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
d0ad707906815ffdd48bd2aec89b4cc4e9'/><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=a40af5d0ad707906815ffdd48bd2aec89b4cc4e9'>root</a>/<a href='/guix/log/tests?id=a40af5d0ad707906815ffdd48bd2aec89b4cc4e9'>tests</a>/<a href='/guix/log/tests/modules.scm?id=a40af5d0ad707906815ffdd48bd2aec89b4cc4e9'>modules.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/tests/modules.scm?id=a40af5d0ad707906815ffdd48bd2aec89b4cc4e9&amp;showmsg=1'>Expand</a>)</th><th class='left'>Author</th></tr>
<tr><td><span title='2017-05-25 14:25:17 +0200'>2017-05-25</span></td><td><a href='/guix/commit/tests/modules.scm?id=bfe5264aa10c1af64adc5c24d0cf091562e3e09c'>modules: Raise an error when a dependency could not be found.</a><span class='msg-avail'>...</span></td><td>Ludovic Courtès</td></tr>