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Bug #23758 Must link -lgcc_s rather than -lgcc
Submitted: 2003-05-22 12:04 UTC Modified: 2004-03-08 21:24 UTC
Votes:3
Avg. Score:5.0 ± 0.0
Reproduced:3 of 3 (100.0%)
Same Version:3 (100.0%)
Same OS:3 (100.0%)
From: pbriggs at clinitech dot net Assigned:
Status: Not a bug Package: Compile Failure
PHP Version: 4CVS, 5CVS OS: HPUX 11.00
Private report: No CVE-ID: None
View Developer Edit
 [2003-05-22 12:04 UTC] pbriggs at clinitech dot net 
PHP-4.3.2RC4 on HP-UX 11.00

./configure --prefix=/opt/php --with apxs2=/opt/apache/bin/apxs --with-mysql=/opt/mysql4 -enable libgcc --enable-sockets

In order to avoid "unresolved symbol: __umoddi3" error when attempting to start Apache 2 with PHP as a module, I must use the configure option --enable-libgcc.  Because -lgcc is not a shared library, PHP does not compile a shared object that Apache can use as a module.  A static libphp4.a object is created in .libs directory.

What I have done is rerun the linker step manually by copying and pasting the long linker command on my telnet terminal.  I then substitute -lgcc with -lgcc_s and that make libtool happy which then creates the correct shared object libphp4.sl in .libs which Apache can then load as a module.

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 [2003-05-22 17:02 UTC] sniper@php.net 
Did you try without --enable-libgcc ??
What gcc version are you using? Did you have some older
version installed before you installed the new one?
 [2003-05-22 17:37 UTC] pbriggs at clinitech dot net 
The version of GCC is 3.3.  I have had previous versions of PHP installed, but in each case, I had to link libgcc_s.1 when its being used as an Apache module.

I just attempted to leave out --enable-libgcc, and what I get is this error from Apache 2.0.45:

Cannot load /opt/apache/modules/libphp4.so into server: Unresolved external: __umoddi3

The function its looking for is apparently in libgcc, so I have to compile with --enable-libgcc to take care of the problem.  This appears to be documented in bugs 16808, 15189, 12222, 12232.

Using --enable-libgcc fixes the issue, but in the case of an Apache as a module, it needs to be the shared version lgcc_s to avoid libtool creating a static, rather than shared object for Apache.

The only thing I haven't tried is maybe making a symbolic link of libgcc.sl -> libgcc_s.1, but I'm not sure if that is really the best solution.
 [2003-05-22 18:07 UTC] sniper@php.net 
Try this:

CFLAGS=-shared-libgcc ./configure --disable-cli ..plus your options..

(and leave the --enable-libgcc part out)
 [2003-05-22 18:45 UTC] pbriggs at clinitech dot net 
Ok, tried as you suggested.  Same error.
 [2004-01-27 17:20 UTC] pbriggs at clinitech dot net 
Same issue exists in version 4.3.5RC1.  This time I did ./configure process, edited the Makefile and changed -lgcc to -lgcc_s.  That produced the corrected module that I could load into Apache2.
 [2004-03-08 21:11 UTC] pbriggs at clinitech dot net 
If I use the GCC 3.3.2 binary provided by the HP Software and Porting Archive at http://hpux.cs.utah.edu/ they don't include a libgcc_s.sl, so when I compiled PHP, I didn't specify the -enable-libgcc on the ./configure command.  

Everything compiled and install fine without needing lgcc_s.  I'm not sure how their binary differs from mine when I compiled GCC myself.
 [2004-03-08 21:24 UTC] iliaa@php.net 
Sorry, but your problem does not imply a bug in PHP itself.  For a
list of more appropriate places to ask for help using PHP, please
visit http://www.php.net/support.php as this bug system is not the
appropriate forum for asking support questions. 

Thank you for your interest in PHP.

Does not appear like a PHP bug.
 
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