Re: [clisp-list] libsigsegv not detected

[Tomas Z. <zel...@gm...>]

I think this may be issue discussed as 1) in
http://article.gmane.org/gmane.lisp.clisp.general/11079/

If I recall correctly, the problem is that if you have gcc4, you
should use libsigsegv 2.3 or newer - there was a test in older
versions that gcc4 optimizes away. Is it your case?

>From post referenced (by Hoehle, Joerg-Cyril)
---
1) gcc4 causes libsigsegv to misconfigure and not provide stack
overflow detection.  This can be seen in the
include file sigsegv.h. If it does not say
#if 1
# define HAVE_STACK_OVERFLOW_RECOVERY 1
and your Linux is new enough and gcc4 was used to compile it, it's
misconfigured.
---

On 6/28/06, Joe Corneli <jco...@pl...> wrote:
> Am I doing something idiotic?
>
> When I try to run ./configure... in order to build clisp-2.38
> on my Mac OS X 10.3.9 box, I get an error with instructions:
>
> ./configure: libsigsegv was not detected, thus some features, such as
>  generational garbage collection and
>  stack overflow detection in interpreted Lisp code
> cannot be provided.
> Please do this:
>  mkdir tools; cd tools; prefix=`pwd`/powerpc-apple-darwin7.9.0
>  wget http://ftp.gnu.org/pub/gnu/libsigsegv/libsigsegv-2.2.tar.gz
>  tar xfz libsigsegv-2.2.tar.gz
>  cd libsigsegv-2.2
>  ./configure --prefix=${prefix} && make && make check && make install
>  cd ../..
>  ./configure --with-libsigsegv-prefix=${prefix} --with-libreadline-prefix=/sw --with-libsigsegv-prefix=/Users/jcorneli/clisp-2.38/tools/powerpc-apple-darwin7.9.0
> If you insist on building without libsigsegv, please pass
>  --ignore-absence-of-libsigsegv
> to this script:
>  ./configure --ignore-absence-of-libsigsegv --with-libreadline-prefix=/sw --with-libsigsegv-prefix=/Users/jcorneli/clisp-2.38/tools/powerpc-apple-darwin7.9.0
>
> However, here is how I am running ./configure:
>
> ./configure --with-libreadline-prefix=/sw --with-libsigsegv-prefix=/Users/jcorneli/clisp-2.38/tools/powerpc-apple-darwin7.9.0
>
> And if I look in the directory that is supposed to contain libsigsegv,
> I seem to find the right thing.  Why isn't configure finding it, too?
>
> cd /Users/jcorneli/clisp-2.38/tools/powerpc-apple-darwin7.9.0  && find ./
> ./
> ./include
> ./include/sigsegv.h
> ./lib
> ./lib/libsigsegv.a
> ./lib/libsigsegv.la
>
>
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