fpm_targets Module

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 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


Uses


Variables

Type Visibility Attributes Name Initial
integer, public, parameter :: FPM_TARGET_ARCHIVE = 2

Target type is library archive
integer, public, parameter :: FPM_TARGET_CPP_OBJECT = 5

Target type is cpp compiled object
integer, public, parameter :: FPM_TARGET_C_OBJECT = 4

Target type is c compiled object
integer, public, parameter :: FPM_TARGET_EXECUTABLE = 1

Target type is executable
integer, public, parameter :: FPM_TARGET_OBJECT = 3

Target type is compiled object
integer, public, parameter :: FPM_TARGET_SHARED = 6

Target type is a shared library
integer, public, parameter :: FPM_TARGET_UNKNOWN = -1

Target type is unknown (ignored)

Interfaces

public interface add_target

  • private subroutine add_new_target(targets, package, type, output_name, source, link_libraries, features, preprocess, version, output_dir)

    Allocate a new target and append to target list

    Arguments

    Type IntentOptional Attributes Name
    type(build_target_ptr), intent(inout), allocatable :: targets(:)
    character(len=*), intent(in) :: package
    integer, intent(in) :: type
    character(len=*), intent(in) :: output_name
    type(srcfile_t), intent(in), optional :: source
    type(string_t), intent(in), optional :: link_libraries(:)
    type(fortran_config_t), intent(in), optional :: features
    type(preprocess_config_t), intent(in), optional :: preprocess
    type(version_t), intent(in), optional :: version
    character(len=*), intent(in), optional :: output_dir

  • private subroutine add_old_target(targets, add_target)

    Arguments

    Type IntentOptional Attributes Name
    type(build_target_ptr), intent(inout), allocatable :: targets(:)
    type(build_target_ptr), intent(in) :: add_target

  • private subroutine add_old_targets(targets, add_targets)

    Arguments

    Type IntentOptional Attributes Name
    type(build_target_ptr), intent(inout), allocatable :: targets(:)
    type(build_target_ptr), intent(in) :: add_targets(:)

public interface add_target_ptr

Add one or multiple build target pointers to array (gcc-15 bug workaround)

  • private subroutine add_target_ptr_one(list, new)

    Add one build target pointer to array with a loop (gcc-15 bug on array initializer)

    Arguments

    Type IntentOptional Attributes Name
    type(build_target_ptr), intent(inout), allocatable :: list(:)
    type(build_target_ptr), intent(in) :: new

  • private subroutine add_target_ptr_many(list, new)

    Add multiple build target pointers to array with a loop (gcc-15 bug on array initializer)

    Arguments

    Type IntentOptional Attributes Name
    type(build_target_ptr), intent(inout), allocatable :: list(:)
    type(build_target_ptr), intent(in) :: new(:)

Derived Types

type, public ::  build_target_ptr

Wrapper type for constructing arrays of [[build_target_t]] pointers

Components

Type Visibility Attributes Name Initial
type(build_target_t), public, pointer :: ptr => null()

type, public ::  build_target_t

Type describing a generated build target

Components

Type Visibility Attributes Name Initial
character(len=:), public, allocatable :: compile_flags

Compile flags for this build target
type(build_target_ptr), public, allocatable :: dependencies(:)

Resolved build dependencies
integer(kind=int64), public, allocatable :: digest_cached

Previous source file hash
type(fortran_config_t), public :: features

Language features
character(len=:), public, allocatable :: link_flags

Link flags for this build target
type(string_t), public, allocatable :: link_libraries(:)

Native libraries to link against
type(string_t), public, allocatable :: link_objects(:)

Objects needed to link this target
type(string_t), public, allocatable :: macros(:)

List of macros
character(len=:), public, allocatable :: output_dir

File path of output directory
character(len=:), public, allocatable :: output_file

File path of build target object relative to cwd
character(len=:), public, allocatable :: output_log_file

File path of build log file relative to cwd
character(len=:), public, allocatable :: output_name

File path of build target object relative to output_dir
character(len=:), public, allocatable :: package_name

Name of parent package
integer, public :: schedule = -1

Targets in the same schedule group are guaranteed to be independent
logical, public :: skip = .false.

