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#==============================================================================
# FILE: smr_utils.cmake
# Created: Dec 31, 2018 Mon
#==============================================================================
#
# Edit rocksdb/thirdparty.inc file to configure ZLIB dependency
#
# CMake REGEX only handles 'greedy' matches making it necessary to process the file
# line by line when using 'relaxed' matches. For comparison 'rocksdb_edit_3rdparty_inc_2'
# uses stricter REGEX allowing to search the whole file in one shot.
#
# TODO: This function could be made more compact by calling a macro from 'foreach' loop.
#
function(rocksdb_edit_3rdparty_inc)
file(RENAME ${ROCKSDB_SRC}/thirdparty.inc ${ROCKSDB_SRC}/_thirdparty.inc)
file(READ ${ROCKSDB_SRC}/_thirdparty.inc file_in)
file(STRINGS ${ROCKSDB_SRC}/_thirdparty.inc lines)
list(LENGTH lines _len)
message("list length: ${_len}")
list(GET lines 0 _line)
message("line: ${_line}")
set(zlib_home_done 0)
set(zlib_include_done 0)
set(zlib_lib_debug_done 0)
set(zlib_lib_release_done 0)
foreach(_line IN LISTS lines)
# ERROR: string sub-command REGEX, mode MATCH needs at least 5 arguments total to command.
# Seems to be a CMake bug. Doesn't work in the loop
# Erroneously created issue at https://github.com/facebook/rocksdb/issues/4826 - closed
# Opened issue: https://gitlab.kitware.com/cmake/cmake/issues/18737
# The problem was the unquoted ${_line} i.e. always use "${_line}" to generate
# an empty string in case _line is Empty/Null
if(NOT zlib_home_done)
string(REGEX MATCH "set\\(ZLIB_HOME (.+)\\)" _mm "${_line}")
if(_mm)
message("mm: ${_mm}")
message("CMAKE_MATCH_1: ${CMAKE_MATCH_1}")
string(LENGTH "${CMAKE_MATCH_1}" _len)
if(_len GREATER 0)
string(REPLACE "${CMAKE_MATCH_1}" "${ZLIB_ROOT}" _out "${_line}")
set(zlib_home_done 1)
message("ZLIB_HOME Done _out: ${_out}")
file(APPEND ${ROCKSDB_SRC}/thirdparty.inc "${_out}\n")
unset(_out)
unset(_mm)
unset(_len)
continue()
endif()
endif()
endif()
if(NOT zlib_include_done)
string(REGEX MATCH "set\\(ZLIB_INCLUDE (.+)\\)" _mm "${_line}")
if(_mm)
string(LENGTH "${CMAKE_MATCH_1}" _len)
if(_len GREATER 0)
string(REPLACE "${CMAKE_MATCH_1}" "\${ZLIB_HOME}/include" _out "${_line}")
set(zlib_include_done 1)
message("ZLIB_INCLUDE Done _out: ${_out}")
file(APPEND ${ROCKSDB_SRC}/thirdparty.inc "${_out}\n")
unset(_out)
unset(_mm)
unset(_len)
continue()
endif()
endif()
endif()
if(NOT zlib_lib_debug_done)
string(REGEX MATCH "set\\(ZLIB_LIB_DEBUG (.+)\\)" _mm "${_line}")
if(_mm)
string(LENGTH "${CMAKE_MATCH_1}" _len)
if(_len GREATER 0)
if(WIN32)
string(REPLACE "${CMAKE_MATCH_1}" "\${ZLIB_HOME}/lib/zlibstaticd.lib" _out "${_line}")
else()
string(REPLACE "${CMAKE_MATCH_1}" "\${ZLIB_HOME}/lib/libz.a" _out "${_line}")
endif()
set(zlib_lib_debug_done 1)
message("ZLIB_LIB_DEBUG Done _out: ${_out}")
file(APPEND ${ROCKSDB_SRC}/thirdparty.inc "${_out}\n")
unset(_out)
unset(_mm)
unset(_len)
continue()
endif()
endif()
endif()
if(NOT zlib_lib_release_done)
