Hi Michael, On 01/19/2016 09:44 PM, Michael Felt wrote: > L.S., > > If I understand the documentation correctly libtool places non-shareable > members (.o files) in the src directory > and "shareable aka PIC objects in src/.libs". However, libtool makes only one > size of objects - either 32-bit or 64-bit. > > As "aixtools" I am trying to package (common) opensource projects - and > mainly I have done so as as 32-bit only and was not bothered by the lack > of 64-bit build issues. Recently there are packages that may only work well > in 64-bit mode (e.g., R language) and I have started to package > in 64-bit as well. > > As part of my research I see that Linux distros seem to use > .../lib/libsomething* and .../lib64/libsomething* for 32 and 64-bit > (respectively) library > packaging. The AIX convention - as you may, or may not know, is not to have > multiple .so files in two directories but to have one .../lib/libsomething.a > with multiple members as static and/or shareable objects. The same object > name may be used multiple times, although the legacy convention is to > use shr.o as a shared object of multiple .o members and shr64.o for the same > .o files - but compiled in 64-bit mode). > > I am wondering - and willing to work on - with assistence - an addition to > the .lo target such that both 32 and 64 bit (shared) objects are made > for inclusion in a single .a archive - to be compareable with a library as it > would be released by IBM AIX developers/labs.
IMO, there is no point in having multilib support within libtool for AIX only. If ever, multilib support inside libtool should be implemented in some generic way - to allow for porting to Linux and others eventually. Instead, for the time being even on AIX, it is up to the package manager to separately compile the package in 32-bit and 64-bit mode, and then merge the members of both the 32-bit Archive Library and the 64-bit Archive Library into one single Archive Library. Agreed this is a little tricky, but possible. However, this works as long as you have libtool to create Archive Libraries at all - which is the default when LDFLAGS does not contain "-brtl". My 2 cents, /haubi/ PS: Probably worth a note: Since libtool-2.4.4 there is the "--with-aix-soname" configure option for optional filename-based shared library versioning on AIX, which is designed to work with above multilib merging strategy as well. _______________________________________________ https://lists.gnu.org/mailman/listinfo/libtool
