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luajit: fix aarch64 cross-compile #2480

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luajit: fix aarch64 cross-compile #2480

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29 changes: 28 additions & 1 deletion src/lua/CMakeLists.txt
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Expand Up @@ -13,9 +13,36 @@ if (LUAJIT_LIBRARIES AND LUAJIT)
DEPENDS ${SRC_LUA} ${CMAKE_CURRENT_SOURCE_DIR}/squishy
)

# LuaJIT doesn't use usual arch naming, so we have to convert
# between CMake and Luajit while cross-compiling.
if (CMAKE_CROSSCOMPILING)
SET (LUAJIT_TARGET_ARCH "-a")
# https://github.com/LuaJIT/LuaJIT/blob/f0e865dd4861520258299d0f2a56491bd9d602e1/src/jit/bcsave.lua#L30
# https://github.com/LuaJIT/LuaJIT/blob/f0e865dd4861520258299d0f2a56491bd9d602e1/src/jit/bcsave.lua#L65
if (CMAKE_SYSTEM_PROCESSOR STREQUAL "aarch64")
SET (LUAJIT_TARGET_ARCH ${LUAJIT_TARGET_ARCH} "arm64")
elseif (CMAKE_SYSTEM_PROCESSOR MATCHES "aarch64_be")
SET (LUAJIT_TARGET_ARCH ${LUAJIT_TARGET_ARCH} "arm64be")
elseif (CMAKE_SYSTEM_PROCESSOR MATCHES "arm")
SET (LUAJIT_TARGET_ARCH ${LUAJIT_TARGET_ARCH} "arm")
elseif (CMAKE_SYSTEM_PROCESSOR MATCHES "^(i.86)$")
SET (LUAJIT_TARGET_ARCH ${LUAJIT_TARGET_ARCH} "x86")
elseif (CMAKE_SYSTEM_PROCESSOR MATCHES "mips")
SET (LUAJIT_TARGET_ARCH ${LUAJIT_TARGET_ARCH} "mips")
elseif (CMAKE_SYSTEM_PROCESSOR MATCHES "mipsel")
SET (LUAJIT_TARGET_ARCH ${LUAJIT_TARGET_ARCH} "mipsel")
elseif (CMAKE_SYSTEM_PROCESSOR MATCHES "powerpc")
SET (LUAJIT_TARGET_ARCH ${LUAJIT_TARGET_ARCH} "ppc")
elseif (CMAKE_SYSTEM_PROCESSOR MATCHES "x86_64")
SET (LUAJIT_TARGET_ARCH ${LUAJIT_TARGET_ARCH} "x64")
else()
MESSAGE(FATAL_ERROR "${CMAKE_SYSTEM_PROCESSOR} is not supported by LuaJIT")
endif()
endif()

ADD_CUSTOM_COMMAND(
OUTPUT bcc.o
COMMAND ${LUAJIT} -bg bcc.lua bcc.o
COMMAND ${LUAJIT} -bg bcc.lua ${LUAJIT_TARGET_ARCH} bcc.o
DEPENDS bcc.lua
)

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