Our sources are readily and freely available via git and weekly snapshots. Warnings from system headers are normally suppressed, on the assumption that they usually do not indicate real problems and would only make the compiler output harder to read Gcc cobol manual page (also in pdf) and gcc cobol i/o api manual page (also in pdf) gnu offloading and multi processing runtime library manual (also in pdf or postscript or an html tarball)
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Compilation can involve up to four stages
Preprocessing, compilation proper, assembly and linking, always in that order.
Now that gcc is configured, you are ready to build the compiler and runtime libraries Some commands executed when making the compiler may fail (return a nonzero status) and be ignored by make These failures, which are often due to files that were not found, are expected, and can safely be ignored. The compiler performs optimization based on the knowledge it has of the program
Compiling multiple files at once to a single output file mode allows the compiler to use information gained from all of the files when compiling each of them Not all optimizations are controlled directly by a flag. Gcc includes several components that previously were separate distributions with their own installation instructions Before starting the build/install procedure please check the host/target specific installation notes.
Options controlling the kind of output, up
Gcc command options [contents] [index]
