For the VPATH builds done in Userland, tmux fails to find an awk script used
to prepare the man page. This patch was submitted to the maintainer on
2014-09-16, he said he has already fixed this problem in the development version.
--- ORIGINAL/Makefile.in 2014-02-20 15:11:49.000000000 -0800
+++ tmux-1.9/Makefile.in 2014-11-20 11:28:36.648421671 -0800
@@ -1221,7 +1221,7 @@
>$(srcdir)/tmux.1.mdoc; \
else \
sed -e "s|@SYSCONFDIR@|$(sysconfdir)|g" $(srcdir)/tmux.1| \
- $(AWK) -fmdoc2man.awk >$(srcdir)/tmux.1.man; \
+ $(AWK) -f$(srcdir)/mdoc2man.awk >$(srcdir)/tmux.1.man; \
fi
$(MKDIR_P) $(DESTDIR)$(mandir)/man1
$(INSTALL_DATA) $(srcdir)/tmux.1.@MANFORMAT@ \