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cmake_minimum_required(VERSION 3.19)
project(Gn
DESCRIPTION "Meta-build system"
HOMEPAGE_URL "https://gn.googlesource.com/gn/"
LANGUAGES CXX C
)
set(GN_SOURCE_DIR ${CMAKE_CURRENT_SOURCE_DIR}/../3rdparty/gn)
set(GN_BINARY_DIR ${CMAKE_CURRENT_BINARY_DIR})
set(CMAKE_MODULE_PATH ${CMAKE_MODULE_PATH} "${CMAKE_CURRENT_SOURCE_DIR}/../../cmake")
find_package(Python2 REQUIRED)
find_package(Ninja 1.7.2 REQUIRED)
if(WIN32)
set(GN_EXECUTABLE gn.exe)
else()
set(GN_EXECUTABLE gn)
endif()
file(MAKE_DIRECTORY ${GN_BINARY_DIR})
add_custom_command(
OUTPUT ${GN_EXECUTABLE}
WORKING_DIRECTORY ${GN_BINARY_DIR}
COMMAND ${Python2_EXECUTABLE} ${GN_SOURCE_DIR}/build/gen.py
--no-last-commit-position
--out-path ${GN_BINARY_DIR}/$<CONFIG>
--cc ${CMAKE_C_COMPILER}
--cxx ${CMAKE_CXX_COMPILER}
--ld ${CMAKE_CXX_COMPILER}
$<$<PLATFORM_ID:Darwin>:--isysroot>
$<$<PLATFORM_ID:Darwin>:${CMAKE_OSX_SYSROOT}>
COMMAND Ninja::ninja -C ${GN_BINARY_DIR}/$<CONFIG> ${GN_EXECUTABLE}
VERBATIM
USES_TERMINAL
COMMAND_EXPAND_LISTS
)
add_custom_target(Gn ALL DEPENDS ${GN_EXECUTABLE})
install(FILES ${GN_BINARY_DIR}/$<CONFIG>/${GN_EXECUTABLE}
PERMISSIONS OWNER_READ OWNER_WRITE OWNER_EXECUTE
DESTINATION bin
)
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