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cuberite-2a/CheckLua.cmake

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CMake

# CheckLua.cmake
# Checks whether the Lua standalone interpreter is installed on the host system
# If found, sets HAS_LUA_INTERPRETER to 1 and LUA_INTERPRETER_VERSION to the version reported ("5.1" etc.)
# If not found, unsets HAS_LUA_INTERPRETER
execute_process(
COMMAND lua -e "io.stdout:write(string.match(_VERSION, '%d+%.%d+'))"
RESULT_VARIABLE LUA_EXECUTED
OUTPUT_VARIABLE LUA_INTERPRETER_VERSION
)
if ("${LUA_EXECUTED}" STREQUAL "0")
set(HAS_LUA_INTERPRETER 1)
else()
unset(HAS_LUA_INTERPRETER)
unset(LUA_INTERPRETER_VERSION)
endif()
unset(LUA_EXECUTED)