Adds support for auto-detection of compilation databases
from a source file and changes clang-check to make use of this.
This makes clang-check just work on in-tree builds, and allows
easy setup via a symlink per source directory to make clang-check
work without any extra configuration.
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@159990 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/Tooling/CompilationDatabase.cpp b/lib/Tooling/CompilationDatabase.cpp
index 227fa82..8e91112 100644
--- a/lib/Tooling/CompilationDatabase.cpp
+++ b/lib/Tooling/CompilationDatabase.cpp
@@ -12,6 +12,7 @@
//===----------------------------------------------------------------------===//
#include "clang/Tooling/CompilationDatabase.h"
+#include "clang/Tooling/Tooling.h"
#include "llvm/ADT/SmallString.h"
#include "llvm/Support/YAMLParser.h"
#include "llvm/Support/Path.h"
@@ -121,6 +122,23 @@
return Database.take();
}
+CompilationDatabase *
+CompilationDatabase::autoDetectFromSource(StringRef SourceFile,
+ std::string &ErrorMessage) {
+ llvm::SmallString<1024> AbsolutePath(getAbsolutePath(SourceFile));
+ StringRef Directory = llvm::sys::path::parent_path(AbsolutePath);
+ while (!Directory.empty()) {
+ std::string LoadErrorMessage;
+ if (CompilationDatabase *DB = loadFromDirectory(Directory,
+ LoadErrorMessage))
+ return DB;
+ Directory = llvm::sys::path::parent_path(Directory);
+ }
+ ErrorMessage = ("Could not auto-detect compilation database for file \"" +
+ SourceFile + "\"").str();
+ return NULL;
+}
+
FixedCompilationDatabase *
FixedCompilationDatabase::loadFromCommandLine(int &Argc,
const char **Argv,
@@ -283,4 +301,3 @@
} // end namespace tooling
} // end namespace clang
-