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# Mason CMake
include(CMakeParseArguments)
function(mason_detect_platform)
# Determine platform
if(NOT MASON_PLATFORM)
# we call uname -s manually here since
# CMAKE_HOST_SYSTEM_NAME will not be defined before the project() call
execute_process(
COMMAND uname -s
OUTPUT_VARIABLE UNAME
OUTPUT_STRIP_TRAILING_WHITESPACE)
if (UNAME STREQUAL "Darwin")
set(MASON_PLATFORM "osx" PARENT_SCOPE)
else()
set(MASON_PLATFORM "linux" PARENT_SCOPE)
endif()
endif()
# Determine platform version string
if(NOT MASON_PLATFORM_VERSION)
execute_process(
COMMAND uname -m
OUTPUT_VARIABLE MASON_PLATFORM_VERSION
OUTPUT_STRIP_TRAILING_WHITESPACE)
set(MASON_PLATFORM_VERSION "${MASON_PLATFORM_VERSION}" PARENT_SCOPE)
endif()
endfunction()
function(mason_use _PACKAGE)
if(NOT _PACKAGE)
message(FATAL_ERROR "[Mason] No package name given")
endif()
cmake_parse_arguments("" "HEADER_ONLY" "VERSION" "" ${ARGN})
if(_UNPARSED_ARGUMENTS)
message(FATAL_ERROR "[Mason] mason_use() called with unrecognized arguments: ${_UNPARSED_ARGUMENTS}")
endif()
if(NOT _VERSION)
message(FATAL_ERROR "[Mason] Specifying a version is required")
endif()
if(MASON_PACKAGE_${_PACKAGE}_INVOCATION STREQUAL "${MASON_INVOCATION}")
# Check that the previous invocation of mason_use didn't select another version of this package
if(NOT MASON_PACKAGE_${_PACKAGE}_VERSION STREQUAL ${_VERSION})
message(FATAL_ERROR "[Mason] Already using ${_PACKAGE} ${MASON_PACKAGE_${_PACKAGE}_VERSION}. Cannot select version ${_VERSION}.")
endif()
else()
if(_HEADER_ONLY)
set(_PLATFORM_ID "headers")
else()
set(_PLATFORM_ID "${MASON_PLATFORM}-${MASON_PLATFORM_VERSION}")
endif()
set(_SLUG "${_PLATFORM_ID}/${_PACKAGE}/${_VERSION}")
set(_INSTALL_PATH "${MASON_PACKAGE_DIR}/${_SLUG}")
file(RELATIVE_PATH _INSTALL_PATH_RELATIVE "${CMAKE_CURRENT_SOURCE_DIR}" "${_INSTALL_PATH}")
if(NOT EXISTS "${_INSTALL_PATH}")
set(_CACHE_PATH "${MASON_PACKAGE_DIR}/.binaries/${_SLUG}.tar.gz")
if (NOT EXISTS "${_CACHE_PATH}")
# Download the package
set(_URL "${MASON_REPOSITORY}/${_SLUG}.tar.gz")
message("[Mason] Downloading package ${_URL}...")
set(_FAILED)
set(_ERROR)
# Note: some CMake versions are compiled without SSL support
get_filename_component(_CACHE_DIR "${_CACHE_PATH}" DIRECTORY)
file(MAKE_DIRECTORY "${_CACHE_DIR}")
execute_process(
COMMAND curl --retry 3 -s -f -S -L "${_URL}" -o "${_CACHE_PATH}.tmp"
RESULT_VARIABLE _FAILED
ERROR_VARIABLE _ERROR)
if(_FAILED)
message(FATAL_ERROR "[Mason] Failed to download ${_URL}: ${_ERROR}")
else()
# We downloaded to a temporary file to prevent half-finished downloads
file(RENAME "${_CACHE_PATH}.tmp" "${_CACHE_PATH}")
endif()
endif()
# Unpack the package
message("[Mason] Unpacking package to ${_INSTALL_PATH_RELATIVE}...")
