Add Code Coverage support using CMake (#531)

build/CompilerAndLinker.cmake

@@ -49,7 +49,7 @@ if(MSVC)
     list(APPEND COMPILER_SWITCHES "$<$<NOT:$<CONFIG:DEBUG>>:/guard:cf>")
     list(APPEND LINKER_SWITCHES /DYNAMICBASE /NXCOMPAT /INCREMENTAL:NO)
 
-    if((${DIRECTX_ARCH} MATCHES "x86")
+    if((${DIRECTX_ARCH} STREQUAL "x86")
        OR ((CMAKE_SIZEOF_VOID_P EQUAL 4) AND (NOT (${DIRECTX_ARCH} MATCHES "^arm"))))
       list(APPEND LINKER_SWITCHES /SAFESEH)
     endif()
@@ -71,7 +71,7 @@ if(XBOX_CONSOLE_TARGET STREQUAL "scarlett")
 elseif(XBOX_CONSOLE_TARGET MATCHES "xboxone|durango")
     list(APPEND COMPILER_SWITCHES  $<IF:$<CXX_COMPILER_ID:MSVC>,/favor:AMD64 /arch:AVX,-march=btver2>)
 elseif(NOT (${DIRECTX_ARCH} MATCHES "^arm"))
-    if((${DIRECTX_ARCH} MATCHES "x86") OR (CMAKE_SIZEOF_VOID_P EQUAL 4))
+    if((${DIRECTX_ARCH} STREQUAL "x86") OR (CMAKE_SIZEOF_VOID_P EQUAL 4))
         set(ARCH_SSE2 $<$<CXX_COMPILER_ID:MSVC,Intel>:/arch:SSE2> $<$<NOT:$<CXX_COMPILER_ID:MSVC,Intel>>:-msse2>)
     else()
         set(ARCH_SSE2 $<$<NOT:$<CXX_COMPILER_ID:MSVC,Intel>>:-msse2>)
@@ -207,3 +207,18 @@ if(CMAKE_CXX_COMPILER_ID MATCHES "MSVC")
     set(ASAN_SWITCHES /fsanitize=address /fsanitize-coverage=inline-8bit-counters /fsanitize-coverage=edge /fsanitize-coverage=trace-cmp /fsanitize-coverage=trace-div)
     set(ASAN_LIBS sancov.lib)
 endif()
+
+#--- Code coverage
+if(CMAKE_CXX_COMPILER_ID MATCHES "Clang")
+    set(COV_COMPILER_SWITCHES --coverage -g)
+
+    if(${DIRECTX_ARCH} STREQUAL "x64")
+      set(COV_LIBS clang_rt.profile-x86_64.lib)
+    elseif(${DIRECTX_ARCH} STREQUAL "x86")
+      set(COV_LIBS clang_rt.profile-i386.lib)
+    elseif(${DIRECTX_ARCH} STREQUAL "arm64")
+      set(COV_LIBS clang_rt.profile-aarch64.lib)
+    endif()
+elseif((CMAKE_CXX_COMPILER_ID MATCHES "MSVC") AND (CMAKE_CXX_COMPILER_VERSION VERSION_GREATER_EQUAL 19.33))
+    set(COV_LINKER_SWITCHES /PROFILE)
+endif()