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<base href="https://llvm.org/bugs/" />
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<th>Bug ID</th>
<td><a class="bz_bug_link
bz_status_NEW "
title="NEW --- - ccc-analyzer does not accept CCC_CC/CCC_CXX with quotes"
href="https://llvm.org/bugs/show_bug.cgi?id=26220">26220</a>
</td>
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<tr>
<th>Summary</th>
<td>ccc-analyzer does not accept CCC_CC/CCC_CXX with quotes
</td>
</tr>
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<th>Product</th>
<td>clang
</td>
</tr>
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<th>Version</th>
<td>3.7
</td>
</tr>
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<th>Hardware</th>
<td>All
</td>
</tr>
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<th>OS</th>
<td>All
</td>
</tr>
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<th>Status</th>
<td>NEW
</td>
</tr>
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<th>Severity</th>
<td>normal
</td>
</tr>
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<th>Priority</th>
<td>P
</td>
</tr>
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<th>Component</th>
<td>Static Analyzer
</td>
</tr>
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<th>Assignee</th>
<td>kremenek@apple.com
</td>
</tr>
<tr>
<th>Reporter</th>
<td>simon.kagstrom@netinsight.net
</td>
</tr>
<tr>
<th>CC</th>
<td>llvm-bugs@lists.llvm.org
</td>
</tr>
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<th>Classification</th>
<td>Unclassified
</td>
</tr></table>
<p>
<div>
<pre>We're using ccache to speed up compilation, so in our system, CC is set to
"ccache gcc-4.9" (basically). We want and need to run scan-build with the same
underlying compiler, so we run it with the CCC_CC="$(CC)" environment variable.
However, ccc-analyzer doesn't accept this, but falls back to the default
compiler instead. An easy way to reproduce this is to do
$ touch /tmp/a.c # Empty C source
$ CCC_CC=ls ccc-analyzer /tmp/a.c
/tmp/a.c
$ CCC_CC="true ; ls" ccc-analyzer /tmp/a.c
/usr/bin/ld: [...]: relocation 0 has invalid symbol index 11
so in the second case, ccc-analyzer ignores CCC_CC and falls back to gcc. My
Perl-knowledge is extremely limited, but I believe this is caused by
ccc-analyzer verifying that the compiler exists in the path:
# Search in the PATH if the compiler exists
sub SearchInPath {
my $file = shift;
foreach my $dir (split (':', $ENV{PATH})) {
if (-x "$dir/$file") {
return 1;
}
}
return 0;
}
[...]
$Compiler = $ENV{'CCC_CC'};
if (!defined $Compiler || (! -x $Compiler && ! SearchInPath($Compiler))) {
$Compiler = $DefaultCCompiler; }
I tested this with clang-3.7, but the latest ccc-analyzer seems to have the
same construct. Obviously, the same is true for the handling of CCC_CXX.</pre>
</div>
</p>
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