diff --git a/0_RootFS/DarwinSDKs/.gitignore b/0_RootFS/DarwinSDKs/.gitignore
new file mode 100644
index 00000000000..ae3354b4b2e
--- /dev/null
+++ b/0_RootFS/DarwinSDKs/.gitignore
@@ -0,0 +1 @@
+*.sdk
diff --git a/0_RootFS/GCCBootstrap@11-IainS/build_tarballs.jl b/0_RootFS/GCCBootstrap@11-IainS/build_tarballs.jl
new file mode 100644
index 00000000000..b890d19eb28
--- /dev/null
+++ b/0_RootFS/GCCBootstrap@11-IainS/build_tarballs.jl
@@ -0,0 +1,2 @@
+include("../gcc_common.jl")
+build_and_upload_gcc(v"11.0.0-iains")
diff --git a/0_RootFS/GCCBootstrap@11-IainS/bundled/patches/binutils_deterministic_dlltool.patch b/0_RootFS/GCCBootstrap@11-IainS/bundled/patches/binutils_deterministic_dlltool.patch
new file mode 120000
index 00000000000..aceafcc0975
--- /dev/null
+++ b/0_RootFS/GCCBootstrap@11-IainS/bundled/patches/binutils_deterministic_dlltool.patch
@@ -0,0 +1 @@
+../../../GCCBootstrap@4/bundled/patches/binutils_deterministic_dlltool.patch
\ No newline at end of file
diff --git a/0_RootFS/GCCBootstrap@11-IainS/bundled/patches/binutils_freebsd_symbol_versioning.patch b/0_RootFS/GCCBootstrap@11-IainS/bundled/patches/binutils_freebsd_symbol_versioning.patch
new file mode 120000
index 00000000000..def50f526dd
--- /dev/null
+++ b/0_RootFS/GCCBootstrap@11-IainS/bundled/patches/binutils_freebsd_symbol_versioning.patch
@@ -0,0 +1 @@
+../../../GCCBootstrap@4/bundled/patches/binutils_freebsd_symbol_versioning.patch
\ No newline at end of file
diff --git a/0_RootFS/GCCBootstrap@11-IainS/bundled/patches/gcc485_mingw_include.patch b/0_RootFS/GCCBootstrap@11-IainS/bundled/patches/gcc485_mingw_include.patch
new file mode 120000
index 00000000000..a2b50298a2a
--- /dev/null
+++ b/0_RootFS/GCCBootstrap@11-IainS/bundled/patches/gcc485_mingw_include.patch
@@ -0,0 +1 @@
+../../../GCCBootstrap@4/bundled/patches/gcc485_mingw_include.patch
\ No newline at end of file
diff --git a/0_RootFS/GCCBootstrap@11-IainS/bundled/patches/gcc810_linker_madness_on_osx.patch b/0_RootFS/GCCBootstrap@11-IainS/bundled/patches/gcc810_linker_madness_on_osx.patch
new file mode 100644
index 00000000000..a05c2b6918c
--- /dev/null
+++ b/0_RootFS/GCCBootstrap@11-IainS/bundled/patches/gcc810_linker_madness_on_osx.patch
@@ -0,0 +1,69 @@
+From 5dc1001e6a8ed88b11080d5fe065aaa4960e7415 Mon Sep 17 00:00:00 2001
+From: Iain Sandoe <iain@codesourcery.com>
+Date: Fri, 27 Jul 2018 14:10:04 +0100
+Subject: [PATCH] pr81033-v2
+
+---
+ gcc/dwarf2out.c | 11 +++++++++--
+ gcc/final.c     |  3 +++
+ 2 files changed, 12 insertions(+), 2 deletions(-)
+
+diff --git a/gcc/dwarf2out.c b/gcc/dwarf2out.c
+index 208f2e97e7..806b081605 100644
+--- a/gcc/dwarf2out.c
++++ b/gcc/dwarf2out.c
+@@ -297,6 +297,10 @@ static unsigned int rnglist_idx;
+ #define FUNC_BEGIN_LABEL	"LFB"
+ #endif
+ 
++#ifndef FUNC_SECOND_SECT_LABEL
++#define FUNC_SECOND_SECT_LABEL	"LFSB"
++#endif
++
+ #ifndef FUNC_END_LABEL
+ #define FUNC_END_LABEL		"LFE"
+ #endif
+@@ -1212,21 +1216,24 @@ static void set_cur_line_info_table (section *);
+ void
+ dwarf2out_switch_text_section (void)
+ {
++  char label[MAX_ARTIFICIAL_LABEL_BYTES];
+   section *sect;
+   dw_fde_ref fde = cfun->fde;
+ 
+   gcc_assert (cfun && fde && fde->dw_fde_second_begin == NULL);
