solenv/gbuild/ExternalProject.mk

   1 # -*- Mode: makefile-gmake; tab-width: 4; indent-tabs-mode: t -*-
   2 #
   3 # This file is part of the LibreOffice project.
   4 #
   5 # This Source Code Form is subject to the terms of the Mozilla Public
   6 # License, v. 2.0. If a copy of the MPL was not distributed with this
   7 # file, You can obtain one at http://mozilla.org/MPL/2.0/.
   8 #
   9
  10 # class ExternalProject
  11
  12 # Handles build of an external project
  13
  14 # Build of an external typically uses three gbuild classes:
  15 # ExternalProject, ExternalPackage or Package, and UnpackedTarball. The
  16 # first step is to prepare sources using UnpackedTarball. The tarball is
  17 # passed to an ExternalProject, which handles the build proper and the
  18 # results are delivered by an ExternalPackage (or Package, again;
  19 # Package is sufficient if no files--e.g., headers--from the unpacked
  20 # tarball need to be delivered.)
  21 #
  22 # An ExternalProject always uses one UnpackedTarball with the same name.
  23 # The dependency structure ensures that any change on a dependency
  24 # of the ExternalProject will cause the UnpackedTarball to be unpacked
  25 # again, so the ExternalProject always does a clean build and is not at
  26 # the mercy of the external's build system's dubious incremental builds.
  27 #
  28 # ExternalProject target
  29 # => ExternalProject state target(s) (these actually build stuff)
  30 #    => UnpackedTarball target (unpack the tarball)
  31 #       => UnpackedTarball prepare target
  32 #          => ExternalProject prepare target
  33 #             => stuff the external depends upon
  34 #
  35 # ExternalProject has no gbuild abstraction for actually building the
  36 # external code, so it is necessary to define rule(s) and recipe(s) to
  37 # handle it. It does not matter if there are several rules handling
  38 # separate phases of the build (e.g., configure, build, install) or if
  39 # the whole build is handled by one rule.
  40 #
  41 # ExternalProject uses two directories during the build: state dir
  42 # serves to keep file targets that mark state of the build progress
  43 # (e.g., "configure done", "build done") and the targets are accessible
  44 # via gb_ExternalProject_get_state_target. It is highly advised to
  45 # register them using gb_ExternalProject_register_targets. The second
  46 # directory is work dir, accessible only from recipes via variable
  47 # $(EXTERNAL_WORKDIR).
  48
  49 $(dir $(call gb_ExternalProject_get_statedir,%))%/.dir :
  50         $(if $(wildcard $(dir $@)),,mkdir -p $(dir $@))
  51
  52 $(dir $(call gb_ExternalProject_get_target,%)).dir :
  53         $(if $(wildcard $(dir $@)),,mkdir -p $(dir $@))
  54
  55 $(call gb_ExternalProject_get_preparation_target,%) :
  56         touch $@
  57
  58 $(call gb_ExternalProject_get_target,%) :
  59         $(call gb_Output_announce,$*,$(true),PRJ,3)
  60         touch $@
  61
  62 .PHONY : $(call gb_ExternalProject_get_clean_target,%)
  63 $(call gb_ExternalProject_get_clean_target,%) :
  64         $(call gb_Output_announce,$*,$(false),PRJ,3)
  65         $(call gb_Helper_abbreviate_dirs,\
  66                 rm -rf \
  67                         $(call gb_ExternalProject_get_target,$*) \
  68                         $(call gb_ExternalProject_get_statedir,$*) \
  69         )
  70
  71 # Define a new external project, using an unpacked tarball of the same name
  72 #
  73 # gb_ExternalProject_ExternalProject project
  74 define gb_ExternalProject_ExternalProject
