build: MP_UNITS_DEV_TIME_TRACE CMake option added

src/core/CMakeLists.txt

@@ -151,3 +151,9 @@ target_compile_definitions(
     mp-units-core ${${projectPrefix}TARGET_SCOPE}
                   ${projectPrefix}HOSTED=$<NOT:$<BOOL:${${projectPrefix}API_FREESTANDING}>>
 )
+
+if(${projectPrefix}DEV_TIME_TRACE STREQUAL "ALL")
+    target_compile_options(mp-units-core ${${projectPrefix}TARGET_SCOPE} "-ftime-trace")
+elseif(${projectPrefix}DEV_TIME_TRACE STREQUAL "MODULES")
+    target_compile_options(mp-units-core PRIVATE "-ftime-trace")
+endif()

src/systems/CMakeLists.txt

@@ -71,3 +71,7 @@ if(NOT ${projectPrefix}API_FREESTANDING)
                include/mp-units/systems/si/chrono.h
     )
 endif()
+
+if(${projectPrefix}DEV_TIME_TRACE STREQUAL "MODULES")
+    target_compile_options(mp-units-systems PRIVATE "-ftime-trace")
+endif()