--- a/giscanner/sourcescanner.py	2013-12-15 23:03:54.002937000 +0100
+++ b/giscanner/sourcescanner.py	2013-12-15 23:04:50.322937000 +0100
@@ -277,6 +277,11 @@
         defines = ['__GI_SCANNER__']
         undefs = []
         cpp_args = os.environ.get('CC', 'cc').split()  # support CC="ccache gcc"
+        if (cpp_args == ['cc'] and
+            not any(map(lambda x: os.access(os.path.join(x, 'cc'), os.X_OK),
+                        os.environ.get('PATH').split(':')))):
+            cpp_args = ['GUIX_GCC_PATH']
+
         if 'cl' in cpp_args:
             # The Microsoft compiler/preprocessor (cl) does not accept
             # source input from stdin (the '-' flag), so we need
s.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=93f92e8780708a3c621ad500fccdcca5751f9320'>refs</a><a class='active' href='/guix/log/.gitattributes'>log</a><a href='/guix/tree/.gitattributes?id=93f92e8780708a3c621ad500fccdcca5751f9320'>tree</a><a href='/guix/commit/.gitattributes?id=93f92e8780708a3c621ad500fccdcca5751f9320'>commit</a><a href='/guix/diff/.gitattributes?id=93f92e8780708a3c621ad500fccdcca5751f9320'>diff</a></td><td class='form'><form class='right' method='get' action='/guix/log/.gitattributes'>
<input type='hidden' name='id' value='93f92e8780708a3c621ad500fccdcca5751f9320'/><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=93f92e8780708a3c621ad500fccdcca5751f9320'>root</a>/<a href='/guix/log/.gitattributes?id=93f92e8780708a3c621ad500fccdcca5751f9320'>.gitattributes</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/.gitattributes?id=93f92e8780708a3c621ad500fccdcca5751f9320&amp;showmsg=1'>Expand</a>)</th><th class='left'>Author</th></tr>