!># Build target handling !> !> This module handles the construction of the build target list !> from the sources list (`[[targets_from_sources]]`), the !> resolution of module-dependencies between build targets !> (`[[resolve_module_dependencies]]`), and the enumeration of !> objects required for link targets (`[[resolve_target_linking]]`). !> !> A build target (`[[build_target_t]]`) is a file to be generated !> by the backend (compilation and linking). !> !> @note The current implementation is ignorant to the existence of !> module files (`.mod`,`.smod`). Dependencies arising from modules !> are based on the corresponding object files (`.o`) only. !> !> For more information, please read the documentation for the procedures: !> !> - `[[build_target_list]]` !> - `[[resolve_module_dependencies]]` !> !>### Enumerations !> !> __Target type:__ `FPM_TARGET_*` !> Describes the type of build target — determines backend build rules !> module fpm_targets use iso_fortran_env, only: int64 use fpm_error, only: error_t, fatal_error, fpm_stop use fpm_model use fpm_compiler, only : compiler_t use fpm_environment, only: get_os_type, OS_WINDOWS, OS_MACOS use fpm_filesystem, only: dirname, join_path, canon_path use fpm_strings, only: string_t, operator(.in.), string_cat, fnv_1a, resize, lower, str_ends_with use fpm_compiler, only: get_macros use fpm_sources, only: get_exe_name_with_suffix use fpm_manifest_preprocess, only: preprocess_config_t implicit none private public FPM_TARGET_UNKNOWN, FPM_TARGET_EXECUTABLE, & FPM_TARGET_ARCHIVE, FPM_TARGET_OBJECT, & FPM_TARGET_C_OBJECT, FPM_TARGET_CPP_OBJECT, & FPM_TARGET_NAME public build_target_t, build_target_ptr public targets_from_sources, resolve_module_dependencies public add_target, add_dependency public filter_library_targets, filter_executable_targets, filter_modules !> Target type is unknown (ignored) integer, parameter :: FPM_TARGET_UNKNOWN = -1 !> Target type is executable integer, parameter :: FPM_TARGET_EXECUTABLE = 1 !> Target type is library archive integer, parameter :: FPM_TARGET_ARCHIVE = 2 !> Target type is compiled object integer, parameter :: FPM_TARGET_OBJECT = 3 !> Target type is c compiled object integer, parameter :: FPM_TARGET_C_OBJECT = 4 !> Target type is cpp compiled object integer, parameter :: FPM_TARGET_CPP_OBJECT = 5 !> Wrapper type for constructing arrays of `[[build_target_t]]` pointers type build_target_ptr type(build_target_t), pointer :: ptr => null() end type build_target_ptr !> Type describing a generated build target type build_target_t !> File path of build target object relative to cwd character(:), allocatable :: output_file !> File path of build target object relative to output_dir character(:), allocatable :: output_name !> File path of output directory character(:), allocatable :: output_dir !> File path of build log file relative to cwd character(:), allocatable :: output_log_file !> Name of parent package character(:), allocatable :: package_name !> Primary source for this build target type(srcfile_t), allocatable :: source !> Resolved build dependencies type(build_target_ptr), allocatable :: dependencies(:) !> Target type integer :: target_type = FPM_TARGET_UNKNOWN !> Native libraries to link against type(string_t), allocatable :: link_libraries(:) !> Objects needed to link this target type(string_t), allocatable :: link_objects(:) !> Link flags for this build target character(:), allocatable :: link_flags !> Compile flags for this build target character(:), allocatable :: compile_flags !> Flag set when first visited to check for circular dependencies logical :: touched = .false. !> Flag set if build target is sorted for building logical :: sorted = .false. !> Flag set if build target will be skipped (not built) logical :: skip = .false. !> Language features type(fortran_features_t) :: features !> Targets in the same schedule group are guaranteed to be independent integer :: schedule = -1 !> Previous source file hash integer(int64), allocatable :: digest_cached !> List of macros type(string_t), allocatable :: macros(:) !> Version number character(:), allocatable :: version end type build_target_t contains !