Re: Linking PHP with static Libtool libraries

Does this happen with latest CVS? --Jani On Fri, 14 Dec 2001, Adam Dickmeiss wrote: >I have the following problem. On UNIX, PHP fails to link with >a static library generated by Libtool. Problem occurs with PHP 4.1.0 >but not PHP 4.0.6. The YAZ extension, for example, which I maintain >generates by default a static Libtool library only. So After doing > cd yaz-1.8.3 > ./configure --prefix=/usr > make > make install > >two files are created, namely /usr/lib/libyaz.a and /lib/lib/libyaz.la. > >For PHP I do : > ./configure --with-yaz [other options] > >and get the folloing make output: >.. >/bin/sh ../libtool --silent --mode=link gcc -g -O2 -prefer-pic -o libZend.la -ldl -lyaz >-lcrypt -lresolv -lm -ldl -lnsl -lresolv >-lcrypt zend_language_parser.lo zend_language_scanner.lo zend_ini_parser.lo zend_ini_scanner.lo >zend_alloc.lo zend_compile.lo zend_c >onstants.lo zend_dynamic_array.lo zend_execute.lo zend_execute_API.lo zend_highlight.lo >zend_llist.lo zend_opcode.lo zend_operators.l >o zend_ptr_stack.lo zend_stack.lo zend_variables.lo zend.lo zend_API.lo zend_extensions.lo >zend_hash.lo zend_list.lo zend_indent.lo z >end_builtin_functions.lo zend_sprintf.lo zend_ini.lo >make[1]: Leaving directory `/home/adam/proj/php-4.1.0/Zend' >... >/bin/sh /home/adam/proj/php-4.1.0/libtool --silent --mode=link gcc -I. >-I/home/adam/proj/php-4.1.0/ -I/home/adam/proj/php-4.1.0/main > -I/home/adam/proj/php-4.1.0 -I/home/adam/proj/apache/include -I/home/adam/proj/php-4.1.0/Zend > -I/home/adam/proj/php-4.1.0/ext/mysql/ >libmysql -I/home/adam/proj/php-4.1.0/ext/xml/expat -DLINUX=22 -DUSE_HSREGEX -DUSE_EXPAT >-I/home/adam/proj/php-4.1.0/TSRM -g -O2 -pre >fer-pic -o libphp4.la -rpath /home/adam/proj/php-4.1.0/libs -avoid-version stub.lo >Zend/libZend.la sapi/apache/libsapi.la main/l >ibmain.la regex/libregex.la ext/mysql/libmysql.la ext/pcre/libpcre.la ext/posix/libposix.la >ext/session/libsession.la ext/standard/li >bstandard.la ext/xml/libxml.la ext/yaz/libyaz.la TSRM/libtsrm.la -ldl -lyaz -lcrypt -lresolv -lm >-ldl -lnsl -lresolv -lcrypt >/usr/lib/libyaz.a(odr_bool.o): In function `odr_bool': >/home/adam/proj/yaz/odr/odr_bool.c(.text+0x0): multiple definition of `odr_bool' >Zend/.libs/libZend.al(odr_bool.o)(.text+0x0):/home/adam/proj/yaz/odr/odr_bool.c: first defined >here >/usr/lib/libyaz.a(ber_bool.o): In function `ber_boolean': >[many more multiple symbols] > >The log indicates that all YAZ symbols are included twice. Apparenly the >Zend link step includes YAZ verbatim even though NO symbols should be needed >to built that. > >Solutions / work-arounds: > >1) removing /usr/lib/libyaz.la makes it work. Suddenly, the Zend link step > doesn't include YAZ so everything is fine. Libtool bug? > >2) removing the linkage of yaz from the Zend link step obviously makes it > work too. > >3) build shared YAZ objects is a fix too. (./configure --enabled-shared for YAZ). > >The problem doesn't occur with PHP 4.0.6. Probably due to the fact that >it uses libtool 1.3.5. > >The problem currently only exists with YAZ (I guess most other packages >are shared objects ONLY). But it would really be convenient if extensions >could use static libraries as well. > >If this is a libtool bug and there's no easy fix for that, my suggestion would be >that Zend doesn't link with YAZ or other extension libraries. Fix 2) above. > >-- Adam > >