file(MAKE_DIRECTORY "${_INSTALL_PATH}")
execute_process(
COMMAND ${CMAKE_COMMAND} -E tar xzf "${_CACHE_PATH}"
WORKING_DIRECTORY "${_INSTALL_PATH}")
endif()
# Error out if there is no config file.
if(NOT EXISTS "${_INSTALL_PATH}/mason.ini")
message(FATAL_ERROR "[Mason] Could not find mason.ini for package ${_PACKAGE} ${_VERSION}")
endif()
set(MASON_PACKAGE_${_PACKAGE}_PREFIX "${_INSTALL_PATH}" CACHE STRING "${_PACKAGE} ${_INSTALL_PATH}" FORCE)
mark_as_advanced(MASON_PACKAGE_${_PACKAGE}_PREFIX)
# Load the configuration from the ini file
file(STRINGS "${_INSTALL_PATH}/mason.ini" _CONFIG_FILE)
foreach(_LINE IN LISTS _CONFIG_FILE)
string(REGEX MATCH "^([a-z_]+) *= *" _KEY "${_LINE}")
if (_KEY)
string(LENGTH "${_KEY}" _KEY_LENGTH)
string(SUBSTRING "${_LINE}" ${_KEY_LENGTH} -1 _VALUE)
string(REGEX REPLACE ";.*$" "" _VALUE "${_VALUE}") # Trim trailing commas
string(REPLACE "{prefix}" "${_INSTALL_PATH}" _VALUE "${_VALUE}")
string(STRIP "${_VALUE}" _VALUE)
string(REPLACE "=" "" _KEY "${_KEY}")
string(STRIP "${_KEY}" _KEY)
string(TOUPPER "${_KEY}" _KEY)
if(_KEY STREQUAL "INCLUDE_DIRS" OR _KEY STREQUAL "STATIC_LIBS" )
separate_arguments(_VALUE)
endif()
set(MASON_PACKAGE_${_PACKAGE}_${_KEY} "${_VALUE}" CACHE STRING "${_PACKAGE} ${_KEY}" FORCE)
mark_as_advanced(MASON_PACKAGE_${_PACKAGE}_${_KEY})
endif()
endforeach()
# Compare version in the package to catch errors early on
if(NOT _VERSION STREQUAL MASON_PACKAGE_${_PACKAGE}_VERSION)
message(FATAL_ERROR "[Mason] Package at ${_INSTALL_PATH_RELATIVE} has version '${MASON_PACKAGE_${_PACKAGE}_VERSION}', but required '${_VERSION}'")
endif()
if(NOT _PACKAGE STREQUAL MASON_PACKAGE_${_PACKAGE}_NAME)
message(FATAL_ERROR "[Mason] Package at ${_INSTALL_PATH_RELATIVE} has name '${MASON_PACKAGE_${_PACKAGE}_NAME}', but required '${_NAME}'")
endif()
if(NOT _HEADER_ONLY)
if(NOT MASON_PLATFORM STREQUAL MASON_PACKAGE_${_PACKAGE}_PLATFORM)
message(FATAL_ERROR "[Mason] Package at ${_INSTALL_PATH_RELATIVE} has platform '${MASON_PACKAGE_${_PACKAGE}_PLATFORM}', but required '${MASON_PLATFORM}'")
endif()
if(NOT MASON_PLATFORM_VERSION STREQUAL MASON_PACKAGE_${_PACKAGE}_PLATFORM_VERSION)
message(FATAL_ERROR "[Mason] Package at ${_INSTALL_PATH_RELATIVE} has platform version '${MASON_PACKAGE_${_PACKAGE}_PLATFORM_VERSION}', but required '${MASON_PLATFORM_VERSION}'")
endif()
endif()
# Concatenate the static libs and libraries
set(_LIBRARIES)
list(APPEND _LIBRARIES ${MASON_PACKAGE_${_PACKAGE}_STATIC_LIBS} ${MASON_PACKAGE_${_PACKAGE}_LDFLAGS})
set(MASON_PACKAGE_${_PACKAGE}_LIBRARIES "${_LIBRARIES}" CACHE STRING "${_PACKAGE} _LIBRARIES" FORCE)
