[ThinLisp-develop] Re: Autoconf Work

[Jim A. <ja...@al...>]

I gave it a try.  During the C link it couldn't find the symbols floor, 
ceil, fmod, pow, and log10.  So, I presume that we need to tell autoconf 
that we want the floating point functions so it includes the math 
library.  Hopefully you've got the information about how to do that in your 
hip pocket.

I noticed that even when you give the "OPT=1" argument to make, the 
autoconf makefile includes "-g" in the CFLAGS.  While I know that some 
people insist that a debuggable optimized compile is OK in gcc, I've found 
some performance and size penalties that seemed troubling.  Also, gdb lies 
about source code locations in optimized debuggable code, since code motion 
done in optimization makes the source line locations somewhat 
meaningless.  I guess I've just not found that there's a reasonable 
compromise implemented in the combination of debuggable and optimized, so 
I've generally avoided the attempt to mix them.  I don't know if this is 
configurable in autoconf.

I've been reconsidering the whole C build directory structure, and changing 
that during a move towards autoconf might be reasonable.  The idea of build 
directories that are parallel to the C directories instead of 
subdirectories of C is kind of strange in retrospect.

The port that still is lacking testing is the makefile support for NMAKE in 
Windows.  I don't know if autoconf can help there.

Anyhow, it's a nice start on autoconf.

Jim

P.S.  Sorry it took so long to turn around testing results on this.  Sleep 
is overrated. :-)


At 12:28 AM 1/2/2002 -0500, Ben Hyde wrote:

>Ben Hyde wrote:
>  > Log Message:
>  > Autoconf style makefiles work on at least mac os x, and probably most
>  > other things too.
>
>Well that's a fib.  If these were done right the
>configure.in file (i.e. the thing that autoconf
>reads to generate that fine ./configure script)
>would be rolled up from knowledge gleaned from the
>declare-system forms.  Instead I just generate
>a default configure.in file that happens to work
>with the makefile.in that is generated for the
>pseudo port-name "autoconf".
>
>This is close enought that it is tempting to
>eliminate all the makefile-<port-name> makefiles,
>but that would require getting the opt/bin etc.
>stuff figured out.
>
>For the time being to use this you do:
>
>   cd lecho/c
>   autoconf
>   ./configure
>   cd ../opt
>   make -f ../makefile
>
>that should work on most platforms, maybe...
>
>I'm going to bed.
>
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/--------------------------------------------------------------\
Jim Allard, Newton, MA                      ja...@al...