CMakeLists.txt 30.7 KB
Newer Older
1 2 3
# Distributed under the OSI-approved BSD 3-Clause License.  See accompanying
# file Copyright.txt or https://cmake.org/licensing for details.

4
cmake_minimum_required(VERSION 3.1 FATAL_ERROR)
5 6
set(CMAKE_USER_MAKE_RULES_OVERRIDE_C ${CMAKE_CURRENT_SOURCE_DIR}/Source/Modules/OverrideC.cmake)
set(CMAKE_USER_MAKE_RULES_OVERRIDE_CXX ${CMAKE_CURRENT_SOURCE_DIR}/Source/Modules/OverrideCXX.cmake)
7
project(CMake)
8 9
unset(CMAKE_USER_MAKE_RULES_OVERRIDE_CXX)
unset(CMAKE_USER_MAKE_RULES_OVERRIDE_C)
10

11 12 13 14
# Make sure we can find internal find_package modules only used for
# building CMake and not for shipping externally
list(INSERT CMAKE_MODULE_PATH 0 ${CMake_SOURCE_DIR}/Source/Modules)

15
if(CMAKE_BOOTSTRAP)
16
  # Running from bootstrap script.  Set local variable and remove from cache.
17 18 19
  set(CMAKE_BOOTSTRAP 1)
  unset(CMAKE_BOOTSTRAP CACHE)
endif()
20

21
if(NOT CMake_TEST_EXTERNAL_CMAKE)
22 23 24 25 26 27 28 29
  if(CMAKE_SYSTEM_NAME STREQUAL "HP-UX")
    message(FATAL_ERROR
      "CMake no longer compiles on HP-UX.  See\n"
      "  https://gitlab.kitware.com/cmake/cmake/issues/17137\n"
      "Use CMake 3.9 or lower instead."
      )
  endif()

30 31
  set(CMake_BIN_DIR ${CMake_BINARY_DIR}/bin)
endif()
32

33 34 35 36 37 38 39 40 41 42
if(CMake_GUI_DISTRIBUTE_WITH_Qt_LGPL)
  if(CMake_GUI_DISTRIBUTE_WITH_Qt_LGPL MATCHES "^3|2\\.1$")
    set(USE_LGPL "${CMake_GUI_DISTRIBUTE_WITH_Qt_LGPL}")
  else()
    set(USE_LGPL "2.1")
  endif()
else()
  set(USE_LGPL "")
endif()

43
if("${CMake_SOURCE_DIR}" STREQUAL "${CMAKE_SOURCE_DIR}")
44
  # Disallow architecture-specific try_run.  It may not run on the host.
45 46 47 48
  macro(TRY_RUN)
    if(CMAKE_TRY_COMPILE_OSX_ARCHITECTURES)
      message(FATAL_ERROR "TRY_RUN not allowed with CMAKE_TRY_COMPILE_OSX_ARCHITECTURES=[${CMAKE_TRY_COMPILE_OSX_ARCHITECTURES}]")
    else()
49
      _TRY_RUN(${ARGV})
50 51 52
    endif()
  endmacro()
endif()
53

54
# Use most-recent available language dialects with GNU and Clang
55
if(NOT DEFINED CMAKE_C_STANDARD AND NOT CMake_NO_C_STANDARD)
56 57 58 59 60 61
  include(${CMake_SOURCE_DIR}/Source/Checks/cm_c11_thread_local.cmake)
  if(NOT CMake_C11_THREAD_LOCAL_BROKEN)
    set(CMAKE_C_STANDARD 11)
  else()
    set(CMAKE_C_STANDARD 99)
  endif()
62
endif()
63
if(NOT DEFINED CMAKE_CXX_STANDARD AND NOT CMake_NO_CXX_STANDARD)
64 65
  if (CMAKE_CXX_COMPILER_ID STREQUAL SunPro AND CMAKE_CXX_COMPILER_VERSION VERSION_LESS 5.14)
    set(CMAKE_CXX_STANDARD 98)
66
  else()
67 68
    if(NOT CMAKE_VERSION VERSION_LESS 3.8)
      include(${CMake_SOURCE_DIR}/Source/Checks/cm_cxx17_check.cmake)
69
    else()
70 71 72 73 74 75 76 77 78 79 80
      set(CMake_CXX17_BROKEN 1)
    endif()
    if(NOT CMake_CXX17_BROKEN)
      set(CMAKE_CXX_STANDARD 17)
    else()
      include(${CMake_SOURCE_DIR}/Source/Checks/cm_cxx14_check.cmake)
      if(NOT CMake_CXX14_BROKEN)
        set(CMAKE_CXX_STANDARD 14)
      else()
        set(CMAKE_CXX_STANDARD 11)
      endif()
81
    endif()
82
  endif()
83
endif()
84
if(NOT CMake_TEST_EXTERNAL_CMAKE)
85 86 87 88
  # include special compile flags for some compilers
  include(CompileFlags.cmake)

  # check for available C++ features
89
  include(${CMake_SOURCE_DIR}/Source/Checks/cm_cxx_features.cmake)
90 91 92 93

  if(NOT CMake_HAVE_CXX_UNIQUE_PTR)
    message(FATAL_ERROR "The C++ compiler does not support C++11 (e.g. std::unique_ptr).")
  endif()
94
endif()
95

96 97
# set the internal encoding of CMake to UTF-8
set(KWSYS_ENCODING_DEFAULT_CODEPAGE CP_UTF8)
98

99 100 101 102 103 104 105 106 107 108 109
# option to use COMPONENT with install command
option(CMake_INSTALL_COMPONENTS "Using components when installing" OFF)
mark_as_advanced(CMake_INSTALL_COMPONENTS)
macro(CMake_OPTIONAL_COMPONENT NAME)
  if(CMake_INSTALL_COMPONENTS)
    set(COMPONENT COMPONENT ${NAME})
  else()
    set(COMPONENT)
  endif()
endmacro()

110 111
# option to disable installing 3rd-party dependencies
option(CMake_INSTALL_DEPENDENCIES
112
  "Whether to install 3rd-party runtime dependencies" OFF)
113 114
mark_as_advanced(CMake_INSTALL_DEPENDENCIES)

