Per discussion at
http://lists.llvm.org/pipermail/cfe-dev/2015-December/046321.html allow
tools to work in the absence of a compilation database, but warn the user
about the absence.
Index: lib/Tooling/CommonOptionsParser.cpp
===================================================================
--- lib/Tooling/CommonOptionsParser.cpp (revision 254518)
+++ lib/Tooling/CommonOptionsParser.cpp (working copy)
@@ -116,8 +116,7 @@
cl::HideUnrelatedOptions(Category);
- Compilations.reset(FixedCompilationDatabase::loadFromCommandLine(argc,
- argv));
+ Compilations.reset(FixedCompilationDatabase::loadFromCommandLine(argc,
argv));
cl::ParseCommandLineOptions(argc, argv, Overview);
SourcePathList = SourcePaths;
if (!Compilations) {
@@ -129,8 +128,13 @@
Compilations = CompilationDatabase::autoDetectFromSource(SourcePaths[0],
ErrorMessage);
}
- if (!Compilations)
- llvm::report_fatal_error(ErrorMessage);
+ if (!Compilations) {
+ errs() << "Compilation database not found - using default options\n";
+ int argc = 1;
+ const char *argv[] = {"--"};
+ Compilations.reset(
+ FixedCompilationDatabase::loadFromCommandLine(argc, argv));
+ }
}
auto AdjustingCompilations =
llvm::make_unique<ArgumentsAdjustingCompilations>(
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