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-rw-r--r--clang/lib/Driver/Tools.cpp12
1 files changed, 6 insertions, 6 deletions
diff --git a/clang/lib/Driver/Tools.cpp b/clang/lib/Driver/Tools.cpp
index 800053cc931..99352a4de07 100644
--- a/clang/lib/Driver/Tools.cpp
+++ b/clang/lib/Driver/Tools.cpp
@@ -4135,9 +4135,9 @@ void Clang::ConstructJob(Compilation &C, const JobAction &JA,
CmdArgs.push_back("-fblocks-runtime-optional");
}
- // -fmodules enables modules (off by default).
+ // -fmodules enables the use of precompiled modules (off by default).
// Users can pass -fno-cxx-modules to turn off modules support for
- // C++/Objective-C++ programs, which is a little less mature.
+ // C++/Objective-C++ programs.
bool HaveModules = false;
if (Args.hasFlag(options::OPT_fmodules, options::OPT_fno_modules, false)) {
bool AllowedInCXX = Args.hasFlag(options::OPT_fcxx_modules,
@@ -4149,11 +4149,11 @@ void Clang::ConstructJob(Compilation &C, const JobAction &JA,
}
}
- // -fmodule-maps enables module map processing (off by default) for header
- // checking. It is implied by -fmodules.
+ // -fmodule-maps enables implicit reading of module map files. By default,
+ // this is enabled if we are using precompiled modules.
if (Args.hasFlag(options::OPT_fmodule_maps, options::OPT_fno_module_maps,
- false)) {
- CmdArgs.push_back("-fmodule-maps");
+ HaveModules)) {
+ CmdArgs.push_back("-fimplicit-module-maps");
}
// -fmodules-decluse checks that modules used are declared so (off by
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