Add a flag that alters the behavior of the parse_headers feature. With the

flag, the headers of a target are compiled into a C++ module instead of being
parsed as their own translation unit. The module otherwise remains unused.

This way, parse_headers can be used to get a codebase ready for C++ modules.
parse_headers currently already gets close, but there are still ways in which a
header can be modules-incompatible although it parses fine.

--
PiperOrigin-RevId: 145729231
MOS_MIGRATED_REVID=145729231

1 files changed, 13 insertions, 13 deletions

diff --git a/src/main/java/com/google/devtools/build/lib/rules/cpp/CcCommon.java b/src/main/java/com/google/devtools/build/lib/rules/cpp/CcCommon.java
index 7cc659e1b5..1c7d0d1e99 100644
--- a/src/main/java/com/google/devtools/build/lib/rules/cpp/CcCommon.java
+++ b/src/main/java/com/google/devtools/build/lib/rules/cpp/CcCommon.java
@@ -76,19 +76,19 @@ public final class CcCommon {
     }
   };
     
-  /**
-   * Features we request to enable unless a rule explicitly doesn't support them.
-   */
-  private static final ImmutableSet<String> DEFAULT_FEATURES = ImmutableSet.of(
-      CppRuleClasses.DEPENDENCY_FILE,
-      CppRuleClasses.COMPILE_ACTION_FLAGS_IN_FLAG_SET,
-      CppRuleClasses.RANDOM_SEED,
-      CppRuleClasses.MODULE_MAPS,
-      CppRuleClasses.MODULE_MAP_HOME_CWD,
-      CppRuleClasses.INCLUDE_PATHS,
-      CppRuleClasses.PIC,
-      CppRuleClasses.PER_OBJECT_DEBUG_INFO,
-      CppRuleClasses.PREPROCESSOR_DEFINES);
+  /** Features we request to enable unless a rule explicitly doesn't support them. */
+  private static final ImmutableSet<String> DEFAULT_FEATURES =
+      ImmutableSet.of(
+          CppRuleClasses.DEPENDENCY_FILE,
+          CppRuleClasses.COMPILE_ACTION_FLAGS_IN_FLAG_SET,
+          CppRuleClasses.RANDOM_SEED,
+          CppRuleClasses.MODULE_MAPS,
+          CppRuleClasses.MODULE_MAP_HOME_CWD,
+          CppRuleClasses.HEADER_MODULE_COMPILE,
+          CppRuleClasses.INCLUDE_PATHS,
+          CppRuleClasses.PIC,
+          CppRuleClasses.PER_OBJECT_DEBUG_INFO,
+          CppRuleClasses.PREPROCESSOR_DEFINES);
 
   /** C++ configuration */
   private final CppConfiguration cppConfiguration;