> Target type name pure function FPM_TARGET_NAME(type) result(msg) integer, intent(in) :: type character(:), allocatable :: msg select case (type) case (FPM_TARGET_ARCHIVE); msg = 'Archive' case (FPM_TARGET_CPP_OBJECT); msg = 'C++ object' case (FPM_TARGET_C_OBJECT); msg = 'C Object' case (FPM_TARGET_EXECUTABLE); msg = 'Executable' case (FPM_TARGET_OBJECT); msg = 'Object' case default; msg = 'Unknown' end select end function FPM_TARGET_NAME !> High-level wrapper to generate build target information subroutine targets_from_sources(targets,model,prune,error) !> The generated list of build targets type(build_target_ptr), intent(out), allocatable :: targets(:) !> The package model from which to construct the target list type(fpm_model_t), intent(inout), target :: model !> Enable tree-shaking/pruning of module dependencies logical, intent(in) :: prune !> Error structure type(error_t), intent(out), allocatable :: error call build_target_list(targets,model) call collect_exe_link_dependencies(targets) call resolve_module_dependencies(targets,model%external_modules,error) if (allocated(error)) return if (prune) then call prune_build_targets(targets,root_package=model%package_name) end if call resolve_target_linking(targets,model) end subroutine targets_from_sources !> Constructs a list of build targets from a list of source files !> !>### Source-target mapping !> !> One compiled object target (`FPM_TARGET_OBJECT`) is generated for each !> non-executable source file (`FPM_UNIT_MODULE`,`FPM_UNIT_SUBMODULE`, !> `FPM_UNIT_SUBPROGRAM`,`FPM_UNIT_CSOURCE`). !> !> If any source file has scope `FPM_SCOPE_LIB` (*i.e.* there are library sources) !> then the first target in the target list will be a library archive target !> (`FPM_TARGET_ARCHIVE`). The archive target will have a dependency on every !> compiled object target corresponding to a library source file. !> !> One compiled object target (`FPM_TARGET_OBJECT`) and one executable target (`FPM_TARGET_EXECUTABLE`) is !> generated for each exectuable source file (`FPM_UNIT_PROGRAM`). The exectuble target !> always has a dependency on the corresponding compiled object target. If there !> is a library, then the executable target has an additional dependency on the library !> archive target. !> subroutine build_target_list(targets,model) !> The generated list of build targets type(build_target_ptr), intent(out), allocatable :: targets(:) !> The package model from which to construct the target list type(fpm_model_t), intent(inout), target :: model integer :: i, j, n_source, exe_type character(:), allocatable :: exe_dir, compile_flags logical :: with_lib ! Initialize targets allocate(targets(0)) ! Check for empty build (e.g. header-only lib) n_source = sum([(size(model%packages(j)%sources), & j=1,size(model%packages))]) if (n_source < 1) return with_lib = any([((model%packages(j)%sources(i)%unit_scope == FPM_SCOPE_LIB, & i=1,size(model%packages(j)%sources)), & j=1,size(model%packages))]) if (with_lib) call add_target(targets,package=model%package_name,type = FPM_TARGET_ARCHIVE,& output_name = join_path(& model%package_name,'lib'//model%package_name//'.a')) do j=1,size(model%packages) associate(sources=>model%packages(j)%sources) do i=1,size(sources) if (.not. model%include_tests) then if (sources(i)%unit_scope == FPM_SCOPE_TEST) cycle end if select case (sources(i)%unit_type) case (FPM_UNIT_MODULE,FPM_UNIT_SUBMODULE,FPM_UNIT_SUBPROGRAM,FPM_UNIT_CSOURCE) call add_target(targets,package=model%packages(j)%name,source = sources(i), & type = merge(FPM_TARGET_C_OBJECT,FPM_TARGET_OBJECT,& sources(i)%unit_type==FPM_UNIT_CSOURCE), & output_name = get_object_name(sources(i)), & features = model%packages(j)%features, & preprocess = model%packages(j)%preprocess, & version = model%packages(j)%version) if (with_lib .and. sources(i)%unit_scope == FPM_SCOPE_LIB) then ! Archive depends on object call add_dependency(targets(1)%ptr, targets(size(targets))%ptr) end if case (FPM_UNIT_CPPSOURCE) call add_target(targets,package=model%packages(j)%name,source = sources(i), & type = FPM_TARGET_CPP_OBJECT, & output_name = get_object_name(sources(i)), & preprocess = model%packages(j)%preprocess, & version = model%packages(j)%version) if (with_lib .and. sources(i)%unit_scope == FPM_SCOPE_LIB) then ! Archive depends on object call add_dependency(targets(1)%ptr, targets(size(targets))%ptr) end if !