diff --git a/README.md b/README.md
index 054f5a5..627afdd 100644
--- a/README.md
+++ b/README.md
@@ -29,8 +29,12 @@ Move your packaged SDK to the tarballs/ directory.
 
 Then ensure you have the following installed on your Linux/BSD box:
 
-`Clang 3.2+`, `llvm-devel`, `patch`, `libxml2-devel` (<=10.5 only),  
-`uuid-devel`,   `openssl-devel` and the `bash shell`.
+`Clang 3.2+`, `patch`, `libxml2-devel` (<=10.6 only) and the `bash shell`.
+
+Optional:
+
+`llvm-devel`: For Link Time Optimization support  
+`uuid-devel`: For ld64 `-random_uuid` support
 
 \--  
 You can run 'sudo tools/get\_dependencies.sh' to get these automatically.  
@@ -198,6 +202,14 @@ can be overriden by explicitly passing `-stdlib=libstdc++` to clang.
 x86\_64h defaults to `Mac OS X 10.8` and requires clang 3.5+.  
 x86\_64h = x86\_64 with optimizations for the Intel Haswell Architecture.
 
+### BUILDING OSXCROSS WITH GCC: ###
+
+You can build OSXCross with GCC this way:
+
+`CC=gcc CXX=g++ ./build.sh`
+
+You will need gcc/g++/gcc-objc 4.6+.
+
 ### LICENSE: ####
   * scripts/wrapper: GPLv2
   * cctools/ld64: APSL 2.0
diff --git a/build.sh b/build.sh
index 7c48b5c..4289b46 100755
--- a/build.sh
+++ b/build.sh
@@ -114,6 +114,7 @@ mkdir -p $SDK_DIR
 
 require $CC
 require $CXX
+
 require clang
 require patch
 require sed
@@ -135,7 +136,7 @@ if [ "$PLATFORM" == "Darwin" ]; then
   CXX+=" -stdlib=libc++"
 fi
 
-res=`check_cxx_stdlib`
+res=$(check_cxx_stdlib)
 
 if [ "$PLATFORM" == "Darwin" ]; then
   CXX=$PREVCXX
@@ -143,18 +144,19 @@ if [ "$PLATFORM" == "Darwin" ]; then
 fi
 
 if [ $res -ne 0 ]; then
-  echo "Your C++ standard library is either broken or too old to build ld64-241.9"
-  echo "Building ld64-134.9 instead"
-  echo ""
+  echo "Your C++ standard library is either broken or too old to build ld64-241.9" 1>&2
+  echo "Building ld64-134.9 instead" 1>&2
+  echo "" 1>&2
   sleep 3
   LINKER_VERSION=134.9
 else
-  LINKER_VERSION=241.9
+  LINKER_VERSION=242
 fi
 
-CCTOOLS="cctools-862-ld64-$LINKER_VERSION"
+CCTOOLS="cctools-870-ld64-$LINKER_VERSION"
 CCTOOLS_TARBALL=$(ls $TARBALL_DIR/$CCTOOLS*.tar.* | head -n1)
-CCTOOLS_REVHASH=$(echo $(basename "$CCTOOLS_TARBALL") | tr '_' ' ' | tr '.' ' ' | awk '{print $3}')
+CCTOOLS_REVHASH=$(echo $(basename "$CCTOOLS_TARBALL") | tr '_' '\n' | \
+                  tr '.' '\n' | tail -n3 | head -n1)
 
