Taken from the Debian package.

From 7be4a19b76d98260cf95040a47935f854a4ba7a4 Mon Sep 17 00:00:00 2001
From: Valentin Rusu <kde@rusu.info>
Date: Sat, 17 Dec 2011 13:47:58 +0100
Subject: [PATCH] Fix .pc file by adding clucene-shared library

---
 src/core/libclucene-core.pc.cmake |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

--- a/src/core/libclucene-core.pc.cmake
+++ b/src/core/libclucene-core.pc.cmake
@@ -6,6 +6,6 @@ includedir=${prefix}/include:${prefix}/i
 Name: libclucene
 Description: CLucene - a C++ search engine, ported from the popular Apache Lucene
 Version: @CLUCENE_VERSION_MAJOR@.@CLUCENE_VERSION_MINOR@.@CLUCENE_VERSION_REVISION@.@CLUCENE_VERSION_PATCH@
-Libs: -L${prefix}/@LIB_DESTINATION@/ -lclucene-core
+Libs: -L${prefix}/@LIB_DESTINATION@/ -lclucene-core -lclucene-shared
 Cflags: -I${prefix}/include -I${prefix}/include/CLucene/ext
 ~
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<tr><td><span title='2019-04-26 00:54:00 +0200'>2019-04-26</span></td><td><a href='/guix/commit/gnu/packages/tmux.scm?id=88507036f603ac1a65bf622e505d45d17f77f9f0'>gnu: tmux-xpanes: Update to 4.1.0.</a><span class='msg-avail'>...</span></td><td>Tobias Geerinckx-Rice</td></tr>
<tr><td><span title='2019-04-25 13:57:09 -0400'>2019-04-25</span></td><td><a href='/guix/commit/gnu/packages/tmux.scm?id=ca3cf2d58ec3aef566fd0cf9d467df501cab9802'>gnu: tmux: Update to 2.9.</a><span class='msg-avail'>...</span></td><td>Leo Famulari</td></tr>
<tr><td><span title='2019-03-12 22:41:31 +0300'>2019-03-12</span></td><td><a href='/guix/commit/gnu/packages/tmux.scm?id=e80a809f1fca1bc8580a9ab24fc071b822f65e7e'>gnu: Add tmux-xpanes.</a><span class='msg-avail'>...</span></td><td>Oleg Pykhalov</td></tr>
<tr><td><span title='2019-02-14 18:16:07 +0100'>2019-02-14</span></td><td><a href='/guix/commit/gnu/packages/tmux.scm?id=66377fdced522d2798ce6846f1b035a7f20ab574'>gnu: tmuxifier: Don't use unstable tarball.</a><span class='msg-avail'>...</span></td><td>Tobias Geerinckx-Rice</td></tr>
<tr><td><span title='2019-02-14 18:16:07 +0100'>2019-02-14</span></td><td><a href='/guix/commit/gnu/packages/tmux.scm?id=7bef8fd5cf849ca3732e03632f40fa253599ae0a'>gnu: tmux-themepack: Use GIT-* helpers, not NAME.</a><span class='msg-avail'>...</span></td><td>Tobias Geerinckx-Rice</td></tr>
<tr><td><span title='2018-10-19 03:18:57 +0200'>2018-10-19</span></td><td><a href='/guix/commit/gnu/packages/tmux.scm?id=2c0a3ed1f98e81c6c2f828c488ec7318181de539'>gnu: tmux: Update to 2.8.</a><span class='msg-avail'>...</span></td><td>Marius Bakke</td></tr>
<tr><td><span title='2018-04-14 23:08:42 -0400'>2018-04-14</span></td><td><a href='/guix/commit/gnu/packages/tmux.scm?id=d2dd939e68370c7042a3ca3e6e644ce8d3f29e81'>gnu: tmux: Update to 2.7.</a><span class='msg-avail'>...</span></td><td>Leo Famulari</td></tr>
<tr><td><span title='2017-10-15 21:37:51 -0400'>2017-10-15</span></td><td><a href='/guix/commit/gnu/packages/tmux.scm?id=8de5ca028864d60d6bb6a60454fe491a6d194341'>gnu: tmux: Update to 2.6.</a><span class='msg-avail'>...</span></td><td>Leo Famulari</td></tr>