fmt-lib giving issues on macos, so switching to header-only

Author: wkjarosz

CMakeLists.txt

@@ -340,13 +340,15 @@ hello_imgui_add_app(
 )
 
 set_target_properties(SamplinSafari PROPERTIES OUTPUT_NAME ${output_name} CXX_STANDARD 17)
-target_link_libraries(SamplinSafari PRIVATE samplerlib linalg fmt::fmt portable-file-dialogs emscripten-browser-file)
 if(EMSCRIPTEN)
+  target_link_libraries(SamplinSafari PRIVATE samplerlib linalg fmt::fmt emscripten-browser-file)
   target_link_options(
     SamplinSafari PRIVATE -sEXPORTED_RUNTIME_METHODS=[ccall] -sEXPORTED_FUNCTIONS=[_main,_malloc,_free]
     -sNO_DISABLE_EXCEPTION_CATCHING
   )
   hello_imgui_set_emscripten_target_initial_memory_megabytes(SamplinSafari 120)
+else()
+  target_link_libraries(SamplinSafari PRIVATE samplerlib linalg fmt::fmt-header-only portable-file-dialogs)
 endif()
 
 if(UNIX AND NOT ${U_CMAKE_BUILD_TYPE} MATCHES DEBUG)