+ 
++  ASM_GENERATE_INTERNAL_LABEL (label, FUNC_SECOND_SECT_LABEL,
++			       current_function_funcdef_no);
++
++  fde->dw_fde_second_begin = xstrdup (label);
+   if (!in_cold_section_p)
+     {
+       fde->dw_fde_end = crtl->subsections.cold_section_end_label;
+-      fde->dw_fde_second_begin = crtl->subsections.hot_section_label;
+       fde->dw_fde_second_end = crtl->subsections.hot_section_end_label;
+     }
+   else
+     {
+       fde->dw_fde_end = crtl->subsections.hot_section_end_label;
+-      fde->dw_fde_second_begin = crtl->subsections.cold_section_label;
+       fde->dw_fde_second_end = crtl->subsections.cold_section_end_label;
+     }
+   have_multiple_function_sections = true;
+diff --git a/gcc/final.c b/gcc/final.c
+index 6fa4acdaa2..2572325265 100644
+--- a/gcc/final.c
++++ b/gcc/final.c
+@@ -2223,6 +2223,9 @@ final_scan_insn_1 (rtx_insn *insn, FILE *file, int optimize_p ATTRIBUTE_UNUSED,
+ 	      ASM_OUTPUT_LABEL (asm_out_file,
+ 				IDENTIFIER_POINTER (cold_function_name));
+ #endif
++	      if (dwarf2out_do_frame ()
++	          && cfun->fde->dw_fde_second_begin != NULL)
++		ASM_OUTPUT_LABEL (asm_out_file, cfun->fde->dw_fde_second_begin);
+ 	    }
+ 	  break;
+ 
+-- 
+2.17.1
+
diff --git a/0_RootFS/GCCBootstrap@11-IainS/bundled/patches/glibc-ppc64le-01.patch b/0_RootFS/GCCBootstrap@11-IainS/bundled/patches/glibc-ppc64le-01.patch
new file mode 120000
index 00000000000..c750d5a8835
--- /dev/null
+++ b/0_RootFS/GCCBootstrap@11-IainS/bundled/patches/glibc-ppc64le-01.patch
@@ -0,0 +1 @@
+../../../GCCBootstrap@4/bundled/patches/glibc-ppc64le-01.patch
\ No newline at end of file
diff --git a/0_RootFS/GCCBootstrap@11-IainS/bundled/patches/glibc-ppc64le-02.patch b/0_RootFS/GCCBootstrap@11-IainS/bundled/patches/glibc-ppc64le-02.patch
new file mode 120000
index 00000000000..c2f8ca9cddb
--- /dev/null
+++ b/0_RootFS/GCCBootstrap@11-IainS/bundled/patches/glibc-ppc64le-02.patch
@@ -0,0 +1 @@
+../../../GCCBootstrap@4/bundled/patches/glibc-ppc64le-02.patch
\ No newline at end of file
diff --git a/0_RootFS/GCCBootstrap@11-IainS/bundled/patches/glibc-ppc64le-03.patch b/0_RootFS/GCCBootstrap@11-IainS/bundled/patches/glibc-ppc64le-03.patch
new file mode 120000
index 00000000000..7f9b18ab810
--- /dev/null
+++ b/0_RootFS/GCCBootstrap@11-IainS/bundled/patches/glibc-ppc64le-03.patch
@@ -0,0 +1 @@
+../../../GCCBootstrap@4/bundled/patches/glibc-ppc64le-03.patch
\ No newline at end of file
diff --git a/0_RootFS/GCCBootstrap@11-IainS/bundled/patches/glibc-ppc64le-04.patch b/0_RootFS/GCCBootstrap@11-IainS/bundled/patches/glibc-ppc64le-04.patch
new file mode 120000
index 00000000000..82f535d0ef6
--- /dev/null
+++ b/0_RootFS/GCCBootstrap@11-IainS/bundled/patches/glibc-ppc64le-04.patch
@@ -0,0 +1 @@
+../../../GCCBootstrap@4/bundled/patches/glibc-ppc64le-04.patch
\ No newline at end of file
diff --git a/0_RootFS/GCCBootstrap@11-IainS/bundled/patches/glibc-ppc64le-05.patch b/0_RootFS/GCCBootstrap@11-IainS/bundled/patches/glibc-ppc64le-05.patch
new file mode 120000
index 00000000000..629c1a71ca7
--- /dev/null
+++ b/0_RootFS/GCCBootstrap@11-IainS/bundled/patches/glibc-ppc64le-05.patch
@@ -0,0 +1 @@
+../../../GCCBootstrap@4/bundled/patches/glibc-ppc64le-05.patch
