From: Eric Christopher <echristo@apple.com>
Date: Fri, 17 Dec 2010 19:13:21 +0000 (+0000)
Subject: Horrible hack for systems that use -dumpversion with clang to expect versions
X-Git-Url: https://granicus.if.org/sourcecode?a=commitdiff_plain;h=2c5c3135286a8cb27406dc6dcecfbd16e7c898fa;p=clang

Horrible hack for systems that use -dumpversion with clang to expect versions
that match gcc versions. Eew.


git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@122080 91177308-0d34-0410-b5e6-96231b3b80d8
---

diff --git a/include/clang/Basic/Version.h b/include/clang/Basic/Version.h
index ede68ed50d..05eff65072 100644
--- a/include/clang/Basic/Version.h
+++ b/include/clang/Basic/Version.h
@@ -40,6 +40,10 @@
   CLANG_MAKE_VERSION_STRING(CLANG_VERSION_MAJOR,CLANG_VERSION_MINOR)
 #endif
 
+/// \brief A horrible hack to work around projects that depend upon gcc
+/// compatible compilers having versions that resemble gcc.
+#define GCC_COMPAT_VERSION_STRING CLANG_MAKE_VERSION_STRING(4,2)
+
 namespace clang {
   /// \brief Retrieves the repository path (e.g., Subversion path) that 
   /// identifies the particular Clang branch, tag, or trunk from which this
diff --git a/lib/Driver/Driver.cpp b/lib/Driver/Driver.cpp
index a3b7167c8b..621ce8dd58 100644
--- a/lib/Driver/Driver.cpp
+++ b/lib/Driver/Driver.cpp
@@ -417,8 +417,11 @@ bool Driver::HandleImmediateArgs(const Compilation &C) {
     return false;
   }
 
+  // This is a horrible hack. Some projects depend on gcc-like versions
+  // coming out of gcc -dumpversion to determine if the gcc compatible
+  // compiler has a correct version. Ideally we'd fix all of those projects.
   if (C.getArgs().hasArg(options::OPT_dumpversion)) {
-    llvm::outs() << CLANG_VERSION_STRING "\n";
+    llvm::outs() << GCC_COMPAT_VERSION_STRING "\n";
     return false;
   }