> Add stdc++ as a linker flag. If not already there. if (.not. ("stdc++" .in. model%link_libraries)) then if (get_os_type() == OS_MACOS) then model%link_libraries = [model%link_libraries, string_t("c++")] else model%link_libraries = [model%link_libraries, string_t("stdc++")] end if end if case (FPM_UNIT_PROGRAM) if (str_ends_with(lower(sources(i)%file_name), [".c"])) then exe_type = FPM_TARGET_C_OBJECT else if (str_ends_with(lower(sources(i)%file_name), [".cpp", ".cc "])) then exe_type = FPM_TARGET_CPP_OBJECT else ! Default to a Fortran object exe_type = FPM_TARGET_OBJECT end if call add_target(targets,package=model%packages(j)%name,type = exe_type,& output_name = get_object_name(sources(i)), & source = sources(i), & features = model%packages(j)%features, & preprocess = model%packages(j)%preprocess & ) if (sources(i)%unit_scope == FPM_SCOPE_APP) then exe_dir = 'app' else if (sources(i)%unit_scope == FPM_SCOPE_EXAMPLE) then exe_dir = 'example' else exe_dir = 'test' end if call add_target(targets,package=model%packages(j)%name,type = FPM_TARGET_EXECUTABLE,& link_libraries = sources(i)%link_libraries, & output_name = join_path(exe_dir,get_exe_name_with_suffix(sources(i)))) associate(target => targets(size(targets))%ptr) ! Linker-only flags are necessary on some compilers for codes with non-Fortran main select case (exe_type) case (FPM_TARGET_C_OBJECT) call model%compiler%get_main_flags("c",compile_flags) case (FPM_TARGET_CPP_OBJECT) call model%compiler%get_main_flags("c++",compile_flags) case default compile_flags = "" end select target%compile_flags = target%compile_flags//' '//compile_flags ! Executable depends on object call add_dependency(target, targets(size(targets)-1)%ptr) if (with_lib) then ! Executable depends on library call add_dependency(target, targets(1)%ptr) end if endassociate end select end do end associate end do contains function get_object_name(source) result(object_file) ! Generate object target path from source name and model params ! ! type(srcfile_t), intent(in) :: source character(:), allocatable :: object_file integer :: i character(1), parameter :: filesep = '/' object_file = canon_path(source%file_name) ! Convert any remaining directory separators to underscores i = index(object_file,filesep) do while(i > 0) object_file(i:i) = '_' i = index(object_file,filesep) end do object_file = join_path(model%package_name,object_file)//'.o' end function get_object_name end subroutine build_target_list !> Add non-library non-module dependencies for executable targets !> !> Executable targets will link to any non-program non-module source files that !> are in the same directory or in a subdirectory. !> !> (Note: Fortran module dependencies are handled separately in !> `resolve_module_dependencies` and `resolve_target_linking`.) !> subroutine collect_exe_link_dependencies(targets) type(build_target_ptr), intent(inout) :: targets(:) integer :: i, j character(:), allocatable :: exe_source_dir ! Add non-module dependencies for executables do j=1,size(targets) if (targets(j)%ptr%target_type == FPM_TARGET_EXECUTABLE) then do i=1,size(targets) if (i == j) cycle associate(exe => targets(j)%ptr, dep => targets(i)%ptr) exe_source_dir = dirname(exe%dependencies(1)%ptr%source%file_name) if (allocated(dep%source)) then if (dep%source%unit_scope /= FPM_SCOPE_LIB .and. & dep%source%unit_type /= FPM_UNIT_PROGRAM .and. & dep%source%unit_type /= FPM_UNIT_MODULE .and. & index(dirname(dep%source%file_name), exe_source_dir) == 1) then call add_dependency(exe, dep) end if end if end associate end do end if end do end subroutine collect_exe_link_dependencies !> Allocate a new target and append to target list subroutine add_target(targets, package, type, output_name, source, link_libraries, & & features, preprocess, version) type(build_target_ptr), allocatable, intent(inout) :: targets(:) character(*), intent(in) :: package integer, intent(in) :: type character(*), intent(in) :: output_name type(srcfile_t), intent(in), optional :: source type(string_t), intent(in), optional :: link_libraries(:) type(fortran_features_t), intent(in), optional :: features type(preprocess_config_t), intent(in), optional :: preprocess character(*), intent(in), optional :: version integer :: i type(build_target_t), pointer :: new_target if (.not.allocated(targets)) allocate(targets(0)) ! Check for duplicate outputs do i=1,size(targets) if (targets(i)%ptr%output_name == output_name) then write(*,*) 'Error while building target list: duplicate output object "',& output_name,'"' if (present(source)) write(*,*) ' Source file: "',source%file_name,'"' call fpm_stop(1,' ') end if end do allocate(new_target) new_target%target_type = type new_target%output_name = output_name new_target%package_name = package if (present(source)) new_target%source = source if (present(link_libraries)) new_target%link_libraries = link_libraries if (present(features)) new_target%features = features if (present(preprocess)) then if (allocated(preprocess%macros)) new_target%macros = preprocess%macros endif if (present(version)) new_target%version = version allocate(new_target%dependencies(0)) targets = [targets, build_target_ptr(new_target)] end subroutine add_target !> Add pointer to dependeny in target%dependencies subroutine add_dependency(target, dependency) type(build_target_t), intent(inout) :: target type(build_target_t) , intent(in), target :: dependency target%dependencies = [target%dependencies, build_target_ptr(dependency)] end subroutine add_dependency !> Add dependencies to source-based targets (`FPM_TARGET_OBJECT`) !> based on any modules used by the corresponding source file. !> !>### Source file scoping !> !> Source files are assigned a scope of either `FPM_SCOPE_LIB`, !> `FPM_SCOPE_APP` or `FPM_SCOPE_TEST`. The scope controls which !> modules may be used by the source file: !> !> - Library sources (`FPM_SCOPE_LIB`) may only use modules !> also with library scope. This includes library modules !> from dependencies. !> !> - Executable sources (`FPM_SCOPE_APP`,`FPM_SCOPE_TEST`) may use !> library modules (including dependencies) as well as any modules !> corresponding to source files in the same directory or a !> subdirectory of the executable source file. !> !> @warning If a module used by a source file cannot be resolved to !> a source file in the package of the correct scope, then a __fatal error__ !> is returned by the procedure and model construction fails. !> subroutine resolve_module_dependencies(targets,external_modules,error) type(build_target_ptr), intent(inout), target :: targets(:) type(string_t), intent(in) :: external_modules(:) type(error_t), allocatable, intent(out) :: error type(build_target_ptr) :: dep integer :: i, j do i=1,size(targets) if (.not.allocated(targets(i)%ptr%source)) cycle do j=1,size(targets(i)%ptr%source%modules_used) if (targets(i)%ptr%source%modules_used(j)%s .in. targets(i)%ptr%source%modules_provided) then ! Dependency satisfied in same file, skip cycle end if if (targets(i)%ptr%source%modules_used(j)%s .in. external_modules) then ! Dependency satisfied in system-installed module cycle end if if (any(targets(i)%ptr%source%unit_scope == & [FPM_SCOPE_APP, FPM_SCOPE_EXAMPLE, FPM_SCOPE_TEST])) then dep%ptr => & find_module_dependency(targets,targets(i)%ptr%source%modules_used(j)%s, & include_dir = dirname(targets(i)%ptr%source%file_name)) else dep%ptr => & find_module_dependency(targets,targets(i)%ptr%source%modules_used(j)%s) end if if (.not.associated(dep%ptr)) then call fatal_error(error, & 'Unable to find source for module dependency: "' // & targets(i)%ptr%source%modules_used(j)%s // & '" used by "'//targets(i)%ptr%source%file_name//'"') return end if call add_dependency(targets(i)%ptr, dep%ptr) end do end do end subroutine resolve_module_dependencies function find_module_dependency(targets,module_name,include_dir) result(target_ptr) ! Find a module dependency in the library or a dependency library ! ! 'include_dir' specifies an allowable non-library search directory ! (Used for executable dependencies) ! type(build_target_ptr), intent(in), target :: targets(:) character(*), intent(in) :: module_name character(*), intent(in), optional :: include_dir type(build_target_t), pointer :: target_ptr integer :: k, l target_ptr => NULL() do k=1,size(targets) if (.not.allocated(targets(k)%ptr%source)) cycle do l=1,size(targets(k)%ptr%source%modules_provided) if (module_name == targets(k)%ptr%source%modules_provided(l)%s) then select case(targets(k)%ptr%source%unit_scope) case (FPM_SCOPE_LIB, FPM_SCOPE_DEP) target_ptr => targets(k)%ptr exit case default if (present(include_dir)) then if (index(dirname(targets(k)%ptr%source%file_name), include_dir) == 1) then ! source file is within the include_dir or a subdirectory target_ptr => targets(k)%ptr exit end if end if end select end if end do end do end function find_module_dependency !