Use gcc as the default C compiler if CC is not set.


--- gobject-introspection-1.44.0.orig/giscanner/__init__.py	2014-08-04 22:37:07.000000000 +0800
+++ gobject-introspection-1.44.0/giscanner/__init__.py	2015-04-20 17:30:26.507697234 +0800
@@ -22,3 +22,5 @@
 builddir = os.environ.get('UNINSTALLED_INTROSPECTION_BUILDDIR')
 if builddir is not None:
     __path__.append(os.path.join(builddir, 'giscanner'))
+if not 'CC' in os.environ:
+    os.environ['CC'] = 'gcc'
o'/></a></td>
<td class='main'><a href='/'>index</a> : <a href='/guix/'>guix</a></td><td class='form'><form method='get'>
<input type='hidden' name='id' value='339eef40f85a08609bb711557a67945173b490cb'/><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>
<tr><td class='sub'>Wojtek's customized Guix</td><td class='sub right'></td></tr></table>
<table class='tabs'><tr><td>
<a href='/guix/about/'>about</a><a href='/guix/'>summary</a><a href='/guix/refs/?id=339eef40f85a08609bb711557a67945173b490cb'>refs</a><a class='active' href='/guix/log/tests/challenge.scm'>log</a><a href='/guix/tree/tests/challenge.scm?id=339eef40f85a08609bb711557a67945173b490cb'>tree</a><a href='/guix/commit/tests/challenge.scm?id=339eef40f85a08609bb711557a67945173b490cb'>commit</a><a href='/guix/diff/tests/challenge.scm?id=339eef40f85a08609bb711557a67945173b490cb'>diff</a></td><td class='form'><form class='right' method='get' action='/guix/log/tests/challenge.scm'>
<input type='hidden' name='id' value='339eef40f85a08609bb711557a67945173b490cb'/><select name='qt'>
<option value='grep'>log msg</option>
<option value='author'>author</option>
<option value='committer'>committer</option>
<option value='range'>range</option>
</select>
<input class='txt' type='search' size='10' name='q' value=''/>
<input type='submit' value='search'/>
</form>
</td></tr></table>
<div class='path'>path: <a href='/guix/log/?id=339eef40f85a08609bb711557a67945173b490cb'>root</a>/<a href='/guix/log/tests?id=339eef40f85a08609bb711557a67945173b490cb'>tests</a>/<a href='/guix/log/tests/challenge.scm?id=339eef40f85a08609bb711557a67945173b490cb'>challenge.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/challenge.scm?id=339eef40f85a08609bb711557a67945173b490cb&amp;showmsg=1'>Expand</a>)</th><th class='left'>Author</th></tr>
<tr><td><span title='2018-11-12 23:37:13 +0100'>2018-11-12</span></td><td><a href='/guix/commit/tests/challenge.scm?id=9ed86fe175c15c819d6d86681c8136ff6bc927c0'>tests: Add 'test-assertm' to (guix tests).</a><span class='msg-avail'>...</span></td><td>Ludovic Courtès</td></tr>
<tr><td><span title='2018-09-04 17:25:11 +0200'>2018-09-04</span></td><td><a href='/guix/commit/tests/challenge.scm?id=ca719424455465fca4b872c371daf2a46de88b33'>Switch to Guile-Gcrypt.</a><span class='msg-avail'>...</span></td><td>Ludovic Courtès</td></tr>
<tr><td><span title='2017-01-14 00:57:51 +0100'>2017-01-14</span></td><td><a href='/guix/commit/tests/challenge.scm?id=4d8e95097e5c40da9dd57d358bd189dcf82ff9bf'>challenge: Return comparison reports instead of just discrepancies.</a><span class='msg-avail'>...</span></td><td>Ludovic Courtès</td></tr>