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update CPM.cmake

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This commit is contained in:
Lars Melchior 2020-04-29 10:06:53 +02:00
parent e362045719
commit 373d3c1651
1 changed files with 32 additions and 3 deletions
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35
cmake/CPM.cmake
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@ -28,7 +28,7 @@
cmake_minimum_required(VERSION 3.14 FATAL_ERROR)
set(CURRENT_CPM_VERSION 0.18)
set(CURRENT_CPM_VERSION 0.21)
if(CPM_DIRECTORY)
if(NOT ${CPM_DIRECTORY} MATCHES ${CMAKE_CURRENT_LIST_DIR})
@ -41,14 +41,23 @@ See https://github.com/TheLartians/CPM.cmake for more information."
endif()
return()
endif()
get_property(CPM_INITIALIZED GLOBAL "" PROPERTY CPM_INITIALIZED SET)
if (CPM_INITIALIZED)
return()
endif()
endif()
set_property(GLOBAL PROPERTY CPM_INITIALIZED true)
option(CPM_USE_LOCAL_PACKAGES "Always try to use `find_package` to get dependencies" $ENV{CPM_USE_LOCAL_PACKAGES})
option(CPM_LOCAL_PACKAGES_ONLY "Only use `find_package` to get dependencies" $ENV{CPM_LOCAL_PACKAGES_ONLY})
option(CPM_DOWNLOAD_ALL "Always download dependencies from source" $ENV{CPM_DOWNLOAD_ALL})
option(CPM_DONT_UPDATE_MODULE_PATH "Don't update the module path to allow using find_package" $ENV{CPM_DONT_UPDATE_MODULE_PATH})
set(CPM_VERSION ${CURRENT_CPM_VERSION} CACHE INTERNAL "")
set(CPM_DIRECTORY ${CMAKE_CURRENT_LIST_DIR} CACHE INTERNAL "")
set(CPM_FILE ${CMAKE_CURRENT_LIST_FILE} CACHE INTERNAL "")
set(CPM_PACKAGES "" CACHE INTERNAL "")
set(CPM_DRY_RUN OFF CACHE INTERNAL "Don't download or configure dependencies (for testing)")
@ -60,6 +69,15 @@ endif()
set(CPM_SOURCE_CACHE ${CPM_SOURCE_CACHE_DEFAULT} CACHE PATH "Directory to downlaod CPM dependencies")
if (NOT CPM_DONT_UPDATE_MODULE_PATH)
set(CPM_MODULE_PATH "${CMAKE_BINARY_DIR}/CPM_modules" CACHE INTERNAL "")
# remove old modules
FILE(REMOVE_RECURSE ${CPM_MODULE_PATH})
file(MAKE_DIRECTORY ${CPM_MODULE_PATH})
# locally added CPM modules should override global packages
set(CMAKE_MODULE_PATH "${CPM_MODULE_PATH};${CMAKE_MODULE_PATH}")
endif()
include(FetchContent)
include(CMakeParseArguments)
@ -80,6 +98,15 @@ function(cpm_find_package NAME VERSION)
endif()
endfunction()
# Create a custom FindXXX.cmake module for a CPM package
# This prevents `find_package(NAME)` from finding the system library
function(CPMCreateModuleFile Name)
if (NOT CPM_DONT_UPDATE_MODULE_PATH)
# erase any previous modules
FILE(WRITE ${CPM_MODULE_PATH}/Find${Name}.cmake "include(${CPM_FILE})\n${ARGN}\nset(${Name}_FOUND TRUE)")
endif()
endfunction()
# Find a package locally or fallback to CPMAddPackage
function(CPMFindPackage)
set(oneValueArgs
@ -167,7 +194,7 @@ function(CPMAddPackage)
list(APPEND CPM_ARGS_UNPARSED_ARGUMENTS GIT_REPOSITORY "https://gitlab.com/${CPM_ARGS_GITLAB_REPOSITORY}.git")
endif()
if (${CPM_ARGS_NAME} IN_LIST CPM_PACKAGES)
if ("${CPM_ARGS_NAME}" IN_LIST CPM_PACKAGES)
CPMGetPackageVersion(${CPM_ARGS_NAME} CPM_PACKAGE_VERSION)
if(${CPM_PACKAGE_VERSION} VERSION_LESS ${CPM_ARGS_VERSION})
message(WARNING "${CPM_INDENT} requires a newer version of ${CPM_ARGS_NAME} (${CPM_ARGS_VERSION}) than currently included (${CPM_PACKAGE_VERSION}).")
@ -218,7 +245,8 @@ function(CPMAddPackage)
set(download_directory ${CPM_SOURCE_CACHE}/${lower_case_name}/${origin_hash})
list(APPEND FETCH_CONTENT_DECLARE_EXTRA_OPTS SOURCE_DIR ${download_directory})
if (EXISTS ${download_directory})
list(APPEND FETCH_CONTENT_DECLARE_EXTRA_OPTS DOWNLOAD_COMMAND ":")
# disable the download command to allow offline builds
list(APPEND FETCH_CONTENT_DECLARE_EXTRA_OPTS DOWNLOAD_COMMAND "${CMAKE_COMMAND}")
set(PACKAGE_INFO "${download_directory}")
else()
# remove timestamps so CMake will re-download the dependency
@ -230,6 +258,7 @@ function(CPMAddPackage)
cpm_declare_fetch(${CPM_ARGS_NAME} ${CPM_ARGS_VERSION} ${PACKAGE_INFO} "${CPM_ARGS_UNPARSED_ARGUMENTS}" ${FETCH_CONTENT_DECLARE_EXTRA_OPTS})
cpm_fetch_package(${CPM_ARGS_NAME} ${DOWNLOAD_ONLY})
cpm_get_fetch_properties(${CPM_ARGS_NAME})
CPMCreateModuleFile(${CPM_ARGS_NAME} "CPMAddPackage(${ARGN})")
SET(${CPM_ARGS_NAME}_ADDED YES)
cpm_export_variables()
endfunction()