> Perform tree-shaking to remove unused module targets subroutine prune_build_targets(targets, root_package) !> Build target list to prune type(build_target_ptr), intent(inout), allocatable :: targets(:) !> Name of root package character(*), intent(in) :: root_package integer :: i, j, nexec type(string_t), allocatable :: modules_used(:) logical :: exclude_target(size(targets)) logical, allocatable :: exclude_from_archive(:) if (size(targets) < 1) then return end if nexec = 0 allocate(modules_used(0)) ! Enumerate modules used by executables, non-module subprograms and their dependencies do i=1,size(targets) if (targets(i)%ptr%target_type == FPM_TARGET_EXECUTABLE) then nexec = nexec + 1 call collect_used_modules(targets(i)%ptr) elseif (allocated(targets(i)%ptr%source)) then if (targets(i)%ptr%source%unit_type == FPM_UNIT_SUBPROGRAM) then call collect_used_modules(targets(i)%ptr) end if end if end do ! If there aren't any executables, then prune ! based on modules used in root package if (nexec < 1) then do i=1,size(targets) if (targets(i)%ptr%package_name == root_package .and. & targets(i)%ptr%target_type /= FPM_TARGET_ARCHIVE) then call collect_used_modules(targets(i)%ptr) end if end do end if call reset_target_flags(targets) exclude_target(:) = .false. ! Exclude purely module targets if they are not used anywhere do i=1,size(targets) associate(target=>targets(i)%ptr) if (allocated(target%source)) then if (target%source%unit_type == FPM_UNIT_MODULE) then exclude_target(i) = .true. target%skip = .true. do j=1,size(target%source%modules_provided) if (target%source%modules_provided(j)%s .in. modules_used) then exclude_target(i) = .false. target%skip = .false. end if end do elseif (target%source%unit_type == FPM_UNIT_SUBMODULE) then ! Remove submodules if their parents are not used exclude_target(i) = .true. target%skip = .true. do j=1,size(target%source%parent_modules) if (target%source%parent_modules(j)%s .in. modules_used) then exclude_target(i) = .false. target%skip = .false. end if end do end if end if ! (If there aren't any executables then we only prune modules from dependencies) if (nexec < 1 .and. target%package_name == root_package) then exclude_target(i) = .false. target%skip = .false. end if end associate end do targets = pack(targets,.not.exclude_target) ! Remove unused targets from archive dependency list if (targets(1)%ptr%target_type == FPM_TARGET_ARCHIVE) then associate(archive=>targets(1)%ptr) allocate(exclude_from_archive(size(archive%dependencies))) exclude_from_archive(:) = .false. do i=1,size(archive%dependencies) if (archive%dependencies(i)%ptr%skip) then exclude_from_archive(i) = .true. end if end do archive%dependencies = pack(archive%dependencies,.not.exclude_from_archive) end associate end if contains !> Recursively collect which modules are actually used recursive subroutine collect_used_modules(target) type(build_target_t), intent(inout) :: target integer :: j, k if (target%touched) then return else target%touched = .true. end if if (allocated(target%source)) then ! Add modules from this target and from any of it's children submodules do j=1,size(target%source%modules_provided) if (.not.(target%source%modules_provided(j)%s .in. modules_used)) then modules_used = [modules_used, target%source%modules_provided(j)] end if ! Recurse into child submodules do k=1,size(targets) if (allocated(targets(k)%ptr%source)) then if (targets(k)%ptr%source%unit_type == FPM_UNIT_SUBMODULE) then if (target%source%modules_provided(j)%s .in. targets(k)%ptr%source%parent_modules) then call collect_used_modules(targets(k)%ptr) end if end if end if end do end do end if ! Recurse into dependencies do j=1,size(target%dependencies) if (target%dependencies(j)%ptr%target_type /= FPM_TARGET_ARCHIVE) then call collect_used_modules(target%dependencies(j)%ptr) end if end do end subroutine collect_used_modules !> Reset target flags after recursive search subroutine reset_target_flags(targets) type(build_target_ptr), intent(inout) :: targets(:) integer :: i do i=1,size(targets) targets(i)%ptr%touched = .false. end do end subroutine reset_target_flags end subroutine prune_build_targets !