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From: Raeburn@MIT.EDU (Ken Raeburn)
Newsgroups: gnu.gcc.bug
Subject: decstation-3100 CPP_{PREDEFINES,SPEC}
Message-ID: <8910171831.AA17209@PROMETHEUS.MIT.EDU>
Date: 17 Oct 89 18:31:24 GMT
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Distribution: gnu
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According to the Ultrix man page for "cc":

     The cc command always defines the C preprocessor macro
     LANGUAGE_C when a .c file is being compiled.  The cc command
     defines the C preprocessor macro LANGUAGE_ASSEMBLY when a .s
     file is compiled.

I don't know offhand how to fit LANGUAGE_ASSEMBLY into it, though it
strikes me as being useful for header files.

Also, it is supposed to define unix, bsd4_2, ultrix, mips, MIPSEL, and
host_mips; gcc appears to be missing bsd4_2 and host_mips.  (I don't
know whether these are specific to the DECstation, or common to all
MIPS cpus.)