 if [ ! -f "have_cctools_${CCTOOLS_REVHASH}_$TARGET" ]; then
 
@@ -169,14 +171,6 @@ pushd .. &>/dev/null
 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
-patch -p0 < $PATCH_DIR/cctools-ld64-abs-warning.patch
-patch -p0 < $PATCH_DIR/cctools-ld64-rpath.patch
-pushd .. &>/dev/null
-patch -p0 < $PATCH_DIR/cctools-ld64-otool-disasm.patch
-chmod +x tools/fix_liblto.sh
-popd &>/dev/null
 echo ""
 CONFFLAGS="--prefix=$TARGET_DIR --target=x86_64-apple-$TARGET"
 [ -n "$DISABLE_LTO_SUPPORT" ] && CONFFLAGS+=" --enable-lto=no"
diff --git a/patches/cctools-ld64-abs-warning.patch b/patches/cctools-ld64-abs-warning.patch
deleted file mode 100644
index 4ebf025..0000000
--- a/patches/cctools-ld64-abs-warning.patch
+++ /dev/null
@@ -1,38 +0,0 @@
---- as/arm.c
-+++ as/arm.c
-@@ -17839,7 +17839,7 @@
-        {
-          bfd_vma insn;
-          bfd_vma encoded_addend;
--         bfd_vma addend_abs = abs (value);
-+         bfd_vma addend_abs = abs ((int)value);
- 
-          /* Check that the absolute value of the addend can be
-             expressed as an 8-bit constant plus a rotation.  */
-@@ -17884,7 +17884,7 @@
- #endif
-         {
-           bfd_vma insn;
--          bfd_vma addend_abs = abs (value);
-+          bfd_vma addend_abs = abs ((int)value);
- 
-           /* Check that the absolute value of the addend can be
-              encoded in 12 bits.  */
-@@ -17927,7 +17927,7 @@
- #endif
-         {
-           bfd_vma insn;
--          bfd_vma addend_abs = abs (value);
-+          bfd_vma addend_abs = abs ((int)value);
- 
-           /* Check that the absolute value of the addend can be
-              encoded in 8 bits.  */
-@@ -17971,7 +17971,7 @@
- #endif
-         {
-           bfd_vma insn;
--          bfd_vma addend_abs = abs (value);
-+          bfd_vma addend_abs = abs ((int)value);
- 
-           /* Check that the absolute value of the addend is a multiple of
-              four and, when divided by four, fits in 8 bits.  */
diff --git a/patches/cctools-ld64-llvm-3.7.patch b/patches/cctools-ld64-llvm-3.7.patch
deleted file mode 100644
index ae35139..0000000
--- a/patches/cctools-ld64-llvm-3.7.patch
+++ /dev/null
@@ -1,49 +0,0 @@
---- 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
diff --git a/patches/cctools-ld64-otool-disasm.patch b/patches/cctools-ld64-otool-disasm.patch
deleted file mode 100644
index 70f529e..0000000
--- a/patches/cctools-ld64-otool-disasm.patch
+++ /dev/null
@@ -1,139 +0,0 @@
-diff --git cctools/libstuff/llvm.c cctools/libstuff/llvm.c
-index 447140d..26b0a66 100644
---- cctools/libstuff/llvm.c
-+++ cctools/libstuff/llvm.c
-@@ -14,7 +14,11 @@
-  * plan to include it (along with the current libLTO APIs) in a generic
-  * libLLVM.dylib.
-  */
-+#ifdef __APPLE__
-+#define LIB_LLVM "libLTO.dylib"
-+#else
- #define LIB_LLVM "libLTO.so"
-+#endif /* __APPLE__ */
- 
- static int tried_to_load_llvm = 0;