string(REGEX MATCH "set\\(ZLIB_LIB_RELEASE (.+)\\)" _mm "${_line}")
if(_mm)
string(LENGTH "${CMAKE_MATCH_1}" _len)
if(_len GREATER 0)
if(WIN32)
string(REPLACE "${CMAKE_MATCH_1}" "\${ZLIB_HOME}/lib/zlibstatic.lib" _out "${_line}")
else()
string(REPLACE "${CMAKE_MATCH_1}" "\${ZLIB_HOME}/lib/libz.a" _out "${_line}")
endif()
set(zlib_lib_release_done 1)
message("ZLIB_LIB_RELEASE Done _out: ${_out}")
file(APPEND ${ROCKSDB_SRC}/thirdparty.inc "${_out}\n")
unset(_out)
unset(_mm)
unset(_len)
continue()
endif()
endif()
endif()
file(APPEND ${ROCKSDB_SRC}/thirdparty.inc "${_line}\n")
endforeach()
endfunction(rocksdb_edit_3rdparty_inc)
#
# Edit rocksdb/thirdparty.inc file to configure ZLIB dependency
#
# NOTE: Does the same as 'rocksdb_edit_3rdparty_inc' above using stricter REGEX, which simplifies
# the code but makes it less flexible in case 'thirdparty.inc' is ever modified causing
# the strict regex to fail
#
function(rocksdb_edit_3rdparty_inc_2)
# 1. Backup the existing file
file(RENAME ${ROCKSDB_SRC}/thirdparty.inc ${ROCKSDB_SRC}/_thirdparty.inc)
# 2, Read the file
file(READ ${ROCKSDB_SRC}/_thirdparty.inc file_in)
# 3. Replace the lines
string(REPLACE "set(ZLIB_HOME \$ENV{THIRDPARTY_HOME}/ZLIB.Library)" "set(ZLIB_HOME ${ZLIB_ROOT})" _out ${file_in})
string(REPLACE "set(ZLIB_INCLUDE \${ZLIB_HOME}/build/native/inc/inc)" "set(ZLIB_INCLUDE ${ZLIB_ROOT}/include)" _out ${_out})
if(WIN32)
string(REPLACE "set(ZLIB_LIB_DEBUG \${ZLIB_HOME}/lib/native/debug/amd64/zlib.lib)" "set(ZLIB_LIB_DEBUG ${ZLIB_ROOT}/lib/zlibstaticd.lib)" _out ${_out})
string(REPLACE "set(ZLIB_LIB_RELEASE \${ZLIB_HOME}/lib/native/retail/amd64/zlib.lib)" "set(ZLIB_LIB_RELEASE ${ZLIB_ROOT}/lib/zlibstaticd.lib)" _out ${_out})
else()
string(REPLACE "set(ZLIB_LIB_DEBUG \${ZLIB_HOME}/lib/native/debug/amd64/zlib.lib)" "set(ZLIB_LIB_DEBUG ${ZLIB_ROOT}/lib/libz.a)" _out ${_out})
string(REPLACE "set(ZLIB_LIB_RELEASE \${ZLIB_HOME}/lib/native/retail/amd64/zlib.lib" "set(ZLIB_LIB_RELEASE ${ZLIB_ROOT}/lib/libz.a)" _out ${_out})
endif()
# Write the new file
file(WRITE ${ROCKSDB_SRC}/thirdparty.inc ${_out})
endfunction(rocksdb_edit_3rdparty_inc_2)
#
# added 20190307
# REF:
# 1. [ cmake: target_link_libraries use static library not shared ](https://stackoverflow.com/questions/36754160/cmake-target-link-libraries-use-static-library-not-shared)
# 2. [ CMake: how to produce binaries "as static as possible" ](https://stackoverflow.com/questions/3762057/cmake-how-to-produce-binaries-as-static-as-possible)
#
function(find_static_library LIB_NAME OUT)
if (WIN32 OR MSVC)
set(CMAKE_FIND_LIBRARY_SUFFIXES ".lib")
elseif (UNIX)
set(CMAKE_FIND_LIBRARY_SUFFIXES ".a")
endif()
find_library(
FOUND_${LIB_NAME}_STATIC
${LIB_NAME}
)
if (FOUND_${LIB_NAME}_STATIC)
get_filename_component(ABS_FILE ${FOUND_${LIB_NAME}_STATIC} ABSOLUTE)
else()
message(SEND_ERROR "Unable to find library ${LIB_NAME}")
endif()
set(${OUT} ${ABS_FILE} PARENT_SCOPE)
endfunction(find_static_library)
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