Add -isystem-prefix and -ino-system-prefix arguments, which can be used to

override whether headers are system headers by checking for prefixes of the
header name specified in the #include directive.

This allows warnings to be disabled for third-party code which is found in
specific subdirectories of include paths.


git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@158418 91177308-0d34-0410-b5e6-96231b3b80d8

1 files changed, 22 insertions, 0 deletions

diff --git a/include/clang/Frontend/HeaderSearchOptions.h b/include/clang/Frontend/HeaderSearchOptions.h
index 687f439fe1..bdd26232c0 100644
--- a/include/clang/Frontend/HeaderSearchOptions.h
+++ b/include/clang/Frontend/HeaderSearchOptions.h
@@ -69,6 +69,18 @@ public:
         IsInternal(isInternal), ImplicitExternC(implicitExternC) {}
   };
 
+  struct SystemHeaderPrefix {
+    /// A prefix to be matched against paths in #include directives.
+    std::string Prefix;
+
+    /// True if paths beginning with this prefix should be treated as system
+    /// headers.
+    bool IsSystemHeader;
+
+    SystemHeaderPrefix(StringRef Prefix, bool IsSystemHeader)
+      : Prefix(Prefix), IsSystemHeader(IsSystemHeader) {}
+  };
+
   /// If non-empty, the directory to use as a "virtual system root" for include
   /// paths.
   std::string Sysroot;
@@ -76,6 +88,9 @@ public:
   /// User specified include entries.
   std::vector<Entry> UserEntries;
 
+  /// User-specified system header prefixes.
+  std::vector<SystemHeaderPrefix> SystemHeaderPrefixes;
+
   /// The directory which holds the compiler resource files (builtin includes,
   /// etc.).
   std::string ResourceDir;
@@ -117,6 +132,13 @@ public:
     UserEntries.push_back(Entry(Path, Group, IsUserSupplied, IsFramework,
                                 IgnoreSysRoot, IsInternal, ImplicitExternC));
   }
+
+  /// AddSystemHeaderPrefix - Override whether #include directives naming a
+  /// path starting with \arg Prefix should be considered as naming a system
+  /// header.
+  void AddSystemHeaderPrefix(StringRef Prefix, bool IsSystemHeader) {
+    SystemHeaderPrefixes.push_back(SystemHeaderPrefix(Prefix, IsSystemHeader));
+  }
 };
 
 } // end namespace clang