- static void *llvm_handle = NULL;
-@@ -62,12 +66,20 @@ static void load_llvm(void)
- 		p[1] = '\0';
- 	    llvm_path = makestr(prefix, "../lib/" LIB_LLVM, NULL);
- 
-+#ifdef __APPLE__
- 	    llvm_handle = dlopen(llvm_path, RTLD_NOW);
- 	    if(llvm_handle == NULL){
- 		free(llvm_path);
- 		llvm_path = NULL;
--		llvm_handle = dlopen("/usr/lib/llvm/" LIB_LLVM, RTLD_NOW);
-+		llvm_handle = dlopen("/Applications/Xcode.app/Contents/"
-+				     "Developer/Toolchains/XcodeDefault."
-+				     "xctoolchain/usr/lib/" LIB_LLVM,
-+				     RTLD_NOW);
- 	    }
-+#else
-+	    llvm_handle = dlopen(LIB_LLVM, RTLD_NOW);
-+#endif /* __APPLE__ */
-+
- 	    if(llvm_handle == NULL)
- 		return;
- 
-@@ -80,6 +92,13 @@ static void load_llvm(void)
- 	    createCPU = dlsym(llvm_handle, "LLVMCreateDisasmCPU");
- 	    version = dlsym(llvm_handle, "lto_get_version");
- 
-+#ifndef __APPLE__
-+	    if(create == NULL){
-+		fprintf(stderr, "Your " LIB_LLVM " lacks required symbols.\n");
-+		fprintf(stderr, "Please run: tools/fix_liblto.sh (or http://git.io/AyZP) to fix libLTO.\n");
-+	    }
-+#endif /* __APPLE__ */
-+
- 	    if(create == NULL ||
- 	       dispose == NULL ||
- 	       disasm == NULL){
-diff --git tools/fix_liblto.sh tools/fix_liblto.sh
-new file mode 100755
-index 0000000..6cb05e8
---- /dev/null
-+++ tools/fix_liblto.sh
-@@ -0,0 +1,81 @@
-+#!/usr/bin/env bash
-+## http://llvm.org/PR22677
-+
-+pushd "${0%/*}" &>/dev/null
-+
-+if [ $(uname -s) == "Darwin" ]; then
-+  echo "Darwin works out of the box."
-+  exit 1
-+fi
-+
-+if [ -z "$LLVM_CONFIG" ]; then
-+  LLVM_CONFIG=llvm-config
-+fi
-+
-+which $LLVM_CONFIG &>/dev/null
-+
-+if [ $? -ne 0 ]; then
-+  echo -n "Cannot find $LLVM_CONFIG, you may want to try " 1>&2
-+  echo "LLVM_CONFIG=llvm-config<suffix> $0" 1>&2
-+  exit 1
-+fi
-+
-+LIBDIR=$($LLVM_CONFIG --libdir)
-+INCDIR=$($LLVM_CONFIG --includedir)
-+
-+V="$(readelf -Ws $LIBDIR/libLTO.so 2>/dev/null | grep LLVMCreateDisasm)"
-+
-+if [ -n "$V" ]; then
-+  echo "No fix needed."
-+  exit 1
-+fi
-+
-+VERSION=$($LLVM_CONFIG --version | awk -F \. {'print $1$2'} | sed 's/svn//g')
-+
-+if [ $VERSION -lt 34 ]; then
-+  echo "This tool requires LLVM 3.4 or later." 1>&2
-+  exit 1
-+fi
-+
-+LIBS=$($LLVM_CONFIG --libs all)
-+SYSLIBS=$($LLVM_CONFIG --system-libs 2>/dev/null || echo "-ldl -lz -ltinfo -pthread")
-+CXXFLAGS=$($LLVM_CONFIG --cxxflags)
-+
-+if [ $VERSION -ge 35 ]; then
-+  SYSLIBS+=" -ledit"
-+fi
-+
-+set -e
-+TMP=$(mktemp -d)
-+set +e
-+
-+pushd $TMP &>/dev/null
-+wget https://raw.githubusercontent.com/llvm-mirror/llvm/release_$VERSION/tools/lto/lto.cpp
-+wget https://raw.githubusercontent.com/llvm-mirror/llvm/release_$VERSION/tools/lto/LTODisassembler.cpp
-+wget https://raw.githubusercontent.com/llvm-mirror/llvm/release_$VERSION/tools/lto/lto.exports
-+
-+echo "{" > lto.ls
-+echo "  global:" >> lto.ls
-+while read p; do
-+  echo "   $p;" >> lto.ls
-+done < lto.exports