115 116 117 118 119
# option to build reference for CMake developers
option(CMake_BUILD_DEVELOPER_REFERENCE
  "Build CMake Developer Reference" OFF)
mark_as_advanced(CMake_BUILD_DEVELOPER_REFERENCE)

120 121 122 123
#-----------------------------------------------------------------------
# a macro to deal with system libraries, implemented as a macro
# simply to improve readability of the main script
#-----------------------------------------------------------------------
124
macro(CMAKE_HANDLE_SYSTEM_LIBRARIES)
125
  # Options have dependencies.
126
  include(CMakeDependentOption)
127

128
  # Optionally use system xmlrpc.  We no longer build or use it by default.
129 130
  option(CTEST_USE_XMLRPC "Enable xmlrpc submission method in CTest." OFF)
  mark_as_advanced(CTEST_USE_XMLRPC)
131

132 133
  # Allow the user to enable/disable all system utility library options by
  # defining CMAKE_USE_SYSTEM_LIBRARIES or CMAKE_USE_SYSTEM_LIBRARY_${util}.
134
  set(UTILITIES BZIP2 CURL EXPAT FORM JSONCPP LIBARCHIVE LIBLZMA LIBRHASH LIBUV ZLIB)
135 136
  foreach(util ${UTILITIES})
    if(NOT DEFINED CMAKE_USE_SYSTEM_LIBRARY_${util}
137
        AND DEFINED CMAKE_USE_SYSTEM_LIBRARIES)
138 139 140 141 142 143 144 145 146 147 148 149 150
      set(CMAKE_USE_SYSTEM_LIBRARY_${util} "${CMAKE_USE_SYSTEM_LIBRARIES}")
    endif()
    if(DEFINED CMAKE_USE_SYSTEM_LIBRARY_${util})
      if(CMAKE_USE_SYSTEM_LIBRARY_${util})
        set(CMAKE_USE_SYSTEM_LIBRARY_${util} ON)
      else()
        set(CMAKE_USE_SYSTEM_LIBRARY_${util} OFF)
      endif()
      if(CMAKE_BOOTSTRAP)
        unset(CMAKE_USE_SYSTEM_LIBRARY_${util} CACHE)
      endif()
      string(TOLOWER "${util}" lutil)
      set(CMAKE_USE_SYSTEM_${util} "${CMAKE_USE_SYSTEM_LIBRARY_${util}}"
151
        CACHE BOOL "Use system-installed ${lutil}" FORCE)
152 153 154
    else()
      set(CMAKE_USE_SYSTEM_LIBRARY_${util} OFF)
    endif()
155
  endforeach()
156 157 158
  if(CMAKE_BOOTSTRAP)
    unset(CMAKE_USE_SYSTEM_LIBRARIES CACHE)
  endif()
159 160

  # Optionally use system utility libraries.
161
  option(CMAKE_USE_SYSTEM_LIBARCHIVE "Use system-installed libarchive" "${CMAKE_USE_SYSTEM_LIBRARY_LIBARCHIVE}")
162
  CMAKE_DEPENDENT_OPTION(CMAKE_USE_SYSTEM_CURL "Use system-installed curl"
163
    "${CMAKE_USE_SYSTEM_LIBRARY_CURL}" "NOT CTEST_USE_XMLRPC" ON)
164
  CMAKE_DEPENDENT_OPTION(CMAKE_USE_SYSTEM_EXPAT "Use system-installed expat"
165
    "${CMAKE_USE_SYSTEM_LIBRARY_EXPAT}" "NOT CTEST_USE_XMLRPC" ON)
166
  CMAKE_DEPENDENT_OPTION(CMAKE_USE_SYSTEM_ZLIB "Use system-installed zlib"
167
    "${CMAKE_USE_SYSTEM_LIBRARY_ZLIB}" "NOT CMAKE_USE_SYSTEM_LIBARCHIVE;NOT CMAKE_USE_SYSTEM_CURL" ON)
168
  CMAKE_DEPENDENT_OPTION(CMAKE_USE_SYSTEM_BZIP2 "Use system-installed bzip2"
169
    "${CMAKE_USE_SYSTEM_LIBRARY_BZIP2}" "NOT CMAKE_USE_SYSTEM_LIBARCHIVE" ON)
170 171
  CMAKE_DEPENDENT_OPTION(CMAKE_USE_SYSTEM_LIBLZMA "Use system-installed liblzma"
    "${CMAKE_USE_SYSTEM_LIBRARY_LIBLZMA}" "NOT CMAKE_USE_SYSTEM_LIBARCHIVE" ON)
172
  option(CMAKE_USE_SYSTEM_FORM "Use system-installed libform" "${CMAKE_USE_SYSTEM_LIBRARY_FORM}")
173
  option(CMAKE_USE_SYSTEM_JSONCPP "Use system-installed jsoncpp" "${CMAKE_USE_SYSTEM_LIBRARY_JSONCPP}")
174
  option(CMAKE_USE_SYSTEM_LIBRHASH "Use system-installed librhash" "${CMAKE_USE_SYSTEM_LIBRARY_LIBRHASH}")
175
  option(CMAKE_USE_SYSTEM_LIBUV "Use system-installed libuv" "${CMAKE_USE_SYSTEM_LIBRARY_LIBUV}")
176

177 178 179 180 181
  # For now use system KWIML only if explicitly requested rather
  # than activating via the general system libs options.
  option(CMAKE_USE_SYSTEM_KWIML "Use system-installed KWIML" OFF)
  mark_as_advanced(CMAKE_USE_SYSTEM_KWIML)

182
  # Mention to the user what system libraries are being used.
183
  foreach(util ${UTILITIES} KWIML)
184 185
    if(CMAKE_USE_SYSTEM_${util})
      message(STATUS "Using system-installed ${util}")
186 187
    endif()
  endforeach()
188 189

  # Inform utility library header wrappers whether to use system versions.
190
  configure_file(${CMake_SOURCE_DIR}/Utilities/cmThirdParty.h.in
191 192 193
    ${CMake_BINARY_DIR}/Utilities/cmThirdParty.h
    @ONLY)

