cmake: clang: Set base compile and link options target by target

Signed-off-by: Ronald Cron <ronald.cron@arm.com>
diff --git a/CMakeLists.txt b/CMakeLists.txt
index 9cee8ce..baf9a1c 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -215,6 +215,8 @@
 function(set_base_compile_options target)
     if(CMAKE_COMPILER_IS_GNU)
         set_gnu_base_compile_options(${target})
+    elseif(CMAKE_COMPILER_IS_CLANG)
+        set_clang_base_compile_options(${target})
     endif()
 endfunction(set_base_compile_options)
 
@@ -278,22 +280,30 @@
     endif(MBEDTLS_FATAL_WARNINGS)
 endfunction(set_gnu_base_compile_options)
 
-if(CMAKE_COMPILER_IS_CLANG)
-    set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -Wall -Wextra -Wwrite-strings -Wmissing-prototypes -Wpointer-arith -Wimplicit-fallthrough -Wshadow -Wvla -Wformat=2 -Wno-format-nonliteral")
-    set(CMAKE_C_FLAGS_RELEASE     "-O2")
-    set(CMAKE_C_FLAGS_DEBUG       "-O0 -g3")
-    set(CMAKE_C_FLAGS_COVERAGE    "-O0 -g3 --coverage")
-    set(CMAKE_C_FLAGS_ASAN        "-fsanitize=address -fno-common -fsanitize=undefined -fno-sanitize-recover=all -O3")
-    set(CMAKE_C_FLAGS_ASANDBG     "-fsanitize=address -fno-common -fsanitize=undefined -fno-sanitize-recover=all -O1 -g3 -fno-omit-frame-pointer -fno-optimize-sibling-calls")
-    set(CMAKE_C_FLAGS_MEMSAN      "-fsanitize=memory -O3")
-    set(CMAKE_C_FLAGS_MEMSANDBG   "-fsanitize=memory -O1 -g3 -fno-omit-frame-pointer -fno-optimize-sibling-calls -fsanitize-memory-track-origins=2")
-    set(CMAKE_C_FLAGS_TSAN        "-fsanitize=thread -O3")
-    set(CMAKE_C_FLAGS_TSANDBG     "-fsanitize=thread -O1 -g3 -fno-omit-frame-pointer -fno-optimize-sibling-calls")
-    set(CMAKE_C_FLAGS_CHECK       "-Os")
+function(set_clang_base_compile_options target)
+    target_compile_options(${target} PRIVATE -Wall -Wextra -Wwrite-strings -Wmissing-prototypes -Wpointer-arith -Wimplicit-fallthrough -Wshadow -Wvla -Wformat=2 -Wno-format-nonliteral)
+    target_compile_options(${target} PRIVATE $<$<CONFIG:Release>:-O2>)
+    target_compile_options(${target} PRIVATE $<$<CONFIG:Debug>:-O0 -g3>)
+    target_compile_options(${target} PRIVATE $<$<CONFIG:Coverage>:-O0 -g3 --coverage>)
+    set_target_properties(${target} PROPERTIES LINK_FLAGS_COVERAGE "--coverage")
+    target_compile_options(${target} PRIVATE $<$<CONFIG:ASan>:-fsanitize=address -fno-common -fsanitize=undefined -fno-sanitize-recover=all -O3>)
+    set_target_properties(${target} PROPERTIES LINK_FLAGS_ASAN "-fsanitize=address -fsanitize=undefined")
+    target_compile_options(${target} PRIVATE $<$<CONFIG:ASanDbg>:-fsanitize=address -fno-common -fsanitize=undefined -fno-sanitize-recover=all -O1 -g3 -fno-omit-frame-pointer -fno-optimize-sibling-calls>)
+    set_target_properties(${target} PROPERTIES LINK_FLAGS_ASANDBG "-fsanitize=address -fsanitize=undefined")
+    target_compile_options(${target} PRIVATE $<$<CONFIG:MemSan>:-fsanitize=memory>)
+    set_target_properties(${target} PROPERTIES LINK_FLAGS_MEMSAN "-fsanitize=memory")
+    target_compile_options(${target} PRIVATE $<$<CONFIG:MemSanDbg>:-fsanitize=memory -O1 -g3 -fno-omit-frame-pointer -fno-optimize-sibling-calls -fsanitize-memory-track-origins=2>)
+    set_target_properties(${target} PROPERTIES LINK_FLAGS_MEMSANDBG "-fsanitize=memory")
+    target_compile_options(${target} PRIVATE $<$<CONFIG:TSan>:-fsanitize=thread -O3>)
+    set_target_properties(${target} PROPERTIES LINK_FLAGS_TSAN "-fsanitize=thread")
+    target_compile_options(${target} PRIVATE $<$<CONFIG:TSanDbg>:-fsanitize=thread -O1 -g3 -fno-omit-frame-pointer -fno-optimize-sibling-calls>)
+    set_target_properties(${target} PROPERTIES LINK_FLAGS_TSANDBG "-fsanitize=thread")
+    target_compile_options(${target} PRIVATE $<$<CONFIG:Check>:-Os>)
+
     if(MBEDTLS_FATAL_WARNINGS)
-        set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -Werror")
+        target_compile_options(${target} PRIVATE -Werror)
     endif(MBEDTLS_FATAL_WARNINGS)
-endif(CMAKE_COMPILER_IS_CLANG)
+endfunction(set_clang_base_compile_options)
 
 if(CMAKE_COMPILER_IS_IAR)
     set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} --warn_about_c_style_casts")