Hi all, I've come up against an awkward situation using libtool, and I wonder if I could ask for some advice on what I'm probably doing wrong here.
I'm developing two different C libraries; lets just call them A and B. A is fairly standalone, and B depends on A. Using libtool, I can develop on A fine. In particular, it has some internal unit-tests which I run using `libtool --mode=exec`. These run OK. Using libtool, I can develop on B just fine, provided the A library is installed as a real system package. The linker can find it by the normal mechanisms and it lives in /usr/lib along with other system things. All is good. Library B also has some unit-tests that are executed with `libtool --mode=exec`. So far so good. But now suppose I have a possible change I want to make that needs edits in both libraries. I don't want to build a new system package yet and upset all the other users on this box. That's fine, I can just install library A into my $HOME directory using $ make install PREFIX=$HOME In order to be able to test programs that use library A, I'm going to need to set LD_LIBRARY_PATH now so they can find the library here in preference to the system-installed one, so in my .profile I use export LD_LIBRARY_PATH=$HOME/lib But now, that upsets every use of `libtool --exec` to run any of the unit tests for my libraries in their source code (for both libraries A and B). With LD_LIBRARY_PATH set in the environment, the libtool wrapper script no longer sets it up at all, meaning that `libtool --exec` on a unit test just sees the system-packaged versions of each library. This means I can't test the new code I just write in library A, because the unit-test executables don't see it. I could make unit tests for library A itself run fine by entirely defeating the LD_LIBRARY_PATH mechanism again, if I $ LD_LIBRARY_PATH= make test But what of library B? It has to be able to see its own locally-build library in $CWD/.libs *and* library A in $HOME/lib. So I could $ LD_LIBRARY_PATH=`pwd`/.libs:$LD_LIBRARY_PATH make test But at that point I really feel like I am fighting against libtool, rather than it helping me do this right. So, what am I doing wrong here? Alternatively, am I using this entire setup in its intended way, but libtool just isn't playing ball with me? (this question also posted at http://leonerds-code.blogspot.co.uk/2017/11/developing-against-homelib-libraries.html ) -- Paul "LeoNerd" Evans leon...@leonerd.org.uk | https://metacpan.org/author/PEVANS http://www.leonerd.org.uk/ | https://www.tindie.com/stores/leonerd/
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