-save-temps
Store the usual "temporary" intermediate files permanently; place them in the current directory and
name them based on the source file. Thus, compiling foo.c with -c -save-temps would produce files
foo.i and foo.s, as well as foo.o. This creates a preprocessed foo.i output file even though the
compiler now normally uses an integrated preprocessor.
When used in combination with the -x command line option, -save-temps is sensible enough to avoid
over writing an input source file with the same extension as an intermediate file. The corresponding
intermediate file may be obtained by renaming the source file before using -save-temps.
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-o file
Place output in file file. This applies regardless to whatever sort of output is being produced,
whether it be an executable file, an object file, an assembler file or preprocessed C code.
If -o is not specified, the default is to put an executable file in a.out, the object file for
source.suffix in source.o, its assembler file in source.s, a precompiled header file in
source.suffix.gch, and all preprocessed C source on standard output.
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