CMake/HPHPFindLibs.cmake

   1 #
   2 #   +----------------------------------------------------------------------+
   3 #   | HipHop for PHP                                                       |
   4 #   +----------------------------------------------------------------------+
   5 #   | Copyright (c) 2010 Facebook, Inc. (http://www.facebook.com)          |
   6 #   | Copyright (c) 1997-2010 The PHP Group                                |
   7 #   +----------------------------------------------------------------------+
   8 #   | This source file is subject to version 3.01 of the PHP license,      |
   9 #   | that is bundled with this package in the file LICENSE, and is        |
  10 #   | available through the world-wide-web at the following url:           |
  11 #   | http://www.php.net/license/3_01.txt                                  |
  12 #   | If you did not receive a copy of the PHP license and are unable to   |
  13 #   | obtain it through the world-wide-web, please send a note to          |
  14 #   | license@php.net so we can mail you a copy immediately.               |
  15 #   +----------------------------------------------------------------------+
  16 #
  17
  18 include(CheckFunctionExists)
  19
  20 # libdl
  21 find_package(LibDL)
  22 if (LIBDL_INCLUDE_DIRS)
  23   add_definitions("-DHAVE_LIBDL")
  24   include_directories(${LIBDL_INCLUDE_DIRS})
  25   if (LIBDL_NEEDS_UNDERSCORE)
  26     add_definitions("-DLIBDL_NEEDS_UNDERSCORE")
  27   endif()
  28 endif()
  29
  30 # google-glog
  31 find_package(Glog REQUIRED)
  32 if (LIBGLOG_STATIC)
  33   add_definitions("-DGOOGLE_GLOG_DLL_DECL=")
  34 endif()
  35 include_directories(${LIBGLOG_INCLUDE_DIR})
  36
  37 # inotify checks
  38 find_package(Libinotify)
  39 if (LIBINOTIFY_INCLUDE_DIR)
  40   include_directories(${LIBINOTIFY_INCLUDE_DIR})
  41 endif()
  42
  43 # mysql checks - if we're using async mysql, we use fbmysqlclient from
  44 # third-party/ instead
  45 if (ENABLE_ASYNC_MYSQL)
  46   include_directories(
  47     ${RE2_INCLUDE_DIR}
  48     ${TP_DIR}/squangle/src/
  49     ${TP_DIR}/fb-mysql/src/include/
  50   )
  51   set(MYSQL_CLIENT_LIB_DIR ${TP_DIR}/fb-mysql/src/)
  52   set(MYSQL_CLIENT_LIBS
  53     ${MYSQL_CLIENT_LIB_DIR}/libmysql/libfbmysqlclient_r.a
  54   )
  55 else()
  56   find_package(MySQL REQUIRED)
  57   link_directories(${MYSQL_LIB_DIR})
  58   include_directories(${MYSQL_INCLUDE_DIR})
  59 endif()
  60 MYSQL_SOCKET_SEARCH()
  61 if (MYSQL_UNIX_SOCK_ADDR)
  62   add_definitions(-DPHP_MYSQL_UNIX_SOCK_ADDR="${MYSQL_UNIX_SOCK_ADDR}")
  63 else ()
  64   message(FATAL_ERROR "Could not find MySQL socket path - if you install a MySQL server, this should be automatically detected. Alternatively, specify -DMYSQL_UNIX_SOCK_ADDR=/path/to/mysql.socket ; if you don't care about unix socket support for MySQL, specify -DMYSQL_UNIX_SOCK_ADDR=/dev/null")
  65 endif ()