\ No newline at end of file
diff --git a/0_RootFS/GCCBootstrap@11-IainS/bundled/patches/glibc-ppc64le-06.patch b/0_RootFS/GCCBootstrap@11-IainS/bundled/patches/glibc-ppc64le-06.patch
new file mode 120000
index 00000000000..4682d7d2638
--- /dev/null
+++ b/0_RootFS/GCCBootstrap@11-IainS/bundled/patches/glibc-ppc64le-06.patch
@@ -0,0 +1 @@
+../../../GCCBootstrap@4/bundled/patches/glibc-ppc64le-06.patch
\ No newline at end of file
diff --git a/0_RootFS/GCCBootstrap@11-IainS/bundled/patches/glibc-ppc64le-07.patch b/0_RootFS/GCCBootstrap@11-IainS/bundled/patches/glibc-ppc64le-07.patch
new file mode 120000
index 00000000000..ec0ff4fc245
--- /dev/null
+++ b/0_RootFS/GCCBootstrap@11-IainS/bundled/patches/glibc-ppc64le-07.patch
@@ -0,0 +1 @@
+../../../GCCBootstrap@4/bundled/patches/glibc-ppc64le-07.patch
\ No newline at end of file
diff --git a/0_RootFS/GCCBootstrap@11-IainS/bundled/patches/glibc-ppc64le-08.patch b/0_RootFS/GCCBootstrap@11-IainS/bundled/patches/glibc-ppc64le-08.patch
new file mode 120000
index 00000000000..dd3d8002d07
--- /dev/null
+++ b/0_RootFS/GCCBootstrap@11-IainS/bundled/patches/glibc-ppc64le-08.patch
@@ -0,0 +1 @@
+../../../GCCBootstrap@4/bundled/patches/glibc-ppc64le-08.patch
\ No newline at end of file
diff --git a/0_RootFS/GCCBootstrap@11-IainS/bundled/patches/glibc-ppc64le-09.patch b/0_RootFS/GCCBootstrap@11-IainS/bundled/patches/glibc-ppc64le-09.patch
new file mode 120000
index 00000000000..6160e1ff6c9
--- /dev/null
+++ b/0_RootFS/GCCBootstrap@11-IainS/bundled/patches/glibc-ppc64le-09.patch
@@ -0,0 +1 @@
+../../../GCCBootstrap@4/bundled/patches/glibc-ppc64le-09.patch
\ No newline at end of file
diff --git a/0_RootFS/GCCBootstrap@11-IainS/bundled/patches/glibc-ppc64le-10.patch b/0_RootFS/GCCBootstrap@11-IainS/bundled/patches/glibc-ppc64le-10.patch
new file mode 120000
index 00000000000..3b0eb446435
--- /dev/null
+++ b/0_RootFS/GCCBootstrap@11-IainS/bundled/patches/glibc-ppc64le-10.patch
@@ -0,0 +1 @@
+../../../GCCBootstrap@4/bundled/patches/glibc-ppc64le-10.patch
\ No newline at end of file
diff --git a/0_RootFS/GCCBootstrap@11-IainS/bundled/patches/glibc-ppc64le-11.patch b/0_RootFS/GCCBootstrap@11-IainS/bundled/patches/glibc-ppc64le-11.patch
new file mode 120000
index 00000000000..1a8b2b1874a
--- /dev/null
+++ b/0_RootFS/GCCBootstrap@11-IainS/bundled/patches/glibc-ppc64le-11.patch
@@ -0,0 +1 @@
+../../../GCCBootstrap@4/bundled/patches/glibc-ppc64le-11.patch
\ No newline at end of file
diff --git a/0_RootFS/GCCBootstrap@11-IainS/bundled/patches/glibc-ppc64le-12.patch b/0_RootFS/GCCBootstrap@11-IainS/bundled/patches/glibc-ppc64le-12.patch
new file mode 120000
index 00000000000..5c61ae4d308
--- /dev/null
+++ b/0_RootFS/GCCBootstrap@11-IainS/bundled/patches/glibc-ppc64le-12.patch
@@ -0,0 +1 @@
+../../../GCCBootstrap@4/bundled/patches/glibc-ppc64le-12.patch
\ No newline at end of file
diff --git a/0_RootFS/GCCBootstrap@11-IainS/bundled/patches/glibc-ppc64le-13.patch b/0_RootFS/GCCBootstrap@11-IainS/bundled/patches/glibc-ppc64le-13.patch
new file mode 120000
index 00000000000..9fcd14da248
--- /dev/null
+++ b/0_RootFS/GCCBootstrap@11-IainS/bundled/patches/glibc-ppc64le-13.patch
@@ -0,0 +1 @@
