cmake/Modules/FindLLVM.cmake

   1 find_program(LLVM_CONFIG NAMES llvm-config-3.5 llvm-config llvm-config-3.6)
   2
   3 if(LLVM_CONFIG)
   4   execute_process(COMMAND ${LLVM_CONFIG} --version
   5         OUTPUT_VARIABLE LLVM_VERSION)
   6
   7   if(((${LLVM_VERSION} VERSION_LESS 3.7.0)
   8                 AND (${LLVM_VERSION} VERSION_GREATER 3.5))
   9           OR (${LLVM_VERSION} VERSION_EQUAL 3.5))
  10
  11         execute_process(COMMAND ${LLVM_CONFIG} --cxxflags
  12           OUTPUT_VARIABLE LLVM_CFLAGS      OUTPUT_STRIP_TRAILING_WHITESPACE)
  13         execute_process(COMMAND ${LLVM_CONFIG} --ldflags
  14           OUTPUT_VARIABLE LLVM_LDFLAGS     OUTPUT_STRIP_TRAILING_WHITESPACE)
  15         execute_process(COMMAND ${LLVM_CONFIG} --libs
  16           OUTPUT_VARIABLE LLVM_LIBS        OUTPUT_STRIP_TRAILING_WHITESPACE)
  17         execute_process(COMMAND ${LLVM_CONFIG} --system-libs
  18           OUTPUT_VARIABLE LLVM_SYSTEM_LIBS OUTPUT_STRIP_TRAILING_WHITESPACE)
  19
  20         string(REPLACE -O2 "" LLVM_CFLAGS ${LLVM_CFLAGS})
  21         string(REPLACE -fno-exceptions "" LLVM_CFLAGS ${LLVM_CFLAGS})
  22         string(REPLACE -fno-rtti "" LLVM_CFLAGS ${LLVM_CFLAGS})
  23         string(REPLACE -DNDEBUG "" LLVM_CFLAGS ${LLVM_CFLAGS})
  24         string(REPLACE -I "-isystem" LLVM_CFLAGS ${LLVM_CFLAGS})
  25
  26         separate_arguments(LLVM_CFLAGS)
  27
  28         if(${LLVM_VERSION} VERSION_LESS 3.6)
  29           set(LLVM_CFLAGS ${LLVM_CFLAGS} -DLLVM_35)
  30           set(LLVM_DYNAMIC_LIB -lLLVM-3.5)
  31         else()
  32           set(LLVM_CFLAGS ${LLVM_CFLAGS} -DLLVM_36)
  33           set(LLVM_DYNAMIC_LIB -lLLVM-3.6)
  34           message(WARNING "LLVM 3.6 support is highly experimental and may be broken in interesting ways")
  35         endif()
  36   endif()
  37 endif()
  38
  39 if(NOT DEFINED LLVM_CFLAGS)
  40   message(SEND_ERROR "LLVM 3.5 required but not found")
  41 endif()