  66
  67 # pcre checks
  68 find_package(PCRE)
  69 include_directories(${PCRE_INCLUDE_DIR})
  70
  71 # libevent checks
  72 find_package(LibEvent REQUIRED)
  73 include_directories(${LIBEVENT_INCLUDE_DIR})
  74
  75 set(CMAKE_REQUIRED_LIBRARIES "${LIBEVENT_LIB}")
  76 CHECK_FUNCTION_EXISTS("evhttp_bind_socket_with_fd" HAVE_CUSTOM_LIBEVENT)
  77 if(HAVE_CUSTOM_LIBEVENT)
  78         message("Using custom LIBEVENT")
  79         set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -DHAVE_CUSTOM_LIBEVENT")
  80 endif()
  81 set(CMAKE_REQUIRED_LIBRARIES)
  82
  83 # libXed
  84 if (ENABLE_XED)
  85   find_package(LibXed)
  86   if (LibXed_FOUND)
  87     include_directories(${LibXed_INCLUDE_DIR})
  88   endif()
  89   add_definitions("-DHAVE_LIBXED")
  90 else()
  91   message(STATUS "XED is disabled")
  92 endif()
  93
  94 # CURL checks
  95 find_package(CURL REQUIRED)
  96 include_directories(${CURL_INCLUDE_DIR})
  97 if (CURL_STATIC)
  98   add_definitions("-DCURL_STATICLIB")
  99 endif()
 100
 101 set(CMAKE_REQUIRED_LIBRARIES "${CURL_LIBRARIES}")
 102 CHECK_FUNCTION_EXISTS("curl_multi_select" HAVE_CURL_MULTI_SELECT)
 103 CHECK_FUNCTION_EXISTS("curl_multi_wait" HAVE_CURL_MULTI_WAIT)
 104 if (HAVE_CURL_MULTI_SELECT)
 105   add_definitions("-DHAVE_CURL_MULTI_SELECT")
 106 endif()
 107 if (HAVE_CURL_MULTI_WAIT)
 108   add_definitions("-DHAVE_CURL_MULTI_WAIT")
 109 endif()
 110 set(CMAKE_REQUIRED_LIBRARIES)
 111
 112 # LibXML2 checks
 113 find_package(LibXml2 REQUIRED)
 114 include_directories(${LIBXML2_INCLUDE_DIR})
 115 add_definitions(${LIBXML2_DEFINITIONS})
 116
 117 # libsqlite3
 118 find_package(LibSQLite)
 119 if (LIBSQLITE3_INCLUDE_DIR)
 120   include_directories(${LIBSQLITE3_INCLUDE_DIR})
 121 endif ()
 122
 123 # libdouble-conversion
 124 find_package(DoubleConversion)
 125 if (DOUBLE_CONVERSION_INCLUDE_DIR)
 126   include_directories(${DOUBLE_CONVERSION_INCLUDE_DIR})
 127 endif ()
 128
 129 # liblz4
 130 find_package(LZ4)
 131 if (LZ4_FOUND)
 132   include_directories(${LZ4_INCLUDE_DIR})
 133 endif()
 134
 135 # fastlz
 136 find_package(FastLZ)
 137 if (FASTLZ_INCLUDE_DIR)
 138   include_directories(${FASTLZ_INCLUDE_DIR})
 139 endif()
 140
 141 # ICU
 142 find_package(ICU REQUIRED)
 143 if (ICU_FOUND)
 144   if (ICU_VERSION VERSION_LESS "4.2")
 145     unset(ICU_FOUND CACHE)
 146     unset(ICU_INCLUDE_DIRS CACHE)
 147     unset(ICU_LIBRARIES CACHE)
 148     message(FATAL_ERROR "ICU is too old, found ${ICU_VERSION} and we need 4.2")
 149   endif ()
 150   include_directories(${ICU_INCLUDE_DIRS})
 151   if (ICU_STATIC)
 152     add_definitions("-DU_EXPORT=")
 153     add_definitions("-DU_IMPORT=")
 154   endif()
 155   # Everything is either in the `icu61` namespace or `icu` namespace, depending
 156   # on another definition. There's an implicit `using namespace WHATEVER;` in
 157   # ICU4c < 61.1, but now that's opt-in rather than opt-out.
