CMakeLists.txt

   1 # Distributed under the OSI-approved BSD 3-Clause License.  See accompanying
   2 # file Copyright.txt or https://cmake.org/licensing for details.
   3
   4 cmake_minimum_required(VERSION 3.1...3.15 FATAL_ERROR)
   5 set(CMAKE_USER_MAKE_RULES_OVERRIDE_C ${CMAKE_CURRENT_SOURCE_DIR}/Source/Modules/OverrideC.cmake)
   6 set(CMAKE_USER_MAKE_RULES_OVERRIDE_CXX ${CMAKE_CURRENT_SOURCE_DIR}/Source/Modules/OverrideCXX.cmake)
   7 project(CMake)
   8 unset(CMAKE_USER_MAKE_RULES_OVERRIDE_CXX)
   9 unset(CMAKE_USER_MAKE_RULES_OVERRIDE_C)
  10
  11 # FIXME: This block should go away after a transition period.
  12 if(MSVC AND NOT CMAKE_VERSION VERSION_LESS 3.15)
  13   # Filter out MSVC runtime library flags that may have come from
  14   # the cache of an existing build tree or from scripts.
  15   foreach(l C CXX)
  16     foreach(c DEBUG MINSIZEREL RELEASE RELWITHDEBINFO)
  17       string(REGEX REPLACE "[-/]M[DT]d?( |$)" "" "CMAKE_${l}_FLAGS_${c}" "${CMAKE_${l}_FLAGS_${c}}")
  18     endforeach()
  19   endforeach()
  20 endif()
  21
  22 # Make sure we can find internal find_package modules only used for
  23 # building CMake and not for shipping externally
  24 list(INSERT CMAKE_MODULE_PATH 0 ${CMake_SOURCE_DIR}/Source/Modules)
  25
  26 if(CMAKE_BOOTSTRAP)
  27   # Running from bootstrap script.  Set local variable and remove from cache.
  28   set(CMAKE_BOOTSTRAP 1)
  29   unset(CMAKE_BOOTSTRAP CACHE)
  30 endif()
  31
  32 if(CMake_TEST_HOST_CMAKE)
  33   get_filename_component(CMake_TEST_EXTERNAL_CMAKE "${CMAKE_COMMAND}" DIRECTORY)
  34 endif()
  35
  36 if(NOT CMake_TEST_EXTERNAL_CMAKE)
  37   if(CMAKE_SYSTEM_NAME STREQUAL "HP-UX")
  38     message(FATAL_ERROR
  39       "CMake no longer compiles on HP-UX.  See\n"
  40       "  https://gitlab.kitware.com/cmake/cmake/issues/17137\n"
  41       "Use CMake 3.9 or lower instead."
  42       )
  43   endif()
  44
  45   set(CMake_BIN_DIR ${CMake_BINARY_DIR}/bin)
  46 endif()
  47
  48 if(CMake_GUI_DISTRIBUTE_WITH_Qt_LGPL)
  49   if(CMake_GUI_DISTRIBUTE_WITH_Qt_LGPL MATCHES "^3|2\\.1$")
  50     set(USE_LGPL "${CMake_GUI_DISTRIBUTE_WITH_Qt_LGPL}")
  51   else()
  52     set(USE_LGPL "2.1")
  53   endif()
  54 else()
  55   set(USE_LGPL "")
  56 endif()
  57
  58 if("${CMake_SOURCE_DIR}" STREQUAL "${CMAKE_SOURCE_DIR}")
  59   # Disallow architecture-specific try_run.  It may not run on the host.
  60   macro(TRY_RUN)
  61     if(CMAKE_TRY_COMPILE_OSX_ARCHITECTURES)
  62       message(FATAL_ERROR "TRY_RUN not allowed with CMAKE_TRY_COMPILE_OSX_ARCHITECTURES=[${CMAKE_TRY_COMPILE_OSX_ARCHITECTURES}]")
  63     else()
  64       _TRY_RUN(${ARGV})
  65     endif()
  66   endmacro()
  67 endif()
  68
  69 # Use most-recent available language dialects with GNU and Clang
  70 if(NOT DEFINED CMAKE_C_STANDARD AND NOT CMake_NO_C_STANDARD)
  71   include(${CMake_SOURCE_DIR}/Source/Checks/cm_c11_thread_local.cmake)
  72   if(NOT CMake_C11_THREAD_LOCAL_BROKEN)
  73     set(CMAKE_C_STANDARD 11)
  74   else()
  75     set(CMAKE_C_STANDARD 99)
  76   endif()
  77 endif()
  78 if(NOT DEFINED CMAKE_CXX_STANDARD AND NOT CMake_NO_CXX_STANDARD)
  79   if (CMAKE_CXX_COMPILER_ID STREQUAL SunPro AND CMAKE_CXX_COMPILER_VERSION VERSION_LESS 5.14)
  80     set(CMAKE_CXX_STANDARD 98)
  81   else()
  82     if(NOT CMAKE_VERSION VERSION_LESS 3.8)
  83       include(${CMake_SOURCE_DIR}/Source/Checks/cm_cxx17_check.cmake)
  84     else()
  85       set(CMake_CXX17_BROKEN 1)
  86     endif()
  87     if(NOT CMake_CXX17_BROKEN)
  88       set(CMAKE_CXX_STANDARD 17)
  89     else()
  90       include(${CMake_SOURCE_DIR}/Source/Checks/cm_cxx14_check.cmake)
  91       if(NOT CMake_CXX14_BROKEN)
  92         set(CMAKE_CXX_STANDARD 14)
  93       else()
  94         set(CMAKE_CXX_STANDARD 11)
  95       endif()
  96     endif()
  97   endif()
  98 endif()
  99 if(NOT CMake_TEST_EXTERNAL_CMAKE)
 100   # include special compile flags for some compilers
 101   include(CompileFlags.cmake)
 102
 103   # check for available C++ features
 104   include(${CMake_SOURCE_DIR}/Source/Checks/cm_cxx_features.cmake)
 105
 106   if(NOT CMake_HAVE_CXX_UNIQUE_PTR)
 107     message(FATAL_ERROR "The C++ compiler does not support C++11 (e.g. std::unique_ptr).")