194
endmacro()
195 196 197 198 199

#-----------------------------------------------------------------------
# a macro to determine the generator and ctest executable to use
# for testing. Simply to improve readability of the main script.
#-----------------------------------------------------------------------
200 201 202 203 204 205
macro(CMAKE_SETUP_TESTING)
  if(BUILD_TESTING)
    set(CMAKE_TEST_SYSTEM_LIBRARIES 0)
    foreach(util CURL EXPAT XMLRPC ZLIB)
      if(CMAKE_USE_SYSTEM_${util})
        set(CMAKE_TEST_SYSTEM_LIBRARIES 1)
206 207
      endif()
    endforeach()
208

209 210 211 212 213
    # This variable is set by cmake, however to
    # test cmake we want to make sure that
    # the ctest from this cmake is used for testing
    # and not the ctest from the cmake building and testing
    # cmake.
214 215 216 217 218 219 220 221 222 223 224 225 226
    if(CMake_TEST_EXTERNAL_CMAKE)
      set(CMAKE_CTEST_COMMAND "${CMake_TEST_EXTERNAL_CMAKE}/ctest")
      set(CMAKE_CMAKE_COMMAND "${CMake_TEST_EXTERNAL_CMAKE}/cmake")
      set(CMAKE_CPACK_COMMAND "${CMake_TEST_EXTERNAL_CMAKE}/cpack")
      foreach(exe cmake ctest cpack)
        add_executable(${exe} IMPORTED)
        set_property(TARGET ${exe} PROPERTY IMPORTED_LOCATION ${CMake_TEST_EXTERNAL_CMAKE}/${exe})
      endforeach()
    else()
      set(CMAKE_CTEST_COMMAND "${CMake_BIN_DIR}/ctest")
      set(CMAKE_CMAKE_COMMAND "${CMake_BIN_DIR}/cmake")
      set(CMAKE_CPACK_COMMAND "${CMake_BIN_DIR}/cpack")
    endif()
227
  endif()
228 229

  # configure some files for testing
230
  configure_file("${CMAKE_CURRENT_SOURCE_DIR}/Templates/CTestScript.cmake.in"
231
    "${CMAKE_CURRENT_BINARY_DIR}/CTestScript.cmake"
232
    @ONLY)
233
  configure_file(${CMake_SOURCE_DIR}/Tests/.NoDartCoverage
234
    ${CMake_BINARY_DIR}/Tests/.NoDartCoverage)
235
  configure_file(${CMake_SOURCE_DIR}/Tests/.NoDartCoverage
236
    ${CMake_BINARY_DIR}/Modules/.NoDartCoverage)
237
  configure_file(${CMake_SOURCE_DIR}/CTestCustom.cmake.in
238
    ${CMake_BINARY_DIR}/CTestCustom.cmake @ONLY)
239 240
  if(BUILD_TESTING AND DART_ROOT)
    configure_file(${CMake_SOURCE_DIR}/CMakeLogo.gif
Ken Martin's avatar
Ken Martin committed
241
      ${CMake_BINARY_DIR}/Testing/HTML/TestingResults/Icons/Logo.gif COPYONLY)
242
  endif()
243 244
  mark_as_advanced(DART_ROOT)
  mark_as_advanced(CURL_TESTING)
245
endmacro()
246 247


248 249 250 251
# Provide a way for Visual Studio Express users to turn OFF the new FOLDER
# organization feature. Default to ON for non-Express users. Express users must
# explicitly turn off this option to build CMake in the Express IDE...
#
252 253
option(CMAKE_USE_FOLDERS "Enable folder grouping of projects in IDEs." ON)
mark_as_advanced(CMAKE_USE_FOLDERS)
254 255


256 257 258 259 260 261 262 263 264 265
option(CMake_RUN_CLANG_TIDY "Run clang-tidy with the compiler." OFF)
if(CMake_RUN_CLANG_TIDY)
  if(CMake_SOURCE_DIR STREQUAL CMake_BINARY_DIR)
    message(FATAL_ERROR "CMake_RUN_CLANG_TIDY requires an out-of-source build!")
  endif()
  find_program(CLANG_TIDY_COMMAND NAMES clang-tidy)
  if(NOT CLANG_TIDY_COMMAND)
    message(FATAL_ERROR "CMake_RUN_CLANG_TIDY is ON but clang-tidy is not found!")
  endif()
  set(CMAKE_CXX_CLANG_TIDY "${CLANG_TIDY_COMMAND}")
266

267 268 269 270 271 272
  # Create a preprocessor definition that depends on .clang-tidy content so
  # the compile command will change when .clang-tidy changes.  This ensures
  # that a subsequent build re-runs clang-tidy on all sources even if they
  # do not otherwise need to be recompiled.  Nothing actually uses this
  # definition.  We add it to targets on which we run clang-tidy just to
  # get the build dependency on the .clang-tidy file.
273 274 275 276
  file(SHA1 ${CMAKE_CURRENT_SOURCE_DIR}/.clang-tidy clang_tidy_sha1)
  set(CLANG_TIDY_DEFINITIONS "CLANG_TIDY_SHA1=${clang_tidy_sha1}")
  unset(clang_tidy_sha1)

277 278 279 280
endif()
configure_file(.clang-tidy .clang-tidy COPYONLY)


281 282 283 284 285 286 287
option(CMake_RUN_IWYU "Run include-what-you-use with the compiler." OFF)
if(CMake_RUN_IWYU)
  find_program(IWYU_COMMAND NAMES include-what-you-use iwyu)
  if(NOT IWYU_COMMAND)
    message(FATAL_ERROR "CMake_RUN_IWYU is ON but include-what-you-use is not found!")
  endif()
  set(CMAKE_CXX_INCLUDE_WHAT_YOU_USE
288 289
    "${IWYU_COMMAND};-Xiwyu;--mapping_file=${CMake_SOURCE_DIR}/Utilities/IWYU/mapping.imp;-w")
  list(APPEND CMAKE_CXX_INCLUDE_WHAT_YOU_USE ${CMake_IWYU_OPTIONS})
290 291 292
endif()


