[gentoo-commits] proj/hardened-dev:musl commit in: sys-devel/llvm/, sys-devel/llvm/files/

[Anthony G. Basile]

commit:     8d75a00db98a0b522aa32267d67b7cf59a707cee
Author:     Felix Janda <felix.janda <AT> posteo <DOT> de>
AuthorDate: Wed Jan  7 21:06:52 2015 +0000
Commit:     Anthony G. Basile <blueness <AT> gentoo <DOT> org>
CommitDate: Sat Jan 31 21:56:46 2015 +0000
URL:        http://sources.gentoo.org/gitweb/?p=proj/hardened-dev.git;a=commit;h=8d75a00d

sys-devel/llvm: Hack around linux=glibc assumptions

---
 .../clang-3.4-darwin_prefix-include-paths.patch    |  18 +
 .../llvm/files/clang-3.5-gentoo-install.patch      |  57 +++
 ...clang-3.5-gentoo-runtime-gcc-detection-v3.patch |  42 ++
 sys-devel/llvm/files/llvm-3.2-nodoctargz.patch     |  45 ++
 sys-devel/llvm/files/llvm-3.5-gcc-4.9.patch        |  43 ++
 sys-devel/llvm/files/llvm-3.5-gentoo-install.patch |  83 ++++
 .../llvm/files/llvm-3.5-musl-compiler-rt.patch     |  58 +++
 sys-devel/llvm/files/llvm-3.5-musl-fixes.patch     |  77 +++
 sys-devel/llvm/files/llvm-3.5-musl-support.patch   | 124 +++++
 .../files/llvm-3.5.0-fix_LLVMExports_cmake.patch   |  39 ++
 sys-devel/llvm/llvm-3.5.0-r99.ebuild               | 530 +++++++++++++++++++++
 sys-devel/llvm/metadata.xml                        |  28 ++
 12 files changed, 1144 insertions(+)

diff --git a/sys-devel/llvm/files/clang-3.4-darwin_prefix-include-paths.patch b/sys-devel/llvm/files/clang-3.4-darwin_prefix-include-paths.patch
new file mode 100644
index 0000000..f5f1d9e
--- /dev/null
+++ b/sys-devel/llvm/files/clang-3.4-darwin_prefix-include-paths.patch
@@ -0,0 +1,18 @@
+--- tools/clang/lib/Frontend/InitHeaderSearch.cpp
++++ tools/clang/lib/Frontend/InitHeaderSearch.cpp
+@@ -233,6 +233,7 @@
+     case llvm::Triple::Bitrig:
+       break;
+     default:
++      AddPath("@GENTOO_PORTAGE_EPREFIX@/usr/include", System, false);
+       // FIXME: temporary hack: hard-coded paths.
+       AddPath("/usr/local/include", System, false);
+       break;
+@@ -505,6 +506,7 @@
+   // Add the default framework include paths on Darwin.
+   if (HSOpts.UseStandardSystemIncludes) {
+     if (triple.isOSDarwin()) {
++      AddPath("@GENTOO_PORTAGE_EPREFIX@/Frameworks", System, true);
+       AddPath("/System/Library/Frameworks", System, true);
+       AddPath("/Library/Frameworks", System, true);
+     }

diff --git a/sys-devel/llvm/files/clang-3.5-gentoo-install.patch b/sys-devel/llvm/files/clang-3.5-gentoo-install.patch
new file mode 100644
index 0000000..5d4261d
--- /dev/null
+++ b/sys-devel/llvm/files/clang-3.5-gentoo-install.patch
@@ -0,0 +1,57 @@
+---
+ tools/clang/lib/Driver/Tools.cpp        | 2 +-
+ tools/clang/tools/scan-build/scan-build | 4 ++--
+ tools/clang/tools/scan-view/scan-view   | 2 +-
+ 3 files changed, 4 insertions(+), 4 deletions(-)
+
+diff --git a/tools/clang/lib/Driver/Tools.cpp b/tools/clang/lib/Driver/Tools.cpp
+index 187ed38..55bcd99 100644
+--- a/tools/clang/lib/Driver/Tools.cpp
++++ b/tools/clang/lib/Driver/Tools.cpp
+@@ -1404,7 +1404,7 @@ static void AddGoldPlugin(const ToolChain &ToolChain, const ArgList &Args,
+   // as gold requires -plugin to come before any -plugin-opt that -Wl might
+   // forward.
+   CmdArgs.push_back("-plugin");
+-  std::string Plugin = ToolChain.getDriver().Dir + "/../lib/LLVMgold.so";
++  std::string Plugin = ToolChain.getDriver().Dir + "/../@libdir@/LLVMgold.so";
+   CmdArgs.push_back(Args.MakeArgString(Plugin));
+ 
+   // Try to pass driver level flags relevant to LTO code generation down to
+diff --git a/tools/clang/tools/scan-build/scan-build b/tools/clang/tools/scan-build/scan-build
+index 0f119f6..58f78d9 100755
+--- a/tools/clang/tools/scan-build/scan-build
++++ b/tools/clang/tools/scan-build/scan-build
+@@ -419,7 +419,7 @@
+
+   my $Dir = shift;
+
+-  my $JS = Cwd::realpath("$RealBin/sorttable.js");
++  my $JS = Cwd::realpath("@EPREFIX@/usr/share/llvm/sorttable.js");
+
+   DieDiag("Cannot find 'sorttable.js'.\n")
+     if (! -r $JS);
+@@ -429,7 +429,7 @@
+   DieDiag("Could not copy 'sorttable.js' to '$Dir'.\n")
+     if (! -r "$Dir/sorttable.js");
+
+-  my $CSS = Cwd::realpath("$RealBin/scanview.css");
++  my $CSS = Cwd::realpath("@EPREFIX@/usr/share/llvm/scanview.css");
+
+   DieDiag("Cannot find 'scanview.css'.\n")
+     if (! -r $CSS);
+diff --git a/tools/clang/tools/scan-view/scan-view b/tools/clang/tools/scan-view/scan-view
+index fb27da6..1f8ddb8 100755
+--- a/tools/clang/tools/scan-view/scan-view
++++ b/tools/clang/tools/scan-view/scan-view
+@@ -54,7 +54,7 @@ def start_browser(port, options):
+     webbrowser.open(url)
+ 
+ def run(port, options, root):
+-    import ScanView
++    from clang import ScanView
+     try:
+         print 'Starting scan-view at: http://%s:%d'%(options.host,
+                                                      port)
+-- 
+1.8.4.4
+

diff --git a/sys-devel/llvm/files/clang-3.5-gentoo-runtime-gcc-detection-v3.patch b/sys-devel/llvm/files/clang-3.5-gentoo-runtime-gcc-detection-v3.patch
new file mode 100644
index 0000000..1f81af0
--- /dev/null
+++ b/sys-devel/llvm/files/clang-3.5-gentoo-runtime-gcc-detection-v3.patch
@@ -0,0 +1,42 @@
+From 916572e1243633ddf913c8f32771a3a7f70fd853 Mon Sep 17 00:00:00 2001
+From: =?UTF-8?q?Micha=C5=82=20G=C3=B3rny?= <mgorny@g.o>
+Date: Fri, 5 Sep 2014 16:49:35 +0200
+Subject: [PATCH] Support obtaining active toolchain from gcc-config.
+
+---
+ tools/clang/lib/Driver/ToolChains.cpp | 19 +++++++++++++++++++
+ 1 file changed, 19 insertions(+)
+
+diff --git a/tools/clang/lib/Driver/ToolChains.cpp b/tools/clang/lib/Driver/ToolChains.cpp
+index b46f69d..2d4374d 100644
+--- a/tools/clang/lib/Driver/ToolChains.cpp
++++ b/tools/clang/lib/Driver/ToolChains.cpp
+@@ -1253,6 +1253,25 @@ Generic_GCC::GCCInstallationDetector::init(
+       Prefixes.push_back("/usr");
+   }
+ 
++  for (unsigned k = 0, ke = CandidateTripleAliases.size(); k < ke; ++k) {
++    llvm::ErrorOr<std::unique_ptr<llvm::MemoryBuffer>> File =
++        llvm::MemoryBuffer::getFile(D.SysRoot + "/etc/env.d/gcc/config-" + CandidateTripleAliases[k].str());
++    if (File)
++    {
++      const std::string VersionText = File.get()->getBuffer().rsplit('-').second.substr(0,5).str();
++      const std::string GentooPath = D.SysRoot + "/usr/lib/gcc/" + CandidateTripleAliases[k].str() + "/" + VersionText;
++      if (llvm::sys::fs::exists(GentooPath + "/crtbegin.o"))
++      {
++        Version = GCCVersion::Parse(VersionText);
++        GCCInstallPath = GentooPath;
++        GCCParentLibPath = GCCInstallPath + "/../../..";
++        GCCTriple.setTriple(CandidateTripleAliases[k]);
++        IsValid = true;
++        return;
++      }
++    }
++  }
++
+   // Loop over the various components which exist and select the best GCC
+   // installation available. GCC installs are ranked by version number.
+   Version = GCCVersion::Parse("0.0.0");
+-- 
+2.1.0
+

