This patch makes the build system pass -Wl,-rpath=$out/lib even for
libraries (it already does so for executables, thanks to 'DO_GNU_APP'
in 'Makefile.shared'.)

--- openssl-1.0.2a/Makefile.shared	2015-04-05 01:07:35.357602454 +0200
+++ openssl-1.0.2a/Makefile.shared	2015-04-05 01:09:50.474513303 +0200
@@ -106,7 +106,7 @@ LINK_SO=	\
     LIBPATH=`for x in $$LIBDEPS; do echo $$x; done | sed -e 's/^ *-L//;t' -e d | uniq`; \
     LIBPATH=`echo $$LIBPATH | sed -e 's/ /:/g'`; \
     LD_LIBRARY_PATH=$$LIBPATH:$$LD_LIBRARY_PATH \
-    $${SHAREDCMD} $${SHAREDFLAGS} \
+    $${SHAREDCMD} $${SHAREDFLAGS} -Wl,-rpath,$(LIBRPATH) \
 	-o $$SHLIB$$SHLIB_SOVER$$SHLIB_SUFFIX \
 	$$ALLSYMSFLAGS $$SHOBJECTS $$NOALLSYMSFLAGS $$LIBDEPS \
   ) && $(SYMLINK_SO)
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<div class='path'>path: <a href='/guix/log/?id=c4133c43c7cfe2476ebfae87f9e4d10d96de9bc7'>root</a>/<a href='/guix/log/gnu?id=c4133c43c7cfe2476ebfae87f9e4d10d96de9bc7'>gnu</a>/<a href='/guix/log/gnu/services?id=c4133c43c7cfe2476ebfae87f9e4d10d96de9bc7'>services</a>/<a href='/guix/log/gnu/services/version-control.scm?id=c4133c43c7cfe2476ebfae87f9e4d10d96de9bc7'>version-control.scm</a></div><div class='content'><table class='list nowrap'><tr class='nohover'><th class='left'>Age</th><th class='left'>Commit message (<a href='/guix/log/gnu/services/version-control.scm?id=c4133c43c7cfe2476ebfae87f9e4d10d96de9bc7&amp;showmsg=1'>Expand</a>)</th><th class='left'>Author</th></tr>
<tr><td><span title='2021-04-10 14:11:26 +0200'>2021-04-10</span></td><td><a href='/guix/commit/gnu/services/version-control.scm?id=d2f2c09d273a25e99437305537f254a048281464'>services: git-daemon: Fix typo in docstring.</a><span class='msg-avail'>...</span></td><td>Tobias Geerinckx-Rice</td></tr>
<tr><td><span title='2020-10-05 19:41:23 +0200'>2020-10-05</span></td><td><a href='/guix/commit/gnu/services/version-control.scm?id=4e3ed9bad9ed5758cdee6e636805f65e9ab710eb'>services: gitolite: Install the rc file as gitolite's user.</a><span class='msg-avail'>...</span></td><td>Julien Lepiller</td></tr>
<tr><td><span title='2020-05-13 09:30:26 +0300'>2020-05-13</span></td><td><a href='/guix/commit/gnu/services/version-control.scm?id=3c986a7dc268756c097212de958f046b29b76c1b'>mailmap: Update entries for Nikita.</a><span class='msg-avail'>...</span></td><td>nikita</td></tr>
stem-test-runner'.</a><span class='msg-avail'>...</span></td><td>Ludovic Courtès</td></tr>
<tr><td><span title='2021-09-25 18:52:05 +0200'>2021-09-25</span></td><td><a href='/guix/commit/gnu/tests/rsync.scm?id=1fb75128a5202b406622da6272bc809c46d1f439'>tests: Adjust to SRFI-64 as found in Guile 3.0.7.</a><span class='msg-avail'>...</span></td><td>Ludovic Courtès</td></tr>