293 294 295 296
#-----------------------------------------------------------------------
# a macro that only sets the FOLDER target property if it's
# "appropriate"
#-----------------------------------------------------------------------
297 298 299
macro(CMAKE_SET_TARGET_FOLDER tgt folder)
  if(CMAKE_USE_FOLDERS)
    set_property(GLOBAL PROPERTY USE_FOLDERS ON)
300 301
    if(MSVC AND TARGET ${tgt})
      set_property(TARGET "${tgt}" PROPERTY FOLDER "${folder}")
302 303 304 305
    endif()
  else()
    set_property(GLOBAL PROPERTY USE_FOLDERS OFF)
  endif()
306
endmacro()
307

308 309 310 311 312

#-----------------------------------------------------------------------
# a macro to build the utilities used by CMake
# Simply to improve readability of the main script.
#-----------------------------------------------------------------------
313
macro (CMAKE_BUILD_UTILITIES)
314 315
  find_package(Threads)

316 317
  #---------------------------------------------------------------------
  # Create the kwsys library for CMake.
318 319 320 321 322 323 324 325
  set(KWSYS_NAMESPACE cmsys)
  set(KWSYS_USE_SystemTools 1)
  set(KWSYS_USE_Directory 1)
  set(KWSYS_USE_RegularExpression 1)
  set(KWSYS_USE_Base64 1)
  set(KWSYS_USE_MD5 1)
  set(KWSYS_USE_Process 1)
  set(KWSYS_USE_CommandLineArguments 1)
326
  set(KWSYS_USE_ConsoleBuf 1)
327
  set(KWSYS_HEADER_ROOT ${CMake_BINARY_DIR}/Source)
328
  set(KWSYS_INSTALL_DOC_DIR "${CMAKE_DOC_DIR}")
329 330
  add_subdirectory(Source/kwsys)
  set(kwsys_folder "Utilities/KWSys")
331 332
  CMAKE_SET_TARGET_FOLDER(${KWSYS_NAMESPACE} "${kwsys_folder}")
  CMAKE_SET_TARGET_FOLDER(${KWSYS_NAMESPACE}_c "${kwsys_folder}")
333 334 335 336 337 338 339
  if(BUILD_TESTING)
    CMAKE_SET_TARGET_FOLDER(${KWSYS_NAMESPACE}TestDynload "${kwsys_folder}")
    CMAKE_SET_TARGET_FOLDER(${KWSYS_NAMESPACE}TestProcess "${kwsys_folder}")
    CMAKE_SET_TARGET_FOLDER(${KWSYS_NAMESPACE}TestsC "${kwsys_folder}")
    CMAKE_SET_TARGET_FOLDER(${KWSYS_NAMESPACE}TestsCxx "${kwsys_folder}")
    CMAKE_SET_TARGET_FOLDER(${KWSYS_NAMESPACE}TestSharedForward "${kwsys_folder}")
  endif()
340

341 342 343 344
  #---------------------------------------------------------------------
  # Setup third-party libraries.
  # Everything in the tree should be able to include files from the
  # Utilities directory.
345
  include_directories(
346
    ${CMake_BINARY_DIR}/Utilities
347
    ${CMake_SOURCE_DIR}/Utilities
348
    )
349

350
  # check for the use of system libraries versus builtin ones
Ken Martin's avatar
Ken Martin committed
351
  # (a macro defined in this file)
352
  CMAKE_HANDLE_SYSTEM_LIBRARIES()
353

354 355 356 357 358 359 360 361 362 363 364 365 366 367
  if(CMAKE_USE_SYSTEM_KWIML)
    find_package(KWIML 1.0)
    if(NOT KWIML_FOUND)
      message(FATAL_ERROR "CMAKE_USE_SYSTEM_KWIML is ON but KWIML is not found!")
    endif()
    set(CMake_KWIML_LIBRARIES kwiml::kwiml)
  else()
    set(CMake_KWIML_LIBRARIES "")
    if(BUILD_TESTING)
      set(KWIML_TEST_ENABLE 1)
    endif()
    add_subdirectory(Utilities/KWIML)
  endif()

368
  if(CMAKE_USE_SYSTEM_LIBRHASH)
369
    find_package(LibRHash)
370 371 372 373 374 375 376 377 378 379
    if(NOT LibRHash_FOUND)
      message(FATAL_ERROR
        "CMAKE_USE_SYSTEM_LIBRHASH is ON but LibRHash is not found!")
    endif()
    set(CMAKE_LIBRHASH_LIBRARIES LibRHash::LibRHash)
  else()
    set(CMAKE_LIBRHASH_LIBRARIES cmlibrhash)
    add_subdirectory(Utilities/cmlibrhash)
    CMAKE_SET_TARGET_FOLDER(cmlibrhash "Utilities/3rdParty")
  endif()
380

381 382
  #---------------------------------------------------------------------
  # Build zlib library for Curl, CMake, and CTest.
383 384 385 386 387
  set(CMAKE_ZLIB_HEADER "cm_zlib.h")
  if(CMAKE_USE_SYSTEM_ZLIB)
    find_package(ZLIB)
    if(NOT ZLIB_FOUND)
      message(FATAL_ERROR
388
        "CMAKE_USE_SYSTEM_ZLIB is ON but a zlib is not found!")
389
    endif()
390 391
    set(CMAKE_ZLIB_INCLUDES ${ZLIB_INCLUDE_DIR})
    set(CMAKE_ZLIB_LIBRARIES ${ZLIB_LIBRARIES})
392
  else()
393 394 395
    set(CMAKE_ZLIB_INCLUDES ${CMake_SOURCE_DIR}/Utilities)
    set(CMAKE_ZLIB_LIBRARIES cmzlib)
    add_subdirectory(Utilities/cmzlib)
396
    CMAKE_SET_TARGET_FOLDER(cmzlib "Utilities/3rdParty")
397
  endif()
398

