can't build psdoom

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hey there

I'm trying to build psdoom from your
psdoom-2000.05.03-src.tar.gz and I'm getting this
error:
In file included from p_pspr.h:34,
from d_player.h:39,
from d_net.h:33,
from doomstat.h:40,
from doomstat.c:35:
m_fixed.h: In function `FixedMul':
m_fixed.h:64: operand constraint contains '+' or '=' at
illegal position.
m_fixed.h: In function `FixedDiv2':
m_fixed.h:79: operand constraint contains '+' or '=' at
illegal position.
make[1]: *** [linux-x86/doomstat.o] Error 1
make[1]: Leaving directory
`/home/timo/psdoom/psdoom-src/xdoomsrc/xdoom'
make: *** [xdoom-linux-x86] Error 2

all I did is cd to xdoomsrc and make linux-x86

I'm using gcc 2.95.2 on a Mandrake 6.0
the CPU is a P2, it's a bit weird I got the -m486
compiling directive (the
errors seems to come from fixed-point code)
I don't have much time to spend on it, so I won't look
into it much .. too
bad cause psdoom could add fun to my everyday process-
killing frenzy.

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I looked at m_fixed.h, and the offending lines both look
like this:
"%edx", "%cc");

Perhaps it's your compiler (I use gcc 2.7). I'm guessing
that your compiler is interpreting the %cc a directive or
alias to do something.

One thing to try: modify Makefile.linux-x86 in the
xdoom/xdoomsrc/xdoom/ directory as follows:

Comment the line:
# Production, old GNU C 2.7
OPTFLAGS=-O3 -m486 -ffast-math -fomit-frame-pointer \ -DUSE_INLINE -DUSE_ASMMOD

Uncomment the line:
# Production, EGCS
#OPTFLAGS=-O3 -mpentium -ffast-math -fomit-frame-pointer \ -fexpensive-optimizations -DUSE_INLINE -DUSE_ASMMOD

Maybe that will help since you're using the newer
compiler, not the old GNU C 2.7. If that doesn't work, you
could also try deleting the -DUSE_INLINE from the above
line. If that stuff doesn't work, well, I'm out of ideas
for now...

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I made it work with the EGCS OPTFLAGS and removing
USE_INLINE
well maybe it's less optimized, but I think my box can
handle it :-)

thanks for the tips

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Actually, I just noticed that the latest version of XDoom
(20001001) has a release note about this in the file:
xdoom/xdoomsrc/doc/Release.notes

<...snip...>
GNU C 2.9 on all x86 platforms:
===============================
With GNU C releases like this:

gcc --version
2.95.2

compilation aborts with the following error:

gcc -O3 -m486 -ffast-math -fomit-frame-pointer -DUSE_INLINE
-DUSE_ASMMOD
-Wall -DNORMALUNIX -DLINUX -DBUGFIXES -DPOLL_POINTER
-DMUSSERV -c
doomstat.c -o linux-x86/doomstat.o
In file included from p_pspr.h:34,
from d_player.h:39,
from d_net.h:33,
from doomstat.h:40,
from doomstat.c:35:
m_fixed.h: In function `FixedMul':
m_fixed.h:64: operand constraint contains '+' or '=' at
illegal position.
m_fixed.h: In function `FixedDiv2':
m_fixed.h:79: operand constraint contains '+' or '=' at
illegal position.
make[1]: *** [linux-x86/doomstat.o] Error 1

In m_fixed.h there aren't any + or = in any operands, this
looks like
some compiler bug, with releases 2.7 and 2.8 of the GNU C
compiler there
is no such problem.
Use the EGCS compiler, which also doesn't have this problem,
or in
Makefile.linux-x86 remove -DUSE_INLINE from the active OPTFLAGS.
C code instead of assembler code for the fixed point
division/multiplication
routines will be compiled then. This is a bit slower, but on
nowadys
systems one won't notice, this optimization is for 386/486
CPU's.

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hilarious
well I submitted this on:
Date: 2000-06-20 21:39

that was two years ago .. I must say I haven't bothered
about this (maybe I did for a day or two)

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I have made the recommended changes to Makefile.linux-x86
and have attached it to this Support Request.

Download the file and replace the existing
xdoomsrc/xdoom/Makefile.linux-x86 with this new one. The
compilation should work then.

Updated Makefile.linux-x86 file.