cmake/lua.cmake

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# regarding copyright ownership.  The ASF licenses this file
# to you under the Apache License, Version 2.0 (the
# "License"); you may not use this file except in compliance
# with the License.  You may obtain a copy of the License at
#
#   http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing,
# software distributed under the License is distributed on an
# "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
# KIND, either express or implied.  See the License for the
# specific language governing permissions and limitations
# under the License.

include_guard()

include(cmake/utils.cmake)

FetchContent_DeclareGitHubWithMirror(lua
  RocksLabs/lua f458c3d797db31155fa0c156d5301716df48cb8c
  MD5=c7c4deb9f750d8f2bef0044a701df85c
)

FetchContent_GetProperties(lua)
if(NOT lua_POPULATED)
  FetchContent_Populate(lua)

  set(LUA_CXX ${CMAKE_CXX_COMPILER})
  set(LUA_CFLAGS "-DLUA_ANSI -DENABLE_CJSON_GLOBAL -DREDIS_STATIC= -DLUA_USE_MKSTEMP")
  if(CMAKE_CXX_COMPILER_ID STREQUAL "AppleClang")
    set(LUA_CFLAGS "${LUA_CFLAGS} -isysroot ${CMAKE_OSX_SYSROOT}")
  endif()

  add_custom_target(make_lua COMMAND ${MAKE_COMMAND} "CC=${LUA_CXX}" "CFLAGS=${LUA_CFLAGS}" ${NINJA_MAKE_JOBS_FLAG} liblua.a
    WORKING_DIRECTORY ${lua_SOURCE_DIR}/src
    BYPRODUCTS ${lua_SOURCE_DIR}/src/liblua.a
  )

  file(GLOB LUA_PUBLIC_HEADERS "${lua_SOURCE_DIR}/src/*.h" "${lua_SOURCE_DIR}/src/*.hpp")
  file(COPY ${LUA_PUBLIC_HEADERS} DESTINATION ${lua_BINARY_DIR}/include)
endif()

add_library(lua INTERFACE)
target_include_directories(lua INTERFACE ${lua_BINARY_DIR}/include)
target_link_libraries(lua INTERFACE ${lua_SOURCE_DIR}/src/liblua.a)
add_dependencies(lua make_lua)