CMAKE - Fix build types

Addresses issue https://github.com/ROCm/rdc/issues/43

Change-Id: I456184358524a6feef4bf83eecb655678c3bc42d
Signed-off-by: Galantsev, Dmitrii <dmitrii.galantsev@amd.com>


[ROCm/rdc commit: 80ee980cdb]

projects/rdc/example/CMakeLists.txt

@@ -31,14 +31,13 @@ cmake_minimum_required(VERSION 3.15)
 option(CMAKE_VERBOSE_MAKEFILE "Enable verbose output" ON)
 option(CMAKE_EXPORT_COMPILE_COMMANDS "Export compile commands for linters and autocompleters" ON)
 
-# Compiler flags
-set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -Wall -Wextra -m64 -msse -msse2 -pthread")
-
-if("${CMAKE_BUILD_TYPE}" STREQUAL Release)
-    set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -O2")
-else()
-    set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -ggdb -O0 -DDEBUG")
-endif()
+# Set compile flags
+set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -Wall -Wextra -m64 -msse -msse2")
+set(CMAKE_CXX_FLAGS_DEBUG "${CMAKE_CXX_FLAGS_DEBUG} -O0 -ggdb -DDEBUG" CACHE STRING "Flags for Debug builds")
+# note: no '-s' here unlike other CMakeLists.txt
+set(CMAKE_CXX_FLAGS_RELEASE "${CMAKE_CXX_FLAGS_RELEASE} -O2 -DNDEBUG" CACHE STRING "Flags for Release builds")
+set(CMAKE_CXX_FLAGS_RELWITHDEBINFO "${CMAKE_CXX_FLAGS_RELWITHDEBINFO} -O2 -g -DNDEBUG" CACHE STRING "Flags for RelWithDebInfo builds")
+set(CMAKE_CXX_FLAGS_MINSIZEREL "${CMAKE_CXX_FLAGS_MINSIZEREL} -Os -DNDEBUG" CACHE STRING "Flags for MinSizeRel builds")
 
 set(CMAKE_CXX_STANDARD 17 CACHE STRING "The C++ standard to use")
 set(CMAKE_CXX_STANDARD_REQUIRED ON)