSc directory: ${PETSC_DIR}"
	-@echo "Using PETSc arch: ${PETSC_ARCH}"
	-@echo "-----------------------------------------"
	-@grep "define PETSC_VERSION" ${PETSC_DIR}/include/petscversion.h | ${SED} "s/........//" | head -n 7
	-@echo "-----------------------------------------"
	-@echo "Using configure Options: ${CONFIGURE_OPTIONS}"
	-@echo "Using configuration flags:"
	-@grep "#define " ${PETSCCONF_H} | tail -n +2
	-@echo "-----------------------------------------"
	-@echo "Using C compile: ${PETSC_CCOMPILE_SINGLE}"
	-@if [ "${MPICC_SHOW}" != "" ]; then\
             printf "mpicc -show: %b\n" "${MPICC_SHOW}";\
          fi;\
        printf  "C compiler version: %b\n" "${C_VERSION}";\
        if [ "${CXX}" != "" ]; then\
        echo "Using C++ compile: ${PETSC_CXXCOMPILE_SINGLE}";\
        if [ "${MPICXX_SHOW}" != "" ]; then\
               printf "mpicxx -show: %b\n" "${MPICXX_SHOW}";\
            fi;\
            printf  "C++ compiler version: %b\n" "${Cxx_VERSION}";\
          fi
	-@if [ "${FC}" != "" ]; then\
	   echo "Using Fortran compile: ${PETSC_FCOMPILE_SINGLE}";\
           if [ "${MPIFC_SHOW}" != "" ]; then\
             printf "mpif90 -show: %b\n" "${MPIFC_SHOW}";\
           fi;\
             printf  "Fortran compiler version: %b\n" "${FC_VERSION}";\
         fi
	-@if [ "${CUDAC}" != "" ]; then\
	   echo "Using CUDA compile: ${PETSC_CUCOMPILE_SINGLE}";\
         fi
	-@if [ "${HIPC}" != "" ]; then\
	   echo "Using HIP compile: ${PETSC_HIPCOMPILE_SINGLE}";\
         fi
	-@if [ "${SYCLC}" != "" ]; then\
	   echo "Using SYCL compile: ${PETSC_SYCLCOMPILE_SINGLE}";\
         fi
	-@if [ "${CLANGUAGE}" = "CXX" ]; then\
           echo "Using C++ compiler to compile PETSc";\
        fi
	-@echo "-----------------------------------------"
	-@echo "Using C/C++ linker: ${PCC_LINKER}"
	-@echo "Using C/C++ flags: ${PCC_LINKER_FLAGS}"
	-@if [ "${FC}" != "" ]; then\
	   echo "Using Fortran linker: ${FC_LINKER}";\
	   echo "Using Fortran flags: ${FC_LINKER_FLAGS}";\
         fi
	-@echo "-----------------------------------------"
	-@echo "Using system modules: ${LOADEDMODULES}"
	-@if [ "${MPI_IS_MPIUNI}" = "1" ]; then\
           echo Using mpi.h: mpiuni;\
        else\
           TESTDIR=`mktemp -q -d -t petscmpi-XXXXXXXX` &&\
           echo '#include <mpi.h>' > $${TESTDIR}/mpitest.c &&\
           BUF=`${CPP} ${CCPPFLAGS} $${TESTDIR}/mpitest.c |grep 'mpi\.h' | ( head -1 ; cat > /dev/null )` &&\
           echo Using mpi.h: $${BUF}; ${RM} -rf $${TESTDIR};\
        fi
	-@echo "-----------------------------------------"
	-@echo "Using libraries: ${PETSC_LIB}"
	-@echo "------------------------------------------"
	-@echo "Using mpiexec: ${MPIEXEC}"
	-@echo "------------------------------------------"
	-@echo "Using MAKE: ${MAKE}"
	-@echo "Default MAKEFLAGS: MAKE_NP:${MAKE_NP} MAKE_LOAD:${MAKE_LOAD} MAKEFLAGS:${MAKEFLAGS}"
	-@echo "=========================================="

-include $(allobj.d)