399 400
  #---------------------------------------------------------------------
  # Build Curl library for CTest.
401 402 403 404
  if(CMAKE_USE_SYSTEM_CURL)
    find_package(CURL)
    if(NOT CURL_FOUND)
      message(FATAL_ERROR
405
        "CMAKE_USE_SYSTEM_CURL is ON but a curl is not found!")
406
    endif()
407 408
    set(CMAKE_CURL_INCLUDES ${CURL_INCLUDE_DIRS})
    set(CMAKE_CURL_LIBRARIES ${CURL_LIBRARIES})
409
  else()
410 411 412
    set(CURL_SPECIAL_ZLIB_H ${CMAKE_ZLIB_HEADER})
    set(CURL_SPECIAL_LIBZ_INCLUDES ${CMAKE_ZLIB_INCLUDES})
    set(CURL_SPECIAL_LIBZ ${CMAKE_ZLIB_LIBRARIES})
413
    add_definitions(-DCURL_STATICLIB)
414 415 416 417
    set(CMAKE_CURL_INCLUDES)
    set(CMAKE_CURL_LIBRARIES cmcurl)
    if(CMAKE_TESTS_CDASH_SERVER)
      set(CMAKE_CURL_TEST_URL "${CMAKE_TESTS_CDASH_SERVER}/user.php")
418
    endif()
419 420 421 422 423 424 425 426 427
    set(_CMAKE_USE_OPENSSL_DEFAULT OFF)
    if(NOT DEFINED CMAKE_USE_OPENSSL AND NOT WIN32 AND NOT APPLE
        AND CMAKE_SYSTEM_NAME MATCHES "(Linux|FreeBSD)")
      find_package(OpenSSL QUIET)
      if(OPENSSL_FOUND)
        set(_CMAKE_USE_OPENSSL_DEFAULT ON)
      endif()
    endif()
    option(CMAKE_USE_OPENSSL "Use OpenSSL." ${_CMAKE_USE_OPENSSL_DEFAULT})
428 429 430 431 432 433
    mark_as_advanced(CMAKE_USE_OPENSSL)
    if(CMAKE_USE_OPENSSL)
      set(CURL_CA_BUNDLE "" CACHE FILEPATH "Path to SSL CA Certificate Bundle")
      set(CURL_CA_PATH "" CACHE PATH "Path to SSL CA Certificate Directory")
      mark_as_advanced(CURL_CA_BUNDLE CURL_CA_PATH)
    endif()
434
    add_subdirectory(Utilities/cmcurl)
435 436
    CMAKE_SET_TARGET_FOLDER(cmcurl "Utilities/3rdParty")
    CMAKE_SET_TARGET_FOLDER(LIBCURL "Utilities/3rdParty")
437
  endif()
438 439 440

  #---------------------------------------------------------------------
  # Build Compress library for CTest.
441
  set(CMAKE_COMPRESS_INCLUDES
442
    "${CMAKE_CURRENT_BINARY_DIR}/Utilities/cmcompress")
443 444
  set(CMAKE_COMPRESS_LIBRARIES "cmcompress")
  add_subdirectory(Utilities/cmcompress)
445
  CMAKE_SET_TARGET_FOLDER(cmcompress "Utilities/3rdParty")
446

447 448 449 450 451 452 453 454 455 456 457 458 459 460 461 462 463
  #---------------------------------------------------------------------
  # Build expat library for CMake, CTest, and libarchive.
  if(CMAKE_USE_SYSTEM_EXPAT)
    find_package(EXPAT)
    if(NOT EXPAT_FOUND)
      message(FATAL_ERROR
        "CMAKE_USE_SYSTEM_EXPAT is ON but a expat is not found!")
    endif()
    set(CMAKE_EXPAT_INCLUDES ${EXPAT_INCLUDE_DIRS})
    set(CMAKE_EXPAT_LIBRARIES ${EXPAT_LIBRARIES})
  else()
    set(CMAKE_EXPAT_INCLUDES)
    set(CMAKE_EXPAT_LIBRARIES cmexpat)
    add_subdirectory(Utilities/cmexpat)
    CMAKE_SET_TARGET_FOLDER(cmexpat "Utilities/3rdParty")
  endif()

464 465 466 467 468 469 470 471 472 473 474 475
  #---------------------------------------------------------------------
  # Build or use system libbz2 for libarchive.
  if(NOT CMAKE_USE_SYSTEM_LIBARCHIVE)
    if(CMAKE_USE_SYSTEM_BZIP2)
      find_package(BZip2)
    else()
      set(BZIP2_INCLUDE_DIR
        "${CMAKE_CURRENT_SOURCE_DIR}/Utilities/cmbzip2")
      set(BZIP2_LIBRARIES cmbzip2)
      add_subdirectory(Utilities/cmbzip2)
      CMAKE_SET_TARGET_FOLDER(cmbzip2 "Utilities/3rdParty")
    endif()
476
  endif()
477

478 479
  #---------------------------------------------------------------------
  # Build or use system liblzma for libarchive.
480 481 482 483 484 485 486 487 488
  if(NOT CMAKE_USE_SYSTEM_LIBARCHIVE)
    if(CMAKE_USE_SYSTEM_LIBLZMA)
      find_package(LibLZMA)
      if(NOT LIBLZMA_FOUND)
        message(FATAL_ERROR "CMAKE_USE_SYSTEM_LIBLZMA is ON but LibLZMA is not found!")
      endif()
    else()
      add_subdirectory(Utilities/cmliblzma)
      CMAKE_SET_TARGET_FOLDER(cmliblzma "Utilities/3rdParty")
489 490 491 492
      set(LIBLZMA_HAS_AUTO_DECODER 1)
      set(LIBLZMA_HAS_EASY_ENCODER 1)
      set(LIBLZMA_HAS_LZMA_PRESET 1)
      set(LIBLZMA_INCLUDE_DIR
493
        "${CMAKE_CURRENT_SOURCE_DIR}/Utilities/cmliblzma/liblzma/api")
494
      set(LIBLZMA_LIBRARY cmliblzma)
495 496 497
    endif()
  endif()

