Taken from https://bug1339931.bmoattachments.org/attachment.cgi?id=8837770.

Add major version to pkg-config filename.
Author: Rico Tzschichholz <ricotz@ubuntu.com>
Forwarded: no
Last-Update: 2015-05-04

Index: b/js/src/Makefile.in
===================================================================
--- a/js/src/Makefile.in
+++ b/js/src/Makefile.in
@@ -214,10 +214,10 @@
 $(JS_CONFIG_NAME): js-config
    cp $^ $@
 
-$(LIBRARY_NAME).pc: js.pc
+$(JS_LIBRARY_NAME).pc: js.pc
 	cp $^ $@
 
-install:: $(LIBRARY_NAME).pc
+install:: $(JS_LIBRARY_NAME).pc
 	$(SYSINSTALL) $^ $(DESTDIR)$(libdir)/pkgconfig
 
 install:: js-config.h
85094c9667335bc4d7442b43'/><select name='h' onchange='this.form.submit();'>
<option value='koszko' selected='selected'>koszko</option>
<option value='koszko-scripts'>koszko-scripts</option>
</select> <input type='submit' value='switch'/></form></td></tr>
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<div class='path'>path: <a href='/guix/log/?id=556c06da5071110985094c9667335bc4d7442b43'>root</a>/<a href='/guix/log/etc?id=556c06da5071110985094c9667335bc4d7442b43'>etc</a>/<a href='/guix/log/etc/snippets?id=556c06da5071110985094c9667335bc4d7442b43'>snippets</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/etc/snippets?id=556c06da5071110985094c9667335bc4d7442b43&amp;showmsg=1'>Expand</a>)</th><th class='left'>Author</th></tr>
<tr><td><span title='2019-03-26 14:18:12 +0100'>2019-03-26</span></td><td><a href='/guix/commit/etc/snippets?id=6994e6743603ab73cc32d32786a55672f4fa46f0'>etc: Add "rename" snippet.</a><span class='msg-avail'>...</span></td><td>Pierre Neidhardt</td></tr>
<tr><td><span title='2019-03-08 00:17:30 +0100'>2019-03-08</span></td><td><a href='/guix/commit/etc/snippets?id=95803946c7dbdff88db09fa5fe98e70d607712a7'>etc: snippets: Prefill package name.</a><span class='msg-avail'>...</span></td><td>Ricardo Wurmus</td></tr>
<tr><td><span title='2019-03-07 23:55:24 +0100'>2019-03-07</span></td><td><a href='/guix/commit/etc/snippets?id=d6234620ace1863d8102b065311ef3d94e0931da'>etc: snippets: Prefill package name and version.</a><span class='msg-avail'>...</span></td><td>Ricardo Wurmus</td></tr>
<tr><td><span title='2018-10-10 17:33:42 +0200'>2018-10-10</span></td><td><a href='/guix/commit/etc/snippets?id=d634db9401ac320383d45e24431442259cf6a2a4'>etc: Use git-file-name if origin is git-fetch.</a><span class='msg-avail'>...</span></td><td>Pierre Neidhardt</td></tr>
<tr><td><span title='2018-07-13 12:45:11 +0530'>2018-07-13</span></td><td><a href='/guix/commit/etc/snippets?id=9286c2950494b110e12d58d4ebd693d614120afe'>etc: snippets: Add guix-commit-message-use-https-home-page.</a><span class='msg-avail'>...</span></td><td>Arun Isaac</td></tr>
<tr><td><span title='2018-07-13 09:27:31 +0530'>2018-07-13</span></td><td><a href='/guix/commit/etc/snippets?id=202befb4ae775cfdab1566f4a69ec184406a56be'>etc: snippets: Add new build systems to package snippet.</a><span class='msg-avail'>...</span></td><td>Arun Isaac</td></tr>
<tr><td><span title='2017-12-15 23:15:32 +0100'>2017-12-15</span></td><td><a href='/guix/commit/etc/snippets?id=42cdcdff1945b112452029c6a79445aac15ffd16'>etc: Add snippets.</a><span class='msg-avail'>...</span></td><td>Ricardo Wurmus</td></tr>