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 # CMakeLists.txt file for LUA - 2026-02-06
 #
 cmake_minimum_required(VERSION 3.15)
 
 # Rather than being hardcoded here in the "project" command, the LUA version
 # is derived from project files. Hence, we set the CMP0048 policy to suppress
 # CMake warning messages.
 #
 cmake_policy(SET CMP0048 NEW)
 
 project(lua C)
 
 include(GNUInstallDirs)
 
 # Reads macro from a header file which is expected to be a single-line define.
 #
 function(read_macro PATH MACRO OUTPUT)
   file(STRINGS ${PATH} _line LIMIT_COUNT 1 REGEX "^#define +${MACRO}")
   string(REGEX REPLACE "^.+\"?([0-9])\"?.*" "\\1" _val "${_line}")
   set(${OUTPUT} ${_val} PARENT_SCOPE)
 endfunction(read_macro)
 
 # Obtain project version information from lua.h file.
 #
 read_macro("src/lua.h" "LUA_VERSION_MAJOR" LUA_VERSION_MAJOR)
 read_macro("src/lua.h" "LUA_VERSION_MINOR" LUA_VERSION_MINOR)
 read_macro("src/lua.h" "LUA_VERSION_RELEASE" LUA_VERSION_RELEASE)
 set(LUA_VERSION "${LUA_VERSION_MAJOR}.${LUA_VERSION_MINOR}.${LUA_VERSION_RELEASE}")
 
 message(STATUS "LUA version is ${LUA_VERSION}")
 
 # Define LUA_SUFFIX for Windows build.
 #
 set(LUA_SUFFIX)
 if(MSVC)
   set(LUA_SUFFIX "${LUA_VERSION_MAJOR}${LUA_VERSION_MINOR}")
   message(STATUS "LUA suffix is ${LUA_SUFFIX}")
 endif()
 
 include_directories(src ${CMAKE_CURRENT_BINARY_DIR})
 
 # Define source files.
 #
 set(SRC_CORE src/lapi.c src/lcode.c src/lctype.c src/ldebug.c src/ldo.c src/ldump.c src/lfunc.c
   src/lgc.c src/llex.c src/lmem.c src/lobject.c src/lopcodes.c src/lparser.c src/lstate.c
   src/lstring.c src/ltable.c src/ltm.c src/lundump.c src/lvm.c src/lzio.c)
 
 set(SRC_LIB src/lauxlib.c src/lbaselib.c src/lcorolib.c src/ldblib.c src/liolib.c src/lmathlib.c
   src/loslib.c src/lstrlib.c src/ltablib.c src/lutf8lib.c src/loadlib.c src/linit.c)
 
 set(SRC_LUA src/lua.c)
 set(SRC_LUAC src/luac.c)
 
 set(LUA_INCLUDES src/lua.h src/lualib.h src/lauxlib.h src/lua.hpp src/luaconf.h)
 
 # Check for maths library (needed for Linux builds).
 #
 include(CheckLibraryExists)
 set(LIBM_LIBRARY)
 CHECK_LIBRARY_EXISTS(m log2 "" HAVE_LIB_M)
 if(HAVE_LIB_M)
   set(LIBM_LIBRARY "m")
 endif()
 
 # Define static library build.
 #
 add_library(liblua-static ${SRC_CORE} ${SRC_LIB})
 set_target_properties(liblua-static PROPERTIES OUTPUT_NAME lua)
 
 # Define shared library build.
 #
 add_library(liblua-shared SHARED ${SRC_CORE} ${SRC_LIB})
 set_target_properties(liblua-shared PROPERTIES OUTPUT_NAME lua${LUA_SUFFIX}
   VERSION "${LUA_VERSION}" SOVERSION "${LUA_VERSION_MAJOR}")
 
 if(WIN32)
   target_compile_definitions(liblua-shared PRIVATE _CRT_SECURE_NO_WARNINGS LUA_BUILD_AS_DLL LUA_COMPAT_ALL)
 endif()
 
 # Define executables build.
 #
 add_executable(lua ${SRC_LUA})
 target_link_libraries(lua liblua-shared ${LIBM_LIBRARY})
 if(NOT WIN32)
   # Set runtime library path for the lua executable.
   #
   set_target_properties(lua PROPERTIES
     INSTALL_RPATH "${CMAKE_INSTALL_PREFIX}/lib"
     BUILD_WITH_INSTALL_RPATH TRUE)
 endif()
 
 add_executable(luac ${SRC_LUAC})
 target_link_libraries(luac liblua-static ${LIBM_LIBRARY})
 
 # Installation
 #
 if(NOT BUNDLED_MODE)
   install(
     TARGETS lua
     RUNTIME DESTINATION "${CMAKE_INSTALL_BINDIR}"
   )
 
   install(
     TARGETS luac
     RUNTIME DESTINATION "${CMAKE_INSTALL_BINDIR}"
   )
 
   install(
     TARGETS liblua-static
     ARCHIVE DESTINATION "${CMAKE_INSTALL_LIBDIR}"
     LIBRARY DESTINATION "${CMAKE_INSTALL_LIBDIR}"
     RUNTIME DESTINATION "${CMAKE_INSTALL_BINDIR}"
   )
 
   install(
     TARGETS liblua-shared
     ARCHIVE DESTINATION "${CMAKE_INSTALL_LIBDIR}"
     LIBRARY DESTINATION "${CMAKE_INSTALL_LIBDIR}"
     RUNTIME DESTINATION "${CMAKE_INSTALL_BINDIR}"
   )
 
   install(
     FILES ${LUA_INCLUDES}
     DESTINATION "${CMAKE_INSTALL_INCLUDEDIR}"
   )
 endif()