  75 $(call gb_ExternalProject_get_target,$(1)) : EXTERNAL_WORKDIR := $(call gb_UnpackedTarball_get_dir,$(1))
  76
  77 $(call gb_ExternalProject_get_preparation_target,$(1)) : $(gb_Module_CURRENTMAKEFILE)
  78 $(call gb_ExternalProject_get_preparation_target,$(1)) :| $(dir $(call gb_ExternalProject_get_target,$(1))).dir
  79 $(call gb_UnpackedTarball_get_preparation_target,$(1)) : $(call gb_ExternalProject_get_preparation_target,$(1))
  80 $(call gb_ExternalProject_get_clean_target,$(1)) : $(call gb_UnpackedTarball_get_clean_target,$(1))
  81 $(call gb_ExternalProject_get_target,$(1)) : $(call gb_UnpackedTarball_get_target,$(1))
  82 $(call gb_ExternalProject_get_target,$(1)) :| $(dir $(call gb_ExternalProject_get_target,$(1))).dir
  83
  84 $$(eval $$(call gb_Module_register_target,ExternalProject_$(1),$(call gb_ExternalProject_get_target,$(1)),$(call gb_ExternalProject_get_clean_target,$(1))))
  85 $(call gb_Helper_make_userfriendly_targets,$(1),ExternalProject)
  86
  87 endef
  88
  89 # Depend on an unpacked tarball
  90 #
  91 # This is needed to express dependencies on header-only projects, which
  92 # do not have any ExternalProject.
  93 #
  94 # gb_ExternalProject_use_unpacked project unpacked
  95 define gb_ExternalProject_use_unpacked
  96 $(call gb_ExternalProject_get_preparation_target,$(1)) : $(call gb_UnpackedTarball_get_target,$(2))
  97
  98 endef
  99
 100 # Register a target in state directory
 101 #
 102 # This function defines proper dependencies for the target to ensure
 103 # that:
 104 # * the main target is updated if this target is updated
 105 # * this target is updated if the unpacked tarball has changed.
 106 #
 107 # gb_ExternalProject_register_target project target
 108 define gb_ExternalProject_register_target
 109 $(call gb_ExternalProject_get_target,$(1)) : $(call gb_ExternalProject_get_state_target,$(1),$(2))
 110 $(call gb_ExternalProject_get_state_target,$(1),$(2)) : $(call gb_UnpackedTarball_get_target,$(1))
 111 $(call gb_ExternalProject_get_state_target,$(1),$(2)) :| $(dir $(call gb_ExternalProject_get_state_target,$(1),$(2))).dir
 112
 113 endef
 114
 115 # Register several targets at once
 116 #
 117 # gb_ExternalProject_register_targets project target(s)
 118 define gb_ExternalProject_register_targets
 119 $(foreach target,$(2),$(call gb_ExternalProject_register_target,$(1),$(target)))
 120
 121 endef
 122
 123 # Make an external Project depend on another ExternalProject
 124 define gb_ExternalProject_use_external_project
 125 $(call gb_ExternalProject_get_preparation_target,$(1)) : $(call gb_ExternalProject_get_target,$(2))
 126
 127 endef
 128
 129 # call gb_ExternalProject_use_external_projects,project,projects
 130 define gb_ExternalProject_use_external_projects
 131 $(foreach ext,$(2),$(call gb_ExternalProject_use_external_project,$(1),$(ext)))
 132 endef
 133
 134 # Make an ExternalProject depend on an external
 135 #
 136 # this forwards to functions that must be defined in RepositoryExternal.mk.
 137 # $(eval $(call gb_ExternalProject_use_external,library,external))
 138 define gb_ExternalProject_use_external
 139 $(if $(filter undefined,$(origin gb_ExternalProject__use_$(2))),\
 140   $(error gb_ExternalProject_use_external: unknown external: $(2)),\
 141   $(call gb_ExternalProject__use_$(2),$(1)))
 142 endef
 143
 144 define gb_ExternalProject_use_externals
 145 $(foreach external,$(2),$(call gb_ExternalProject_use_external,$(1),$(external)))
 146 endef
 147
 148 # Make an external project depend on a package
 149 #
 150 # This is most useful for depending on output files created by another
 151 # ExternalProject.