diff --git a/sys-devel/llvm/files/llvm-3.2-nodoctargz.patch b/sys-devel/llvm/files/llvm-3.2-nodoctargz.patch
new file mode 100644
index 0000000..3a622b5
--- /dev/null
+++ b/sys-devel/llvm/files/llvm-3.2-nodoctargz.patch
@@ -0,0 +1,45 @@
+--- docs/Makefile.orig	2012-04-30 17:00:01.000000000 +0200
++++ docs/Makefile	2012-04-30 17:15:52.000000000 +0200
+@@ -52,11 +52,10 @@
+ # 'make generated BUILD_FOR_WEBSITE=1'
+ generated:: $(generated_targets)
+ 
+-install-html: $(PROJ_OBJ_DIR)/html.tar.gz
++install-html:
+ 	$(Echo) Installing HTML documentation
+ 	$(Verb) $(MKDIR) $(DESTDIR)$(PROJ_docsdir)/html
+ 	$(Verb) $(DataInstall) $(HTML) $(DESTDIR)$(PROJ_docsdir)/html
+-	$(Verb) $(DataInstall) $(PROJ_OBJ_DIR)/html.tar.gz $(DESTDIR)$(PROJ_docsdir)
+ 
+ $(PROJ_OBJ_DIR)/html.tar.gz: $(HTML)
+ 	$(Echo) Packaging HTML documentation
+@@ -68,12 +67,11 @@
+ install-doxygen: doxygen
+ 	$(Echo) Installing doxygen documentation
+ 	$(Verb) $(MKDIR) $(DESTDIR)$(PROJ_docsdir)/html/doxygen
+-	$(Verb) $(DataInstall) $(PROJ_OBJ_DIR)/doxygen.tar.gz $(DESTDIR)$(PROJ_docsdir)
+ 	$(Verb) cd $(PROJ_OBJ_DIR)/doxygen && \
+ 	  $(FIND) . -type f -exec \
+ 	    $(DataInstall) {} $(DESTDIR)$(PROJ_docsdir)/html/doxygen \;
+ 
+-doxygen: regendoc $(PROJ_OBJ_DIR)/doxygen.tar.gz
++doxygen: regendoc
+ 
+ regendoc:
+ 	$(Echo) Building doxygen documentation
+@@ -99,7 +97,6 @@
+ install-ocamldoc: ocamldoc
+ 	$(Echo) Installing ocamldoc documentation
+ 	$(Verb) $(MKDIR) $(DESTDIR)$(PROJ_docsdir)/ocamldoc/html
+-	$(Verb) $(DataInstall) $(PROJ_OBJ_DIR)/ocamldoc.tar.gz $(DESTDIR)$(PROJ_docsdir)
+ 	$(Verb) cd $(PROJ_OBJ_DIR)/ocamldoc && \
+ 	  $(FIND) . -type f -exec \
+ 	    $(DataInstall) {} $(DESTDIR)$(PROJ_docsdir)/ocamldoc/html \;
+@@ -109,7 +106,6 @@
+ 	$(Verb) $(RM) -rf $(PROJ_OBJ_DIR)/ocamldoc.tar*
+ 	$(Verb) $(TAR) cf $(PROJ_OBJ_DIR)/ocamldoc.tar ocamldoc
+ 	$(Verb) $(GZIPBIN) $(PROJ_OBJ_DIR)/ocamldoc.tar
+-	$(Verb) $(CP) $(PROJ_OBJ_DIR)/ocamldoc.tar.gz $(PROJ_OBJ_DIR)/ocamldoc/html/
+ 
+ regen-ocamldoc:
+ 	$(Echo) Building ocamldoc documentation

diff --git a/sys-devel/llvm/files/llvm-3.5-gcc-4.9.patch b/sys-devel/llvm/files/llvm-3.5-gcc-4.9.patch
new file mode 100644
index 0000000..7da657f
--- /dev/null
+++ b/sys-devel/llvm/files/llvm-3.5-gcc-4.9.patch
@@ -0,0 +1,43 @@
+commit 080fb498017d17af2e4d7563608c7d8a848f20da
+Author: Sanjoy Das <sanjoy at azulsystems.com>
+Date:   Thu Jun 19 15:38:02 2014 -0700
+
+    Fix the --enable-shared build.
+    
+    Currently a build configured with ./configure --enable-shared breaks
+    with an undefined "llvm::cl::parser<llvm::PassInfo
+    const*>::getOption(unsigned int) const" symbol when linking opt.  This
+    body for this symbol gets emitted into Pass.o (along with the destructor
+    for PassNameParser), but gets linked into libLLVM-3.5svn.so with local
+    visibility, causing the link error.
+    
+    This fix uses the existing EXTERN_TEMPLATE machinery to force a globally
+    visible definition for the functions in parser<const PassInfo *> into
+    Pass.o.
+
+diff --git a/include/llvm/IR/LegacyPassNameParser.h b/include/llvm/IR/LegacyPassNameParser.h
+index e2e4912..a07e3fd 100644
+--- a/include/llvm/IR/LegacyPassNameParser.h
++++ b/include/llvm/IR/LegacyPassNameParser.h
+@@ -95,6 +95,8 @@ private:
+   }
+ };
+ 
++EXTERN_TEMPLATE_INSTANTIATION(class cl::parser<const PassInfo *>);
++
+ ///===----------------------------------------------------------------------===//
+ /// FilteredPassNameParser class - Make use of the pass registration
+ /// mechanism to automatically add a command line argument to opt for
+diff --git a/lib/IR/Pass.cpp b/lib/IR/Pass.cpp
+index 91d86ae..00ce223 100644
+--- a/lib/IR/Pass.cpp
++++ b/lib/IR/Pass.cpp
+@@ -234,6 +234,8 @@ PassNameParser::~PassNameParser() {
+   // attempting to remove the registration listener is an error.
+ }
+ 
++TEMPLATE_INSTANTIATION(class cl::parser<const PassInfo *>);
++
+ //===----------------------------------------------------------------------===//
+ //   AnalysisUsage Class Implementation
+ //

