zlib.cmake

# Copyright (c) 2023-present, Qihoo, Inc.  All rights reserved.
# This source code is licensed under the BSD-style license found in the
# LICENSE file in the root directory of this source tree. An additional grant
# of patent rights can be found in the PATENTS file in the same directory.

INCLUDE(ExternalProject)

SET(ZLIB_SOURCES_DIR ${THIRD_PARTY_PATH}/zlib)
SET(ZLIB_INSTALL_DIR ${THIRD_PARTY_PATH}/install/zlib)
# SET(ZLIB_ROOT ${ZLIB_INSTALL_DIR} CACHE FILEPATH "zlib root directory." FORCE)
# SET(ZLIB_INCLUDE_DIR "${ZLIB_INSTALL_DIR}/include" CACHE PATH "zlib include directory." FORCE)

ExternalProject_Add(
        extern_zlib
        ${EXTERNAL_PROJECT_LOG_ARGS}
        GIT_REPOSITORY  "https://github.com/madler/zlib.git"
        GIT_TAG         "v1.2.8"
        GIT_SHALLOW true
        PREFIX          ${ZLIB_SOURCES_DIR}
        UPDATE_COMMAND  ""
        CMAKE_ARGS      -DCMAKE_C_COMPILER=${CMAKE_C_COMPILER}
        -DCMAKE_CXX_COMPILER=${CMAKE_CXX_COMPILER}
        -DCMAKE_C_FLAGS=${CMAKE_C_FLAGS}
        -DCMAKE_CXX_FLAGS=${CMAKE_CXX_FLAGS}
        -DCMAKE_INSTALL_PREFIX=${ZLIB_INSTALL_DIR}
        -DCMAKE_INSTALL_LIBDIR=${ZLIB_INSTALL_DIR}/lib
        -DBUILD_SHARED_LIBS=OFF
        -DCMAKE_POSITION_INDEPENDENT_CODE=ON
        -DCMAKE_MACOSX_RPATH=ON
        -DCMAKE_BUILD_TYPE=${THIRD_PARTY_BUILD_TYPE}
        ${EXTERNAL_OPTIONAL_ARGS}
        CMAKE_CACHE_ARGS -DCMAKE_INSTALL_PREFIX:PATH=${ZLIB_INSTALL_DIR}
        -DCMAKE_INSTALL_LIBDIR:PATH=${ZLIB_INSTALL_DIR}/lib
        -DCMAKE_POSITION_INDEPENDENT_CODE:BOOL=ON
        -DCMAKE_BUILD_TYPE:STRING=${THIRD_PARTY_BUILD_TYPE}
)

SET(ZLIB_LIBRARIES "${ZLIB_INSTALL_DIR}/lib/libz.a" CACHE FILEPATH "zlib library." FORCE)

ADD_LIBRARY(zlib STATIC IMPORTED GLOBAL)
SET_PROPERTY(TARGET zlib PROPERTY IMPORTED_LOCATION ${ZLIB_LIBRARIES})
ADD_DEPENDENCIES(zlib extern_zlib)