 108   endif()
 109 endif()
 110
 111 # set the internal encoding of CMake to UTF-8
 112 set(KWSYS_ENCODING_DEFAULT_CODEPAGE CP_UTF8)
 113
 114 # option to use COMPONENT with install command
 115 option(CMake_INSTALL_COMPONENTS "Using components when installing" OFF)
 116 mark_as_advanced(CMake_INSTALL_COMPONENTS)
 117 macro(CMake_OPTIONAL_COMPONENT NAME)
 118   if(CMake_INSTALL_COMPONENTS)
 119     set(COMPONENT COMPONENT ${NAME})
 120   else()
 121     set(COMPONENT)
 122   endif()
 123 endmacro()
 124
 125 # option to disable installing 3rd-party dependencies
 126 option(CMake_INSTALL_DEPENDENCIES
 127   "Whether to install 3rd-party runtime dependencies" OFF)
 128 mark_as_advanced(CMake_INSTALL_DEPENDENCIES)
 129
 130 # option to build reference for CMake developers
 131 option(CMake_BUILD_DEVELOPER_REFERENCE
 132   "Build CMake Developer Reference" OFF)
 133 mark_as_advanced(CMake_BUILD_DEVELOPER_REFERENCE)
 134
 135 # option to build using interprocedural optimizations (IPO/LTO)
 136 if (NOT CMAKE_VERSION VERSION_LESS 3.12.2)
 137   option(CMake_BUILD_LTO "Compile CMake with link-time optimization if supported" OFF)
 138   if(CMake_BUILD_LTO)
 139     include(CheckIPOSupported)
 140     check_ipo_supported(RESULT HAVE_IPO)
 141     if(HAVE_IPO)
 142       set(CMAKE_INTERPROCEDURAL_OPTIMIZATION TRUE)
 143     endif()
 144   endif()
 145 endif()
 146
 147 #-----------------------------------------------------------------------
 148 # a macro to deal with system libraries, implemented as a macro
 149 # simply to improve readability of the main script
 150 #-----------------------------------------------------------------------
 151 macro(CMAKE_HANDLE_SYSTEM_LIBRARIES)
 152   # Options have dependencies.
 153   include(CMakeDependentOption)
 154
 155   # Allow the user to enable/disable all system utility library options by
 156   # defining CMAKE_USE_SYSTEM_LIBRARIES or CMAKE_USE_SYSTEM_LIBRARY_${util}.
 157   set(UTILITIES BZIP2 CURL EXPAT FORM JSONCPP LIBARCHIVE LIBLZMA LIBRHASH LIBUV ZLIB ZSTD)
 158   foreach(util ${UTILITIES})
 159     if(NOT DEFINED CMAKE_USE_SYSTEM_LIBRARY_${util}
 160         AND DEFINED CMAKE_USE_SYSTEM_LIBRARIES)
 161       set(CMAKE_USE_SYSTEM_LIBRARY_${util} "${CMAKE_USE_SYSTEM_LIBRARIES}")
 162     endif()
 163     if(DEFINED CMAKE_USE_SYSTEM_LIBRARY_${util})
 164       if(CMAKE_USE_SYSTEM_LIBRARY_${util})
 165         set(CMAKE_USE_SYSTEM_LIBRARY_${util} ON)
 166       else()
 167         set(CMAKE_USE_SYSTEM_LIBRARY_${util} OFF)
 168       endif()
 169       if(CMAKE_BOOTSTRAP)
 170         unset(CMAKE_USE_SYSTEM_LIBRARY_${util} CACHE)
 171       endif()
 172       string(TOLOWER "${util}" lutil)
 173       set(CMAKE_USE_SYSTEM_${util} "${CMAKE_USE_SYSTEM_LIBRARY_${util}}"
 174         CACHE BOOL "Use system-installed ${lutil}" FORCE)
 175     else()
 176       set(CMAKE_USE_SYSTEM_LIBRARY_${util} OFF)
 177     endif()
 178   endforeach()
 179   if(CMAKE_BOOTSTRAP)
 180     unset(CMAKE_USE_SYSTEM_LIBRARIES CACHE)
 181   endif()
 182
 183   # Optionally use system utility libraries.
 184   option(CMAKE_USE_SYSTEM_LIBARCHIVE "Use system-installed libarchive" "${CMAKE_USE_SYSTEM_LIBRARY_LIBARCHIVE}")
 185   option(CMAKE_USE_SYSTEM_CURL "Use system-installed curl" "${CMAKE_USE_SYSTEM_LIBRARY_CURL}")
 186   option(CMAKE_USE_SYSTEM_EXPAT "Use system-installed expat" "${CMAKE_USE_SYSTEM_LIBRARY_EXPAT}")
 187   CMAKE_DEPENDENT_OPTION(CMAKE_USE_SYSTEM_ZLIB "Use system-installed zlib"
 188     "${CMAKE_USE_SYSTEM_LIBRARY_ZLIB}" "NOT CMAKE_USE_SYSTEM_LIBARCHIVE;NOT CMAKE_USE_SYSTEM_CURL" ON)
 189   CMAKE_DEPENDENT_OPTION(CMAKE_USE_SYSTEM_BZIP2 "Use system-installed bzip2"
 190     "${CMAKE_USE_SYSTEM_LIBRARY_BZIP2}" "NOT CMAKE_USE_SYSTEM_LIBARCHIVE" ON)
 191   CMAKE_DEPENDENT_OPTION(CMAKE_USE_SYSTEM_ZSTD "Use system-installed zstd"
 192     "${CMAKE_USE_SYSTEM_LIBRARY_ZSTD}" "NOT CMAKE_USE_SYSTEM_LIBARCHIVE" ON)
 193   CMAKE_DEPENDENT_OPTION(CMAKE_USE_SYSTEM_LIBLZMA "Use system-installed liblzma"
 194     "${CMAKE_USE_SYSTEM_LIBRARY_LIBLZMA}" "NOT CMAKE_USE_SYSTEM_LIBARCHIVE" ON)
 195   option(CMAKE_USE_SYSTEM_FORM "Use system-installed libform" "${CMAKE_USE_SYSTEM_LIBRARY_FORM}")
 196   option(CMAKE_USE_SYSTEM_JSONCPP "Use system-installed jsoncpp" "${CMAKE_USE_SYSTEM_LIBRARY_JSONCPP}")
 197   option(CMAKE_USE_SYSTEM_LIBRHASH "Use system-installed librhash" "${CMAKE_USE_SYSTEM_LIBRARY_LIBRHASH}")
 198   option(CMAKE_USE_SYSTEM_LIBUV "Use system-installed libuv" "${CMAKE_USE_SYSTEM_LIBRARY_LIBUV}")
 199
 200   # For now use system KWIML only if explicitly requested rather
 201   # than activating via the general system libs options.
