ports/181774: USE_BDB 47+ fails to find installed databases/db47

[Henry Jalonen]

>Number:         181774
>Category:       ports
>Synopsis:       USE_BDB 47+ fails to find installed databases/db47
>Confidential:   no
>Severity:       non-critical
>Priority:       low
>Responsible:    freebsd-ports-bugs
>State:          open
>Quarter:        
>Keywords:       
>Date-Required:
>Class:          sw-bug
>Submitter-Id:   current-users
>Arrival-Date:   Tue Sep 03 10:10:00 UTC 2013
>Closed-Date:
>Last-Modified:
>Originator:     Henry Jalonen
>Release:        9.1-RELEASE-p5
>Organization:
>Environment:
FreeBSD 9.1-RELEASE-p5 FreeBSD 9.1-RELEASE-p5 #1: Wed Aug  7 14:57:19 EEST 2013     root@:/usr/obj/usr/src/sys/FLAME  sparc64
>Description:
I was updating my ports as usual:

===>>> All >> p5-BerkeleyDB-0.52 (14/32)
===>  Cleaning for p5-BerkeleyDB-0.53
===>  License ART10 GPLv1 accepted by the user
===> Fetching all distfiles required by p5-BerkeleyDB-0.53 for building
===>  Extracting for p5-BerkeleyDB-0.53
=> SHA256 Checksum OK for BerkeleyDB-0.53.tar.gz.
===>  Patching for p5-BerkeleyDB-0.53
===>   p5-BerkeleyDB-0.53 depends on file: /usr/local/bin/perl5.14.4 - found
===>   p5-BerkeleyDB-0.53 depends on shared library: libdb-4.7.so - not found
===>    Verifying for libdb-4.7.so in /usr/ports/databases/db47

Wait... I do have databases/db47 installed! So what's going on?

bsd.port.mk library detection:

[ `file -b -L --mime-type $${libdir}/$${lib}` = "application/x-sharedlib" ]

I tried running it:

$ /usr/bin/file -L -b --mime-type /usr/local/lib/libdb-4.7.so
inode/symlink

Ok...

$ /usr/bin/file -L -b /usr/local/lib/libdb-4.7.so
ELF 64-bit MSB shared object, SPARC V9, relaxed memory ordering, version 1 (FreeBSD), dynamically linked, not stripped

It seems the symbolic link does not dereference correctly when using --mime-type.
>How-To-Repeat:
Update any package using USE_BDB = 47+ - in my case databases/p5-BerkeleyDB
>Fix:
Either fix bsd.port.mk to correctly detect the installed library or fix /usr/bin/file to correctly dereference the symlink.

>Release-Note:
>Audit-Trail:
>Unformatted: