tjh.dev
clang-analyzer: respect $NIX_CFLAGS_COMPILE
When using scan-build, you're often going to want to use it in the
context of a Nix expression with buildInputs, and the default wrapper
scripts will put things like include locations for those inputs
$NIX_CFLAGS_COMPILE. Thus, scan-build also needs to pass them to the
analyzer - while the link flags aren't relevant, the include flags are.
This is because the analyzer executable that gets run by scan-build is
*not* clang-wrapper, but the actual clang executable, so it doesn't
implicitly add such arguments. The build is two-stage - it runs the real
clang wrapper once, and then the analyzer once.
Signed-off-by: Austin Seipp <aseipp@pobox.com>
+33
pkgs/development/tools/analysis/clang-analyzer/0001-Fix-scan-build-to-use-NIX_CFLAGS_COMPILE.patch
+33
pkgs/development/tools/analysis/clang-analyzer/0001-Fix-scan-build-to-use-NIX_CFLAGS_COMPILE.patch
···
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From 6ab08bc1c889e4fb9a39432b1a654eaa19ee65eb Mon Sep 17 00:00:00 2001
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From: Austin Seipp <aseipp@pobox.com>
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Date: Fri, 2 May 2014 12:28:23 -0500
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Subject: [PATCH] Fix scan-build to use NIX_CFLAGS_COMPILE
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Signed-off-by: Austin Seipp <aseipp@pobox.com>
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---
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tools/scan-build/ccc-analyzer | 9 +++++++++
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1 file changed, 9 insertions(+)
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diff --git a/tools/scan-build/ccc-analyzer b/tools/scan-build/ccc-analyzer
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index b463ec0..9d39dd0 100755
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--- a/tools/scan-build/ccc-analyzer
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+++ b/tools/scan-build/ccc-analyzer
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@@ -207,6 +207,15 @@ sub Analyze {
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push @Args, "-Xclang", "-analyzer-viz-egraph-ubigraph";
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}
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+
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+ # Add Nix flags to analysis
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+ if (defined $ENV{'NIX_CFLAGS_COMPILE'}) {
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+ my @nixArgs = split(/\s+/, $ENV{'NIX_CFLAGS_COMPILE'});
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+ foreach my $nixArg (@nixArgs) {
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+ push @Args, $nixArg;
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+ }
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+ }
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+
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my $AnalysisArgs = GetCCArgs("--analyze", \@Args);
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@CmdArgs = @$AnalysisArgs;
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}
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--
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1.8.3.2
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+6
-2
pkgs/development/tools/analysis/clang-analyzer/default.nix
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-2
pkgs/development/tools/analysis/clang-analyzer/default.nix
···
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sha256 = "06rb4j1ifbznl3gfhl98s7ilj0ns01p7y7zap4p7ynmqnc6pia92";
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};
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patches = [ ./0001-Fix-scan-build-to-use-NIX_CFLAGS_COMPILE.patch ];
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buildInputs = [ clang llvmPackages.clang perl makeWrapper ];
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buildPhase = "true";
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···
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cp -R tools/scan-build $out/libexec
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makeWrapper $out/libexec/scan-view/scan-view $out/bin/scan-view
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makeWrapper $out/libexec/scan-build/scan-build $out/bin/scan-build --add-flags "--use-cc=${clang}/bin/clang" --add-flags "--use-c++=${clang}/bin/clang++" --add-flags "--use-analyzer=${llvmPackages.clang}/bin/clang"
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makeWrapper $out/libexec/scan-build/scan-build $out/bin/scan-build \
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--add-flags "--use-cc=${clang}/bin/clang" \
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--add-flags "--use-c++=${clang}/bin/clang++" \
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--add-flags "--use-analyzer='${llvmPackages.clang}/bin/clang'"
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'';
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meta = {
···
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platforms = stdenv.lib.platforms.unix;
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maintainers = [ stdenv.lib.maintainers.thoughtpolice ];
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};
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-
}
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}