 202   option(CMAKE_USE_SYSTEM_KWIML "Use system-installed KWIML" OFF)
 203   mark_as_advanced(CMAKE_USE_SYSTEM_KWIML)
 204
 205   # Mention to the user what system libraries are being used.
 206   foreach(util ${UTILITIES} KWIML)
 207     if(CMAKE_USE_SYSTEM_${util})
 208       message(STATUS "Using system-installed ${util}")
 209     endif()
 210   endforeach()
 211
 212   # Inform utility library header wrappers whether to use system versions.
 213   configure_file(${CMake_SOURCE_DIR}/Utilities/cmThirdParty.h.in
 214     ${CMake_BINARY_DIR}/Utilities/cmThirdParty.h
 215     @ONLY)
 216
 217 endmacro()
 218
 219 #-----------------------------------------------------------------------
 220 # a macro to determine the generator and ctest executable to use
 221 # for testing. Simply to improve readability of the main script.
 222 #-----------------------------------------------------------------------
 223 macro(CMAKE_SETUP_TESTING)
 224   if(BUILD_TESTING)
 225     set(CMAKE_TEST_SYSTEM_LIBRARIES 0)
 226     foreach(util CURL EXPAT ZLIB)
 227       if(CMAKE_USE_SYSTEM_${util})
 228         set(CMAKE_TEST_SYSTEM_LIBRARIES 1)
 229       endif()
 230     endforeach()
 231
 232     # This variable is set by cmake, however to
 233     # test cmake we want to make sure that
 234     # the ctest from this cmake is used for testing
 235     # and not the ctest from the cmake building and testing
 236     # cmake.
 237     if(CMake_TEST_EXTERNAL_CMAKE)
 238       set(CMAKE_CTEST_COMMAND "${CMake_TEST_EXTERNAL_CMAKE}/ctest")
 239       set(CMAKE_CMAKE_COMMAND "${CMake_TEST_EXTERNAL_CMAKE}/cmake")
 240       set(CMAKE_CPACK_COMMAND "${CMake_TEST_EXTERNAL_CMAKE}/cpack")
 241       foreach(exe cmake ctest cpack)
 242         add_executable(${exe} IMPORTED)
 243         set_property(TARGET ${exe} PROPERTY IMPORTED_LOCATION ${CMake_TEST_EXTERNAL_CMAKE}/${exe})
 244       endforeach()
 245     else()
 246       set(CMAKE_CTEST_COMMAND "${CMake_BIN_DIR}/ctest")
 247       set(CMAKE_CMAKE_COMMAND "${CMake_BIN_DIR}/cmake")
 248       set(CMAKE_CPACK_COMMAND "${CMake_BIN_DIR}/cpack")
 249     endif()
 250   endif()
 251
 252   # configure some files for testing
 253   configure_file("${CMAKE_CURRENT_SOURCE_DIR}/Templates/CTestScript.cmake.in"
 254     "${CMAKE_CURRENT_BINARY_DIR}/CTestScript.cmake"
 255     @ONLY)
 256   configure_file(${CMake_SOURCE_DIR}/Tests/.NoDartCoverage
 257     ${CMake_BINARY_DIR}/Tests/.NoDartCoverage)
 258   configure_file(${CMake_SOURCE_DIR}/Tests/.NoDartCoverage
 259     ${CMake_BINARY_DIR}/Modules/.NoDartCoverage)
 260   configure_file(${CMake_SOURCE_DIR}/CTestCustom.cmake.in
 261     ${CMake_BINARY_DIR}/CTestCustom.cmake @ONLY)
 262   if(BUILD_TESTING AND DART_ROOT)
 263     configure_file(${CMake_SOURCE_DIR}/CMakeLogo.gif
 264       ${CMake_BINARY_DIR}/Testing/HTML/TestingResults/Icons/Logo.gif COPYONLY)
 265   endif()
 266   mark_as_advanced(DART_ROOT)
 267 endmacro()
 268
 269
 270 # Provide a way for Visual Studio Express users to turn OFF the new FOLDER
 271 # organization feature. Default to ON for non-Express users. Express users must
 272 # explicitly turn off this option to build CMake in the Express IDE...
 273 #
 274 option(CMAKE_USE_FOLDERS "Enable folder grouping of projects in IDEs." ON)
 275 mark_as_advanced(CMAKE_USE_FOLDERS)
 276
 277
 278 option(CMake_RUN_CLANG_TIDY "Run clang-tidy with the compiler." OFF)
 279 if(CMake_RUN_CLANG_TIDY)
 280   if(CMake_SOURCE_DIR STREQUAL CMake_BINARY_DIR)
 281     message(FATAL_ERROR "CMake_RUN_CLANG_TIDY requires an out-of-source build!")
 282   endif()
 283   find_program(CLANG_TIDY_COMMAND NAMES clang-tidy)
 284   if(NOT CLANG_TIDY_COMMAND)
 285     message(FATAL_ERROR "CMake_RUN_CLANG_TIDY is ON but clang-tidy is not found!")
 286   endif()
 287   set(CMAKE_CXX_CLANG_TIDY "${CLANG_TIDY_COMMAND}")
 288
 289   # Create a preprocessor definition that depends on .clang-tidy content so
 290   # the compile command will change when .clang-tidy changes.  This ensures
 291   # that a subsequent build re-runs clang-tidy on all sources even if they
 292   # do not otherwise need to be recompiled.  Nothing actually uses this
 293   # definition.  We add it to targets on which we run clang-tidy just to
 294   # get the build dependency on the .clang-tidy file.