> Construct the linker flags string for each target !> `target%link_flags` includes non-library objects and library flags !> subroutine resolve_target_linking(targets, model) type(build_target_ptr), intent(inout), target :: targets(:) type(fpm_model_t), intent(in) :: model integer :: i character(:), allocatable :: global_link_flags, local_link_flags character(:), allocatable :: global_include_flags if (size(targets) == 0) return global_link_flags = "" if (allocated(model%link_libraries)) then if (size(model%link_libraries) > 0) then global_link_flags = model%compiler%enumerate_libraries(global_link_flags, model%link_libraries) end if end if allocate(character(0) :: global_include_flags) if (allocated(model%include_dirs)) then if (size(model%include_dirs) > 0) then global_include_flags = global_include_flags // & & " -I" // string_cat(model%include_dirs," -I") end if end if do i=1,size(targets) associate(target => targets(i)%ptr) ! If the main program is a C/C++ one, some compilers require additional linking flags, see ! https://stackoverflow.com/questions/36221612/p3dfft-compilation-ifort-compiler-error-multiple-definiton-of-main ! In this case, compile_flags were already allocated if (.not.allocated(target%compile_flags)) allocate(character(len=0) :: target%compile_flags) target%compile_flags = target%compile_flags//' ' select case (target%target_type) case (FPM_TARGET_C_OBJECT) target%compile_flags = target%compile_flags//model%c_compile_flags case (FPM_TARGET_CPP_OBJECT) target%compile_flags = target%compile_flags//model%cxx_compile_flags case default target%compile_flags = target%compile_flags//model%fortran_compile_flags & & // get_feature_flags(model%compiler, target%features) end select !> Get macros as flags. target%compile_flags = target%compile_flags // get_macros(model%compiler%id, & target%macros, & target%version) if (len(global_include_flags) > 0) then target%compile_flags = target%compile_flags//global_include_flags end if target%output_dir = get_output_dir(model%build_prefix, target%compile_flags) target%output_file = join_path(target%output_dir, target%output_name) target%output_log_file = join_path(target%output_dir, target%output_name)//'.log' end associate end do call add_include_build_dirs(model, targets) do i=1,size(targets) associate(target => targets(i)%ptr) allocate(target%link_objects(0)) if (target%target_type == FPM_TARGET_ARCHIVE) then global_link_flags = target%output_file // global_link_flags call get_link_objects(target%link_objects,target,is_exe=.false.) allocate(character(0) :: target%link_flags) else if (target%target_type == FPM_TARGET_EXECUTABLE) then call get_link_objects(target%link_objects,target,is_exe=.true.) local_link_flags = "" if (allocated(model%link_flags)) local_link_flags = model%link_flags target%link_flags = model%link_flags//" "//string_cat(target%link_objects," ") if (allocated(target%link_libraries)) then if (size(target%link_libraries) > 0) then target%link_flags = model%compiler%enumerate_libraries(target%link_flags, target%link_libraries) local_link_flags = model%compiler%enumerate_libraries(local_link_flags, target%link_libraries) end if end if target%link_flags = target%link_flags//" "//global_link_flags target%output_dir = get_output_dir(model%build_prefix, & & target%compile_flags//local_link_flags) target%output_file = join_path(target%output_dir, target%output_name) target%output_log_file = join_path(target%output_dir, target%output_name)//'.log' end if end associate end do contains !> Wrapper to build link object list !> !> For libraries: just list dependency objects of lib target !> !> For executables: need to recursively discover non-library !> dependency objects. (i.e. modules in same dir as program) !> recursive subroutine get_link_objects(link_objects,target,is_exe) type(string_t), intent(inout), allocatable :: link_objects(:) type(build_target_t), intent(in) :: target logical, intent(in) :: is_exe integer :: i type(string_t) :: temp_str if (.not.allocated(target%dependencies)) return do i=1,size(target%dependencies) associate(dep => target%dependencies(i)%ptr) if (.not.allocated(dep%source)) cycle ! Skip library dependencies for executable targets ! since the library archive will always be linked if (is_exe.and.