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/GCC 7

3.18.47 Options for System V

These additional options are available on System V Release 4 for compatibility with other compilers on those systems:

-G

Create a shared object. It is recommended that -symbolic or -shared be used instead.

-Qy

Identify the versions of each tool used by the compiler, in a .ident assembler directive in the output.

-Qn

Refrain from adding .ident directives to the output file (this is the default).

-YP,dirs

Search the directories dirs, and no others, for libraries specified with -l.

-Ym,dir

Look in the directory dir to find the M4 preprocessor. The assembler uses this option.

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Licensed under the GNU Free Documentation License, Version 1.3.
https://gcc.gnu.org/onlinedocs/gcc-7.1.0/gcc/System-V-Options.html