Hello again, some updates regarding the '# autoload' property in general, as well as in combination with both 32 and 64 bit shared objects in one archive:
On 01/21/11 15:19, Michael Haubenwallner wrote: > *) Create the Import File "shr.imp", containing > - this header: > #! libNAME.so.1(shr.o) > # autoload > #! libNAME.so.1(shr.o) > - the list of symbols exported. > *) '# autoload' keeps a reference to the shared object in the > target binary even when not referenced by some static object. The problem here is that there is no way to tell the '# autoload' to fire in either 32 _or_ 64 bit mode only. So when using '# autoload', both 32 and 64 bit shared objects must have the _same_ member name, e.g. "(shr.o)". When not using '# autoload' (or even independent of that), an additional line indicating the bitness of the exported symbols would make sense - either '# 32' or '# 64', to load the correct archive member when needed. I tend to omit the '# autoload' (and the subsequent '#!') line, as this is how it works with traditional shared libraries anyway: > Unfortunately, another shared object having undefined symbols provided > by this shared object does not trigger the latter to be referenced. Additionally, the ld manpage for AIX [1] says for undefined symbols, in section 'Import and Export File Format' [2]: "The main program must export symbols imported by other modules, or loading will fail." [1] http://publib.boulder.ibm.com/infocenter/aix/v6r1/topic/com.ibm.aix.cmds/doc/aixcmds3/ld.htm [2] http://publib.boulder.ibm.com/infocenter/aix/v6r1/topic/com.ibm.aix.cmds/doc/aixcmds3/ld.htm#a3119106d /haubi/ _______________________________________________ http://lists.gnu.org/mailman/listinfo/libtool
