Add option to switch off putting header modules into the dependency file.

llvm-svn: 232721

diff --git a/clang/include/clang/Driver/Options.td b/clang/include/clang/Driver/Options.td
index 1dc610b..20b1c43 100644 (file)
--- a/clang/include/clang/Driver/Options.td
+++ b/clang/include/clang/Driver/Options.td
@@ -772,6 +772,10 @@ def fno_modules_strict_decluse : Flag <["-"], "fno-strict-modules-decluse">, Gro
   Flags<[DriverOption]>;
 def fimplicit_modules : Flag <["-"], "fimplicit-modules">, Group<f_Group>,
   Flags<[DriverOption]>;
+def fmodule_file_deps : Flag <["-"], "fmodule-file-deps">, Group<f_Group>,
+  Flags<[DriverOption]>;
+def fno_module_file_deps : Flag <["-"], "fno-module-file-deps">, Group<f_Group>,
+  Flags<[DriverOption]>;
 def fno_ms_extensions : Flag<["-"], "fno-ms-extensions">, Group<f_Group>;
 def fno_ms_compatibility : Flag<["-"], "fno-ms-compatibility">, Group<f_Group>;
 def fno_delayed_template_parsing : Flag<["-"], "fno-delayed-template-parsing">, Group<f_Group>;

diff --git a/clang/lib/Driver/Tools.cpp b/clang/lib/Driver/Tools.cpp
index 74c5b7f..4ec8cae 100644 (file)
--- a/clang/lib/Driver/Tools.cpp
+++ b/clang/lib/Driver/Tools.cpp
@@ -324,8 +324,9 @@ void Clang::AddPreprocessingOptions(Compilation &C,
     if (A->getOption().matches(options::OPT_M) ||
         A->getOption().matches(options::OPT_MD))
       CmdArgs.push_back("-sys-header-deps");
-
-    if (isa<PrecompileJobAction>(JA))
+    if ((isa<PrecompileJobAction>(JA) &&
+         !Args.hasArg(options::OPT_fno_module_file_deps)) ||
+        Args.hasArg(options::OPT_fmodule_file_deps))
       CmdArgs.push_back("-module-file-deps");
   }
 

diff --git a/clang/test/Driver/pch-deps.c b/clang/test/Driver/pch-deps.c
index 3048636..2c140e5 100644 (file)
--- a/clang/test/Driver/pch-deps.c
+++ b/clang/test/Driver/pch-deps.c
@@ -8,3 +8,14 @@
 // RUN: FileCheck %s -check-prefix=CHECK-NOPCH -input-file=%t
 // CHECK-NOPCH: -dependency-file
 // CHECK-NOPCH-NOT: -module-file-deps
+
+// RUN: %clang -x c-header %s -o %t.pch -MMD -MT dependencies -MF %t.d \
+// RUN:     -fno-module-file-deps -### 2> %t
+// RUN: FileCheck %s -check-prefix=CHECK-EXPLICIT -input-file=%t
+// CHECK-EXPLICIT: -dependency-file
+// CHECK-EXPLICIT-NOT: -module-file-deps
+
+// RUN: %clang -x c++ %s -o %t.o -MMD -MT dependencies -MF %t.d -fmodule-file-deps -### 2> %t
+// RUN: FileCheck %s -check-prefix=CHECK-EXPLICIT-NOPCH -input-file=%t
+// CHECK-EXPLICIT-NOPCH: -dependency-file
+// CHECK-EXPLICIT-NOPCH: -module-file-deps