 158   add_definitions("-DU_USING_ICU_NAMESPACE=1")
 159 endif (ICU_FOUND)
 160
 161 # jemalloc/tmalloc and profiler
 162 if (USE_GOOGLE_HEAP_PROFILER OR USE_GOOGLE_CPU_PROFILER)
 163   FIND_LIBRARY(GOOGLE_PROFILER_LIB profiler)
 164   FIND_PATH(GOOGLE_PROFILER_INCLUDE_DIR NAMES google/profiler.h)
 165   if (GOOGLE_PROFILER_INCLUDE_DIR)
 166     include_directories(${GOOGLE_PROFILER_INCLUDE_DIR})
 167   endif()
 168   if (GOOGLE_PROFILER_LIB)
 169     message(STATUS "Found Google profiler: ${GOOGLE_PROFILER_LIB}")
 170     if (USE_GOOGLE_CPU_PROFILER)
 171       set(GOOGLE_CPU_PROFILER_ENABLED 1)
 172     endif()
 173   else()
 174     message(STATUS "Can't find Google profiler")
 175   endif()
 176 endif()
 177
 178 if (USE_GOOGLE_HEAP_PROFILER AND GOOGLE_PROFILER_LIB)
 179   FIND_LIBRARY(GOOGLE_TCMALLOC_FULL_LIB tcmalloc)
 180   if (GOOGLE_TCMALLOC_FULL_LIB)
 181     message(STATUS "Found full tcmalloc: ${GOOGLE_TCMALLOC_FULL_LIB}")
 182     set(GOOGLE_HEAP_PROFILER_ENABLED 1)
 183     set(GOOGLE_TCMALLOC_ENABLED 1)
 184   else()
 185     message(STATUS "Can't find full tcmalloc - heap profiling is disabled")
 186   endif()
 187 endif()
 188
 189 if(USE_JEMALLOC AND NOT GOOGLE_TCMALLOC_ENABLED)
 190   add_definitions(-DUSE_JEMALLOC=1)
 191   set(JEMALLOC_ENABLED 1)
 192 else()
 193   add_definitions(-DNO_JEMALLOC=1)
 194 endif()
 195
 196 if (USE_TCMALLOC AND NOT JEMALLOC_ENABLED AND NOT GOOGLE_TCMALLOC_ENABLED)
 197   FIND_LIBRARY(GOOGLE_TCMALLOC_MIN_LIB tcmalloc_minimal)
 198   if (GOOGLE_TCMALLOC_MIN_LIB)
 199     message(STATUS "Found minimal tcmalloc: ${GOOGLE_TCMALLOC_MIN_LIB}")
 200     set(GOOGLE_TCMALLOC_ENABLED 1)
 201   else()
 202     message(STATUS "Can't find minimal tcmalloc")
 203   endif()
 204 endif()
 205
 206 if (GOOGLE_TCMALLOC_ENABLED)
 207   add_definitions(-DGOOGLE_TCMALLOC=1)
 208 else()
 209   add_definitions(-DNO_TCMALLOC=1)
 210 endif()
 211 if (GOOGLE_HEAP_PROFILER_ENABLED)
 212   add_definitions(-DGOOGLE_HEAP_PROFILER=1)
 213 endif()
 214 if (GOOGLE_CPU_PROFILER_ENABLED)
 215   add_definitions(-DGOOGLE_CPU_PROFILER=1)
 216 endif()
 217
 218 # HHProf
 219 if (JEMALLOC_ENABLED AND ENABLE_HHPROF)
 220   add_definitions(-DENABLE_HHPROF=1)
 221 endif()
 222
 223 # tbb libs
 224 find_package(TBB REQUIRED)
 225 if (${TBB_INTERFACE_VERSION} LESS 5005)
 226   unset(TBB_FOUND CACHE)
 227   unset(TBB_INCLUDE_DIRS CACHE)
 228   unset(TBB_LIBRARIES CACHE)
 229   message(FATAL_ERROR "TBB is too old, please install at least 3.0(5005), preferably 4.0(6000) or higher")
 230 endif()
 231 include_directories(${TBB_INCLUDE_DIRS})
 232 link_directories(${TBB_LIBRARY_DIRS})
 233
 234 # OpenSSL libs
 235 find_package(OpenSSL REQUIRED)
 236 include_directories(${OPENSSL_INCLUDE_DIR})
 237
 238 # LibreSSL explicitly refuses to support RAND_egd()
 239 SET(CMAKE_REQUIRED_INCLUDES ${OPENSSL_INCLUDE_DIR})
 240 SET(CMAKE_REQUIRED_LIBRARIES ${OPENSSL_LIBRARIES})