diff --git a/sys-devel/llvm/files/llvm-3.5-gentoo-install.patch b/sys-devel/llvm/files/llvm-3.5-gentoo-install.patch
new file mode 100644
index 0000000..7a8c9f7
--- /dev/null
+++ b/sys-devel/llvm/files/llvm-3.5-gentoo-install.patch
@@ -0,0 +1,83 @@
+From b8846d389ff5e2b768a114f752cf39788accba26 Mon Sep 17 00:00:00 2001
+From: =?UTF-8?q?Micha=C5=82=20G=C3=B3rny?= <mgorny@g.o>
+Date: Mon, 19 Aug 2013 13:22:46 +0200
+Subject: [PATCH] gentoo install fixes
+
+---
+ Makefile.config.in                      | 6 +++---
+ Makefile.rules                          | 6 +++---
+ tools/llvm-config/BuildVariables.inc.in | 2 ++
+ tools/llvm-config/Makefile              | 4 ++++
+ tools/llvm-config/llvm-config.cpp       | 5 +++--
+ utils/FileCheck/Makefile                | 2 +-
+ 7 files changed, 17 insertions(+), 10 deletions(-)
+
+diff --git a/Makefile.config.in b/Makefile.config.in
+index dcca45f..e75ae2e 100644
+--- a/Makefile.config.in
++++ b/Makefile.config.in
+@@ -95,10 +95,10 @@ PROJ_internal_prefix := $(prefix)
+ endif
+ 
+ PROJ_bindir     := $(PROJ_prefix)/bin
+-PROJ_libdir     := $(PROJ_prefix)/lib
++PROJ_libdir     := $(PROJ_prefix)/$(GENTOO_LIBDIR)
+ PROJ_datadir    := $(PROJ_prefix)/share
+-PROJ_docsdir    := $(PROJ_prefix)/docs/llvm
+-PROJ_etcdir     := $(PROJ_prefix)/etc/llvm
++PROJ_docsdir    := $(PROJ_prefix)/share/doc/@PF@
++PROJ_etcdir     := @EPREFIX@/etc/llvm
+ PROJ_includedir := $(PROJ_prefix)/include
+ PROJ_infodir    := $(PROJ_prefix)/info
+ PROJ_mandir     := $(PROJ_prefix)/share/man
+diff --git a/Makefile.rules b/Makefile.rules
+index e53598b..217f754 100644
+--- a/Makefile.rules
++++ b/Makefile.rules
+@@ -275,7 +275,7 @@ ifeq ($(ENABLE_OPTIMIZED),1)
+   BuildMode := Release
+   # Don't use -fomit-frame-pointer on Darwin or FreeBSD.
+   ifneq ($(HOST_OS), $(filter $(HOST_OS), Cygwin Darwin DragonFly FreeBSD GNU/kFreeBSD))
+-    OmitFramePointer := -fomit-frame-pointer
++    OmitFramePointer :=
+   endif
+ 
+   CXX.Flags += $(OPTIMIZE_OPTION) $(OmitFramePointer)
+diff --git a/tools/llvm-config/BuildVariables.inc.in b/tools/llvm-config/BuildVariables.inc.in
+index fe87afb..fd9f2c6 100644
+--- a/tools/llvm-config/BuildVariables.inc.in
++++ b/tools/llvm-config/BuildVariables.inc.in
+@@ -25,3 +25,4 @@
+ #define LLVM_BUILDMODE "@LLVM_BUILDMODE@"
+ #define LLVM_TARGETS_BUILT "@LLVM_TARGETS_BUILT@"
+ #define LLVM_SYSTEM_LIBS "@LLVM_SYSTEM_LIBS@"
++#define LLVM_LIBDIR "@LLVM_LIBDIR@"
+diff --git a/tools/llvm-config/Makefile b/tools/llvm-config/Makefile
+index b20b6bf..fc56781 100644
+--- a/tools/llvm-config/Makefile
++++ b/tools/llvm-config/Makefile
+@@ -55,6 +55,8 @@ $(ObjDir)/BuildVariables.inc: $(BUILDVARIABLES_SRCPATH) Makefile $(ObjDir)/.dir
+ 	  >> temp.sed
+ 	$(Verb) $(ECHO) 's/@LLVM_TARGETS_BUILT@/$(subst /,\/,$(TARGETS_TO_BUILD))/' \
+ 	  >> temp.sed
++	$(Verb) $(ECHO) 's/@LLVM_LIBDIR@/$(subst /,\/,$(GENTOO_LIBDIR))/' \
++	  >> temp.sed
+ 	$(Verb) $(SED) -f temp.sed < $< > $@
+ 	$(Verb) $(RM) temp.sed
+ 
+diff --git a/tools/llvm-config/llvm-config.cpp b/tools/llvm-config/llvm-config.cpp
+index 3924e2e..f439c60 100644
+--- a/tools/llvm-config/llvm-config.cpp
++++ b/tools/llvm-config/llvm-config.cpp
+@@ -250,7 +250,7 @@ int main(int argc, char **argv) {
+     ActivePrefix = CurrentExecPrefix;
+     ActiveIncludeDir = ActivePrefix + "/include";
+     ActiveBinDir = ActivePrefix + "/bin";
+-    ActiveLibDir = ActivePrefix + "/lib";
++    ActiveLibDir = ActivePrefix + "/" LLVM_LIBDIR;
+     ActiveIncludeOption = "-I" + ActiveIncludeDir;
+   }
+ 
+-- 
+1.8.4.2
+

diff --git a/sys-devel/llvm/files/llvm-3.5-musl-compiler-rt.patch b/sys-devel/llvm/files/llvm-3.5-musl-compiler-rt.patch
new file mode 100644
index 0000000..b1646b8
--- /dev/null
+++ b/sys-devel/llvm/files/llvm-3.5-musl-compiler-rt.patch
@@ -0,0 +1,58 @@
+diff -ur a/llvm-3.5.0.src/projects/compiler-rt/lib/Makefile.mk b/llvm-3.5.0.src/projects/compiler-rt/lib/Makefile.mk
+--- a/llvm-3.5.0.src/projects/compiler-rt/lib/Makefile.mk	2014-02-14 10:20:33.000000000 -0100
++++ b/llvm-3.5.0.src/projects/compiler-rt/lib/Makefile.mk	2015-01-07 13:56:00.362944069 -0100
+@@ -10,13 +10,13 @@
+ SubDirs :=
+ 
+ # Add submodules.
+-SubDirs += asan
++#SubDirs += asan
+ SubDirs += builtins
+-SubDirs += dfsan
++#SubDirs += dfsan
+ SubDirs += interception
+-SubDirs += lsan
+-SubDirs += msan
++#SubDirs += lsan
++#SubDirs += msan
+ SubDirs += profile
+-SubDirs += sanitizer_common
+-SubDirs += tsan
+-SubDirs += ubsan
++#SubDirs += sanitizer_common
++#SubDirs += tsan
++#SubDirs += ubsan
+diff -ur a/llvm-3.5.0.src/projects/compiler-rt/lib/interception/interception_linux.cc b/llvm-3.5.0.src/projects/compiler-rt/lib/interception/interception_linux.cc
+--- a/llvm-3.5.0.src/projects/compiler-rt/lib/interception/interception_linux.cc	2014-02-24 09:37:41.000000000 -0100
++++ b/llvm-3.5.0.src/projects/compiler-rt/lib/interception/interception_linux.cc	2015-01-07 13:56:56.609240893 -0100
+@@ -24,12 +24,6 @@
+   return real == wrapper;
+ }
+ 
+-#if !defined(__ANDROID__)  // android does not have dlvsym
+-void *GetFuncAddrVer(const char *func_name, const char *ver) {
+-  return dlvsym(RTLD_NEXT, func_name, ver);
+-}
+-#endif  // !defined(__ANDROID__)
+-
+ }  // namespace __interception
+ 
+ 
+diff -ur a/llvm-3.5.0.src/projects/compiler-rt/lib/interception/interception_linux.h b/llvm-3.5.0.src/projects/compiler-rt/lib/interception/interception_linux.h
+--- a/llvm-3.5.0.src/projects/compiler-rt/lib/interception/interception_linux.h	2014-02-24 09:37:41.000000000 -0100
++++ b/llvm-3.5.0.src/projects/compiler-rt/lib/interception/interception_linux.h	2015-01-07 13:56:41.617428317 -0100
+@@ -34,14 +34,8 @@
+       (::__interception::uptr) & (func),                                   \
+       (::__interception::uptr) & WRAP(func))
+ 
+-#if !defined(__ANDROID__)  // android does not have dlvsym
+-# define INTERCEPT_FUNCTION_VER_LINUX_OR_FREEBSD(func, symver) \
+-     ::__interception::real_##func = (func##_f)(unsigned long) \
+-         ::__interception::GetFuncAddrVer(#func, symver)
+-#else
+ # define INTERCEPT_FUNCTION_VER_LINUX_OR_FREEBSD(func, symver) \
+      INTERCEPT_FUNCTION_LINUX_OR_FREEBSD(func)
+-#endif  // !defined(__ANDROID__)
+ 
+ #endif  // INTERCEPTION_LINUX_H
+ #endif  // __linux__ || __FreeBSD__