498 499
  #---------------------------------------------------------------------
  # Build or use system libarchive for CMake and CTest.
500
  if(CMAKE_USE_SYSTEM_LIBARCHIVE)
501
    find_package(LibArchive 3.1.0)
502 503 504 505 506
    if(NOT LibArchive_FOUND)
      message(FATAL_ERROR "CMAKE_USE_SYSTEM_LIBARCHIVE is ON but LibArchive is not found!")
    endif()
    set(CMAKE_TAR_INCLUDES ${LibArchive_INCLUDE_DIRS})
    set(CMAKE_TAR_LIBRARIES ${LibArchive_LIBRARIES})
507
  else()
508 509
    set(EXPAT_INCLUDE_DIR ${CMAKE_EXPAT_INCLUDES})
    set(EXPAT_LIBRARY ${CMAKE_EXPAT_LIBRARIES})
510 511 512 513 514
    set(ZLIB_INCLUDE_DIR ${CMAKE_ZLIB_INCLUDES})
    set(ZLIB_LIBRARY ${CMAKE_ZLIB_LIBRARIES})
    add_definitions(-DLIBARCHIVE_STATIC)
    set(ENABLE_NETTLE OFF CACHE INTERNAL "Enable use of Nettle")
    set(ENABLE_OPENSSL ${CMAKE_USE_OPENSSL} CACHE INTERNAL "Enable use of OpenSSL")
515 516 517 518 519 520 521 522
    set(ENABLE_LZMA ON CACHE INTERNAL "Enable the use of the system LZMA library if found")
    set(ENABLE_LZO OFF CACHE INTERNAL "Enable the use of the system LZO library if found")
    set(ENABLE_ZLIB ON CACHE INTERNAL "Enable the use of the system ZLIB library if found")
    set(ENABLE_BZip2 ON CACHE INTERNAL "Enable the use of the system BZip2 library if found")
    set(ENABLE_LIBXML2 OFF CACHE INTERNAL "Enable the use of the system libxml2 library if found")
    set(ENABLE_EXPAT ON CACHE INTERNAL "Enable the use of the system EXPAT library if found")
    set(ENABLE_PCREPOSIX OFF CACHE INTERNAL "Enable the use of the system PCREPOSIX library if found")
    set(ENABLE_LibGCC OFF CACHE INTERNAL "Enable the use of the system LibGCC library if found")
523 524 525
    set(ENABLE_XATTR OFF CACHE INTERNAL "Enable extended attribute support")
    set(ENABLE_ACL OFF CACHE INTERNAL "Enable ACL support")
    set(ENABLE_ICONV OFF CACHE INTERNAL "Enable iconv support")
526
    set(ENABLE_CNG OFF CACHE INTERNAL "Enable the use of CNG(Crypto Next Generation)")
527
    add_subdirectory(Utilities/cmlibarchive)
528
    CMAKE_SET_TARGET_FOLDER(cmlibarchive "Utilities/3rdParty")
529
    set(CMAKE_TAR_LIBRARIES cmlibarchive ${BZIP2_LIBRARIES})
530
  endif()
531

532 533
  #---------------------------------------------------------------------
  # Build jsoncpp library.
534
  if(CMAKE_USE_SYSTEM_JSONCPP)
535
    find_package(JsonCpp)
536 537 538 539 540 541 542 543 544 545
    if(NOT JsonCpp_FOUND)
      message(FATAL_ERROR
        "CMAKE_USE_SYSTEM_JSONCPP is ON but a JsonCpp is not found!")
    endif()
    set(CMAKE_JSONCPP_LIBRARIES JsonCpp::JsonCpp)
  else()
    set(CMAKE_JSONCPP_LIBRARIES cmjsoncpp)
    add_subdirectory(Utilities/cmjsoncpp)
    CMAKE_SET_TARGET_FOLDER(cmjsoncpp "Utilities/3rdParty")
  endif()
546

547 548
  #---------------------------------------------------------------------
  # Build libuv library.
549
  if(CMAKE_USE_SYSTEM_LIBUV)
550
    find_package(LibUV 1.10.0)
551 552 553 554 555
    if(NOT LIBUV_FOUND)
      message(FATAL_ERROR
        "CMAKE_USE_SYSTEM_LIBUV is ON but a libuv is not found!")
    endif()
    set(CMAKE_LIBUV_LIBRARIES LibUV::LibUV)
556
  else()
557 558 559
    set(CMAKE_LIBUV_LIBRARIES cmlibuv)
    add_subdirectory(Utilities/cmlibuv)
    CMAKE_SET_TARGET_FOLDER(cmlibuv "Utilities/3rdParty")
560 561
  endif()

562 563
  #---------------------------------------------------------------------
  # Build XMLRPC library for CMake and CTest.
564 565 566 567
  if(CTEST_USE_XMLRPC)
    find_package(XMLRPC QUIET REQUIRED libwww-client)
    if(NOT XMLRPC_FOUND)
      message(FATAL_ERROR
568
        "CTEST_USE_XMLRPC is ON but xmlrpc is not found!")
569
    endif()
570 571
    set(CMAKE_XMLRPC_INCLUDES ${XMLRPC_INCLUDE_DIRS})
    set(CMAKE_XMLRPC_LIBRARIES ${XMLRPC_LIBRARIES})
572
  endif()
573

574 575
  #---------------------------------------------------------------------
  # Use curses?
576
  if (UNIX)
577 578 579
    if(NOT DEFINED BUILD_CursesDialog)
      include(${CMake_SOURCE_DIR}/Source/Checks/Curses.cmake)
      option(BUILD_CursesDialog "Build the CMake Curses Dialog ccmake" "${CMakeCheckCurses_COMPILED}")
580 581
    endif()
  else ()
582
    set(BUILD_CursesDialog 0)
583
  endif ()
584 585 586 587 588 589 590 591 592 593 594
  if(BUILD_CursesDialog)
    set(CURSES_NEED_NCURSES TRUE)
    find_package(Curses)
    if(NOT CURSES_FOUND)
      message(WARNING
        "'ccmake' will not be built because Curses was not found.\n"
        "Turn off BUILD_CursesDialog to suppress this message."
        )
      set(BUILD_CursesDialog 0)
    endif()
  endif()
595
  if(BUILD_CursesDialog)
596 597 598 599 600
    if(NOT CMAKE_USE_SYSTEM_FORM)
      add_subdirectory(Source/CursesDialog/form)
    elseif(NOT CURSES_FORM_LIBRARY)
      message( FATAL_ERROR "CMAKE_USE_SYSTEM_FORM in ON but CURSES_FORM_LIBRARY is not set!" )
    endif()
601 602
  endif()
endmacro ()
603