 241 INCLUDE(CheckCXXSourceCompiles)
 242 CHECK_CXX_SOURCE_COMPILES("#include <openssl/rand.h>
 243 int main() {
 244   return RAND_egd(\"/dev/null\");
 245 }" OPENSSL_HAVE_RAND_EGD)
 246 if (NOT OPENSSL_HAVE_RAND_EGD)
 247   add_definitions("-DOPENSSL_NO_RAND_EGD")
 248 endif()
 249 CHECK_CXX_SOURCE_COMPILES("#include <openssl/ssl.h>
 250 int main() {
 251   return SSL_set_alpn_protos(nullptr, nullptr, 0);
 252 }" OPENSSL_HAVE_ALPN)
 253 SET(CMAKE_REQUIRED_INCLUDES)
 254 SET(CMAKE_REQUIRED_LIBRARIES)
 255
 256
 257 # ZLIB
 258 find_package(ZLIB REQUIRED)
 259 include_directories(${ZLIB_INCLUDE_DIR})
 260
 261 # libpthreads
 262 find_package(PThread REQUIRED)
 263 include_directories(${LIBPTHREAD_INCLUDE_DIRS})
 264 if (LIBPTHREAD_STATIC)
 265   add_definitions("-DPTW32_STATIC_LIB")
 266 endif()
 267
 268 OPTION(
 269   NON_DISTRIBUTABLE_BUILD
 270   "Use libraries which may result in a binary that can not be legally distributed"
 271   OFF
 272 )
 273
 274 # Either Readline or Editline (for hphpd)
 275 if(NON_DISTRIBUTABLE_BUILD)
 276   find_package(Readline)
 277 endif()
 278 if (NOT READLINE_INCLUDE_DIR)
 279   find_package(Editline)
 280 endif()
 281
 282 if (NON_DISTRIBUTABLE_BUILD AND READLINE_INCLUDE_DIR)
 283   if (READLINE_STATIC)
 284     add_definitions("-DREADLINE_STATIC")
 285   endif()
 286   include_directories(${READLINE_INCLUDE_DIR})
 287 elseif (EDITLINE_INCLUDE_DIRS)
 288   add_definitions("-DUSE_EDITLINE")
 289   include_directories(${EDITLINE_INCLUDE_DIRS})
 290 else()
 291   message(FATAL_ERROR "Could not find Readline or Editline")
 292 endif()
 293
 294 if (NOT WINDOWS)
 295   find_package(LibDwarf REQUIRED)
 296   include_directories(${LIBDWARF_INCLUDE_DIRS})
 297   if (LIBDWARF_CONST_NAME)
 298     add_definitions("-DLIBDWARF_CONST_NAME")
 299   endif()
 300   if (LIBDWARF_USE_INIT_C)
 301     add_definitions("-DLIBDWARF_USE_INIT_C")
 302   endif()
 303
 304   find_package(LibElf REQUIRED)
 305   include_directories(${LIBELF_INCLUDE_DIRS})
 306   if (ELF_GETSHDRSTRNDX)
 307     add_definitions("-DHAVE_ELF_GETSHDRSTRNDX")
 308   endif()
 309 endif()
 310
 311 FIND_LIBRARY(CRYPT_LIB NAMES xcrypt crypt crypto)
 312 if (LINUX OR FREEBSD)
 313   FIND_LIBRARY (RT_LIB rt)
 314 endif()
 315
 316 if (LINUX)
 317   FIND_LIBRARY (CAP_LIB cap)
 318
 319   if (NOT CAP_LIB)
 320     message(FATAL_ERROR "You need to install libcap")
 321   endif()
 322 endif()
 323
 324 if (LINUX OR APPLE)
 325   FIND_LIBRARY (DL_LIB dl)
 326   FIND_LIBRARY (RESOLV_LIB resolv)
 327 endif()
 328
 329 if (FREEBSD)
 330   FIND_LIBRARY (EXECINFO_LIB execinfo)
 331   if (NOT EXECINFO_LIB)
 332     message(FATAL_ERROR "You need to install libexecinfo")
 333   endif()
 334 endif()
 335
 336 if (APPLE)
 337   find_library(KERBEROS_LIB NAMES gssapi_krb5)
 338
 339   # This is required by Homebrew's libc. See
 340   # https://github.com/facebook/hhvm/pull/5728#issuecomment-124290712
 341   # for more info.
