On 03/14, David Bremner wrote: > Apparently some systems (MacOS?) have a system library called libutil > and the name conflict causes problems. Hello, David! For reference, this issue was also discussed in the past at: https://notmuchmail.org/pipermail/notmuch/2015/020728.html Yes, macOS has a system library with that name: === macOS Sierra === $ ls -alF /usr/lib/libutil* -rwxr-xr-x 1 root wheel 77008 Dec 10 03:02 /usr/lib/libutil.dylib* lrwxr-xr-x 1 root wheel 13 Sep 23 11:40 /usr/lib/libutil1.0.dylib@ -> libutil.dylib === NetBSD does too: === NetBSD 6 === $ ls -alF /usr/lib/libutil* -r--r--r-- 1 root wheel 177672 Nov 9 10:58 /usr/lib/libutil.a lrwxr-xr-x 1 root wheel 25 Nov 9 11:05 /usr/lib/libutil.so@ -> ../../lib/libutil.so.7.19 lrwxr-xr-x 1 root wheel 25 Nov 9 11:05 /usr/lib/libutil.so.7@ -> ../../lib/libutil.so.7.19 lrwxr-xr-x 1 root wheel 25 Nov 9 11:05 /usr/lib/libutil.so.7.19@ -> ../../lib/libutil.so.7.19 -r--r--r-- 1 root wheel 184398 Nov 9 10:58 /usr/lib/libutil_p.a -r--r--r-- 1 root wheel 187056 Nov 9 10:58 /usr/lib/libutil_pic.a === I'm almost certain NetBSD 7 and current have it too, and FreeBSD too, but I don't have access to running versions of these to be 100% sure. Here are some source code pointers: * macOS https://opensource.apple.com/release/os-x-1012.html https://opensource.apple.com/source/libutil/libutil-47/ * NetBSD http://cvsweb.netbsd.org/bsdweb.cgi/src/lib/libutil/?only_with_tag=MAIN * FreeBSD https://svnweb.freebsd.org/base/head/lib/libutil/ Regards, Lewis