CMake/FollySetup.cmake

   1 # folly-config.h is a generated file from autotools
   2 # We need to do the equivalent checks here and use
   3 # add_definitions as needed
   4 add_definitions(-DFOLLY_NO_CONFIG=1)
   5
   6 INCLUDE(CheckCXXSourceCompiles)
   7 CHECK_CXX_SOURCE_COMPILES("
   8 extern \"C\" void (*test_ifunc(void))() { return 0; }
   9 void func() __attribute__((ifunc(\"test_ifunc\")));
  10 " FOLLY_IFUNC)
  11 if (FOLLY_IFUNC)
  12   add_definitions("-DHAVE_IFUNC=1")
  13 endif()
  14
  15 if (LINUX OR FREEBSD)
  16   set(CMAKE_REQUIRED_LIBRARIES rt ${LIBPTHREAD_LIBRARIES})
  17 else()
  18   set(CMAKE_REQUIRED_LIBRARIES ${LIBPTHREAD_LIBRARIES})
  19 endif()
  20
  21 include(CheckFunctionExists)
  22 CHECK_FUNCTION_EXISTS("clock_gettime" HAVE_CLOCK_GETTIME)
  23 CHECK_FUNCTION_EXISTS("pthread_atfork" HAVE_PTHREAD_ATFORK)
  24 CHECK_FUNCTION_EXISTS("pthread_spin_lock" HAVE_PTHREAD_SPINLOCK)
  25
  26 if (HAVE_CLOCK_GETTIME)
  27   add_definitions("-DFOLLY_HAVE_CLOCK_GETTIME=1")
  28 endif()
  29 if (HAVE_PTHREAD_ATFORK)
  30   add_definitions("-DFOLLY_HAVE_PTHREAD_ATFORK=1")
  31 endif()
  32 if (HAVE_PTHREAD_SPINLOCK)
  33   add_definitions("-DFOLLY_HAVE_PTHREAD_SPINLOCK_T=1")
  34 endif()
  35 set(CMAKE_REQUIRED_LIBRARIES)
  36
  37 find_path(FEATURES_H_INCLUDE_DIR NAMES features.h)
  38 if (FEATURES_H_INCLUDE_DIR)
  39   include_directories("${FEATURES_H_INCLUDE_DIR}")
  40   add_definitions("-DFOLLY_HAVE_FEATURES_H=1")
  41 endif()
  42
  43 if("${CMAKE_CXX_COMPILER_ID}" STREQUAL "Clang")
  44   if(NOT CLANG_FORCE_LIBSTDCXX)
  45     add_definitions("-DFOLLY_USE_LIBCPP=1")
  46   endif()
  47 endif()
  48
  49 CHECK_CXX_SOURCE_COMPILES("
  50 int main(int argc, char** argv) {
  51   unsigned size = argc;
  52   char data[size];
  53   return 0;
  54 }
  55 " FOLLY_HAVE_VLA)
  56 if (FOLLY_HAVE_VLA)
  57   add_definitions("-DFOLLY_HAVE_VLA=1")
  58 elseif()
  59   add_definitions("-DFOLLY_HAVE_VLA=0")
  60 endif()
  61
  62 include(CheckIncludeFileCXX)
  63 check_include_file_cxx(bits/functexcept.h FOLLY_HAVE_BITS_FUNCTEXCEPT_H)
  64 if (FOLLY_HAVE_BITS_FUNCTEXCEPT_H)
  65   add_definitions(-DFOLLY_HAVE_BITS_FUNCTEXCEPT_H=1)
  66 else()
  67   add_definitions(-DFOLLY_HAVE_BITS_FUNCTEXCEPT_H=0)
  68 endif()
  69
  70 include(CheckIncludeFile)
  71 check_include_file(linux/membarrier.h FOLLY_HAVE_LINUX_MEMBARRIER_H)
  72 if (FOLLY_HAVE_LINUX_MEMBARRIER_H)
  73   add_definitions(-DFOLLY_HAVE_LINUX_MEMBARRIER_H=1)
  74 else()
  75   add_definitions(-DFOLLY_HAVE_LINUX_MEMBARRIER_H=0)
  76 endif()