diff --git a/sys-devel/llvm/files/llvm-3.5-musl-fixes.patch b/sys-devel/llvm/files/llvm-3.5-musl-fixes.patch
new file mode 100644
index 0000000..98d6133
--- /dev/null
+++ b/sys-devel/llvm/files/llvm-3.5-musl-fixes.patch
@@ -0,0 +1,77 @@
+llvm-musl.patch from alpine linux
+
+diff -ru llvm-3.5.0.src.orig/include/llvm/Target/TargetLibraryInfo.h llvm-3.5.0.src/include/llvm/Target/TargetLibraryInfo.h
+--- llvm-3.5.0.src.orig/include/llvm/Target/TargetLibraryInfo.h	2014-11-13 12:51:53.341455401 +0000
++++ llvm-3.5.0.src/include/llvm/Target/TargetLibraryInfo.h	2014-11-13 12:52:35.078889077 +0000
+@@ -13,6 +13,15 @@
+ #include "llvm/ADT/DenseMap.h"
+ #include "llvm/Pass.h"
+ 
++#undef fopen64
++#undef fseeko64
++#undef fstat64
++#undef fstatvfs64
++#undef ftello64
++#undef lstat64
++#undef stat64
++#undef tmpfile64
++
+ namespace llvm {
+   class Triple;
+ 
+diff -ru llvm-3.5.0.src.orig/lib/Support/DynamicLibrary.cpp llvm-3.5.0.src/lib/Support/DynamicLibrary.cpp
+--- llvm-3.5.0.src.orig/lib/Support/DynamicLibrary.cpp	2014-11-13 12:51:53.341455401 +0000
++++ llvm-3.5.0.src/lib/Support/DynamicLibrary.cpp	2014-11-13 12:52:07.781720766 +0000
+@@ -138,7 +138,7 @@
+ 
+ // This macro returns the address of a well-known, explicit symbol
+ #define EXPLICIT_SYMBOL(SYM) \
+-   if (!strcmp(symbolName, #SYM)) return &SYM
++   if (!strcmp(symbolName, #SYM)) return (void *) &SYM
+ 
+ // On linux we have a weird situation. The stderr/out/in symbols are both
+ // macros and global variables because of standards requirements. So, we
+diff -ru llvm-3.5.0.src.orig/lib/Support/Unix/Signals.inc llvm-3.5.0.src/lib/Support/Unix/Signals.inc
+--- llvm-3.5.0.src.orig/lib/Support/Unix/Signals.inc	2014-11-13 12:51:53.341455401 +0000
++++ llvm-3.5.0.src/lib/Support/Unix/Signals.inc	2014-11-13 12:52:07.781720766 +0000
+@@ -266,7 +266,7 @@
+ // On glibc systems we have the 'backtrace' function, which works nicely, but
+ // doesn't demangle symbols.
+ void llvm::sys::PrintStackTrace(FILE *FD) {
+-#if defined(HAVE_BACKTRACE) && defined(ENABLE_BACKTRACES)
++#if defined(__GLIBC__) && defined(HAVE_BACKTRACE) && defined(ENABLE_BACKTRACES)
+   static void* StackTrace[256];
+   // Use backtrace() to output a backtrace on Linux systems with glibc.
+   int depth = backtrace(StackTrace,
+diff -ru llvm-3.5.0.src.orig/lib/Target/TargetLibraryInfo.cpp llvm-3.5.0.src/lib/Target/TargetLibraryInfo.cpp
+--- llvm-3.5.0.src.orig/lib/Target/TargetLibraryInfo.cpp	2014-11-13 12:51:53.341455401 +0000
++++ llvm-3.5.0.src/lib/Target/TargetLibraryInfo.cpp	2014-11-13 12:52:07.785054160 +0000
+@@ -653,14 +653,15 @@
+   }
+ 
+   // The following functions are available on at least Linux:
+-  if (!T.isOSLinux()) {
++  if (!T.isOSLinux())
++    TLI.setUnavailable(LibFunc::memalign);
++  if (1 /*!T.isGlibc()*/) {
+     TLI.setUnavailable(LibFunc::dunder_strdup);
+     TLI.setUnavailable(LibFunc::dunder_strtok_r);
+     TLI.setUnavailable(LibFunc::dunder_isoc99_scanf);
+     TLI.setUnavailable(LibFunc::dunder_isoc99_sscanf);
+     TLI.setUnavailable(LibFunc::under_IO_getc);
+     TLI.setUnavailable(LibFunc::under_IO_putc);
+-    TLI.setUnavailable(LibFunc::memalign);
+     TLI.setUnavailable(LibFunc::fopen64);
+     TLI.setUnavailable(LibFunc::fseeko64);
+     TLI.setUnavailable(LibFunc::fstat64);
+diff -ru llvm-3.5.0.src.orig/utils/unittest/googletest/src/gtest.cc llvm-3.5.0.src/utils/unittest/googletest/src/gtest.cc
+--- llvm-3.5.0.src.orig/utils/unittest/googletest/src/gtest.cc	2014-11-13 12:51:53.341455401 +0000
++++ llvm-3.5.0.src/utils/unittest/googletest/src/gtest.cc	2014-11-13 12:52:07.785054160 +0000
+@@ -120,6 +120,7 @@
+ 
+ #if GTEST_CAN_STREAM_RESULTS_
+ # include <arpa/inet.h>  // NOLINT
++# include <sys/socket.h>  // NOLINT
+ # include <netdb.h>  // NOLINT
+ #endif
+ 

