work around a recent clang change

build.sh

@@ -179,6 +179,7 @@ popd &>/dev/null
 patch -p0 < $PATCH_DIR/cctools-ld64-1.patch
 patch -p0 < $PATCH_DIR/cctools-ld64-2.patch
 patch -p1 < $PATCH_DIR/cctools-ld64-strnlen.patch
+patch -p0 < $PATCH_DIR/cctools-ld64-llvm-3.7.patch
 echo ""
 CONFFLAGS="--prefix=$TARGET_DIR --target=x86_64-apple-$TARGET"
 [ -n "$DISABLE_LTO_SUPPORT" ] && CONFFLAGS+=" --enable-lto=no"

patches/cctools-ld64-llvm-3.7.patch

@@ -0,0 +1,49 @@
+--- configure
++++ configure
+@@ -8147,6 +8147,10 @@
+ $RM -r conftest*
+ 
+ 
++## CAVEAT EMPTOR:
++## There is no encapsulation within the following macros, do not change
++## the running order or otherwise move them around unless you know exactly
++## what you are doing...
+ if test -n "$compiler"; then
+ 
+ lt_prog_compiler_no_builtin_flag=
+@@ -16686,10 +16690,12 @@
+ 
+     if test "x$enable_lto" = "xyes"; then
+         for ac_prog in llvm-config                                     \
+-             llvm-config-3.6 llvm-config-3.5 llvm-config-3.4 \
+-             llvm-config-3.3 llvm-config-3.2 llvm-config-3.1 \
+-             llvm-config36 llvm-config35 llvm-config34       \
+-             llvm-config33 llvm-config32 llvm-config31
++             llvm-config-3.7 llvm-config-3.6 llvm-config-3.5 \
++             llvm-config-3.4 llvm-config-3.3 llvm-config-3.2 \
++             llvm-config-3.1                                 \
++             llvm-config37 llvm-config36 llvm-config35       \
++             llvm-config34 llvm-config33 llvm-config32       \
++             llvm-config31
+ do
+   # Extract the first word of "$ac_prog", so it can be a program name with args.
+ set dummy $ac_prog; ac_word=$2
+--- m4/llvm.m4
++++ m4/llvm.m4
+@@ -8,10 +8,12 @@
+     if test "x$enable_lto" = "xyes"; then
+         AC_PATH_PROGS(LLVM_CONFIG,
+             [llvm-config                                     \
+-             llvm-config-3.6 llvm-config-3.5 llvm-config-3.4 \
+-             llvm-config-3.3 llvm-config-3.2 llvm-config-3.1 \
+-             llvm-config36 llvm-config35 llvm-config34       \
+-             llvm-config33 llvm-config32 llvm-config31],
++             llvm-config-3.7 llvm-config-3.6 llvm-config-3.5 \
++             llvm-config-3.4 llvm-config-3.3 llvm-config-3.2 \
++             llvm-config-3.1                                 \
++             llvm-config37 llvm-config36 llvm-config35       \
++             llvm-config34 llvm-config33 llvm-config32       \
++             llvm-config31],
+         no)
+ 
+         if test "x$LLVM_CONFIG" != "xno"; then

wrapper/target.cpp

@@ -246,7 +246,7 @@ const std::string Target::getFullCompilerName() const {
   return compiler;
 }
 
-bool Target::findClangIntrinsicHeaders(std::string &path) const {
+bool Target::findClangIntrinsicHeaders(std::string &path) {
   std::string clangbin;
   static std::stringstream dir;
 
@@ -257,11 +257,13 @@ bool Target::findClangIntrinsicHeaders(std::string &path) const {
   if (clangbin.empty())
     return false;
 
-  static ClangVersion clangversion;
+  static ClangVersion *clangversion;
   static std::string pathtmp;
 
+  clangversion = &this->clangversion;
+
   clear(dir);
-  clangversion = ClangVersion();
+  *clangversion = ClangVersion();
   pathtmp.clear();
 
   auto check = []()->bool {
@@ -283,8 +285,8 @@ bool Target::findClangIntrinsicHeaders(std::string &path) const {
             file << "/xmmintrin.h";
 
             if (fileExists(file.str())) {
-              if (cv > clangversion) {
+              if (cv > *clangversion) {
-                clangversion = cv;
+                *clangversion = cv;
                 pathtmp.swap(intrindir);
               }
               return true;
@@ -308,7 +310,7 @@ bool Target::findClangIntrinsicHeaders(std::string &path) const {
       return true;
     });
 
-    return clangversion != ClangVersion();
+    return *clangversion != ClangVersion();
   };
 
   dir << clangbin << "/../lib/clang";
@@ -341,7 +343,7 @@ bool Target::findClangIntrinsicHeaders(std::string &path) const {
   }
 
   path.swap(pathtmp);
-  return clangversion != ClangVersion();
+  return *clangversion != ClangVersion();
 }
 
 void Target::setupGCCLibs(Arch arch) {
@@ -612,6 +614,19 @@ bool Target::setup() {
         // Use libs from './build_gcc' installation
         setupGCCLibs(targetarch[0]);
       }
+
+#ifndef __APPLE__
+      // TODO: Need a way to distinguish between vanilla and Xcode clang
+      // versions.
+
+      if (clangversion >= ClangVersion(3, 7, 0) &&
+          !getenv("OSXCROSS_NO_DEF_SIZED_DELETE")) {
+        // Will run into linker errors otherwise with not so recent libc++
+        // and libstdc++ versions.
+        if (!usegcclibs || gccversion < GCCVersion(5, 0, 0))
+          fargs.push_back("-fdef-sized-delete");
+      }
+#endif
     }
   } else if (isGCC()) {
 

wrapper/target.h

@@ -134,7 +134,7 @@ struct Target {
   const std::string &getTriple() const { return triple; }
 
   const std::string getFullCompilerName() const;
-  bool findClangIntrinsicHeaders(std::string &path) const;
+  bool findClangIntrinsicHeaders(std::string &path);
 
   void setupGCCLibs(Arch arch);
   bool setup();
@@ -145,8 +145,9 @@ struct Target {
   std::string target;
   OSVersion OSNum;
   StdLib stdlib;
-  bool usegcclibs;
+  ClangVersion clangversion;
   GCCVersion gccversion;
+  bool usegcclibs;
   bool nocodegen;
   std::string compiler;
   std::string triple;