-+echo "   LLVM*;" >> lto.ls
-+echo "  local: *;" >> lto.ls
-+echo "};" >> lto.ls
-+popd &>/dev/null
-+
-+set -x
-+
-+clang++ -shared \
-+ -L$LIBDIR -I$INCDIR -Wl,--whole-archive $LIBS -Wl,--no-whole-archive $SYSLIBS   \
-+ $CXXFLAGS $TMP/lto.cpp $TMP/LTODisassembler.cpp -Wl,-version-script,$TMP/lto.ls \
-+ -Wl,-no-undefined -fno-rtti -fPIC -o libLTO.so
-+
-+rm -r $TMP
-+
-+mv -f libLTO.so $LIBDIR || {
-+  set +x
-+  echo "Try again as root."
-+  echo "Or run the following command by hand: mv $PWD/libLTO.so $LIBDIR"
-+  exit 1
-+}
diff --git a/patches/cctools-ld64-rpath.patch b/patches/cctools-ld64-rpath.patch
deleted file mode 100644
index 034a7d2..0000000
--- a/patches/cctools-ld64-rpath.patch
+++ /dev/null
@@ -1,29 +0,0 @@
---- configure
-+++ configure
-@@ -16789,7 +16789,6 @@
-    LTO_LIB="-L${LLVM_LIB_DIR} -lLTO"
-                if test "x$rpathlink" = "xyes"; then
-                    LTO_RPATH="-Wl,-rpath,$LLVM_LIB_DIR,--enable-new-dtags"
--                   LTO_LIB="$LTO_RPATH $LTO_LIB"
-                fi
-                LTO_DEF=-DLTO_SUPPORT
-                # DO NOT include the LLVM include dir directly,
-@@ -16813,6 +16812,8 @@
- 
- 
- 
-+LDFLAGS="$LDFLAGS $LTO_RPATH"
-+
- ### Check endianness ###
- 
-  { $as_echo "$as_me:${as_lineno-$LINENO}: checking whether byte ordering is bigendian" >&5
---- m4/llvm.m4
-+++ m4/llvm.m4
-@@ -27,7 +27,6 @@
-              [ LTO_LIB="-L${LLVM_LIB_DIR} -lLTO"
-                if test "x$rpathlink" = "xyes"; then
-                    LTO_RPATH="-Wl,-rpath,$LLVM_LIB_DIR,--enable-new-dtags"
--                   LTO_LIB="$LTO_RPATH $LTO_LIB"
-                fi
-                LTO_DEF=-DLTO_SUPPORT
-                # DO NOT include the LLVM include dir directly,
diff --git a/patches/cctools-ld64-strnlen.patch b/patches/cctools-ld64-strnlen.patch
deleted file mode 100644
index c40bbf9..0000000
--- a/patches/cctools-ld64-strnlen.patch
+++ /dev/null
@@ -1,67 +0,0 @@
-diff --git cctools/include/foreign/i386/_types.h cctools/include/foreign/i386/_types.h
-index 601b196..8bffd6f 100644
---- cctools/include/foreign/i386/_types.h
-+++ cctools/include/foreign/i386/_types.h
-@@ -33,6 +33,15 @@
-  * flotaing point and other arithmetic types, as needed, later.
-  */
- 
-+/*
-+ * Silence old glibc -Wtypedef-redefinition warnings.
-+ * https://github.com/tpoechtrager/cctools-port/pull/8
-+ */
-+#ifdef __clang__
-+#pragma clang diagnostic push
-+#pragma clang diagnostic ignored "-Wtypedef-redefinition"
-+#endif
-+
- #ifdef __GNUC__
- typedef __signed char		__int8_t;
- #else	/* !__GNUC__ */
-@@ -121,4 +130,8 @@ typedef __uint32_t		__darwin_socklen_t;	/* socklen_t (duh) */
- typedef long			__darwin_ssize_t;	/* byte count or error */
- typedef long			__darwin_time_t;	/* time() */
- 
-+#ifdef __clang__
-+#pragma clang diagnostic pop
-+#endif
-+
- #endif	/* _BSD_I386__TYPES_H_ */