 295   file(SHA1 ${CMAKE_CURRENT_SOURCE_DIR}/.clang-tidy clang_tidy_sha1)
 296   set(CLANG_TIDY_DEFINITIONS "CLANG_TIDY_SHA1=${clang_tidy_sha1}")
 297   unset(clang_tidy_sha1)
 298
 299 endif()
 300 configure_file(.clang-tidy .clang-tidy COPYONLY)
 301
 302
 303 option(CMake_RUN_IWYU "Run include-what-you-use with the compiler." OFF)
 304 if(CMake_RUN_IWYU)
 305   find_program(IWYU_COMMAND NAMES include-what-you-use iwyu)
 306   if(NOT IWYU_COMMAND)
 307     message(FATAL_ERROR "CMake_RUN_IWYU is ON but include-what-you-use is not found!")
 308   endif()
 309   set(CMAKE_CXX_INCLUDE_WHAT_YOU_USE
 310     "${IWYU_COMMAND};-Xiwyu;--mapping_file=${CMake_SOURCE_DIR}/Utilities/IWYU/mapping.imp;-w")
 311   list(APPEND CMAKE_CXX_INCLUDE_WHAT_YOU_USE ${CMake_IWYU_OPTIONS})
 312 endif()
 313
 314
 315 #-----------------------------------------------------------------------
 316 # a macro that only sets the FOLDER target property if it's
 317 # "appropriate"
 318 #-----------------------------------------------------------------------
 319 macro(CMAKE_SET_TARGET_FOLDER tgt folder)
 320   if(CMAKE_USE_FOLDERS)
 321     set_property(GLOBAL PROPERTY USE_FOLDERS ON)
 322     if(MSVC AND TARGET ${tgt})
 323       set_property(TARGET "${tgt}" PROPERTY FOLDER "${folder}")
 324     endif()
 325   else()
 326     set_property(GLOBAL PROPERTY USE_FOLDERS OFF)
 327   endif()
 328 endmacro()
 329
 330
 331 #-----------------------------------------------------------------------
 332 # a macro to build the utilities used by CMake
 333 # Simply to improve readability of the main script.
 334 #-----------------------------------------------------------------------
 335 macro (CMAKE_BUILD_UTILITIES)
 336   find_package(Threads)
 337
 338   #---------------------------------------------------------------------
 339   # Create the kwsys library for CMake.
 340   set(KWSYS_NAMESPACE cmsys)
 341   set(KWSYS_USE_SystemTools 1)
 342   set(KWSYS_USE_Directory 1)
 343   set(KWSYS_USE_RegularExpression 1)
 344   set(KWSYS_USE_Base64 1)
 345   set(KWSYS_USE_MD5 1)
 346   set(KWSYS_USE_Process 1)
 347   set(KWSYS_USE_CommandLineArguments 1)
 348   set(KWSYS_USE_ConsoleBuf 1)
 349   set(KWSYS_HEADER_ROOT ${CMake_BINARY_DIR}/Source)
 350   set(KWSYS_INSTALL_DOC_DIR "${CMAKE_DOC_DIR}")
 351   if(CMake_NO_CXX_STANDARD)
 352     set(KWSYS_CXX_STANDARD "")
 353   endif()
 354   add_subdirectory(Source/kwsys)
 355   set(kwsys_folder "Utilities/KWSys")
 356   CMAKE_SET_TARGET_FOLDER(${KWSYS_NAMESPACE} "${kwsys_folder}")
 357   CMAKE_SET_TARGET_FOLDER(${KWSYS_NAMESPACE}_c "${kwsys_folder}")
 358   if(BUILD_TESTING)
 359     CMAKE_SET_TARGET_FOLDER(${KWSYS_NAMESPACE}TestDynload "${kwsys_folder}")
 360     CMAKE_SET_TARGET_FOLDER(${KWSYS_NAMESPACE}TestProcess "${kwsys_folder}")
 361     CMAKE_SET_TARGET_FOLDER(${KWSYS_NAMESPACE}TestsC "${kwsys_folder}")
 362     CMAKE_SET_TARGET_FOLDER(${KWSYS_NAMESPACE}TestsCxx "${kwsys_folder}")
 363     CMAKE_SET_TARGET_FOLDER(${KWSYS_NAMESPACE}TestSharedForward "${kwsys_folder}")
 364   endif()
 365
 366   #---------------------------------------------------------------------
 367   # Setup third-party libraries.
 368   # Everything in the tree should be able to include files from the
 369   # Utilities directory.
 370   if ((CMAKE_SYSTEM_NAME STREQUAL "AIX" OR CMAKE_SYSTEM_NAME STREQUAL "OS400") AND CMAKE_CXX_COMPILER_ID STREQUAL "GNU")
 371     # using -isystem option generate error "template with C linkage"
 372     include_directories("${CMake_SOURCE_DIR}/Utilities/std")
 373   else()
 374     include_directories(SYSTEM "${CMake_SOURCE_DIR}/Utilities/std")
 375   endif()
 376
 377   include_directories(
 378     ${CMake_BINARY_DIR}/Utilities
 379     ${CMake_SOURCE_DIR}/Utilities
 380     )
 381
 382   #---------------------------------------------------------------------
 383   # Build CMake std library for CMake and CTest.
 384   set(CMAKE_STD_LIBRARY cmstd)
 385   add_subdirectory(Utilities/std)
 386   CMAKE_SET_TARGET_FOLDER(cmstd "Utilities/std")
 387
 388   # check for the use of system libraries versus builtin ones
 389   # (a macro defined in this file)
 390   CMAKE_HANDLE_SYSTEM_LIBRARIES()
 391
 392   if(CMAKE_USE_SYSTEM_KWIML)
 393     find_package(KWIML 1.0)
 394     if(NOT KWIML_FOUND)
 395       message(FATAL_ERROR "CMAKE_USE_SYSTEM_KWIML is ON but KWIML is not found!")
 396     endif()
 397     set(CMake_KWIML_LIBRARIES kwiml::kwiml)
 398   else()
 399     set(CMake_KWIML_LIBRARIES "")
 400     if(BUILD_TESTING)
 401       set(KWIML_TEST_ENABLE 1)
 402     endif()
 403     add_subdirectory(Utilities/KWIML)
 404   endif()
 405
 406   if(CMAKE_USE_SYSTEM_LIBRHASH)
 407     find_package(LibRHash)
 408     if(NOT LibRHash_FOUND)
 409       message(FATAL_ERROR
 410         "CMAKE_USE_SYSTEM_LIBRHASH is ON but LibRHash is not found!")
