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External_zlib.cmake
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External_zlib.cmake
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# An external project for zlib
set(zlib_source "${CMAKE_CURRENT_BINARY_DIR}/zlib-src")
set(zlib_build "${CMAKE_CURRENT_BINARY_DIR}/zlib")
set(zlib_install "${OpenChemistry_INSTALL_PREFIX}")
# If Windows we use CMake, otherwise ./configure
if(WIN32)
get_filename_component(_self_dir ${CMAKE_CURRENT_LIST_FILE} PATH)
ExternalProject_Add(zlib
DOWNLOAD_DIR ${download_dir}
SOURCE_DIR ${zlib_source}
BINARY_DIR ${zlib_build}
INSTALL_DIR ${zlib_install}
URL ${zlib_url}
URL_MD5 ${zlib_md5}
PATCH_COMMAND ${CMAKE_COMMAND} -E remove <SOURCE_DIR>/zconf.h
COMMAND ${CMAKE_COMMAND} -E copy_if_different
"${_self_dir}/zlib.CMakeLists.txt"
"<SOURCE_DIR>/CMakeLists.txt"
COMMAND ${CMAKE_COMMAND} -E copy_if_different
"${_self_dir}/zlib.gzguts.h"
"<SOURCE_DIR>/gzguts.h"
CMAKE_CACHE_ARGS
-DCMAKE_CXX_FLAGS:STRING=${pv_tpl_cxx_flags}
-DCMAKE_C_FLAGS:STRING=${pv_tpl_c_flags}
-DCMAKE_BUILD_TYPE:STRING=${CMAKE_CFG_INTDIR}
${pv_tpl_compiler_args}
${zlib_EXTRA_ARGS}
CMAKE_ARGS
-DCMAKE_INSTALL_PREFIX:PATH=<INSTALL_DIR>)
# the zlib library should be named zlib1.lib not zlib.lib
ExternalProject_Add_Step(zlib RenameLib
COMMAND ${CMAKE_COMMAND} -E copy "${zlib_install}/lib/zlib.lib"
"${zlib_install}/lib/zlib1.lib"
DEPENDEES install)
else()
ExternalProject_Add(zlib
DOWNLOAD_DIR ${download_dir}
SOURCE_DIR ${zlib_source}
INSTALL_DIR ${zlib_install}
URL ${zlib_url}
URL_MD5 ${zlib_md5}
BUILD_IN_SOURCE 1
CONFIGURE_COMMAND <SOURCE_DIR>/configure --prefix=<INSTALL_DIR>)
endif()
set(ZLIB_INCLUDE_DIR "${zlib_install}/include" CACHE INTERNAL "")
if(WIN32)
set(ZLIB_LIBRARY "${zlib_install}/lib/zlib1.${link_library_suffix}"
CACHE INTERNAL "")
else()
set(ZLIB_LIBRARY "${zlib_install}/lib/libz.${link_library_suffix}"
CACHE INTERNAL "")
endif()