Flag set if build target will be skipped (not built)
logical, public :: sorted = .false.

Flag set if build target is sorted for building
type(srcfile_t), public, allocatable :: source

Primary source for this build target
integer, public :: target_type = FPM_TARGET_UNKNOWN

Target type
logical, public :: touched = .false.

Flag set when first visited to check for circular dependencies
type(version_t), public, allocatable :: version

Version number

Type-Bound Procedures

procedure, public :: info

Print information on this instance
procedure, public :: is_executable_target
procedure, public :: set_output_dir

Set output directory

Functions

public pure function FPM_TARGET_NAME(type) result(msg)

Target type name

Arguments

Type IntentOptional Attributes Name
integer, intent(in) :: type

Return Value character(len=:), allocatable

public function new_target(package, type, output_name, source, link_libraries, features, preprocess, version, output_dir)

Allocate a new target

Arguments

Type IntentOptional Attributes Name
character(len=*), intent(in) :: package
integer, intent(in) :: type
character(len=*), intent(in) :: output_name
type(srcfile_t), intent(in), optional :: source
type(string_t), intent(in), optional :: link_libraries(:)
type(fortran_config_t), intent(in), optional :: features
type(preprocess_config_t), intent(in), optional :: preprocess
type(version_t), intent(in), optional :: version
character(len=*), intent(in), optional :: output_dir

Return Value type(build_target_ptr)


Subroutines

public subroutine add_dependency(target, dependency)

Add pointer to dependeny in target%dependencies

Arguments

Type IntentOptional Attributes Name
type(build_target_t), intent(inout) :: target
type(build_target_t), intent(in), target :: dependency

public subroutine filter_executable_targets(targets, scope, list)

Arguments

Type IntentOptional Attributes Name
type(build_target_ptr), intent(in) :: targets(:)
integer, intent(in) :: scope
type(string_t), intent(out), allocatable :: list(:)

public subroutine filter_library_targets(targets, list)

Returns pointers to all library targets

Arguments

Type IntentOptional Attributes Name
type(build_target_ptr), intent(in) :: targets(:)
type(build_target_ptr), intent(out), allocatable :: list(:)

public subroutine filter_modules(targets, list)

Arguments

Type IntentOptional Attributes Name
type(build_target_ptr), intent(in) :: targets(:)
type(string_t), intent(out), allocatable :: list(:)

public subroutine get_library_dirs(model, targets, shared_lib_dirs)

Add link directories for all shared libraries in the dependency graph

Arguments

Type IntentOptional Attributes Name
type(fpm_model_t), intent(in) :: model
type(build_target_ptr), intent(inout), target :: targets(:)
type(string_t), intent(out), allocatable :: shared_lib_dirs(:)

public subroutine resolve_module_dependencies(targets, external_modules, error)

Add dependencies to source-based targets (FPM_TARGET_OBJECT) based on any modules used by the corresponding source file.

Read more…

Arguments

Type IntentOptional Attributes Name
type(build_target_ptr), intent(inout), target :: targets(:)
type(string_t), intent(in) :: external_modules(:)
type(error_t), intent(out), allocatable :: error

public subroutine targets_from_sources(targets, model, prune, library, error)

High-level wrapper to generate build target information

Arguments

Type IntentOptional Attributes Name
type(build_target_ptr), intent(out), allocatable :: targets(:)

The generated list of build targets
type(fpm_model_t), intent(inout), target :: model

The package model from which to construct the target list
logical, intent(in) :: prune

Enable tree-shaking/pruning of module dependencies
type(library_config_t), intent(in), optional :: library

Library build configuration
type(error_t), intent(out), allocatable :: error

Error structure