diff --git a/sys-devel/llvm/files/llvm-3.5-musl-support.patch b/sys-devel/llvm/files/llvm-3.5-musl-support.patch
new file mode 100644
index 0000000..be92809
--- /dev/null
+++ b/sys-devel/llvm/files/llvm-3.5-musl-support.patch
@@ -0,0 +1,124 @@
+adapted from llvm-alpine-linux.patch from Alpine
+
+diff -ru llvm-3.5.0.src.orig/include/llvm/ADT/Triple.h llvm-3.5.0.src/include/llvm/ADT/Triple.h
+--- llvm-3.5.0.src.orig/include/llvm/ADT/Triple.h	2014-07-18 17:28:19.000000000 -0300
++++ llvm-3.5.0.src/include/llvm/ADT/Triple.h	2014-11-12 14:44:41.738448045 -0200
+@@ -149,6 +149,10 @@
+     EABIHF,
+     Android,
+ 
++    Musl,
++    MuslEABI,
++    MuslEABIHF,
++
+     MSVC,
+     Itanium,
+     Cygnus,
+Only in llvm-3.5.0.src/include/llvm/ADT: Triple.h.orig
+diff -ru llvm-3.5.0.src.orig/lib/Support/Triple.cpp llvm-3.5.0.src/lib/Support/Triple.cpp
+--- llvm-3.5.0.src.orig/lib/Support/Triple.cpp	2014-07-18 17:28:19.000000000 -0300
++++ llvm-3.5.0.src/lib/Support/Triple.cpp	2014-11-12 14:47:06.565122146 -0200
+@@ -168,6 +168,9 @@
+   case CODE16: return "code16";
+   case EABI: return "eabi";
+   case EABIHF: return "eabihf";
++  case Musl: return "musl";
++  case MuslEABI: return "musleabi";
++  case MuslEABIHF: return "musleabihf";
+   case Android: return "android";
+   case MSVC: return "msvc";
+   case Itanium: return "itanium";
+@@ -344,6 +347,9 @@
+     .StartsWith("gnux32", Triple::GNUX32)
+     .StartsWith("code16", Triple::CODE16)
+     .StartsWith("gnu", Triple::GNU)
++    .StartsWith("musl", Triple::Musl)
++    .StartsWith("musleabi", Triple::MuslEABI)
++    .StartsWith("musleabihf", Triple::MuslEABIHF)
+     .StartsWith("android", Triple::Android)
+     .StartsWith("msvc", Triple::MSVC)
+     .StartsWith("itanium", Triple::Itanium)
+Only in llvm-3.5.0.src/lib/Support: Triple.cpp.orig
+diff -ru llvm-3.5.0.src.orig/lib/Target/ARM/ARMSubtarget.cpp llvm-3.5.0.src/lib/Target/ARM/ARMSubtarget.cpp
+--- llvm-3.5.0.src.orig/lib/Target/ARM/ARMSubtarget.cpp	2014-07-16 23:13:31.000000000 -0300
++++ llvm-3.5.0.src/lib/Target/ARM/ARMSubtarget.cpp	2014-11-12 14:50:40.025133104 -0200
+@@ -273,6 +273,8 @@
+     case Triple::EABIHF:
+     case Triple::GNUEABI:
+     case Triple::GNUEABIHF:
++    case Triple::MuslEABI:
++    case Triple::MuslEABIHF:
+       TargetABI = ARM_ABI_AAPCS;
+       break;
+     default:
+diff -ru llvm-3.5.0.src.orig/lib/Target/ARM/ARMSubtarget.h llvm-3.5.0.src/lib/Target/ARM/ARMSubtarget.h
+--- llvm-3.5.0.src.orig/lib/Target/ARM/ARMSubtarget.h	2014-07-16 23:13:31.000000000 -0300
++++ llvm-3.5.0.src/lib/Target/ARM/ARMSubtarget.h	2014-11-12 14:53:36.571808822 -0200
+@@ -372,8 +372,10 @@
+   bool isTargetEHABICompatible() const {
+     return (TargetTriple.getEnvironment() == Triple::EABI ||
+             TargetTriple.getEnvironment() == Triple::GNUEABI ||
++            TargetTriple.getEnvironment() == Triple::MuslEABI ||
+             TargetTriple.getEnvironment() == Triple::EABIHF ||
+             TargetTriple.getEnvironment() == Triple::GNUEABIHF ||
++            TargetTriple.getEnvironment() == Triple::MuslEABIHF ||
+             TargetTriple.getEnvironment() == Triple::Android) &&
+            !isTargetDarwin() && !isTargetWindows();
+   }
+diff -ru llvm-3.5.0.src.orig/tools/clang/lib/Driver/Tools.cpp llvm-3.5.0.src/tools/clang/lib/Driver/Tools.cpp
+--- llvm-3.5.0.src.orig/tools/clang/lib/Driver/Tools.cpp	2014-08-07 07:51:51.000000000 -0300
++++ llvm-3.5.0.src/tools/clang/lib/Driver/Tools.cpp	2014-11-12 15:11:31.901864030 -0200
+@@ -7182,8 +7182,14 @@
+       return "/system/bin/linker64";
+     else
+       return "/system/bin/linker";
+-  } else if (ToolChain.getArch() == llvm::Triple::x86 ||
+-             ToolChain.getArch() == llvm::Triple::sparc)
++  } else if (ToolChain.getArch() == llvm::Triple::x86) {
++    switch (ToolChain.getTriple().getEnvironment()) {
++    case llvm::Triple::Musl:
++      return "/lib/ld-musl-i386.so.1";
++    default:
++      return "/lib/ld-linux.so.2";
++    }
++  } else if (ToolChain.getArch() == llvm::Triple::sparc)
+     return "/lib/ld-linux.so.2";
+   else if (ToolChain.getArch() == llvm::Triple::aarch64 ||
+            ToolChain.getArch() == llvm::Triple::arm64)
+@@ -7193,10 +7199,17 @@
+     return "/lib/ld-linux-aarch64_be.so.1";
+   else if (ToolChain.getArch() == llvm::Triple::arm ||
+            ToolChain.getArch() == llvm::Triple::thumb) {
+-    if (ToolChain.getTriple().getEnvironment() == llvm::Triple::GNUEABIHF)
++    switch (ToolChain.getTriple().getEnvironment()) {
++    case llvm::Triple::Musl:
++    case llvm::Triple::MuslEABI:
++      return "/lib/ld-musl-arm.so.3";
++    case llvm::Triple::MuslEABIHF:
++      return "/lib/ld-musl-armhf.so.3";
++    case llvm::Triple::GNUEABIHF:
+       return "/lib/ld-linux-armhf.so.3";
+-    else
++    default:
+       return "/lib/ld-linux.so.3";
++    }
+   } else if (ToolChain.getArch() == llvm::Triple::armeb ||
+              ToolChain.getArch() == llvm::Triple::thumbeb) {
+     if (ToolChain.getTriple().getEnvironment() == llvm::Triple::GNUEABIHF)
+@@ -7227,8 +7240,14 @@
+   else if (ToolChain.getArch() == llvm::Triple::x86_64 &&
+            ToolChain.getTriple().getEnvironment() == llvm::Triple::GNUX32)
+     return "/libx32/ld-linux-x32.so.2";
+-  else
+-    return "/lib64/ld-linux-x86-64.so.2";
++  else {
++    switch (ToolChain.getTriple().getEnvironment()) {
++    case llvm::Triple::Musl:
++      return "/lib/ld-musl-x86_64.so.1";
++    default:
++      return "/lib64/ld-linux-x86-64.so.2";
++    }
++  }
+ }
+ 
+ static void AddRunTimeLibs(const ToolChain &TC, const Driver &D,

diff --git a/sys-devel/llvm/files/llvm-3.5.0-fix_LLVMExports_cmake.patch b/sys-devel/llvm/files/llvm-3.5.0-fix_LLVMExports_cmake.patch
new file mode 100644
index 0000000..9fbd7b7
--- /dev/null
+++ b/sys-devel/llvm/files/llvm-3.5.0-fix_LLVMExports_cmake.patch
@@ -0,0 +1,39 @@
+Index: cmake/modules/Makefile
+===================================================================
+--- cmake/modules/Makefile	(revision 217451)
++++ cmake/modules/Makefile	(working copy)
+@@ -33,6 +33,16 @@
+ 	LLVM_ENABLE_RTTI := 0
+ endif
+ 
++LLVM_LIBS_TO_EXPORT := $(subst -l,,$(shell $(LLVM_CONFIG) --libs $(LINK_COMPONENTS) || echo Error))
++
++ifeq ($(LLVM_LIBS_TO_EXPORT),Error)
++$(error llvm-config --libs failed)
++endif
++
++ifndef LLVM_LIBS_TO_EXPORT
++$(error LLVM_LIBS_TO_EXPORT cannot be empty)
++endif
++
+ OBJMODS := LLVMConfig.cmake LLVMConfigVersion.cmake LLVMExports.cmake
+ 
+ $(PROJ_OBJ_DIR)/LLVMConfig.cmake: LLVMConfig.cmake.in $(LLVMBuildCMakeFrag)
+@@ -45,7 +55,7 @@
+ 	  -e 's/@LLVM_VERSION_PATCH@/'"$(LLVM_VERSION_PATCH)"'/' \
+ 	  -e 's/@PACKAGE_VERSION@/'"$(LLVMVersion)"'/' \
+ 	  -e 's/@LLVM_COMMON_DEPENDS@//' \
+-	  -e 's/@LLVM_AVAILABLE_LIBS@/'"$(subst -l,,$(LLVMConfigLibs))"'/' \
++	  -e 's/@LLVM_AVAILABLE_LIBS@/'"$(LLVM_LIBS_TO_EXPORT)"'/' \
+ 	  -e 's/@LLVM_ALL_TARGETS@/'"$(ALL_TARGETS)"'/' \
+ 	  -e 's/@LLVM_TARGETS_TO_BUILD@/'"$(TARGETS_TO_BUILD)"'/' \
+ 	  -e 's/@LLVM_TARGETS_WITH_JIT@/'"$(TARGETS_WITH_JIT)"'/' \
+@@ -83,7 +93,7 @@
+ 	$(Echo) 'Generating LLVM CMake target exports file'
+ 	$(Verb) ( \
+ 	  echo '# LLVM CMake target exports.  Do not include directly.' && \
+-	  for lib in $(subst -l,,$(LLVMConfigLibs)); do \
++	  for lib in $(LLVM_LIBS_TO_EXPORT); do \
+ 	    echo 'add_library('"$$lib"' STATIC IMPORTED)' && \
+ 	    echo 'set_property(TARGET '"$$lib"' PROPERTY IMPORTED_LOCATION "'"$(PROJ_libdir)/lib$$lib.a"'")' ; \
+ 	  done && \