 411     endif()
 412     set(CMAKE_LIBRHASH_LIBRARIES LibRHash::LibRHash)
 413   else()
 414     set(CMAKE_LIBRHASH_LIBRARIES cmlibrhash)
 415     add_subdirectory(Utilities/cmlibrhash)
 416     CMAKE_SET_TARGET_FOLDER(cmlibrhash "Utilities/3rdParty")
 417   endif()
 418
 419   #---------------------------------------------------------------------
 420   # Build zlib library for Curl, CMake, and CTest.
 421   set(CMAKE_ZLIB_HEADER "cm_zlib.h")
 422   if(CMAKE_USE_SYSTEM_ZLIB)
 423     find_package(ZLIB)
 424     if(NOT ZLIB_FOUND)
 425       message(FATAL_ERROR
 426         "CMAKE_USE_SYSTEM_ZLIB is ON but a zlib is not found!")
 427     endif()
 428     set(CMAKE_ZLIB_INCLUDES ${ZLIB_INCLUDE_DIR})
 429     set(CMAKE_ZLIB_LIBRARIES ${ZLIB_LIBRARIES})
 430   else()
 431     set(CMAKE_ZLIB_INCLUDES ${CMake_SOURCE_DIR}/Utilities)
 432     set(CMAKE_ZLIB_LIBRARIES cmzlib)
 433     add_subdirectory(Utilities/cmzlib)
 434     CMAKE_SET_TARGET_FOLDER(cmzlib "Utilities/3rdParty")
 435   endif()
 436
 437   #---------------------------------------------------------------------
 438   # Build Curl library for CTest.
 439   if(CMAKE_USE_SYSTEM_CURL)
 440     find_package(CURL)
 441     if(NOT CURL_FOUND)
 442       message(FATAL_ERROR
 443         "CMAKE_USE_SYSTEM_CURL is ON but a curl is not found!")
 444     endif()
 445     set(CMAKE_CURL_INCLUDES ${CURL_INCLUDE_DIRS})
 446     set(CMAKE_CURL_LIBRARIES ${CURL_LIBRARIES})
 447   else()
 448     set(CURL_SPECIAL_ZLIB_H ${CMAKE_ZLIB_HEADER})
 449     set(CURL_SPECIAL_LIBZ_INCLUDES ${CMAKE_ZLIB_INCLUDES})
 450     set(CURL_SPECIAL_LIBZ ${CMAKE_ZLIB_LIBRARIES})
 451     set(CMAKE_CURL_INCLUDES)
 452     set(CMAKE_CURL_LIBRARIES cmcurl)
 453     if(CMAKE_TESTS_CDASH_SERVER)
 454       set(CMAKE_CURL_TEST_URL "${CMAKE_TESTS_CDASH_SERVER}/user.php")
 455     endif()
 456     set(_CMAKE_USE_OPENSSL_DEFAULT OFF)
 457     if(NOT DEFINED CMAKE_USE_OPENSSL AND NOT WIN32 AND NOT APPLE
 458         AND CMAKE_SYSTEM_NAME MATCHES "(Linux|FreeBSD)")
 459       set(_CMAKE_USE_OPENSSL_DEFAULT ON)
 460     endif()
 461     option(CMAKE_USE_OPENSSL "Use OpenSSL." ${_CMAKE_USE_OPENSSL_DEFAULT})
 462     mark_as_advanced(CMAKE_USE_OPENSSL)
 463     if(CMAKE_USE_OPENSSL)
 464       set(CURL_CA_BUNDLE "" CACHE FILEPATH "Path to SSL CA Certificate Bundle")
 465       set(CURL_CA_PATH "" CACHE PATH "Path to SSL CA Certificate Directory")
 466       mark_as_advanced(CURL_CA_BUNDLE CURL_CA_PATH)
 467     endif()
 468     add_subdirectory(Utilities/cmcurl)
 469     CMAKE_SET_TARGET_FOLDER(cmcurl "Utilities/3rdParty")
 470     CMAKE_SET_TARGET_FOLDER(LIBCURL "Utilities/3rdParty")
 471   endif()
 472
 473   #---------------------------------------------------------------------
 474   # Build expat library for CMake, CTest, and libarchive.
 475   if(CMAKE_USE_SYSTEM_EXPAT)
 476     find_package(EXPAT)
 477     if(NOT EXPAT_FOUND)
 478       message(FATAL_ERROR
 479         "CMAKE_USE_SYSTEM_EXPAT is ON but a expat is not found!")
 480     endif()
 481     set(CMAKE_EXPAT_INCLUDES ${EXPAT_INCLUDE_DIRS})
 482     set(CMAKE_EXPAT_LIBRARIES ${EXPAT_LIBRARIES})
 483   else()
 484     set(CMAKE_EXPAT_INCLUDES)
 485     set(CMAKE_EXPAT_LIBRARIES cmexpat)
 486     add_subdirectory(Utilities/cmexpat)
 487     CMAKE_SET_TARGET_FOLDER(cmexpat "Utilities/3rdParty")
 488   endif()
 489
 490   #---------------------------------------------------------------------
 491   # Build or use system libbz2 for libarchive.
 492   if(NOT CMAKE_USE_SYSTEM_LIBARCHIVE)
 493     if(CMAKE_USE_SYSTEM_BZIP2)
 494       find_package(BZip2)
 495     else()
 496       set(BZIP2_INCLUDE_DIR
 497         "${CMAKE_CURRENT_SOURCE_DIR}/Utilities/cmbzip2")
 498       set(BZIP2_LIBRARIES cmbzip2)
 499       add_subdirectory(Utilities/cmbzip2)
 500       CMAKE_SET_TARGET_FOLDER(cmbzip2 "Utilities/3rdParty")
 501     endif()
 502   endif()
 503
 504   #---------------------------------------------------------------------
 505   # Build or use system zstd for libarchive.
