scan-build now interrogates clang for a list of available analyses, and presents
these as options to the user of scan-build. llvm-svn: 53618
This commit is contained in:
Ted Kremenek
parent
fa89e2f09c
commit
3a787bf977
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@ -29,6 +29,10 @@ my $BuildDate;
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my $UseColor = ((($ENV{'TERM'} eq 'xterm-color') and -t STDOUT)
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and defined($ENV{'SCAN_BUILD_COLOR'}));
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##----------------------------------------------------------------------------##
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# Diagnostics
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##----------------------------------------------------------------------------##
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sub Diag {
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if ($UseColor) {
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print BOLD, MAGENTA "$Prog: @_";
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@ -51,6 +55,53 @@ sub DieDiag {
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exit(0);
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}
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##----------------------------------------------------------------------------##
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# Some initial preprocessing of Clang options.
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##----------------------------------------------------------------------------##
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my $ClangSB = "$RealBin/clang";
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my $Clang = $ClangSB;
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if (! -x $ClangSB) {
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$Clang = "clang";
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}
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my %AvailableAnalyses;
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# Query clang for analysis options.
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open(PIPE, "$Clang --help |") or
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DieDiag("Cannot execute '$Clang'");
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my $FoundAnalysis = 0;
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while(<PIPE>) {
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if ($FoundAnalysis == 0) {
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if (/Available Source Code Analyses/) {
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$FoundAnalysis = 1;
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}
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next;
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}
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if (/^\s\s\s\s([^\s]+)\s(.+)$/) {
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next if ($1 =~ /-dump/ or $1 =~ /-view/
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or $1 =~ /-checker-simple/ or $1 =~ /-warn-uninit/);
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$AvailableAnalyses{$1} = $2;
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next;
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}
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last;
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}
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close (PIPE);
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my %AnalysesDefaultEnabled = (
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'-warn-dead-stores' => 1,
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'-checker-cfref' => 1,
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'-warn-objc-methodsigs' => 1
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);
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##----------------------------------------------------------------------------##
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# GetHTMLRunDir - Construct an HTML directory name for the current run.
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##----------------------------------------------------------------------------##
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@ -592,9 +643,6 @@ ENDTEXT
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print <<ENDTEXT;
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OPTIONS:
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-a - The analysis to run. The default is 'checker-cfref'.
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Valid options are: 'checker-cfref', 'fsyntax-only'
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-o - Target directory for HTML report files. Subdirectories
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will be created as needed to represent separate "runs" of
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the analyzer. If this option is not specified, a directory
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@ -614,6 +662,26 @@ OPTIONS:
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-V - View analysis results in a web browser when the build
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--view completes.
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ENDTEXT
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print " Available Source Code Analyses (multiple analyses may be specified):\n\n";
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foreach my $Analysis (sort keys %AvailableAnalyses) {
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if (defined($AnalysesDefaultEnabled{$Analysis})) {
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print " (+)";
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}
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else {
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print " ";
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}
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print " $Analysis $AvailableAnalyses{$Analysis}\n";
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}
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print <<ENDTEXT
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(+) == analysis enabled by default unless one
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or more analysis options are specified
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BUILD OPTIONS
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You can specify any build option acceptable to the build command.
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@ -637,7 +705,7 @@ ENDTEXT
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my $HtmlDir; # Parent directory to store HTML files.
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my $IgnoreErrors = 0; # Ignore build errors.
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my $ViewResults = 0; # View results when the build terminates.
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my $Analysis;
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my @AnalysesToRun;
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if (!@ARGV) {
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DisplayHelp();
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@ -655,19 +723,9 @@ while (@ARGV) {
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exit 0;
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}
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if ($arg eq "-a") {
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if (defined($AvailableAnalyses{$arg})) {
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shift @ARGV;
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if (!@ARGV) {
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DieDiag("'-a' option requires an analysis type.\n");
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}
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$Analysis = shift @ARGV;
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if (!($Analysis eq "checker-cfref" or $Analysis eq "fsyntax-only")) {
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DieDiag("Invalid argument '$Analysis' to -a.\n");
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}
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push @AnalysesToRun, $arg;
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next;
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}
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@ -738,11 +796,9 @@ my $Cmd = "$RealBin/ccc-analyzer";
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DieDiag("Executable 'ccc-analyzer' does not exist at '$Cmd'\n")
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if (! -x $Cmd);
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my $Clang = "$RealBin/clang";
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if (! -x $Clang) {
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Diag("'clang' executable not found in '$RealBin'. Using 'clang' from path.\n");
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$Clang = "clang";
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if (! -x $ClangSB) {
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Diag("'clang' executable not found in '$RealBin'.\n");
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Diag("Using 'clang' from path.\n");
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}
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$ENV{'CC'} = $Cmd;
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@ -756,8 +812,8 @@ if ($Verbose >= 3) {
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$ENV{'CCC_ANALYZER_LOG'} = 1;
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}
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if (defined($Analysis)) {
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$ENV{'CCC_ANALYZER_ANALYSIS'} = $Analysis;
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if (scalar(@AnalysesToRun)) {
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$ENV{'CCC_ANALYZER_ANALYSIS'} = join ' ',@AnalysesToRun;
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}
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# Run the build.
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