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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()
# MAKE_PRG
if(UNIX)
find_program(MAKE_PRG NAMES gmake make)
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()
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)
if(EXISTS ${url})
list(APPEND EXTERNALPROJECT_OPTIONS
GIT_REPOSITORY ${${name_allcaps}_URL})
if(${CMAKE_VERSION} VERSION_GREATER_EQUAL 3.18)
list(APPEND EXTERNALPROJECT_OPTIONS GIT_REMOTE_UPDATE_STRATEGY CHECKOUT)
endif()
else()
list(APPEND EXTERNALPROJECT_OPTIONS URL ${${name_allcaps}_URL})
if(NOT ${DEPS_IGNORE_SHA})
list(APPEND EXTERNALPROJECT_OPTIONS URL_HASH SHA256=${${name_allcaps}_SHA256})
endif()
endif()
set(EXTERNALPROJECT_OPTIONS ${EXTERNALPROJECT_OPTIONS} PARENT_SCOPE)
endfunction()
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