Add -fno-implicit-modules.
If this flag is set, we error out when a module build is required. This is
useful in environments where all required modules are passed via -fmodule-file.
llvm-svn: 230006
diff --git a/clang/lib/Frontend/CompilerInstance.cpp b/clang/lib/Frontend/CompilerInstance.cpp
index 5d554b7..832aee2 100644
--- a/clang/lib/Frontend/CompilerInstance.cpp
+++ b/clang/lib/Frontend/CompilerInstance.cpp
@@ -1378,6 +1378,12 @@
auto Override = ModuleFileOverrides.find(ModuleName);
bool Explicit = Override != ModuleFileOverrides.end();
+ if (!Explicit && !getLangOpts().ImplicitModules) {
+ getDiagnostics().Report(ModuleNameLoc, diag::err_module_build_disabled)
+ << ModuleName;
+ ModuleBuildFailed = true;
+ return ModuleLoadResult();
+ }
std::string ModuleFileName =
Explicit ? Override->second