[libFuzzer] Diff 35 - [FuzzerSupport] Update Cmake files to include LLVMFuzzerSupport library.

[aizatsky]

Does this mean that previous changes do not compile on its own?

[mpividori]

@aizatsky Yes, previous patches doesn't compile on their own. I decided to create diffs as small as possible to facilitate the review process. If you prefer I can merge many of the diffs to make them self-contained.

lib/Fuzzer/CMakeLists.txt

 set(LIBFUZZER_FLAGS_BASE "${CMAKE_CXX_FLAGS}")
 # Disable the coverage and sanitizer instrumentation for the fuzzer itself.
 set(CMAKE_CXX_FLAGS "${LIBFUZZER_FLAGS_BASE} -fno-sanitize-coverage=trace-pc-guard,edge,trace-cmp,indirect-calls,8bit-counters -Werror")
 if( LLVM_USE_SANITIZE_COVERAGE )
   if(NOT "${LLVM_USE_SANITIZER}" STREQUAL "Address")
     message(FATAL_ERROR
       "LibFuzzer and its tests require LLVM_USE_SANITIZER=Address and "
       "LLVM_USE_SANITIZE_COVERAGE=YES to be set."
       )
   endif()
+
+  add_subdirectory(Support)
+
   add_library(LLVMFuzzerNoMainObjects OBJECT
     FuzzerCrossOver.cpp
     FuzzerDriver.cpp
     FuzzerExtFunctionsDlsym.cpp
     FuzzerExtFunctionsWeak.cpp
     FuzzerExtFunctionsWeakAlias.cpp
     FuzzerLoop.cpp
     FuzzerMerge.cpp
     FuzzerMutate.cpp
     FuzzerSHA1.cpp
     FuzzerTracePC.cpp
     FuzzerTraceState.cpp
     FuzzerUtil.cpp
     )
   add_library(LLVMFuzzerNoMain STATIC
     $<TARGET_OBJECTS:LLVMFuzzerNoMainObjects>
     )
   target_link_libraries(LLVMFuzzerNoMain ${PTHREAD_LIB})
+  target_link_libraries(LLVMFuzzerNoMain LLVMFuzzerSupport)
   add_library(LLVMFuzzer STATIC
     FuzzerMain.cpp
     $<TARGET_OBJECTS:LLVMFuzzerNoMainObjects>
     )
   target_link_libraries(LLVMFuzzer ${PTHREAD_LIB})
+  target_link_libraries(LLVMFuzzer LLVMFuzzerSupport)
 
   if( LLVM_INCLUDE_TESTS )
     add_subdirectory(test)
   endif()
 endif()

lib/Fuzzer/Support/CMakeLists.txt

+add_library(LLVMFuzzerSupport STATIC
+  Util.cpp
+  UtilDarwin.cpp
+  UtilLinux.cpp
+  UtilPosix.cpp
+  UtilWindows.cpp
+  UtilIO.cpp
+  UtilIOPosix.cpp
+  UtilIOWindows.cpp
+  )