Cannot Specify -O When Generating Multiple Output Files

clang5.0 error cannot specify o when generating multiple output

Cannot Specify -O When Generating Multiple Output Files. Web do not add header files to the compiler args.

clang5.0 error cannot specify o when generating multiple output
clang5.0 error cannot specify o when generating multiple output

Web do not add header files to the compiler args.

Web do not add header files to the compiler args. Web do not add header files to the compiler args.