diff --git a/sys-devel/llvm/llvm-3.5.0-r99.ebuild b/sys-devel/llvm/llvm-3.5.0-r99.ebuild
new file mode 100644
index 0000000..9db3f59
--- /dev/null
+++ b/sys-devel/llvm/llvm-3.5.0-r99.ebuild
@@ -0,0 +1,530 @@
+# Copyright 1999-2015 Gentoo Foundation
+# Distributed under the terms of the GNU General Public License v2
+# $Header: /var/cvsroot/gentoo-x86/sys-devel/llvm/llvm-3.5.0.ebuild,v 1.11 2015/01/01 20:53:32 maekke Exp $
+
+EAPI=5
+
+PYTHON_COMPAT=( python2_7 pypy )
+
+inherit eutils flag-o-matic multibuild multilib \
+	multilib-minimal python-r1 toolchain-funcs pax-utils check-reqs prefix
+
+DESCRIPTION="Low Level Virtual Machine"
+HOMEPAGE="http://llvm.org/"
+SRC_URI="http://llvm.org/releases/${PV}/${P}.src.tar.xz
+	clang? ( http://llvm.org/releases/${PV}/compiler-rt-${PV}.src.tar.xz
+		http://llvm.org/releases/${PV}/cfe-${PV}.src.tar.xz
+		http://llvm.org/releases/${PV}/clang-tools-extra-${PV}.src.tar.xz )
+	!doc? ( http://dev.gentoo.org/~voyageur/distfiles/${P}-manpages.tar.bz2 )"
+
+LICENSE="UoI-NCSA"
+SLOT="0/3.5"
+KEYWORDS="amd64 arm ppc x86"
+IUSE="clang debug doc gold libedit +libffi multitarget ncurses ocaml python
+	+static-analyzer test xml video_cards_radeon
+	kernel_Darwin kernel_FreeBSD"
+
+COMMON_DEPEND="
+	sys-libs/zlib:0=
+	clang? (
+		python? ( ${PYTHON_DEPS} )
+		static-analyzer? (
+			dev-lang/perl:*
+			${PYTHON_DEPS}
+		)
+		xml? ( dev-libs/libxml2:2= )
+	)
+	gold? ( >=sys-devel/binutils-2.22:*[cxx] )
+	libedit? ( dev-libs/libedit:0=[${MULTILIB_USEDEP}] )
+	libffi? ( >=virtual/libffi-3.0.13-r1:0=[${MULTILIB_USEDEP}] )
+	ncurses? ( >=sys-libs/ncurses-5.9-r3:5=[${MULTILIB_USEDEP}] )
+	ocaml? ( dev-lang/ocaml:0= )"
+# configparser-3.2 breaks the build (3.3 or none at all are fine)
+DEPEND="${COMMON_DEPEND}
+	app-arch/xz-utils
+	dev-lang/perl
+	>=sys-devel/make-3.81
+	>=sys-devel/flex-2.5.4
+	>=sys-devel/bison-1.875d
+	|| ( >=sys-devel/gcc-3.0 >=sys-devel/gcc-apple-4.2.1
+		( >=sys-freebsd/freebsd-lib-9.1-r10 sys-libs/libcxx )
+	)
+	|| ( >=sys-devel/binutils-2.18 >=sys-devel/binutils-apple-3.2.3 )
+	clang? ( xml? ( virtual/pkgconfig ) )
+	doc? ( dev-python/sphinx )
+	libffi? ( virtual/pkgconfig )
+	!!<dev-python/configparser-3.3.0.2
+	${PYTHON_DEPS}"
+RDEPEND="${COMMON_DEPEND}
+	clang? ( !<=sys-devel/clang-${PV}-r99
+		!>=sys-devel/clang-9999 )
+	abi_x86_32? ( !<=app-emulation/emul-linux-x86-baselibs-20130224-r2
+		!app-emulation/emul-linux-x86-baselibs[-abi_x86_32(-)] )"
+PDEPEND="clang? ( =sys-devel/clang-${PV}-r100 )"
+
+# pypy gives me around 1700 unresolved tests due to open file limit
+# being exceeded. probably GC does not close them fast enough.
+REQUIRED_USE="${PYTHON_REQUIRED_USE}
+	test? ( || ( $(python_gen_useflags 'python*') ) )"
+
+S=${WORKDIR}/${P}.src
+
+# Some people actually override that in make.conf. That sucks since
+# we need to run install per-directory, and ninja can't do that...
+# so why did it call itself ninja in the first place?
+CMAKE_MAKEFILE_GENERATOR=emake
+
+pkg_pretend() {
+	# in megs
+	# !clang !debug !multitarget -O2       400
+	# !clang !debug  multitarget -O2       550
+	#  clang !debug !multitarget -O2       950
+	#  clang !debug  multitarget -O2      1200
+	# !clang  debug  multitarget -O2      5G
+	#  clang !debug  multitarget -O0 -g  12G
+	#  clang  debug  multitarget -O2     16G
+	#  clang  debug  multitarget -O0 -g  14G
+
+	local build_size=550
+	use clang && build_size=1200
+
+	if use debug; then
+		ewarn "USE=debug is known to increase the size of package considerably"
+		ewarn "and cause the tests to fail."
+		ewarn
+
+		(( build_size *= 14 ))
+	elif is-flagq -g || is-flagq -ggdb; then
+		ewarn "The C++ compiler -g option is known to increase the size of the package"
+		ewarn "considerably. If you run out of space, please consider removing it."
+		ewarn
+
+		(( build_size *= 10 ))
+	fi
+
+	# Multiply by number of ABIs :).
+	local abis=( $(multilib_get_enabled_abis) )
+	(( build_size *= ${#abis[@]} ))
+
+	local CHECKREQS_DISK_BUILD=${build_size}M
+	check-reqs_pkg_pretend
+
+	if [[ ${MERGE_TYPE} != binary ]]; then
+		echo 'int main() {return 0;}' > "${T}"/test.cxx || die
+		ebegin "Trying to build a C++11 test program"
+		if ! $(tc-getCXX) -std=c++11 -o /dev/null "${T}"/test.cxx; then
+			eerror "LLVM-${PV} requires C++11-capable C++ compiler. Your current compiler"
+			eerror "does not seem to support -std=c++11 option. Please upgrade your compiler"
+			eerror "to gcc-4.7 or an equivalent version supporting C++11."
+			die "Currently active compiler does not support -std=c++11"
+		fi
+		eend ${?}
+	fi
+}
+
+pkg_setup() {
+	pkg_pretend
+}
+
+src_unpack() {
+	default
+
+	rm -f "${S}"/tools/clang "${S}"/projects/compiler-rt \
+		|| die "symlinks removal failed"
+
+	if use clang; then
+		mv "${WORKDIR}"/cfe-${PV}.src "${S}"/tools/clang \
+			|| die "clang source directory move failed"
+		mv "${WORKDIR}"/compiler-rt-${PV}.src "${S}"/projects/compiler-rt \
+			|| die "compiler-rt source directory move failed"
+		mv "${WORKDIR}"/clang-tools-extra-${PV}.src "${S}"/tools/clang/tools/extra \
+			|| die "clang-tools-extra source directory move failed"
+	fi
+}
+
+src_prepare() {
+	epatch "${FILESDIR}"/${PN}-3.2-nodoctargz.patch
+	epatch "${FILESDIR}"/${PN}-3.5-gcc-4.9.patch
+	epatch "${FILESDIR}"/${PN}-3.5-gentoo-install.patch
+
+	epatch "${FILESDIR}"/${PN}-3.5-musl-fixes.patch
+	epatch "${FILESDIR}"/${PN}-3.5-musl-support.patch
+	epatch "${FILESDIR}"/${PN}-3.5-musl-compiler-rt.patch
+
+	epatch "${FILESDIR}"/${P}-fix_LLVMExports_cmake.patch
+
+	if use clang; then
+		# Automatically select active system GCC's libraries, bugs #406163 and #417913
+		epatch "${FILESDIR}"/clang-3.5-gentoo-runtime-gcc-detection-v3.patch
+
+		epatch "${FILESDIR}"/clang-3.5-gentoo-install.patch
+		epatch "${FILESDIR}"/clang-3.4-darwin_prefix-include-paths.patch
+		eprefixify tools/clang/lib/Frontend/InitHeaderSearch.cpp
+	fi
+
+	if use prefix && use clang; then
+		sed -i -e "/^CFLAGS /s@-Werror@-I${EPREFIX}/usr/include@" \
+			projects/compiler-rt/make/platform/clang_*.mk || die
+	fi
+
+	local sub_files=(
+		Makefile.config.in
+		Makefile.rules
+		tools/llvm-config/llvm-config.cpp
+	)
+	use clang && sub_files+=(
+		tools/clang/lib/Driver/Tools.cpp
+		tools/clang/tools/scan-build/scan-build
+	)
+
+	# unfortunately ./configure won't listen to --mandir and the-like, so take
+	# care of this.
+	# note: we're setting the main libdir intentionally.
+	# where per-ABI is appropriate, we use $(GENTOO_LIBDIR) make.
+	einfo "Fixing install dirs"
+	sed -e "s,@libdir@,$(get_libdir),g" \
+		-e "s,@PF@,${PF},g" \
+		-e "s,@EPREFIX@,${EPREFIX},g" \
+		-i "${sub_files[@]}" \
+		|| die "install paths sed failed"
+
+	if use clang; then
+		# constantly fails for a long time, likely due to our patches
+		rm tools/clang/test/Driver/cross-linux.c || die
+	fi
+
+	# User patches
+	epatch_user
+
+	python_setup
+}
+
+multilib_src_configure() {
+	# disable timestamps since they confuse ccache
+	local conf_flags=(
+		--disable-timestamps
+		--enable-keep-symbols
+		--enable-shared
+		--with-optimize-option=
+		$(tc-is-static-only && echo --disable-shared)
+		$(use_enable !debug optimized)
+		$(use_enable debug assertions)
+		$(use_enable debug expensive-checks)
+		$(use_enable libedit)
+		$(use_enable ncurses terminfo)
+		$(use_enable libffi)
+	)
+
+	# well, it's used only by clang executable c-index-test
+	if multilib_is_native_abi && use clang && use xml; then
+		conf_flags+=( XML2CONFIG="$(tc-getPKG_CONFIG) libxml-2.0" )
+	else
+		conf_flags+=( ac_cv_prog_XML2CONFIG="" )
+	fi
+
+	local targets bindings
+	if use multitarget; then
+		targets='all'
+	else
+		targets='host,cpp'
+		use video_cards_radeon && targets+=',r600'
+	fi
+	conf_flags+=( --enable-targets=${targets} )
+
+	if multilib_is_native_abi; then
+		use gold && conf_flags+=( --with-binutils-include="${EPREFIX}"/usr/include/ )
+		# extra commas don't hurt
+		use ocaml && bindings+=',ocaml'
+	fi
+
+	[[ ${bindings} ]] || bindings='none'