mark_as_advanced(MASON_PACKAGE_${_PACKAGE}_LIBRARIES)
if(NOT _HEADER_ONLY)
string(REGEX MATCHALL "(^| +)-L *([^ ]+)" MASON_PACKAGE_${_PACKAGE}_LIBRARY_DIRS "${MASON_PACKAGE_${_PACKAGE}_LDFLAGS}")
string(REGEX REPLACE "(^| +)-L *" "\\1" MASON_PACKAGE_${_PACKAGE}_LIBRARY_DIRS "${MASON_PACKAGE_${_PACKAGE}_LIBRARY_DIRS}")
set(MASON_PACKAGE_${_PACKAGE}_LIBRARY_DIRS "${MASON_PACKAGE_${_PACKAGE}_LIBRARY_DIRS}" CACHE STRING "${_PACKAGE} ${MASON_PACKAGE_${_PACKAGE}_LIBRARY_DIRS}" FORCE)
mark_as_advanced(MASON_PACKAGE_${_PACKAGE}_LIBRARY_DIRS)
endif()
# Store invocation ID to prevent different versions of the same package in one invocation
set(MASON_PACKAGE_${_PACKAGE}_INVOCATION "${MASON_INVOCATION}" CACHE INTERNAL "${_PACKAGE} invocation ID" FORCE)
endif()
endfunction()
macro(target_add_mason_package _TARGET _VISIBILITY _PACKAGE)
if (NOT MASON_PACKAGE_${_PACKAGE}_INVOCATION)
message(FATAL_ERROR "[Mason] Package ${_PACKAGE} has not been initialized yet")
endif()
target_include_directories(${_TARGET} ${_VISIBILITY} "${MASON_PACKAGE_${_PACKAGE}_INCLUDE_DIRS}")
target_compile_definitions(${_TARGET} ${_VISIBILITY} "${MASON_PACKAGE_${_PACKAGE}_DEFINITIONS}")
target_compile_options(${_TARGET} ${_VISIBILITY} "${MASON_PACKAGE_${_PACKAGE}_OPTIONS}")
target_link_libraries(${_TARGET} ${_VISIBILITY} "${MASON_PACKAGE_${_PACKAGE}_LIBRARIES}")
endmacro()
# Setup
string(RANDOM LENGTH 16 MASON_INVOCATION)
# Read environment variables if CMake is run in command mode
if (CMAKE_ARGC)
set(MASON_PLATFORM "$ENV{MASON_PLATFORM}")
set(MASON_PLATFORM_VERSION "$ENV{MASON_PLATFORM_VERSION}")
set(MASON_PACKAGE_DIR "$ENV{MASON_PACKAGE_DIR}")
set(MASON_REPOSITORY "$ENV{MASON_REPOSITORY}")
endif()
# Directory where Mason packages are located; typically ends with mason_packages
if (NOT MASON_PACKAGE_DIR)
set(MASON_PACKAGE_DIR "${CMAKE_SOURCE_DIR}/mason_packages")
endif()
# URL prefix of where packages are located.
if (NOT MASON_REPOSITORY)
set(MASON_REPOSITORY "https://mason-binaries.s3.amazonaws.com")
endif()
mason_detect_platform()
# Execute commands if CMake is run in command mode
if (CMAKE_ARGC)
# Collect remaining arguments for passing to mason_use
set(_MASON_ARGS)
foreach(I RANGE 4 ${CMAKE_ARGC})
list(APPEND _MASON_ARGS "${CMAKE_ARGV${I}}")
endforeach()
# Install the package
mason_use(${_MASON_ARGS})
# Optionally print variables
if(DEFINED MASON_PACKAGE_${CMAKE_ARGV4}_${CMAKE_ARGV3})
# CMake can't write to stdout with message()
execute_process(COMMAND ${CMAKE_COMMAND} -E echo "${MASON_PACKAGE_${CMAKE_ARGV4}_${CMAKE_ARGV3}}")
endif()
endif()
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