Path: utzoo!attcan!utgpu!jarvis.csri.toronto.edu!mailrus!tut.cis.ohio-state.edu!ucbvax!hplabs!hpfcdc!mev
From: mev@hpfcdc.HP.COM (Mike Vermeulen)
Newsgroups: comp.sys.hp
Subject: Re: GCC on HPUX - is it possible?
Message-ID: <5570183@hpfcdc.HP.COM>
Date: 15 May 89 15:56:12 GMT
References: <1263@mmm.UUCP>
Organization: HP Ft. Collins, Co.
Lines: 37

> Trying to compile GCC 1.34 on HPUX (Version 6.something) fails in
> toplev.c seemingly because the macro definitions are too long for the
> HPUX compiler.  Does anyone have suggestions? patches? sympathy?

I picked up a copy of gcc 1.34 and tried to make it compile on my hp-ux 6.5
system.  It died with a syntax error in toplev.c.  I narrowed my problem down
to the following:

   1. toplev.c includes /usr/include/sys/param.h which has the following:

	#define FLOAT 		FLOAT_M320
	#define FLOAT_M320 	5

   2. rtl.h includes the following

	#define DEF_RTL_EXPR(ENUM, NAME, FORMAT)   ENUM ,

   3. rtl.def has a long list of uses of DEF_RTL_EXPR including the following
      on line 492:

	DEF_RTL_EXPR(FLOAT, "float", "e")

The combination of these three macros causes the preprocessor to create an
invalid enum declaration:

	enum rtx_code {
	   UNKNOWN,
   	   NIL,
		/*etc*/
	   5,
		/*etc*/
	}

Which the compile complains about.  One simple workaround is to get rid of the
FLOAT name collision by adding #undef FLOAT after the inclusion of
<sys/param.h> in toplev.c.  After doing this my copy of gcc 1.34 compiles
without complaint.