 152 #
 153 # gb_ExternalProject_use_package external package
 154 define gb_ExternalProject_use_package
 155 $(call gb_ExternalProject_get_preparation_target,$(1)) : $(call gb_Package_get_target,$(2))
 156
 157 endef
 158
 159 # Make an external project depend on several packages at once
 160 #
 161 # gb_ExternalProject_use_packages external package(s)
 162 define gb_ExternalProject_use_packages
 163 $(foreach package,$(2),$(call gb_ExternalProject_use_package,$(1),$(package)))
 164
 165 endef
 166
 167 # Make an external project depend on a StaticLibrary
 168 #
 169 # Realistically there are some externals that do not have a usable build
 170 # system, and other externals that do may depend on those.
 171 #
 172 # gb_ExternalProject_use_static_libraries external staticlibraries
 173 define gb_ExternalProject_use_static_libraries
 174 $(call gb_ExternalProject_get_preparation_target,$(1)) : \
 175         $(foreach lib,$(2),$(call gb_StaticLibrary_get_target,$(lib)))
 176
 177 endef
 178
 179 # Make an external project depend on a Library
 180 #
 181 # Realistically there are some externals that do not have a usable build
 182 # system, and other externals that do may depend on those.
 183 #
 184 # gb_ExternalProject_use_libraries external libraries
 185 define gb_ExternalProject_use_libraries
 186 ifneq (,$$(filter-out $(gb_Library_KNOWNLIBS),$(2)))
 187 $$(eval $$(call gb_Output_info,currently known libraries are: $(sort $(gb_Library_KNOWNLIBS)),ALL))
 188 $$(eval $$(call gb_Output_error,Cannot link against library/libraries $$(filter-out $(gb_Library_KNOWNLIBS),$(2)). Libraries must be registered in Repository.mk or RepositoryExternal.mk))
 189 endif
 190 ifneq (,$$(filter $$(gb_MERGEDLIBS),$(2)))
 191 $$(eval $$(call gb_Output_error,Cannot link against library/libraries $$(filter $$(gb_MERGEDLIBS),$(2)) because they are merged.))
 192 endif
 193
 194 $(call gb_ExternalProject_get_preparation_target,$(1)) : \
 195         $(foreach lib,$(2),$(call gb_Library_get_target,$(lib)))
 196
 197 endef
 198
 199 # Make an external project depend on a Jar file
 200 #
 201 # gb_ExternalProject_use_jars external jars
 202 define gb_ExternalProject_use_jars
 203 $(call gb_ExternalProject_get_preparation_target,$(1)) : \
 204         $(foreach jar,$(2),$(call gb_Jar_get_target,$(jar)))
 205
 206 endef
 207
 208 # Run a target command
 209 #
 210 # This provides a wrapper that changes to the right directory,
 211 # touches the 'target' if successful and also provides
 212 # the ability to hide the output if there is no failure
 213 # gb_ExternalProject_run,run_target,command,optional_extra_sub_directory,optional_log_filename)
 214 # default log_filename is <run_target>.log
 215 #
 216
 217 define gb_ExternalProject_run
 218 $(if $(findstring YES,$(UNPACKED_IS_BIN_TARBALL)),\
 219         touch $@,
 220 $(call gb_Helper_print_on_error,cd $(EXTERNAL_WORKDIR)/$(3) && \
 221         unset Platform && \
 222         $(if $(WRAPPERS),export $(WRAPPERS) &&) \
 223         $(if $(NMAKE),export $(NMAKE) &&) \
 224         $(2) && touch $@,$(EXTERNAL_WORKDIR)/$(if $(3),$(3)/,)$(if $(4),$(4),$(1).log))
 225 )
 226 endef
 227
 228 # vim: set noet sw=4 ts=4: