On 2/25/15 1:34 AM, David Bremner wrote: > Unfortunately we did not receive any feedback from Mac users in the > meantime. It would be nice to know that your patch won't break the > existing macports and brew packages. I suppose that those work > because they install the libraries into a well known location. Hi, David. I just tried installing to /usr/local (now on OS X Yosemite 10.10.2), and you're right about that; it appears that because it's a standard location, it works without my patch. Looking at the dyld(1) man page, it says the following for the DYLD_FALLBACK_LIBRARY_PATH environment variable (and I think the fact that /usr/local/lib is in the default list is the reason why it works without the patch): This is a colon separated list of directories that contain libraries. It is used as the default location for libraries not found in their install path. By default, it is set to $(HOME)/lib:/usr/local/lib:/lib:/usr/lib. However, if I install to /opt, it does *not* work without my patch. So, I'm still confident that the patch is correct and needed. The reason it works in Homebrew is twofold. One, assuming Homebrew installs packages to /usr/local, the dynamic linker finds the notmuch library in /usr/local/lib because it's in the default list of locations that the dynamic linker looks for libraries. Two, Homebrew globally corrects all install names in dynamically shared libraries and binaries for all packages. So, even if the package is broken, Homebrew corrects it automatically, and no one ever knows. The reason it works in MacPorts is because they apply a patch that's the same as what I submitted! See: https://trac.macports.org/browser/trunk/dports/mail/notmuch/files/patch-lib-Makefile.local.diff For any OS X notmuch developer willing to test this, here are the five commands to run to reproduce the problem (note: another libnotmuch*.dylib must *not* be in /usr/local/lib where it would be found automatically by the dynamic linker; similarly, no DYLD_* environment variables should be set for this test; obviously, change the CFLAGS and LDFLAGS environment variables in the ./configure command to point to where the libraries are that notmuch needs): === $ git clone git://notmuchmail.org/git/notmuch $ CFLAGS='-I/pkg/include' LDFLAGS='-L/pkg/lib' ./configure --prefix=/opt --without-emacs $ make $ make install $ /opt/bin/notmuch --version === When I run the just-installed notmuch in that last command, it produces the following output: === dyld: Library not loaded: libnotmuch.4.dylib Referenced from: /opt/bin/notmuch Reason: image not found Trace/BPT trap: 5 (core dumped) === Regards, Lewis