+	conf_flags+=( --enable-bindings=${bindings} )
+
+	if use libffi; then
+		local CPPFLAGS=${CPPFLAGS}
+		append-cppflags "$(pkg-config --cflags libffi)"
+	fi
+
+	# llvm prefers clang over gcc, so we may need to force that
+	tc-export CC CXX
+
+	ECONF_SOURCE=${S} \
+	econf "${conf_flags[@]}"
+}
+
+set_makeargs() {
+	MAKEARGS=(
+		VERBOSE=1
+		REQUIRES_RTTI=1
+		GENTOO_LIBDIR=$(get_libdir)
+	)
+
+	# for tests, we want it all! otherwise, we may use a little filtering...
+	# adding ONLY_TOOLS also disables unittest building...
+	if [[ ${EBUILD_PHASE_FUNC} != src_test ]]; then
+		local tools=( llvm-config )
+		use clang && tools+=( clang )
+
+		if multilib_is_native_abi; then
+			tools+=(
+				opt llvm-as llvm-dis llc llvm-ar llvm-nm llvm-link lli
+				llvm-extract llvm-mc llvm-bcanalyzer llvm-diff macho-dump
+				llvm-objdump llvm-readobj llvm-rtdyld llvm-dwarfdump llvm-cov
+				llvm-size llvm-stress llvm-mcmarkup llvm-profdata
+				llvm-symbolizer obj2yaml yaml2obj lto bugpoint
+			)
+
+			# the build system runs explicitly specified tools in parallel,
+			# so we need to split it into two runs
+			if [[ ${1} != -1 ]]; then
+				# those require lto
+				tools+=( llvm-lto )
+				use gold && tools+=( gold )
+
+				# those require clang :)
+				# we need to explicitly specify all its tools
+				# since we're passing BUILD_CLANG_ONLY
+				use clang && tools+=(
+					clang/tools/{clang-check,clang-format,extra}
+				)
+			fi
+		fi
+
+		MAKEARGS+=(
+			# filter tools + disable unittests implicitly
+			ONLY_TOOLS="${tools[*]}"
+
+			# this disables unittests & docs from clang
+			BUILD_CLANG_ONLY=YES
+		)
+	fi
+}
+
+multilib_src_compile() {
+	local MAKEARGS
+	set_makeargs -1
+	emake "${MAKEARGS[@]}"
+
+	if multilib_is_native_abi; then
+		set_makeargs
+		emake -C tools "${MAKEARGS[@]}"
+
+		if use doc; then
+			emake -C "${S}"/docs -f Makefile.sphinx man
+			use clang && emake -C "${S}"/tools/clang/docs/tools \
+				BUILD_FOR_WEBSITE=1 DST_MAN_DIR="${T}"/ man
+			emake -C "${S}"/docs -f Makefile.sphinx html
+		fi
+	fi
+
+	if use debug; then
+		pax-mark m Debug+Asserts+Checks/bin/llvm-rtdyld
+		pax-mark m Debug+Asserts+Checks/bin/lli
+		pax-mark m Debug+Asserts+Checks/bin/lli-child-target
+	else
+		pax-mark m Release/bin/llvm-rtdyld
+		pax-mark m Release/bin/lli
+		pax-mark m Release/bin/lli-child-target
+	fi
+}
+
+multilib_src_test() {
+	local MAKEARGS
+	set_makeargs
+
+	# build the remaining tools & unittests
+	emake "${MAKEARGS[@]}"
+
+	pax-mark m unittests/ExecutionEngine/JIT/Release/JITTests
+	pax-mark m unittests/ExecutionEngine/MCJIT/Release/MCJITTests
+	pax-mark m unittests/Support/Release/SupportTests
+
+	# respect TMPDIR!
+	local -x LIT_PRESERVES_TMP=1
+	emake "${MAKEARGS[@]}" check
+	use clang && emake "${MAKEARGS[@]}" -C tools/clang test
+}
+
+src_install() {
+	local MULTILIB_CHOST_TOOLS=(
+		/usr/bin/llvm-config
+	)
+
+	local MULTILIB_WRAPPED_HEADERS=(
+		/usr/include/llvm/Config/config.h
+		/usr/include/llvm/Config/llvm-config.h
+	)
+
+	if use clang; then
+		# note: magic applied below
+		MULTILIB_CHOST_TOOLS+=(
+			/usr/bin/clang
+			/usr/bin/clang++
+			/usr/bin/clang-${PV}
+			/usr/bin/clang++-${PV}
+		)
+
+		MULTILIB_WRAPPED_HEADERS+=(
+			/usr/include/clang/Config/config.h
+		)
+	fi
+
+	multilib-minimal_src_install
+
+	# Remove unnecessary headers on FreeBSD, bug #417171
+	use kernel_FreeBSD && use clang && rm "${ED}"usr/lib/clang/${PV}/include/{std,float,iso,limits,tgmath,varargs}*.h
+}
+
+multilib_src_install() {
+	local MAKEARGS
+	set_makeargs
+
+	local root=${D}/_${ABI}
+
+	emake "${MAKEARGS[@]}" DESTDIR="${root}" install
+	multibuild_merge_root "${root}" "${D}"
+
+	if ! multilib_is_native_abi; then
+		# Backwards compat, will be happily removed someday.
+		dosym "${CHOST}"-llvm-config /usr/bin/llvm-config.${ABI}
+	else
+		# Install docs.
+		if use doc; then
+			doman "${S}"/docs/_build/man/*.1
+			use clang && doman "${T}"/clang.1
+			dohtml -r "${S}"/docs/_build/html/
+		else
+			if ! use clang; then
+				rm "${WORKDIR}"/${P}-manpages/clang.1 || die
+			fi
+			doman "${WORKDIR}"/${P}-manpages/*.1
+		fi
+
+		# Symlink the gold plugin.
+		if use gold; then
+			dodir /usr/${CHOST}/binutils-bin/lib/bfd-plugins
+			dosym ../../../../$(get_libdir)/LLVMgold.so \
+				/usr/${CHOST}/binutils-bin/lib/bfd-plugins/LLVMgold.so
+		fi
+	fi
+
+	# apply CHOST and PV to clang executables
+	# they're statically linked so we don't have to worry about the lib
+	if use clang; then
+		local clang_tools=( clang clang++ )
+		local i
+
+		# append ${PV} and symlink back
+		# TODO: use alternatives.eclass? does that make any sense?
+		# maybe with USE=-clang on :0 and USE=clang on older
+		for i in "${clang_tools[@]}"; do
+			mv "${ED%/}/usr/bin/${i}"{,-${PV}} || die
+			dosym "${i}"-${PV} /usr/bin/${i}
+		done
+
+		# now prepend ${CHOST} and let the multilib-build.eclass symlink it
+		if ! multilib_is_native_abi; then
+			# non-native? let's replace it with a simple wrapper
+			for i in "${clang_tools[@]}"; do
+				rm "${ED%/}/usr/bin/${i}-${PV}" || die
+				cat > "${T}"/wrapper.tmp <<-_EOF_
+					#!${EPREFIX}/bin/sh
+					exec "${i}-${PV}" $(get_abi_CFLAGS) "\${@}"
+				_EOF_
+				newbin "${T}"/wrapper.tmp "${i}-${PV}"
+			done
+		fi
+	fi
+
+	# Fix install_names on Darwin.  The build system is too complicated
+	# to just fix this, so we correct it post-install
+	local lib= f= odylib= ndylib= libpv=${PV}
+	if [[ ${CHOST} == *-darwin* ]] ; then
+		eval $(grep PACKAGE_VERSION= configure)
+		[[ -n ${PACKAGE_VERSION} ]] && libpv=${PACKAGE_VERSION}
+		for lib in lib{EnhancedDisassembly,LLVM-${libpv},LTO,profile_rt,clang}.dylib LLVMHello.dylib clang/${libpv}/lib/darwin/libclang_rt.asan_osx_dynamic.dylib; do
+			# libEnhancedDisassembly is Darwin10 only, so non-fatal
+			# + omit clang libs if not enabled
+			[[ -f ${ED}/usr/lib/${lib} ]] || continue
+
+			ebegin "fixing install_name of $lib"
+			install_name_tool \
+				-id "${EPREFIX}"/usr/lib/${lib} \
+				"${ED}"/usr/lib/${lib}
+			eend $?
+		done
+		for f in "${ED}"/usr/bin/* "${ED}"/usr/lib/lib*.dylib "${ED}"/usr/lib/clang/${libpv}/lib/darwin/*.dylib ; do
+			# omit clang libs if not enabled
+			[[ -f ${ED}/usr/lib/${lib} ]] || continue
+
+			scanmacho -BF'%n#f' "${f}" | tr ',' '\n' | \
+			while read odylib ; do
+				ndylib=
+				case ${odylib} in
+					*/libclang.dylib)
+						ndylib="${EPREFIX}"/usr/lib/libclang.dylib
+						;;
+					*/libLLVM-${libpv}.dylib)
+						ndylib="${EPREFIX}"/usr/lib/libLLVM-${libpv}.dylib
+						;;
+					*/libLTO.dylib)
+						ndylib="${EPREFIX}"/usr/lib/libLTO.dylib
+						;;
+				esac
+				if [[ -n ${ndylib} ]] ; then
+					ebegin "fixing install_name reference to ${odylib} of ${f##*/}"
+					install_name_tool \
+						-change "${odylib}" "${ndylib}" \
+						"${f}"
+					eend $?
+				fi
+			done
+		done
+	fi
+}
+
+multilib_src_install_all() {
+	insinto /usr/share/vim/vimfiles/syntax
+	doins utils/vim/*.vim
+
+	if use clang; then
+		cd tools/clang || die
+
+		if use static-analyzer ; then
+			dobin tools/scan-build/ccc-analyzer
+			dosym ccc-analyzer /usr/bin/c++-analyzer
+			dobin tools/scan-build/scan-build
+
+			insinto /usr/share/${PN}
+			doins tools/scan-build/scanview.css
+			doins tools/scan-build/sorttable.js
+		fi
+
+		python_inst() {
+			if use static-analyzer ; then
+				pushd tools/scan-view >/dev/null || die
+
+				python_doscript scan-view
+
+				touch __init__.py || die
+				python_moduleinto clang
+				python_domodule __init__.py Reporter.py Resources ScanView.py startfile.py
+
+				popd >/dev/null || die
+			fi
+
+			if use python ; then
+				pushd bindings/python/clang >/dev/null || die
+
+				python_moduleinto clang
+				python_domodule __init__.py cindex.py enumerations.py
+
+				popd >/dev/null || die
+			fi
+
+			# AddressSanitizer symbolizer (currently separate)
+			python_doscript "${S}"/projects/compiler-rt/lib/asan/scripts/asan_symbolize.py
+		}
+		python_foreach_impl python_inst
+	fi
+}

