Use ccCmd to generate clang-tidy dependent file
* After this change, make libtinyxml2-tidy should generate
correct out/.../libtinyxml2.tidy.d file.
Touching one of the dependent files, e.g., tinyxml2.h,
should invoke clang-tidy but not to recompile tinyxml2.o.
* Note that linking libraries still depend on .tidy targets,
so make libtinyxml2 will call clang-tidy, regnerate
tinyxml2.tidy.d, tinyxml2.tidy, tinyxml2.o.d, tinyxml2.o.
* A clang-tidy rule uses the same $cFlags for both clang and clang-tidy.
To share it and avoid over long command lines, we use modern shell
array variables and cannot use old bourne shell.
Bug: 199169329
Test: WITH_TIDY=1 make
Test: WITH_TIDY=1 make libtinyxml2-tidy | grep tinyxml2
Test: touch external/tinyxml2/tinyxml2.h; make libtinyxml2-tidy | grep tinyxml2
Change-Id: I6175add58d7313ee50c9308b78c9290a60770052
diff --git a/cc/builder.go b/cc/builder.go
index b07acf1..4b0a4b6 100644
--- a/cc/builder.go
+++ b/cc/builder.go
@@ -199,8 +199,18 @@
// Rule for invoking clang-tidy (a clang-based linter).
clangTidy, clangTidyRE = pctx.RemoteStaticRules("clangTidy",
blueprint.RuleParams{
- Command: "rm -f $out && $tidyVars $reTemplate${config.ClangBin}/clang-tidy $tidyFlags $in -- $cFlags && touch $out",
- CommandDeps: []string{"${config.ClangBin}/clang-tidy"},
+ Depfile: "${out}.d",
+ Deps: blueprint.DepsGCC,
+ // Pick bash because some machines with old /bin/sh cannot handle arrays.
+ // All $cFlags and $tidyFlags should have single quotes escaped.
+ // Assume no single quotes in other parameters like $in, $out, $ccCmd.
+ Command: "/bin/bash -c 'SRCF=$in; TIDYF=$out; CLANGFLAGS=($cFlags); " +
+ "rm -f $$TIDYF $${TIDYF}.d && " +
+ "${config.CcWrapper}$ccCmd \"$${CLANGFLAGS[@]}\" -E -o /dev/null $$SRCF " +
+ "-MQ $$TIDYF -MD -MF $${TIDYF}.d && " +
+ "$tidyVars $reTemplate${config.ClangBin}/clang-tidy $tidyFlags $$SRCF " +
+ "-- \"$${CLANGFLAGS[@]}\" && touch $$TIDYF'",
+ CommandDeps: []string{"${config.ClangBin}/clang-tidy", "$ccCmd"},
},
&remoteexec.REParams{
Labels: map[string]string{"type": "lint", "tool": "clang-tidy", "lang": "cpp"},
@@ -214,7 +224,7 @@
// (1) New timestamps trigger clang and clang-tidy compilations again.
// (2) Changing source files caused concurrent clang or clang-tidy jobs to crash.
Platform: map[string]string{remoteexec.PoolKey: "${config.REClangTidyPool}"},
- }, []string{"cFlags", "tidyFlags", "tidyVars"}, []string{})
+ }, []string{"ccCmd", "cFlags", "tidyFlags", "tidyVars"}, []string{})
_ = pctx.SourcePathVariable("yasmCmd", "prebuilts/misc/${config.HostPrebuiltTag}/yasm/yasm")
@@ -437,6 +447,12 @@
}
}
+func escapeSingleQuotes(s string) string {
+ // Replace single quotes to work when embedded in a single quoted string for bash.
+ // Relying on string concatenation of bash to get A'B from quoted 'A'\''B'.
+ return strings.Replace(s, `'`, `'\''`, -1)
+}
+
// Generate rules for compiling multiple .c, .cpp, or .S files to individual .o files
func transformSourceToObj(ctx android.ModuleContext, subdir string, srcFiles android.Paths,
flags builderFlags, pathDeps android.Paths, cFlagsDeps android.Paths) Objects {
@@ -672,14 +688,12 @@
Description: "clang-tidy " + srcFile.Rel(),
Output: tidyFile,
Input: srcFile,
- // We must depend on objFile, since clang-tidy doesn't
- // support exporting dependencies.
- Implicit: objFile,
- Implicits: cFlagsDeps,
- OrderOnly: pathDeps,
+ Implicits: cFlagsDeps,
+ OrderOnly: pathDeps,
Args: map[string]string{
- "cFlags": shareFlags("cFlags", moduleToolingFlags),
- "tidyFlags": shareFlags("tidyFlags", config.TidyFlagsForSrcFile(srcFile, flags.tidyFlags)),
+ "ccCmd": ccCmd,
+ "cFlags": shareFlags("cFlags", escapeSingleQuotes(moduleToolingFlags)),
+ "tidyFlags": shareFlags("tidyFlags", escapeSingleQuotes(config.TidyFlagsForSrcFile(srcFile, flags.tidyFlags))),
"tidyVars": tidyVars, // short and not shared
},
})