604
#-----------------------------------------------------------------------
605 606 607 608 609 610 611 612 613 614 615 616 617 618
if(NOT CMake_TEST_EXTERNAL_CMAKE)
  if(CMAKE_CXX_PLATFORM_ID MATCHES "OpenBSD")
    execute_process(COMMAND ${CMAKE_CXX_COMPILER}
      ${CMAKE_CXX_COMPILER_ARG1} -dumpversion
      OUTPUT_VARIABLE _GXX_VERSION
    )
    string(REGEX REPLACE "([0-9])\\.([0-9])(\\.[0-9])?" "\\1\\2"
      _GXX_VERSION_SHORT ${_GXX_VERSION})
    if(_GXX_VERSION_SHORT EQUAL 33)
      message(FATAL_ERROR
        "GXX 3.3 on OpenBSD is known to cause CPack to Crash.\n"
        "Please use GXX 4.2 or greater to build CMake on OpenBSD\n"
        "${CMAKE_CXX_COMPILER} version is: ${_GXX_VERSION}")
    endif()
619 620
  endif()
endif()
621 622 623 624 625

#-----------------------------------------------------------------------
# The main section of the CMakeLists file
#
#-----------------------------------------------------------------------
626 627
# Compute CMake_VERSION, etc.
include(Source/CMakeVersionCompute.cmake)
628

629
# Include the standard Dart testing module
630 631
enable_testing()
include (${CMAKE_ROOT}/Modules/Dart.cmake)
632

633
# Set up test-time configuration.
634
set_directory_properties(PROPERTIES
635 636
  TEST_INCLUDE_FILE "${CMake_BINARY_DIR}/Tests/EnforceConfig.cmake")

637 638 639 640 641 642
if(NOT CMake_TEST_EXTERNAL_CMAKE)
  # where to write the resulting executables and libraries
  set(BUILD_SHARED_LIBS OFF)
  set(EXECUTABLE_OUTPUT_PATH "" CACHE INTERNAL "No configurable exe dir.")
  set(LIBRARY_OUTPUT_PATH "" CACHE INTERNAL
    "Where to put the libraries for CMake")
643

644 645 646
  # The CMake executables usually do not need any rpath to run in the build or
  # install tree.
  set(CMAKE_SKIP_RPATH ON CACHE INTERNAL "CMake does not need RPATHs.")
647

648 649
  # Load install destinations.
  include(Source/CMakeInstallDestinations.cmake)
650

651 652 653
  if(BUILD_TESTING)
    include(${CMake_SOURCE_DIR}/Tests/CMakeInstall.cmake)
  endif()
654

655 656 657 658 659
  # no clue why we are testing for this here
  include(CheckSymbolExists)
  CHECK_SYMBOL_EXISTS(unsetenv "stdlib.h" HAVE_UNSETENV)
  CHECK_SYMBOL_EXISTS(environ "stdlib.h" HAVE_ENVIRON_NOT_REQUIRE_PROTOTYPE)
endif()
Andy Cedilnik's avatar
Andy Cedilnik committed
660

661 662 663
# CMAKE_TESTS_CDASH_SERVER: CDash server used by CMake/Tests.
#
# If not defined or "", this variable defaults to the server at
Brad King's avatar
Brad King committed
664
# "http://open.cdash.org".
665 666 667 668 669 670 671 672 673
#
# If set explicitly to "NOTFOUND", curl tests and ctest tests that use
# the network are skipped.
#
# If set to something starting with "http://localhost/", the CDash is
# expected to be an instance of CDash used for CDash testing, pointing
# to a cdash4simpletest database. In these cases, the CDash dashboards
# should be run first.
#
674
if("x${CMAKE_TESTS_CDASH_SERVER}" STREQUAL "x")
Brad King's avatar
Brad King committed
675
  set(CMAKE_TESTS_CDASH_SERVER "http://open.cdash.org")
676
endif()
677

678
if(CMake_TEST_EXTERNAL_CMAKE)
679
  set(KWIML_TEST_ENABLE 1)
680
  add_subdirectory(Utilities/KWIML)
681
endif()
682

683 684 685
if(NOT CMake_TEST_EXTERNAL_CMAKE)
  # build the utilities (a macro defined in this file)
  CMAKE_BUILD_UTILITIES()
686

687 688 689 690 691 692 693 694 695 696
  # On NetBSD ncurses is required, since curses doesn't have the wsyncup()
  # function. ncurses is installed via pkgsrc, so the library is in /usr/pkg/lib,
  # which isn't in the default linker search path. So without RPATH ccmake
  # doesn't run and the build doesn't succeed since ccmake is executed for
  # generating the documentation.
  if(BUILD_CursesDialog)
    get_filename_component(_CURSES_DIR "${CURSES_LIBRARY}" PATH)
    set(CURSES_NEED_RPATH FALSE)
    if(NOT "${_CURSES_DIR}" STREQUAL "/lib" AND NOT "${_CURSES_DIR}" STREQUAL "/usr/lib" AND NOT "${_CURSES_DIR}" STREQUAL "/lib64" AND NOT "${_CURSES_DIR}" STREQUAL "/usr/lib64")
      set(CURSES_NEED_RPATH TRUE)
697 698
    endif()
  endif()
699