 506   if(NOT CMAKE_USE_SYSTEM_LIBARCHIVE)
 507     if(NOT CMAKE_USE_SYSTEM_ZSTD)
 508       set(ZSTD_INCLUDE_DIR "${CMAKE_CURRENT_SOURCE_DIR}/Utilities/cmzstd")
 509       set(ZSTD_LIBRARY cmzstd)
 510       add_subdirectory(Utilities/cmzstd)
 511       CMAKE_SET_TARGET_FOLDER(cmzstd "Utilities/3rdParty")
 512     endif()
 513   endif()
 514
 515   #---------------------------------------------------------------------
 516   # Build or use system liblzma for libarchive.
 517   if(NOT CMAKE_USE_SYSTEM_LIBARCHIVE)
 518     if(CMAKE_USE_SYSTEM_LIBLZMA)
 519       find_package(LibLZMA)
 520       if(NOT LIBLZMA_FOUND)
 521         message(FATAL_ERROR "CMAKE_USE_SYSTEM_LIBLZMA is ON but LibLZMA is not found!")
 522       endif()
 523     else()
 524       add_subdirectory(Utilities/cmliblzma)
 525       CMAKE_SET_TARGET_FOLDER(cmliblzma "Utilities/3rdParty")
 526       set(LIBLZMA_HAS_AUTO_DECODER 1)
 527       set(LIBLZMA_HAS_EASY_ENCODER 1)
 528       set(LIBLZMA_HAS_LZMA_PRESET 1)
 529       set(LIBLZMA_INCLUDE_DIR
 530         "${CMAKE_CURRENT_SOURCE_DIR}/Utilities/cmliblzma/liblzma/api")
 531       set(LIBLZMA_LIBRARY cmliblzma)
 532     endif()
 533   endif()
 534
 535   #---------------------------------------------------------------------
 536   # Build or use system libarchive for CMake and CTest.
 537   if(CMAKE_USE_SYSTEM_LIBARCHIVE)
 538     find_package(LibArchive 3.3.3)
 539     if(NOT LibArchive_FOUND)
 540       message(FATAL_ERROR "CMAKE_USE_SYSTEM_LIBARCHIVE is ON but LibArchive is not found!")
 541     endif()
 542     set(CMAKE_TAR_INCLUDES ${LibArchive_INCLUDE_DIRS})
 543     set(CMAKE_TAR_LIBRARIES ${LibArchive_LIBRARIES})
 544   else()
 545     set(EXPAT_INCLUDE_DIR ${CMAKE_EXPAT_INCLUDES})
 546     set(EXPAT_LIBRARY ${CMAKE_EXPAT_LIBRARIES})
 547     set(ZLIB_INCLUDE_DIR ${CMAKE_ZLIB_INCLUDES})
 548     set(ZLIB_LIBRARY ${CMAKE_ZLIB_LIBRARIES})
 549     add_definitions(-DLIBARCHIVE_STATIC)
 550     set(ENABLE_NETTLE OFF CACHE INTERNAL "Enable use of Nettle")
 551     set(ENABLE_OPENSSL ${CMAKE_USE_OPENSSL} CACHE INTERNAL "Enable use of OpenSSL")
 552     set(ENABLE_LZMA ON CACHE INTERNAL "Enable the use of the system LZMA library if found")
 553     set(ENABLE_LZ4 OFF CACHE INTERNAL "Enable the use of the system LZ4 library if found")
 554     set(ENABLE_LZO OFF CACHE INTERNAL "Enable the use of the system LZO library if found")
 555     set(ENABLE_ZLIB ON CACHE INTERNAL "Enable the use of the system ZLIB library if found")
 556     set(ENABLE_BZip2 ON CACHE INTERNAL "Enable the use of the system BZip2 library if found")
 557     set(ENABLE_LIBXML2 OFF CACHE INTERNAL "Enable the use of the system libxml2 library if found")
 558     set(ENABLE_EXPAT ON CACHE INTERNAL "Enable the use of the system EXPAT library if found")
 559     set(ENABLE_PCREPOSIX OFF CACHE INTERNAL "Enable the use of the system PCREPOSIX library if found")
 560     set(ENABLE_LibGCC OFF CACHE INTERNAL "Enable the use of the system LibGCC library if found")
 561     set(ENABLE_XATTR OFF CACHE INTERNAL "Enable extended attribute support")
 562     set(ENABLE_ACL OFF CACHE INTERNAL "Enable ACL support")
 563     set(ENABLE_ICONV OFF CACHE INTERNAL "Enable iconv support")
 564     set(ENABLE_CNG OFF CACHE INTERNAL "Enable the use of CNG(Crypto Next Generation)")
 565     add_subdirectory(Utilities/cmlibarchive)
 566     CMAKE_SET_TARGET_FOLDER(cmlibarchive "Utilities/3rdParty")
 567     set(CMAKE_TAR_LIBRARIES cmlibarchive ${BZIP2_LIBRARIES})
 568   endif()
 569
 570   #---------------------------------------------------------------------
 571   # Build jsoncpp library.
 572   if(CMAKE_USE_SYSTEM_JSONCPP)
 573     find_package(JsonCpp 1.4.1)
 574     if(NOT JsonCpp_FOUND)
 575       message(FATAL_ERROR
 576         "CMAKE_USE_SYSTEM_JSONCPP is ON but a JsonCpp is not found!")
 577     endif()
 578     if(CMAKE_CXX_COMPILER_ID MATCHES "GNU|Clang")
 579       set_property(TARGET JsonCpp::JsonCpp APPEND PROPERTY
 580         INTERFACE_COMPILE_OPTIONS -Wno-deprecated-declarations)
 581     endif()
 582     set(CMAKE_JSONCPP_LIBRARIES JsonCpp::JsonCpp)
 583   else()
 584     set(CMAKE_JSONCPP_LIBRARIES cmjsoncpp)
 585     add_subdirectory(Utilities/cmjsoncpp)
 586     CMAKE_SET_TARGET_FOLDER(cmjsoncpp "Utilities/3rdParty")
 587   endif()
 588
 589   #---------------------------------------------------------------------
 590   # Build libuv library.
 591   if(CMAKE_USE_SYSTEM_LIBUV)
 592     find_package(LibUV 1.10.0)
 593     if(NOT LIBUV_FOUND)
 594       message(FATAL_ERROR
 595         "CMAKE_USE_SYSTEM_LIBUV is ON but a libuv is not found!")
