Comment author: administrator

This is a strange problem i got with the debian package.

==============================
aurora:~$ ocamlopt str.cmxa stuff.ml
/usr/lib/ocaml/libasmrun.a(str.o)(.text+0x1de): In function is_printable': : undefined reference to __ctype_b'
collect2: ld returned 1 exit status
Error during linking
[...]
Well, it is solved by just rebuilding the package, so that is what i
will do. I guess it may be linked with the fact that we changed libc or
something like that between the time the ocaml package was built and the
time it was used.

Looks like a libc change, indeed. On my Linux system, the libc header
<ctype.h> defines isprint(c) as a macro that expands to something
involving the global variable __ctype_b. Perhaps other versions of
libc expand isprint differently and do not define __ctype_b.

• Xavier Leroy

Comment author: administrator

Looks like a libc change.

Comment author: administrator

On Tue, Oct 29, 2002 at 02:58:01PM +0100, Xavier Leroy wrote:

This is a strange problem i got with the debian package.

==============================
aurora:~$ ocamlopt str.cmxa stuff.ml
/usr/lib/ocaml/libasmrun.a(str.o)(.text+0x1de): In function is_printable': : undefined reference to __ctype_b'
collect2: ld returned 1 exit status
Error during linking
[...]
Well, it is solved by just rebuilding the package, so that is what i
will do. I guess it may be linked with the fact that we changed libc or
something like that between the time the ocaml package was built and the
time it was used.

Looks like a libc change, indeed. On my Linux system, the libc header
<ctype.h> defines isprint(c) as a macro that expands to something
involving the global variable __ctype_b. Perhaps other versions of
libc expand isprint differently and do not define __ctype_b.

Well, after a bit more looking, it happened when glibc 2.3.1 was
installed, while we built ocaml with glibc 2.2.5.

So, i rebuilt ocaml, and the dependency is now libc6 (>= 2.3.1-1), so
this is fixed.

BTW, i noticed this already some time ago, but it didn't find a way to
send a follow-up on a bug report trough the ocaml/bug web pages.

BTW2, do you have any idea about the not-dying thread issue i reported
in another bug report ? It is the last open bug against the ocaml debian
packages.

BTW3, i plan to move the ocaml libdir from /usr/lib/ocaml to
/usr/lib/ocaml/. What would be your opinion on this issues.

Friendly,

Sven Luther