700 701 702 703 704 705
  if(BUILD_QtDialog)
    if(APPLE)
      set(CMAKE_BUNDLE_VERSION
        "${CMake_VERSION_MAJOR}.${CMake_VERSION_MINOR}.${CMake_VERSION_PATCH}")
      set(CMAKE_BUNDLE_LOCATION "${CMAKE_INSTALL_PREFIX}")
      # make sure CMAKE_INSTALL_PREFIX ends in /
706
      if(NOT CMAKE_INSTALL_PREFIX MATCHES "/$")
707 708 709 710 711 712 713 714 715 716
        set(CMAKE_INSTALL_PREFIX "${CMAKE_INSTALL_PREFIX}/")
      endif()
      set(CMAKE_INSTALL_PREFIX
        "${CMAKE_INSTALL_PREFIX}CMake.app/Contents")
    endif()

    set(QT_NEED_RPATH FALSE)
    if(NOT "${QT_LIBRARY_DIR}" STREQUAL "/lib" AND NOT "${QT_LIBRARY_DIR}" STREQUAL "/usr/lib" AND NOT "${QT_LIBRARY_DIR}" STREQUAL "/lib64" AND NOT "${QT_LIBRARY_DIR}" STREQUAL "/usr/lib64")
      set(QT_NEED_RPATH TRUE)
    endif()
717
  endif()
718 719


720 721 722 723 724 725 726 727 728 729 730 731 732
  # The same might be true on other systems for other libraries.
  # Then only enable RPATH if we have are building at least with cmake 2.4,
  # since this one has much better RPATH features than cmake 2.2.
  # The executables are then built with the RPATH for the libraries outside
  # the build tree, which is both the build and the install RPATH.
  if (UNIX)
    if(   CMAKE_USE_SYSTEM_CURL   OR  CMAKE_USE_SYSTEM_ZLIB
          OR  CMAKE_USE_SYSTEM_EXPAT  OR  CTEST_USE_XMLRPC  OR  CURSES_NEED_RPATH  OR  QT_NEED_RPATH)
      set(CMAKE_SKIP_RPATH OFF CACHE INTERNAL "CMake built with RPATH.")
      set(CMAKE_INSTALL_RPATH_USE_LINK_PATH TRUE)
      set(CMAKE_BUILD_WITH_INSTALL_RPATH TRUE)
    endif()
  endif ()
733 734


735 736 737 738 739 740 741
  # add the uninstall support
  configure_file(
    "${CMAKE_CURRENT_SOURCE_DIR}/cmake_uninstall.cmake.in"
    "${CMAKE_CURRENT_BINARY_DIR}/cmake_uninstall.cmake"
    @ONLY)
  add_custom_target(uninstall
    "${CMAKE_COMMAND}" -P "${CMAKE_CURRENT_BINARY_DIR}/cmake_uninstall.cmake")
742

743 744 745
  include (CMakeCPack.cmake)

endif()
746

747 748
# setup some Testing support (a macro defined in this file)
CMAKE_SETUP_TESTING()
749

750 751
if(NOT CMake_TEST_EXTERNAL_CMAKE)
  if(NOT CMake_VERSION_IS_RELEASE)
752
    if(CMAKE_C_COMPILER_ID STREQUAL "GNU" AND
753 754 755 756 757 758 759 760 761 762 763 764 765 766 767
        NOT "${CMAKE_C_COMPILER_VERSION}" VERSION_LESS 4.2)
      set(C_FLAGS_LIST -Wcast-align -Werror-implicit-function-declaration -Wchar-subscripts
                       -Wall -W -Wpointer-arith -Wwrite-strings -Wformat-security
                       -Wmissing-format-attribute -fno-common -Wundef
      )
      set(CXX_FLAGS_LIST -Wnon-virtual-dtor -Wcast-align -Wchar-subscripts -Wall -W
                         -Wshadow -Wpointer-arith -Wformat-security -Wundef
      )

      foreach(FLAG_LANG  C CXX)
        foreach(FLAG ${${FLAG_LANG}_FLAGS_LIST})
          if(NOT " ${CMAKE_${FLAG_LANG}_FLAGS} " MATCHES " ${FLAG} ")
            set(CMAKE_${FLAG_LANG}_FLAGS "${CMAKE_${FLAG_LANG}_FLAGS} ${FLAG}")
          endif()
        endforeach()
768 769
      endforeach()

770 771 772
      unset(C_FLAGS_LIST)
      unset(CXX_FLAGS_LIST)
    endif()
773
  endif()
774 775 776 777

  # build the remaining subdirectories
  add_subdirectory(Source)
  add_subdirectory(Utilities)
778
endif()
779

780
add_subdirectory(Tests)
781

782 783 784
if(NOT CMake_TEST_EXTERNAL_CMAKE)
  if(BUILD_TESTING)
    CMAKE_SET_TARGET_FOLDER(CMakeLibTests "Tests")
785 786 787
    IF(TARGET CMakeServerLibTests)
      CMAKE_SET_TARGET_FOLDER(CMakeServerLibTests "Tests")
    ENDIF()
788 789 790 791
  endif()
  if(TARGET documentation)
    CMAKE_SET_TARGET_FOLDER(documentation "Documentation")
  endif()
792
endif()
793

794
# add a test
795
add_test(SystemInformationNew "${CMAKE_CMAKE_COMMAND}"
796
  --system-information  -G "${CMAKE_GENERATOR}" )
797

798 799 800 801 802 803 804 805 806 807 808 809 810 811 812
if(NOT CMake_TEST_EXTERNAL_CMAKE)
  # Install license file as it requires.
  install(FILES Copyright.txt DESTINATION ${CMAKE_DOC_DIR})

  # Install script directories.
  install(
    DIRECTORY Help Modules Templates
    DESTINATION ${CMAKE_DATA_DIR}
    FILE_PERMISSIONS OWNER_READ OWNER_WRITE GROUP_READ WORLD_READ
    DIRECTORY_PERMISSIONS OWNER_READ OWNER_EXECUTE OWNER_WRITE
                          GROUP_READ GROUP_EXECUTE
                          WORLD_READ WORLD_EXECUTE
    PATTERN "*.sh*" PERMISSIONS OWNER_READ OWNER_EXECUTE OWNER_WRITE
                                GROUP_READ GROUP_EXECUTE
                                WORLD_READ WORLD_EXECUTE
813
    REGEX "Help/dev($|/)" EXCLUDE
814 815 816 817 818
    )

  # Install auxiliary files integrating with other tools.
  add_subdirectory(Auxiliary)
endif()