Author: kremenek Date: Sat Aug 8 12:58:47 2015 New Revision: 244400 URL: http://llvm.org/viewvc/llvm-project?rev=244400&view=rev Log: [Static Analyzer] Add --analyzer-target option to scan-build.
When interposing on a compiler doing cross-compilation, scan-build does not infer the target triple needed to pass to clang for doing static analysis. The --analyzer-target option allows one to manually specify the target triple used during static analysis (and only static analysis) for such cases. Patch by Honggyu Kim! Reviewed in http://reviews.llvm.org/D10356. Modified: cfe/trunk/tools/scan-build/ccc-analyzer cfe/trunk/tools/scan-build/scan-build Modified: cfe/trunk/tools/scan-build/ccc-analyzer URL: http://llvm.org/viewvc/llvm-project/cfe/trunk/tools/scan-build/ccc-analyzer?rev=244400&r1=244399&r2=244400&view=diff ============================================================================== --- cfe/trunk/tools/scan-build/ccc-analyzer (original) +++ cfe/trunk/tools/scan-build/ccc-analyzer Sat Aug 8 12:58:47 2015 @@ -68,6 +68,7 @@ my $Clang; my $DefaultCCompiler; my $DefaultCXXCompiler; my $IsCXX; +my $AnalyzerTarget; # If on OSX, use xcrun to determine the SDK root. my $UseXCRUN = 0; @@ -104,6 +105,8 @@ else { $IsCXX = 0 } +$AnalyzerTarget = $ENV{'CLANG_ANALYZER_TARGET'}; + ##===----------------------------------------------------------------------===## # Cleanup. ##===----------------------------------------------------------------------===## @@ -245,6 +248,10 @@ sub Analyze { push @Args, "-Xclang", "-analyzer-viz-egraph-ubigraph"; } + if (defined $AnalyzerTarget) { + push @Args, "-target", $AnalyzerTarget; + } + my $AnalysisArgs = GetCCArgs($HtmlDir, "--analyze", \@Args); @CmdArgs = @$AnalysisArgs; } Modified: cfe/trunk/tools/scan-build/scan-build URL: http://llvm.org/viewvc/llvm-project/cfe/trunk/tools/scan-build/scan-build?rev=244400&r1=244399&r2=244400&view=diff ============================================================================== --- cfe/trunk/tools/scan-build/scan-build (original) +++ cfe/trunk/tools/scan-build/scan-build Sat Aug 8 12:58:47 2015 @@ -1145,10 +1145,21 @@ OPTIONS: scan-build to use a specific compiler for *compilation* then you can use this option to specify a path to that compiler. + If the given compiler is a cross compiler, you may also need to provide + --analyzer-target option to properly analyze the source code because static + analyzer runs as if the code is compiled for the host machine by default. + --use-c++ [compiler path] --use-c++=[compiler path] - This is the same as "-use-cc" but for C++ code. + This is the same as "--use-cc" but for C++ code. + + --analyzer-target [target triple name for analysis] + --analyzer-target=[target triple name for analysis] + + This provides target triple information to clang static analyzer. + It only changes the target for analysis but doesn't change the target of a + real compiler given by --use-cc and --use-c++ options. -v @@ -1462,6 +1473,24 @@ while (@ARGV) { next; } + if ($arg =~ /^--analyzer-target(=(.+))?$/) { + shift @ARGV; + my $AnalyzerTarget; + + if (!defined $2 || $2 eq "") { + if (!@ARGV) { + DieDiag("'--analyzer-target' option requires a target triple name.\n"); + } + $AnalyzerTarget = shift @ARGV; + } + else { + $AnalyzerTarget = $2; + } + + $ENV{"CLANG_ANALYZER_TARGET"} = $AnalyzerTarget; + next; + } + if ($arg eq "-v") { shift @ARGV; $Verbose++; _______________________________________________ cfe-commits mailing list cfe-commits@lists.llvm.org http://lists.llvm.org/cgi-bin/mailman/listinfo/cfe-commits