diff --git a/sys-devel/llvm/metadata.xml b/sys-devel/llvm/metadata.xml
new file mode 100644
index 0000000..1a63066
--- /dev/null
+++ b/sys-devel/llvm/metadata.xml
@@ -0,0 +1,28 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<!DOCTYPE pkgmetadata SYSTEM "http://www.gentoo.org/dtd/metadata.dtd">
+<pkgmetadata>
+	<maintainer>
+		<email>voyageur@g.o</email>
+		<name>Bernard Cafarelli</name>
+	</maintainer>
+	<maintainer>
+		<email>mgorny@g.o</email>
+		<name>Michał Górny</name>
+	</maintainer>
+	<longdescription>Low Level Virtual Machine (LLVM) is:
+   1. A compilation strategy designed to enable effective program optimization across the entire lifetime of a program. LLVM supports effective optimization at compile time, link-time (particularly interprocedural), run-time and offline (i.e., after software is installed), while remaining transparent to developers and maintaining compatibility with existing build scripts.
+   2. A virtual instruction set - LLVM is a low-level object code representation that uses simple RISC-like instructions, but provides rich, language-independent, type information and dataflow (SSA) information about operands. This combination enables sophisticated transformations on object code, while remaining light-weight enough to be attached to the executable. This combination is key to allowing link-time, run-time, and offline transformations.
+   3. A compiler infrastructure - LLVM is also a collection of source code that implements the language and compilation strategy. The primary components of the LLVM infrastructure are a GCC-based C and C++ front-end, a link-time optimization framework with a growing set of global and interprocedural analyses and transformations, static back-ends for many popular (and some obscure) architectures, a back-end which emits portable C code, and a Just-In-Time compilers for several architectures.
+   4. LLVM does not imply things that you would expect from a high-level virtual machine. It does not require garbage collection or run-time code generation (In fact, LLVM makes a great static compiler!). Note that optional LLVM components can be used to build high-level virtual machines and other systems that need these services.</longdescription>
+	<use>
+		<flag name='clang'>Build the clang C/C++ compiler</flag>
+		<flag name='cmake'>Enable cmake support (experimental)</flag>
+		<flag name='doc'>Build and install the HTML documentation and regenerate the man pages</flag>
+		<flag name='gold'>Build the gold linker plugin</flag>
+		<flag name='llvm-gcc'>Build LLVM with <pkg>sys-devel/llvm-gcc</pkg></flag>
+		<flag name='multitarget'>Build all host targets (default: host only)</flag>
+		<flag name='ncurses'>Support querying terminal properties using ncurses' terminfo</flag>
+		<flag name='static-analyzer'>Install the Clang static analyzer (requires USE=clang)</flag>
+		<flag name='udis86'>Enable support for <pkg>dev-libs/udis86</pkg> disassembler library</flag>
+	</use>
+</pkgmetadata>