The following diagram shows the gxlc or gxlc++ syntax:
>>-+-gxlc---+--+------+--+-----------------------------+--+----------------------+--filename->< +-gxlc++-+ +- -v--+ '- -Wx,--xlc_or_xlc++_options-' '- -gcc_or_g++_options-' '-gxlC---' '- -vv-'
where:
- filename
- Is the name of the file to be compiled.
- -v
- Verifies the command that is used to invoke XL C/C++. The utility displays the XL C/C++ invocation command that it has created, before using it to invoke the compiler.
- -vv
- Runs a simulation. The utility displays the XL C/C++ invocation command that it has created, but does not invoke the compiler.
- -Wx, xlc_or_xlc++_ options
- Sends the given XL C/C++ options directly to the xlc or xlc++ invocation command. The utility adds the given options to the XL C/C++ invocation it is creating, without attempting to translate them. Use this option with known XL C/C++ options to improve the performance of the utility. Multiple xlc_or_xlc++_options are delimited by a comma.
- -gcc_or_g++_options
- The GNU C/C++ options that are translated to XL C/C++ options. The utility emits a warning for any option it cannot translate. The GNU C/C++ options that are currently recognized by gxlc or gxlc++ are in the configuration file gxlc.cfg. Multiple -gcc_or_g++_options are delimited by the space character.
Examples
To use the GCC -fstrict-aliasing option
to compile the C version of the Hello World program, you can use:
gxlc -fstrict-aliasing hello.cxlc -qalias=ansi hello.c