 596     endif()
 597     set(CMAKE_LIBUV_LIBRARIES LibUV::LibUV)
 598   else()
 599     set(CMAKE_LIBUV_LIBRARIES cmlibuv)
 600     add_subdirectory(Utilities/cmlibuv)
 601     CMAKE_SET_TARGET_FOLDER(cmlibuv "Utilities/3rdParty")
 602   endif()
 603
 604   #---------------------------------------------------------------------
 605   # Use curses?
 606   if (UNIX)
 607     if(NOT DEFINED BUILD_CursesDialog)
 608       include(${CMake_SOURCE_DIR}/Source/Checks/Curses.cmake)
 609       option(BUILD_CursesDialog "Build the CMake Curses Dialog ccmake" "${CMakeCheckCurses_COMPILED}")
 610     endif()
 611   else ()
 612     set(BUILD_CursesDialog 0)
 613   endif ()
 614   if(BUILD_CursesDialog)
 615     set(CURSES_NEED_NCURSES TRUE)
 616     find_package(Curses)
 617     if(NOT CURSES_FOUND)
 618       message(WARNING
 619         "'ccmake' will not be built because Curses was not found.\n"
 620         "Turn off BUILD_CursesDialog to suppress this message."
 621         )
 622       set(BUILD_CursesDialog 0)
 623     endif()
 624   endif()
 625   if(BUILD_CursesDialog)
 626     if(NOT CMAKE_USE_SYSTEM_FORM)
 627       add_subdirectory(Source/CursesDialog/form)
 628     elseif(NOT CURSES_FORM_LIBRARY)
 629       message( FATAL_ERROR "CMAKE_USE_SYSTEM_FORM in ON but CURSES_FORM_LIBRARY is not set!" )
 630     endif()
 631   endif()
 632 endmacro ()
 633
 634 #-----------------------------------------------------------------------
 635 if(NOT CMake_TEST_EXTERNAL_CMAKE)
 636   if(CMAKE_CXX_PLATFORM_ID MATCHES "OpenBSD")
 637     execute_process(COMMAND ${CMAKE_CXX_COMPILER}
 638       ${CMAKE_CXX_COMPILER_ARG1} -dumpversion
 639       OUTPUT_VARIABLE _GXX_VERSION
 640     )
 641     string(REGEX REPLACE "([0-9])\\.([0-9])(\\.[0-9])?" "\\1\\2"
 642       _GXX_VERSION_SHORT ${_GXX_VERSION})
 643     if(_GXX_VERSION_SHORT EQUAL 33)
 644       message(FATAL_ERROR
 645         "GXX 3.3 on OpenBSD is known to cause CPack to Crash.\n"
 646         "Please use GXX 4.2 or greater to build CMake on OpenBSD\n"
 647         "${CMAKE_CXX_COMPILER} version is: ${_GXX_VERSION}")
 648     endif()
 649   endif()
 650 endif()
 651
 652 #-----------------------------------------------------------------------
 653 # The main section of the CMakeLists file
 654 #
 655 #-----------------------------------------------------------------------
 656 include(Source/CMakeVersion.cmake)
 657
 658 # Include the standard Dart testing module
 659 enable_testing()
 660 include (${CMAKE_ROOT}/Modules/Dart.cmake)
 661
 662 # Set up test-time configuration.
 663 set_directory_properties(PROPERTIES
 664   TEST_INCLUDE_FILE "${CMake_BINARY_DIR}/Tests/EnforceConfig.cmake")
 665
 666 if(NOT CMake_TEST_EXTERNAL_CMAKE)
 667   # where to write the resulting executables and libraries
 668   set(BUILD_SHARED_LIBS OFF)
 669   set(EXECUTABLE_OUTPUT_PATH "" CACHE INTERNAL "No configurable exe dir.")
 670   set(LIBRARY_OUTPUT_PATH "" CACHE INTERNAL
 671     "Where to put the libraries for CMake")
 672
 673   # Load install destinations.
 674   include(Source/CMakeInstallDestinations.cmake)
 675
 676   if(BUILD_TESTING)
 677     include(${CMake_SOURCE_DIR}/Tests/CMakeInstall.cmake)
 678   endif()
 679
 680   # no clue why we are testing for this here
 681   include(CheckSymbolExists)
 682   CHECK_SYMBOL_EXISTS(unsetenv "stdlib.h" HAVE_UNSETENV)
 683   CHECK_SYMBOL_EXISTS(environ "stdlib.h" HAVE_ENVIRON_NOT_REQUIRE_PROTOTYPE)
 684 endif()
 685
 686 # CMAKE_TESTS_CDASH_SERVER: CDash server used by CMake/Tests.
 687 #
 688 # If not defined or "", this variable defaults to the server at
 689 # "http://open.cdash.org".
 690 #
 691 # If set explicitly to "NOTFOUND", curl tests and ctest tests that use
 692 # the network are skipped.
 693 #
 694 # If set to something starting with "http://localhost/", the CDash is
 695 # expected to be an instance of CDash used for CDash testing, pointing
 696 # to a cdash4simpletest database. In these cases, the CDash dashboards
 697 # should be run first.
 698 #
 699 if("x${CMAKE_TESTS_CDASH_SERVER}" STREQUAL "x" AND NOT CMake_TEST_NO_NETWORK)
 700   set(CMAKE_TESTS_CDASH_SERVER "http://open.cdash.org")
 701 endif()
 702
 703 if(CMake_TEST_EXTERNAL_CMAKE)
 704   set(KWIML_TEST_ENABLE 1)
 705   add_subdirectory(Utilities/KWIML)
 706 endif()
 707
 708 if(NOT CMake_TEST_EXTERNAL_CMAKE)
 709   # build the utilities (a macro defined in this file)
 710   CMAKE_BUILD_UTILITIES()
 711
 712   if(BUILD_QtDialog)
 713     if(APPLE)
 714       set(CMAKE_BUNDLE_VERSION
 715         "${CMake_VERSION_MAJOR}.${CMake_VERSION_MINOR}.${CMake_VERSION_PATCH}")
 716       set(CMAKE_BUNDLE_LOCATION "${CMAKE_INSTALL_PREFIX}")
 717       # make sure CMAKE_INSTALL_PREFIX ends in /
 718       if(NOT CMAKE_INSTALL_PREFIX MATCHES "/$")
 719         set(CMAKE_INSTALL_PREFIX "${CMAKE_INSTALL_PREFIX}/")
 720       endif()
 721       set(CMAKE_INSTALL_PREFIX
 722         "${CMAKE_INSTALL_PREFIX}CMake.app/Contents")
 723     endif()
 724   endif()
 725
 726   if(UNIX)
 727     # Install executables with the RPATH set for libraries outside the build tree.
