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Date: Sat, 18 Nov 2000 18:27:46 -0500
To: djgpp-workers AT delorie DOT com
From: "Peter J. Farley III" <pjfarley AT banet DOT net>
Subject: Re: Help: Isn't libdbg the debugging version of libc?
Cc: Richard Dawe <richdawe AT bigfoot DOT com>
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At 07:35 PM 11/17/00 +0000, Richard Dawe wrote:
<Snipped>
 >This is not very pretty, but I could not find any way of making the
 >code compiled without any warnings/errors with binutils 2.8.1 and
 >2.95.2 from the same sources.
 >
 >I'm not suggesting this be incorporated into the DJGPP build, since 
it
 >would add a dependency on sed, but it's a solution nonetheless.

Per Eli's suggestion, I have figured out how to use GNU make's builtin 
functions to extract the GAS version information.  Here is a sample 
makefile demonstrating the technique:

---------Start makefile-----------------------------
AS := $(DJDIR)/bin/as
GAS_VERSION    := $(subst ., ,$(shell $(AS) --version))
GAS_MAJOR      := $(word 3,$(GAS_VERSION))
GAS_MINOR      := $(word 4,$(GAS_VERSION))
GAS_MINORMINOR := $(word 5,$(GAS_VERSION))

# Defaults for version numbers
ifeq ($(GAS_MAJOR),)
GAS_MAJOR := 0
endif
ifeq ($(GAS_MINOR),)
GAS_MINOR := 0
endif
ifeq ($(GAS_MINORMINOR),)
GAS_MINORMINOR := 0
endif

# Pass defines as compiler switches
CFLAGS += -DGAS_MAJOR=$(GAS_MAJOR)
CFLAGS += -DGAS_MINOR=$(GAS_MINOR)
CFLAGS += -DGAS_MINORMINOR=$(GAS_MINORMINOR)

all:
	@echo GAS_MAJOR      = $(GAS_MAJOR)
	@echo GAS_MINOR      = $(GAS_MINOR)
	@echo GAS_MINORMINOR = $(GAS_MINORMINOR)
	@echo CFLAGS         = $(CFLAGS)
---------End makefile-----------------------------

And here is a sample output for gcc 2.9.5 (also tested with gcc 2.8.1, 
works there also):

O:\src>make
GAS_MAJOR = 2
GAS_MINOR = 9
GAS_MINORMINOR = 5
CFLAGS = -DGAS_MAJOR=2 -DGAS_MINOR=9 -DGAS_MINORMINOR=5

Patches for "makefile.inc", "exceptn.S" and "dbgcom.c" to make and use 
these defines will follow, as soon as I get them working.

HTH.
---------------------------------------------------------
Peter J. Farley III (pjfarley AT dorsai DOT org OR
                      pjfarley AT banet DOT net)