 342   find_package(Libpam)
 343   if (PAM_INCLUDE_PATH)
 344     include_directories(${PAM_INCLUDE_PATH})
 345   endif()
 346 endif()
 347
 348 #find_package(BISON REQUIRED)
 349 #find_package(FLEX REQUIRED)
 350
 351 #if (${FLEX_VERSION} VERSION_LESS 2.5.33)
 352 #  message(FATAL_ERROR "Flex is too old, found ${FLEX_VERSION} and we need 2.5.33")
 353 #endif()
 354
 355 include_directories(${HPHP_HOME}/hphp)
 356
 357 macro(hphp_link target)
 358   # oniguruma must be linked first for MacOS's linker to do the right thing -
 359   # that's handled in HPHPSetup.cmake
 360   #
 361   # That only handles linking - we still need to make sure that:
 362   # - oniguruma is built first, if needed (so we have the header files)
 363   # - we build with the header files in the include path
 364   if(APPLE)
 365     add_dependencies(${target} onig)
 366     target_include_directories(${target} PRIVATE $<TARGET_PROPERTY:onig,INTERFACE_INCLUDE_DIRECTORIES>)
 367   else()
 368     # Otherwise, the linker does the right thing, which sometimes means putting it after things that use it
 369     target_link_libraries(${target} onig)
 370   endif()
 371
 372   if (LIBDL_LIBRARIES)
 373     target_link_libraries(${target} ${LIBDL_LIBRARIES})
 374   endif ()
 375
 376   if (JEMALLOC_ENABLED)
 377     target_link_libraries(${target} jemalloc)
 378     add_dependencies(${target} jemalloc)
 379   endif ()
 380
 381   if (GOOGLE_HEAP_PROFILER_ENABLED OR GOOGLE_CPU_PROFILER_ENABLED)
 382     target_link_libraries(${target} ${GOOGLE_PROFILER_LIB})
 383   endif()
 384
 385   if (GOOGLE_HEAP_PROFILER_ENABLED)
 386     target_link_libraries(${target} ${GOOGLE_TCMALLOC_FULL_LIB})
 387   elseif (GOOGLE_TCMALLOC_ENABLED)
 388     target_link_libraries(${target} ${GOOGLE_TCMALLOC_MIN_LIB})
 389   endif()
 390
 391   add_dependencies(${target} boostMaybeBuild)
 392   target_link_libraries(${target} boost)
 393   add_dependencies(${target} libsodiumMaybeBuild)
 394   target_link_libraries(${target} libsodium)
 395
 396   target_link_libraries(${target} ${MYSQL_CLIENT_LIBS})
 397   if (ENABLE_ASYNC_MYSQL)
 398     target_link_libraries(${target} squangle)
 399   endif()
 400   target_link_libraries(${target} ${PCRE_LIBRARY})
 401   target_link_libraries(${target} ${ICU_DATA_LIBRARIES} ${ICU_I18N_LIBRARIES} ${ICU_LIBRARIES})
 402   target_link_libraries(${target} ${LIBEVENT_LIB})
 403   target_link_libraries(${target} ${CURL_LIBRARIES})
 404   target_link_libraries(${target} ${LIBGLOG_LIBRARY})
 405   if (LIBJSONC_LIBRARY)
 406     target_link_libraries(${target} ${LIBJSONC_LIBRARY})
 407   endif()
 408
 409   if (LIBINOTIFY_LIBRARY)
 410     target_link_libraries(${target} ${LIBINOTIFY_LIBRARY})
 411   endif()
 412
 413   if (LINUX)
 414     target_link_libraries(${target} ${CAP_LIB})
 415   endif()
 416
 417   if (LINUX OR APPLE)
 418     target_link_libraries(${target} ${RESOLV_LIB})
 419     target_link_libraries(${target} ${DL_LIB})
 420   endif()
 421
 422   if (FREEBSD)
 423     target_link_libraries(${target} ${EXECINFO_LIB})
 424   endif()
 425
 426   if (APPLE)
 427     target_link_libraries(${target} ${LIBINTL_LIBRARIES})
 428     target_link_libraries(${target} ${KERBEROS_LIB})
 429
 430     if (PAM_LIBRARY)
 431       target_link_libraries(${target} ${PAM_LIBRARY})
 432     endif()
 433   endif()
 434
 435   if (LIBPTHREAD_LIBRARIES)
 436     target_link_libraries(${target} ${LIBPTHREAD_LIBRARIES})
 437   endif()
 438
 439   target_link_libraries(${target} ${TBB_LIBRARIES})
 440   target_link_libraries(${target} ${OPENSSL_LIBRARIES})
 441   target_link_libraries(${target} ${ZLIB_LIBRARIES})
 442
 443   target_link_libraries(${target} ${LIBXML2_LIBRARIES})
 444
 445   target_link_libraries(${target} ${LBER_LIBRARIES})
 446
 447   if (CRYPT_LIB)
