blob: a48f599b47324c30d7b38df28bf4a0c085af0245 (
plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
|
#.rst:
# ECMUseFindModules
# -----------------
#
# Selectively use some of the find modules provided by extra-cmake-modules.
#
# This module is automatically available once extra-cmake-modules has been
# found, so it is not necessary to ``include(ECMUseFindModules)`` explicitly.
#
# ::
#
# ecm_use_find_modules(DIR <dir>
# MODULES module1.cmake [module2.cmake [...]]
# [NO_OVERRIDE])
#
# This allows selective use of the find modules provided by ECM, including
# deferring to CMake's versions of those modules if it has them. Rather than
# adding ``${ECM_FIND_MODULE_DIR}`` to ``CMAKE_MODULE_PATH``, you use
# ecm_use_find_modules() to copy the modules you want to a local (build)
# directory, and add that to ``CMAKE_MODULE_PATH``.
#
# The find modules given to MODULES will be copied to the directory given by DIR
# (which should be located in ``${CMAKE_BINARY_DIR}`` and added to
# ``CMAKE_MODULE_PATH``). If NO_OVERRIDE is given, only modules not also
# provided by CMake will be copied.
#
# Example:
#
# .. code-block:: cmake
#
# find_package(ECM REQUIRED)
# ecm_use_find_modules(
# DIR ${CMAKE_BINARY_DIR}/cmake
# MODULES FindEGL.cmake
# NO_OVERRIDE
# )
# set(CMAKE_MODULE_PATH ${CMAKE_BINARY_DIR}/cmake)
#
# This example will make ``FindEGL.cmake`` available in your project, but only
# as long as it is not yet part of CMake. Calls to ``find_package(EGL)`` will
# then make use of this copied module (or the CMake module if it exists).
#
# Another possible use for this macro is to take copies of find modules that can
# be installed along with config files if they are required as a dependency (for
# example, if targets provided by the find module are in the link interface of a
# library).
#=============================================================================
# Copyright 2011 Alexander Neundorf <neundorf@kde.org>
#
# Distributed under the OSI-approved BSD License (the "License");
# see accompanying file COPYING-CMAKE-SCRIPTS for details.
#
# This software is distributed WITHOUT ANY WARRANTY; without even the
# implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
# See the License for more information.
#=============================================================================
# (To distribute this file outside of extra-cmake-modules, substitute the full
# License text for the above reference.)
include(CMakeParseArguments)
function(ecm_use_find_modules)
set(_options NO_OVERRIDE )
set(_oneValueArgs DIR )
set(_multiValueArgs MODULES )
cmake_parse_arguments(EUFM "${_options}" "${_oneValueArgs}" "${_multiValueArgs}" ${ARGN} )
if(NOT EUFM_DIR)
message(FATAL_ERROR "No DIR specified for ecm_use_find_modules() !")
endif()
if(NOT IS_ABSOLUTE "${EUFM_DIR}")
set(EUFM_DIR "${CMAKE_CURRENT_BINARY_DIR}/${EUFM_DIR}")
endif()
file(MAKE_DIRECTORY "${EUFM_DIR}")
foreach(file ${EUFM_MODULES})
if(NOT EXISTS ${ECM_FIND_MODULE_DIR}/${file} )
message(FATAL_ERROR "File ${file} not found in ${ECM_FIND_MODULE_DIR} !")
endif()
if(NOT EXISTS "${CMAKE_ROOT}/Modules/${file}" OR NOT EUFM_NO_OVERRIDE)
configure_file("${ECM_FIND_MODULE_DIR}/${file}" "${EUFM_DIR}/${file}" COPYONLY)
endif()
endforeach()
# This is required by some of the find modules
file(WRITE "${EUFM_DIR}/ECMFindModuleHelpersStub.cmake"
"include(\"${ECM_MODULE_DIR}/ECMFindModuleHelpers.cmake\")")
endfunction()
|
