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set(DEPS_INSTALL_DIR "${CMAKE_BINARY_DIR}/usr")
set(DEPS_BIN_DIR "${DEPS_INSTALL_DIR}/bin")
set(DEPS_LIB_DIR "${DEPS_INSTALL_DIR}/lib")
set(DEPS_SHARE_DIR "${DEPS_INSTALL_DIR}/share/lua/5.1")
set(DEPS_BUILD_DIR "${CMAKE_BINARY_DIR}/build")
set(DEPS_DOWNLOAD_DIR "${DEPS_BUILD_DIR}/downloads")
set(DEPS_CMAKE_ARGS
-D CMAKE_C_COMPILER=${CMAKE_C_COMPILER}
-D CMAKE_C_STANDARD=99
-D CMAKE_GENERATOR=${CMAKE_GENERATOR}
-D CMAKE_GENERATOR_PLATFORM=${CMAKE_GENERATOR_PLATFORM}
-D BUILD_SHARED_LIBS=OFF
-D CMAKE_POSITION_INDEPENDENT_CODE=ON
-D CMAKE_INSTALL_PREFIX=${DEPS_INSTALL_DIR})
if(APPLE)
list(APPEND DEPS_CMAKE_ARGS -D CMAKE_FIND_FRAMEWORK=${CMAKE_FIND_FRAMEWORK})
endif()
find_program(CACHE_PRG NAMES ccache sccache)
mark_as_advanced(CACHE_PRG)
if(CACHE_PRG)
set(CMAKE_C_COMPILER_LAUNCHER ${CMAKE_COMMAND} -E env CCACHE_SLOPPINESS=pch_defines,time_macros ${CACHE_PRG})
list(APPEND DEPS_CMAKE_CACHE_ARGS -DCMAKE_C_COMPILER_LAUNCHER:STRING=${CMAKE_C_COMPILER_LAUNCHER})
endif()
# MAKE_PRG
if(UNIX)
find_program(MAKE_PRG NAMES gmake make)
mark_as_advanced(MAKE_PRG)
if(NOT MAKE_PRG)
message(FATAL_ERROR "GNU Make is required to build the dependencies.")
else()
message(STATUS "Found GNU Make at ${MAKE_PRG}")
endif()
endif()
# When using make, use the $(MAKE) variable to avoid warning about the job
# server.
if(CMAKE_GENERATOR MATCHES "Makefiles")
set(MAKE_PRG "$(MAKE)")
endif()
if(MINGW AND CMAKE_GENERATOR MATCHES "Ninja")
find_program(MAKE_PRG NAMES mingw32-make)
if(NOT MAKE_PRG)
message(FATAL_ERROR "GNU Make for mingw32 is required to build the dependencies.")
else()
message(STATUS "Found GNU Make for mingw32: ${MAKE_PRG}")
endif()
endif()
# DEPS_C_COMPILER
set(DEPS_C_COMPILER "${CMAKE_C_COMPILER}")
if(CMAKE_OSX_SYSROOT)
set(DEPS_C_COMPILER "${DEPS_C_COMPILER} -isysroot${CMAKE_OSX_SYSROOT}")
endif()
get_filename_component(rootdir ${PROJECT_SOURCE_DIR} NAME)
if(${rootdir} MATCHES "cmake.deps")
set(depsfile ${PROJECT_SOURCE_DIR}/deps.txt)
else()
set(depsfile ${PROJECT_SOURCE_DIR}/cmake.deps/deps.txt)
endif()
set_directory_properties(PROPERTIES
EP_PREFIX "${DEPS_BUILD_DIR}"
CMAKE_CONFIGURE_DEPENDS ${depsfile})
file(READ ${depsfile} DEPENDENCIES)
STRING(REGEX REPLACE "\n" ";" DEPENDENCIES "${DEPENDENCIES}")
foreach(dep ${DEPENDENCIES})
STRING(REGEX REPLACE " " ";" dep "${dep}")
list(GET dep 0 name)
list(GET dep 1 value)
if(NOT ${name})
# _URL variables must NOT be set when USE_EXISTING_SRC_DIR is set,
# otherwise ExternalProject will try to re-download the sources.
if(NOT USE_EXISTING_SRC_DIR)
set(${name} ${value})
endif()
endif()
endforeach()
function(get_externalproject_options name DEPS_IGNORE_SHA)
string(TOUPPER ${name} name_allcaps)
set(url ${${name_allcaps}_URL})
set(EXTERNALPROJECT_OPTIONS
DOWNLOAD_NO_PROGRESS TRUE
EXTERNALPROJECT_OPTIONS URL ${${name_allcaps}_URL}
CMAKE_CACHE_ARGS ${DEPS_CMAKE_CACHE_ARGS})
if(NOT ${DEPS_IGNORE_SHA})
list(APPEND EXTERNALPROJECT_OPTIONS URL_HASH SHA256=${${name_allcaps}_SHA256})
endif()
set(EXTERNALPROJECT_OPTIONS ${EXTERNALPROJECT_OPTIONS} PARENT_SCOPE)
endfunction()
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