[compiler-rt] tsan/tests: Add missing -I for top-level include directory

[mgorny]

Summary

Otherwise stand-alone build for tests fails due to missing include files.

[dvyukov]

What is standalone build? And how does it fail?

[mgorny]

In D23835#602545, @dvyukov wrote:

What is standalone build?

A stand-alone build is a build performed outside LLVM source tree, e.g. out of split checkout, done against installed LLVM. In this case, with -DLLVM_MAIN_SRC_DIR= pointing explicitly to an external LLVM source tree needed for tests.

And how does it fail?

Actually, it seems that it doesn't fail anymore. I suppose it was fixed elsewhere. I'm sorry for the noise.

lib/tsan/tests/CMakeLists.txt

 include_directories(../rtl)
 
 add_custom_target(TsanUnitTests)
 set_target_properties(TsanUnitTests PROPERTIES
   FOLDER "TSan unittests")
 
 set(TSAN_UNITTEST_CFLAGS
   ${TSAN_CFLAGS}
   ${COMPILER_RT_UNITTEST_CFLAGS}
   ${COMPILER_RT_GTEST_CFLAGS}
+  -I${COMPILER_RT_SOURCE_DIR}/include
   -I${COMPILER_RT_SOURCE_DIR}/lib
   -I${COMPILER_RT_SOURCE_DIR}/lib/tsan/rtl
   -DGTEST_HAS_RTTI=0)
 
 set(TSAN_RTL_HEADERS)
 foreach (header ${TSAN_HEADERS})
   list(APPEND TSAN_RTL_HEADERS ${CMAKE_CURRENT_SOURCE_DIR}/../${header})
 endforeach()