(dep%source%unit_scope == FPM_SCOPE_LIB)) cycle ! Skip if dependency object already listed if (dep%output_file .in. link_objects) cycle ! Add dependency object file to link object list temp_str%s = dep%output_file link_objects = [link_objects, temp_str] ! For executable objects, also need to include non-library ! dependencies from dependencies (recurse) if (is_exe) call get_link_objects(link_objects,dep,is_exe=.true.) end associate end do end subroutine get_link_objects end subroutine resolve_target_linking subroutine add_include_build_dirs(model, targets) type(fpm_model_t), intent(in) :: model type(build_target_ptr), intent(inout), target :: targets(:) integer :: i type(string_t), allocatable :: build_dirs(:) type(string_t) :: temp allocate(build_dirs(0)) do i = 1, size(targets) associate(target => targets(i)%ptr) if (target%target_type /= FPM_TARGET_OBJECT) cycle if (target%output_dir .in. build_dirs) cycle temp%s = target%output_dir build_dirs = [build_dirs, temp] end associate end do do i = 1, size(targets) associate(target => targets(i)%ptr) if (target%target_type /= FPM_TARGET_OBJECT) cycle target%compile_flags = target%compile_flags // & " " // model%compiler%get_module_flag(target%output_dir) // & " -I" // string_cat(build_dirs, " -I") end associate end do end subroutine add_include_build_dirs function get_output_dir(build_prefix, args) result(path) character(len=*), intent(in) :: build_prefix character(len=*), intent(in) :: args character(len=:), allocatable :: path character(len=16) :: build_hash write(build_hash, '(z16.16)') fnv_1a(args) path = build_prefix//"_"//build_hash end function get_output_dir subroutine filter_library_targets(targets, list) type(build_target_ptr), intent(in) :: targets(:) type(string_t), allocatable, intent(out) :: list(:) integer :: i, n n = 0 call resize(list) do i = 1, size(targets) if (targets(i)%ptr%target_type == FPM_TARGET_ARCHIVE) then if (n >= size(list)) call resize(list) n = n + 1 list(n)%s = targets(i)%ptr%output_file end if end do call resize(list, n) end subroutine filter_library_targets subroutine filter_executable_targets(targets, scope, list) type(build_target_ptr), intent(in) :: targets(:) integer, intent(in) :: scope type(string_t), allocatable, intent(out) :: list(:) integer :: i, n n = 0 call resize(list) do i = 1, size(targets) if (is_executable_target(targets(i)%ptr, scope)) then if (n >= size(list)) call resize(list) n = n + 1 list(n)%s = targets(i)%ptr%output_file end if end do call resize(list, n) end subroutine filter_executable_targets elemental function is_executable_target(target_ptr, scope) result(is_exe) type(build_target_t), intent(in) :: target_ptr integer, intent(in) :: scope logical :: is_exe is_exe = target_ptr%target_type == FPM_TARGET_EXECUTABLE .and. & allocated(target_ptr%dependencies) if (is_exe) then is_exe = target_ptr%dependencies(1)%ptr%source%unit_scope == scope end if end function is_executable_target subroutine filter_modules(targets, list) type(build_target_ptr), intent(in) :: targets(:) type(string_t), allocatable, intent(out) :: list(:) integer :: i, j, n n = 0 call resize(list) do i = 1, size(targets) associate(target => targets(i)%ptr) if (.not.allocated(target%source)) cycle if (target%source%unit_type == FPM_UNIT_SUBMODULE) cycle if (n + size(target%source%modules_provided) >= size(list)) call resize(list) do j = 1, size(target%source%modules_provided) n = n + 1 list(n)%s = join_path(target%output_dir, & target%source%modules_provided(j)%s) end do end associate end do call resize(list, n) end subroutine filter_modules function get_feature_flags(compiler, features) result(flags) type(compiler_t), intent(in) :: compiler type(fortran_features_t), intent(in) :: features character(:), allocatable :: flags flags = "" if (features%implicit_typing) then flags = flags // compiler%get_feature_flag("implicit-typing") else flags = flags // compiler%get_feature_flag("no-implicit-typing") end if if (features%implicit_external) then flags = flags // compiler%get_feature_flag("implicit-external") else flags = flags // compiler%get_feature_flag("no-implicit-external") end if if (allocated(features%source_form)) then flags = flags // compiler%get_feature_flag(features%source_form//"-form") end if end function get_feature_flags end module fpm_targets