Xref: news2.mv.net comp.os.msdos.djgpp:6709
Newsgroups: comp.os.msdos.djgpp
From: hk AT bercos DOT de (Helge Kruse)
Subject: Re: Target-Dependent DEFINES ??
Sender: usenet AT bercos DOT de
Organization: Bercos GmbH
Message-ID: <DvGxyB.ALF@bercos.de>
References: <4tprvs$l5v$1 AT mhade DOT production DOT compuserve DOT com>
Date: Thu, 1 Aug 1996 23:10:05 GMT
Lines: 34
To: djgpp AT delorie DOT com
DJ-Gateway: from newsgroup comp.os.msdos.djgpp

Steven M. Gibson <76711 DOT 2621 AT CompuServe DOT COM> wrote:
>All:
>
>Does GCC have any target-dependent DEFINES?  I'd like to assemble
>slightly different code under GCC/Unix than under GCC/PC ... and
>I'd like to not have to REMEMBER to set my own DEFINE to do so.
You can set target definition in two ways:
use the -A switch:
	#if #cpu(i386)
		char *cpu="intel 386";
	#else
		char *cpu="other";
	#endif
c:\> gcc -Acpu(i386) xx.c

But you didn't want to specify your own define: Just use the -v switch:

C:\TMP>gcc -v a.c
Reading specs from c:/djgpp/lib\specs
gcc version 2.7.2
 c:/djgpp/bin\cpp.exe -lang-c -v -undef -D__GNUC__=2 -D__GNUC_MINOR__=7
 -Dunix -Di386 -DGO32 -DMSDOS -DDJGPP=2 -DDJGPP_MINOR=0 -D__unix__ -D__i386__
 -D__GO32__ -D__MSDOS__ -D__DJGPP__=2 -D__DJGPP_MINOR__=0 -D__unix -D__i386
 -D__GO32 -D__MSDOS -D__DJGPP=2 -D__DJGPP_MINOR=0 a.c c:/djgpp/tmp\ccbaaaaa
GNU CPP version 2.7.2 (80386, BSD syntax)
#include "..." search starts here:
#include <...> search starts here:
 c:/djgpp/include
 c:/djgpp/contrib/grx20/include
C:\TMP>

I think, you can find as many target defines as you need.

Helge