-diff --git cctools/ld64/src/3rd/strlcat.c cctools/ld64/src/3rd/strlcat.c
-index ef1a10a..faf09e3 100644
---- cctools/ld64/src/3rd/strlcat.c
-+++ cctools/ld64/src/3rd/strlcat.c
-@@ -23,6 +23,14 @@
- 
- #ifndef __APPLE__
- 
-+/*
-+ * Otherwise string.h may hide strnlen().
-+ * https://github.com/tpoechtrager/cctools-port/pull/8
-+ */
-+#ifndef _GNU_SOURCE
-+#define _GNU_SOURCE
-+#endif
-+
- #include <string.h>
- 
- size_t
-diff --git cctools/otool/ofile_print.c cctools/otool/ofile_print.c
-index 3eb6506..4e9493a 100644
---- cctools/otool/ofile_print.c
-+++ cctools/otool/ofile_print.c
-@@ -201,6 +201,14 @@
- #define __dr6 dr6
- #define __dr7 dr7
- 
-+/*
-+ * Otherwise string.h may hide strnlen().
-+ * https://github.com/tpoechtrager/cctools-port/pull/8
-+ */
-+#ifndef _GNU_SOURCE
-+#define _GNU_SOURCE
-+#endif
-+
- #include <stdlib.h>
- #include <stddef.h>
- #include <string.h>
diff --git a/tarballs/cctools-862-ld64-134.9_6b0448a.tar.xz b/tarballs/cctools-862-ld64-134.9_6b0448a.tar.xz
deleted file mode 100644
index 494b875..0000000
Binary files a/tarballs/cctools-862-ld64-134.9_6b0448a.tar.xz and /dev/null differ
diff --git a/tarballs/cctools-862-ld64-241.9_2201b7b.tar.xz b/tarballs/cctools-862-ld64-241.9_2201b7b.tar.xz
deleted file mode 100644
index 7876a7c..0000000
Binary files a/tarballs/cctools-862-ld64-241.9_2201b7b.tar.xz and /dev/null differ
diff --git a/tarballs/cctools-870-ld64-134.9_46e5f8b.tar.xz b/tarballs/cctools-870-ld64-134.9_46e5f8b.tar.xz
new file mode 100644
index 0000000..51fe2df
Binary files /dev/null and b/tarballs/cctools-870-ld64-134.9_46e5f8b.tar.xz differ
diff --git a/tarballs/cctools-870-ld64-242_9372d4c.tar.xz b/tarballs/cctools-870-ld64-242_9372d4c.tar.xz
new file mode 100644
index 0000000..915822f
Binary files /dev/null and b/tarballs/cctools-870-ld64-242_9372d4c.tar.xz differ
diff --git a/tools/tools.sh b/tools/tools.sh
index 6354404..451def4 100755
--- a/tools/tools.sh
+++ b/tools/tools.sh
@@ -11,13 +11,45 @@ PATCH_DIR=$BASE_DIR/patches
 SDK_DIR=$TARGET_DIR/SDK
 
 if [ -z "$USESYSTEMCOMPILER" ]; then
-  export CC=clang
-  export CXX=clang++
+  # Default to gcc on some OSs rather than clang due to either
+  # libstdc++ issues (clang uses an outdated version on those)
+  # or some other incompatibilities
+
+  case "$PLATFORM" in
+    CYGWIN* | DragonFly )
+      cc=gcc
+      cxx=g++
+    ;;
+    OpenBSD )
+      cc=egcc
+      cxx=eg++
+    ;;
+    Darwin )
+      cc=clang
+      cxx=clang++
+    ;;
+    * )
+      case "$ARCH" in
+        arm* )
+          cc=gcc
+          cxx=g++
+        ;;
+        * )
+          cc=clang
+          cxx=clang++
+        ;;
+      esac
+    ;;
+  esac
+
+  [ -z "$CC" ] && export CC=$cc
+  [ -z "$CXX" ] && export CXX=$cxx
 elif [ -n "$CC" -o -n "$CXX" ]; then
   echo "CC/CXX should not be set, continuing in 5 seconds..." 1>&2
   sleep 5
 fi
 
+
 # enable debug messages
 test -n "$OCDEBUG" && set -x