1# if CMAKE_LIBTOOL is not set, try and find it with xcrun or find_program
2if(NOT CMAKE_LIBTOOL)
3  if(NOT CMAKE_XCRUN)
4    find_program(CMAKE_XCRUN NAMES xcrun)
5  endif()
6  if(CMAKE_XCRUN)
7    execute_process(COMMAND ${CMAKE_XCRUN} -find libtool
8      OUTPUT_VARIABLE CMAKE_LIBTOOL
9      OUTPUT_STRIP_TRAILING_WHITESPACE)
10  endif()
11
12  if(NOT CMAKE_LIBTOOL OR NOT EXISTS CMAKE_LIBTOOL)
13    find_program(CMAKE_LIBTOOL NAMES libtool)
14  endif()
15endif()
16
17get_property(languages GLOBAL PROPERTY ENABLED_LANGUAGES)
18if(CMAKE_LIBTOOL)
19  set(CMAKE_LIBTOOL ${CMAKE_LIBTOOL} CACHE PATH "libtool executable")
20  message(STATUS "Found libtool - ${CMAKE_LIBTOOL}")
21
22  execute_process(COMMAND ${CMAKE_LIBTOOL} -V
23    OUTPUT_VARIABLE LIBTOOL_V_OUTPUT
24    OUTPUT_STRIP_TRAILING_WHITESPACE)
25  if("${LIBTOOL_V_OUTPUT}" MATCHES ".*cctools-([0-9.]+).*")
26    string(REGEX REPLACE ".*cctools-([0-9.]+).*" "\\1" LIBTOOL_VERSION
27      ${LIBTOOL_V_OUTPUT})
28    if(NOT LIBTOOL_VERSION VERSION_LESS "862")
29      set(LIBTOOL_NO_WARNING_FLAG "-no_warning_for_no_symbols")
30    endif()
31  endif()
32
33  foreach(lang ${languages})
34    set(CMAKE_${lang}_CREATE_STATIC_LIBRARY
35      "\"${CMAKE_LIBTOOL}\" -static ${LIBTOOL_NO_WARNING_FLAG} -o <TARGET> <LINK_FLAGS> <OBJECTS>")
36  endforeach()
37
38  # By default, CMake invokes ranlib on a static library after installing it.
39  # libtool will have produced the table of contents for us already, and ranlib
40  # does not understanding universal binaries, so skip this step. It's important
41  # to set it to empty instead of unsetting it to shadow the cache variable, and
42  # we don't want to unset the cache variable to not affect anything outside
43  # this scope.
44  set(CMAKE_RANLIB "")
45endif()
46
47# If DYLD_LIBRARY_PATH is set we need to set it on archiver commands
48if(DYLD_LIBRARY_PATH)
49  set(dyld_envar "DYLD_LIBRARY_PATH=${DYLD_LIBRARY_PATH}")
50  foreach(lang ${languages})
51    foreach(cmd ${CMAKE_${lang}_CREATE_STATIC_LIBRARY})
52      list(APPEND CMAKE_${lang}_CREATE_STATIC_LIBRARY_NEW
53           "${dyld_envar} ${cmd}")
54    endforeach()
55    set(CMAKE_${lang}_CREATE_STATIC_LIBRARY
56      ${CMAKE_${lang}_CREATE_STATIC_LIBRARY_NEW})
57  endforeach()
58endif()
59