termux-packages/packages/libllvm/tools-clang-lib-Driver-Tools.cpp.patch

diff -u -r ../llvm-3.9.0.src/tools/clang/lib/Driver/Tools.cpp ./tools/clang/lib/Driver/Tools.cpp
--- ../llvm-3.9.0.src/tools/clang/lib/Driver/Tools.cpp	2016-08-13 16:43:56.000000000 -0400
+++ ./tools/clang/lib/Driver/Tools.cpp	2016-09-04 06:15:59.703422745 -0400
@@ -7415,10 +7415,12 @@
   const char *GCCName;
   if (!customGCCName.empty())
     GCCName = customGCCName.c_str();
-  else if (D.CCCIsCXX()) {
-    GCCName = "g++";
-  } else
-    GCCName = "gcc";
+  else
+    // Termux modification: Disable calling into gcc from clang.
+    // Clang calls into gcc if it tries to compile a language it doesn't understand.
+    // On Termux gcc is a symlink to clang, so this leads into fork loop until
+    // the whole system runs out of memory.
+    GCCName = "false";
 
   const char *Exec = Args.MakeArgString(getToolChain().GetProgramPath(GCCName));
   C.addCommand(llvm::make_unique<Command>(JA, *this, Exec, CmdArgs, Inputs));
@@ -9357,9 +9357,12 @@
   const llvm::Triple::ArchType Arch = ToolChain.getArch();
   const bool isAndroid = ToolChain.getTriple().isAndroid();
   const bool IsIAMCU = ToolChain.getTriple().isOSIAMCU();
+  // Termux modification: Enable pie by default for Android and support the
+  // nopie flag.
   const bool IsPIE =
       !Args.hasArg(options::OPT_shared) && !Args.hasArg(options::OPT_static) &&
-      (Args.hasArg(options::OPT_pie) || ToolChain.isPIEDefault());
+      (Args.hasArg(options::OPT_pie) || ToolChain.isPIEDefault() || isAndroid) &&
+      !Args.hasArg(options::OPT_nopie);
   const bool HasCRTBeginEndFiles =
       ToolChain.getTriple().hasEnvironment() ||
       (ToolChain.getTriple().getVendor() != llvm::Triple::MipsTechnologies);