From: Vladimir Serbinenko <phcoder@google.com>
Date: Fri, 1 Sep 2017 00:16:41 +0000 (+0200)
Subject: clang: Disable calling into gcc from clang.
X-Git-Url: https://www.chiark.greenend.org.uk/ucgi/~mdw/git/termux-packages/commitdiff_plain/1a709d1143eb70b33e7e4df808f00b6caf2b8c29?ds=inline

clang: 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.
---

diff --git a/packages/libllvm/gcc_loop.patch b/packages/libllvm/gcc_loop.patch
new file mode 100644
index 00000000..06dded89
--- /dev/null
+++ b/packages/libllvm/gcc_loop.patch
@@ -0,0 +1,20 @@
+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.
+
+--- libllvm/tools/clang/lib/Driver/ToolChains/Gnu.cpp	2017-08-31 21:08:36.602287744 +0200
++++ libllvm-mod/tools/clang/lib/Driver/ToolChains/Gnu.cpp	2017-09-01 01:00:41.695209952 +0200
+@@ -157,9 +157,9 @@
+   if (!customGCCName.empty())
+     GCCName = customGCCName.c_str();
+   else if (D.CCCIsCXX()) {
+-    GCCName = "g++";
++    GCCName = "false";
+   } else
+-    GCCName = "gcc";
++    GCCName = "false";
+ 
+   const char *Exec = Args.MakeArgString(getToolChain().GetProgramPath(GCCName));
+   C.addCommand(llvm::make_unique<Command>(JA, *this, Exec, CmdArgs, Inputs));