 448     target_link_libraries(${target} ${CRYPT_LIB})
 449   endif()
 450
 451   if (LINUX OR FREEBSD)
 452     target_link_libraries(${target} ${RT_LIB})
 453   endif()
 454
 455   if (LIBSQLITE3_FOUND AND LIBSQLITE3_LIBRARY)
 456     target_link_libraries(${target} ${LIBSQLITE3_LIBRARY})
 457   else()
 458     target_link_libraries(${target} sqlite3)
 459   endif()
 460
 461   if (DOUBLE_CONVERSION_FOUND)
 462     target_link_libraries(${target} ${DOUBLE_CONVERSION_LIBRARY})
 463   else()
 464     target_link_libraries(${target} double-conversion)
 465   endif()
 466
 467   if (LZ4_FOUND)
 468     target_link_libraries(${target} ${LZ4_LIBRARY})
 469   else()
 470     target_link_libraries(${target} lz4)
 471   endif()
 472   # The syntax used for these warnings is unparsable by Apple's Clang
 473   add_definitions("-DLZ4_DISABLE_DEPRECATE_WARNINGS=1")
 474
 475   target_link_libraries(${target} libzip)
 476
 477   if (PCRE_LIBRARY)
 478     target_link_libraries(${target} ${PCRE_LIBRARY})
 479   else()
 480     target_link_libraries(${target} pcre)
 481   endif()
 482
 483   if (LIBFASTLZ_LIBRARY)
 484     target_link_libraries(${target} ${LIBFASTLZ_LIBRARY})
 485   else()
 486     target_link_libraries(${target} fastlz)
 487   endif()
 488
 489   target_link_libraries(${target} timelib)
 490   target_link_libraries(${target} folly)
 491   target_link_libraries(${target} wangle)
 492   target_link_libraries(${target} brotlienc)
 493   target_link_libraries(${target} brotlidec)
 494   target_link_libraries(${target} brotlicommon)
 495
 496   if (ENABLE_MCROUTER)
 497     target_link_libraries(${target} mcrouter)
 498   endif()
 499
 500   if (NOT MSVC)
 501     target_link_libraries(${target} afdt)
 502   endif()
 503   target_link_libraries(${target} mbfl)
 504
 505   if (EDITLINE_LIBRARIES)
 506     target_link_libraries(${target} ${EDITLINE_LIBRARIES})
 507   elseif (READLINE_LIBRARY)
 508     target_link_libraries(${target} ${READLINE_LIBRARY})
 509   endif()
 510
 511   if (NOT WINDOWS)
 512     target_link_libraries(${target} ${LIBDWARF_LIBRARIES})
 513     target_link_libraries(${target} ${LIBELF_LIBRARIES})
 514   endif()
 515
 516   if (LINUX)
 517     target_link_libraries(${target})
 518   endif()
 519
 520   if (MSVC)
 521     target_link_libraries(${target} dbghelp.lib dnsapi.lib)
 522   endif()
 523
 524 # Check whether atomic operations require -latomic or not
 525 # See https://github.com/facebook/hhvm/issues/5217
 526   include(CheckCXXSourceCompiles)
 527   set(OLD_CMAKE_REQUIRED_FLAGS ${CMAKE_REQUIRED_FLAGS})
 528   set(CMAKE_REQUIRED_FLAGS "-std=c++1y")
 529   CHECK_CXX_SOURCE_COMPILES("
 530 #include <atomic>
 531 #include <iostream>
 532 #include <stdint.h>
 533 int main() {
 534     struct Test { int64_t val1; int64_t val2; };
 535     std::atomic<Test> s;
 536     // Do this to stop modern compilers from optimizing away the libatomic
 537     // calls in release builds, making this test always pass in release builds,
 538     // and incorrectly think that HHVM doesn't need linking against libatomic.
 539     bool (std::atomic<Test>::* volatile x)(void) const =
 540       &std::atomic<Test>::is_lock_free;
 541     std::cout << (s.*x)() << std::endl;
 542 }
 543   " NOT_REQUIRE_ATOMIC_LINKER_FLAG)
 544
 545   if(NOT "${NOT_REQUIRE_ATOMIC_LINKER_FLAG}")
 546       message(STATUS "-latomic is required to link hhvm")
 547       find_library(ATOMIC_LIBRARY NAMES atomic libatomic.so.1)
 548       target_link_libraries(${target} ${ATOMIC_LIBRARY})
 549   endif()
 550   set(CMAKE_REQUIRED_FLAGS ${OLD_CMAKE_REQUIRED_FLAGS})
 551
 552   if (ENABLE_XED)
 553     if (LibXed_FOUND)
 554         target_link_libraries(${target} ${LibXed_LIBRARY})
 555     else()
 556         target_link_libraries(${target} xed)
 557     endif()
 558   endif()
 559 endmacro()