 728     # This is also suitable for binaries in the build tree.  Avoid re-link on install.
 729     set(CMAKE_INSTALL_RPATH_USE_LINK_PATH ON CACHE BOOL "Install with RPATH set to find custom-built libraries.")
 730     set(CMAKE_BUILD_WITH_INSTALL_RPATH ON CACHE BOOL "Build with RPATH set to match install-tree RPATH.")
 731     mark_as_advanced(CMAKE_INSTALL_RPATH_USE_LINK_PATH CMAKE_BUILD_WITH_INSTALL_RPATH)
 732   endif()
 733
 734   # add the uninstall support
 735   configure_file(
 736     "${CMAKE_CURRENT_SOURCE_DIR}/cmake_uninstall.cmake.in"
 737     "${CMAKE_CURRENT_BINARY_DIR}/cmake_uninstall.cmake"
 738     @ONLY)
 739   add_custom_target(uninstall
 740     "${CMAKE_COMMAND}" -P "${CMAKE_CURRENT_BINARY_DIR}/cmake_uninstall.cmake")
 741
 742   include (CMakeCPack.cmake)
 743
 744 endif()
 745
 746 # setup some Testing support (a macro defined in this file)
 747 CMAKE_SETUP_TESTING()
 748
 749 if(NOT CMake_TEST_EXTERNAL_CMAKE)
 750   if(NOT CMake_VERSION_IS_RELEASE)
 751     if(CMAKE_C_COMPILER_ID STREQUAL "GNU" AND
 752         NOT "${CMAKE_C_COMPILER_VERSION}" VERSION_LESS 4.2)
 753       set(C_FLAGS_LIST -Wcast-align -Werror-implicit-function-declaration -Wchar-subscripts
 754                        -Wall -W -Wpointer-arith -Wwrite-strings -Wformat-security
 755                        -Wmissing-format-attribute -fno-common -Wundef
 756       )
 757       set(CXX_FLAGS_LIST -Wnon-virtual-dtor -Wcast-align -Wchar-subscripts -Wall -W
 758                          -Wshadow -Wpointer-arith -Wformat-security -Wundef
 759       )
 760
 761       foreach(FLAG_LANG  C CXX)
 762         foreach(FLAG ${${FLAG_LANG}_FLAGS_LIST})
 763           if(NOT " ${CMAKE_${FLAG_LANG}_FLAGS} " MATCHES " ${FLAG} ")
 764             set(CMAKE_${FLAG_LANG}_FLAGS "${CMAKE_${FLAG_LANG}_FLAGS} ${FLAG}")
 765           endif()
 766         endforeach()
 767       endforeach()
 768
 769       unset(C_FLAGS_LIST)
 770       unset(CXX_FLAGS_LIST)
 771     endif()
 772   endif()
 773
 774   # build the remaining subdirectories
 775   add_subdirectory(Source)
 776   add_subdirectory(Utilities)
 777 endif()
 778
 779 add_subdirectory(Tests)
 780
 781 if(NOT CMake_TEST_EXTERNAL_CMAKE)
 782   if(BUILD_TESTING)
 783     CMAKE_SET_TARGET_FOLDER(CMakeLibTests "Tests")
 784     IF(TARGET CMakeServerLibTests)
 785       CMAKE_SET_TARGET_FOLDER(CMakeServerLibTests "Tests")
 786     ENDIF()
 787   endif()
 788   if(TARGET documentation)
 789     CMAKE_SET_TARGET_FOLDER(documentation "Documentation")
 790   endif()
 791 endif()
 792
 793 if(BUILD_TESTING)
 794   add_test(SystemInformationNew "${CMAKE_CMAKE_COMMAND}"
 795     --system-information  -G "${CMAKE_GENERATOR}" )
 796 endif()
 797
 798 if(NOT CMake_TEST_EXTERNAL_CMAKE)
 799   # Install license file as it requires.
 800   install(FILES Copyright.txt DESTINATION ${CMAKE_DOC_DIR})
 801
 802   # Install script directories.
 803   install(
 804     DIRECTORY Help Modules Templates
 805     DESTINATION ${CMAKE_DATA_DIR}
 806     FILE_PERMISSIONS OWNER_READ OWNER_WRITE GROUP_READ WORLD_READ
 807     DIRECTORY_PERMISSIONS OWNER_READ OWNER_EXECUTE OWNER_WRITE
 808                           GROUP_READ GROUP_EXECUTE
 809                           WORLD_READ WORLD_EXECUTE
 810     PATTERN "*.sh*" PERMISSIONS OWNER_READ OWNER_EXECUTE OWNER_WRITE
 811                                 GROUP_READ GROUP_EXECUTE
 812                                 WORLD_READ WORLD_EXECUTE
 813     PATTERN "ExportImportList"
 814       PERMISSIONS OWNER_READ OWNER_EXECUTE OWNER_WRITE
 815                   GROUP_READ GROUP_EXECUTE
 816                   WORLD_READ WORLD_EXECUTE
 817     REGEX "Help/(dev|guide)($|/)" EXCLUDE
 818     )
 819
 820   # Install auxiliary files integrating with other tools.
 821   add_subdirectory(Auxiliary)
 822
 823   # Optionally sign installed binaries.
 824   if(CMake_INSTALL_SIGNTOOL)
 825     configure_file(Source/CMakeInstallSignTool.cmake.in Source/CMakeInstallSignTool.cmake @ONLY)
 826     install(SCRIPT ${CMAKE_CURRENT_BINARY_DIR}/Source/CMakeInstallSignTool.cmake)
 827   endif()
 828 endif()