+../../../GCCBootstrap@4/bundled/patches/glibc-ppc64le-13.patch
\ No newline at end of file
diff --git a/0_RootFS/GCCBootstrap@11-IainS/bundled/patches/glibc-ppc64le-14.patch b/0_RootFS/GCCBootstrap@11-IainS/bundled/patches/glibc-ppc64le-14.patch
new file mode 120000
index 00000000000..2c105860a79
--- /dev/null
+++ b/0_RootFS/GCCBootstrap@11-IainS/bundled/patches/glibc-ppc64le-14.patch
@@ -0,0 +1 @@
+../../../GCCBootstrap@4/bundled/patches/glibc-ppc64le-14.patch
\ No newline at end of file
diff --git a/0_RootFS/GCCBootstrap@11-IainS/bundled/patches/glibc-ppc64le-15.patch b/0_RootFS/GCCBootstrap@11-IainS/bundled/patches/glibc-ppc64le-15.patch
new file mode 120000
index 00000000000..553e804d24c
--- /dev/null
+++ b/0_RootFS/GCCBootstrap@11-IainS/bundled/patches/glibc-ppc64le-15.patch
@@ -0,0 +1 @@
+../../../GCCBootstrap@4/bundled/patches/glibc-ppc64le-15.patch
\ No newline at end of file
diff --git a/0_RootFS/GCCBootstrap@11-IainS/bundled/patches/glibc-ppc64le-16.patch b/0_RootFS/GCCBootstrap@11-IainS/bundled/patches/glibc-ppc64le-16.patch
new file mode 120000
index 00000000000..45b396e6e16
--- /dev/null
+++ b/0_RootFS/GCCBootstrap@11-IainS/bundled/patches/glibc-ppc64le-16.patch
@@ -0,0 +1 @@
+../../../GCCBootstrap@4/bundled/patches/glibc-ppc64le-16.patch
\ No newline at end of file
diff --git a/0_RootFS/GCCBootstrap@11-IainS/bundled/patches/glibc-ppc64le-17.patch b/0_RootFS/GCCBootstrap@11-IainS/bundled/patches/glibc-ppc64le-17.patch
new file mode 120000
index 00000000000..381198312d8
--- /dev/null
+++ b/0_RootFS/GCCBootstrap@11-IainS/bundled/patches/glibc-ppc64le-17.patch
@@ -0,0 +1 @@
+../../../GCCBootstrap@4/bundled/patches/glibc-ppc64le-17.patch
\ No newline at end of file
diff --git a/0_RootFS/GCCBootstrap@11-IainS/bundled/patches/glibc-ppc64le-18.patch b/0_RootFS/GCCBootstrap@11-IainS/bundled/patches/glibc-ppc64le-18.patch
new file mode 120000
index 00000000000..75da139edca
--- /dev/null
+++ b/0_RootFS/GCCBootstrap@11-IainS/bundled/patches/glibc-ppc64le-18.patch
@@ -0,0 +1 @@
+../../../GCCBootstrap@4/bundled/patches/glibc-ppc64le-18.patch
\ No newline at end of file
diff --git a/0_RootFS/GCCBootstrap@11-IainS/bundled/patches/glibc-ppc64le-19.patch b/0_RootFS/GCCBootstrap@11-IainS/bundled/patches/glibc-ppc64le-19.patch
new file mode 120000
index 00000000000..15b94428f84
--- /dev/null
+++ b/0_RootFS/GCCBootstrap@11-IainS/bundled/patches/glibc-ppc64le-19.patch
@@ -0,0 +1 @@
+../../../GCCBootstrap@4/bundled/patches/glibc-ppc64le-19.patch
\ No newline at end of file
diff --git a/0_RootFS/GCCBootstrap@11-IainS/bundled/patches/glibc-ppc64le-20.patch b/0_RootFS/GCCBootstrap@11-IainS/bundled/patches/glibc-ppc64le-20.patch
new file mode 120000
index 00000000000..363da6ff21d
--- /dev/null
+++ b/0_RootFS/GCCBootstrap@11-IainS/bundled/patches/glibc-ppc64le-20.patch
@@ -0,0 +1 @@
+../../../GCCBootstrap@4/bundled/patches/glibc-ppc64le-20.patch
\ No newline at end of file
diff --git a/0_RootFS/GCCBootstrap@11-IainS/bundled/patches/glibc-ppc64le-21.patch b/0_RootFS/GCCBootstrap@11-IainS/bundled/patches/glibc-ppc64le-21.patch
new file mode 120000
index 00000000000..d0b5d34df23
--- /dev/null
+++ b/0_RootFS/GCCBootstrap@11-IainS/bundled/patches/glibc-ppc64le-21.patch
@@ -0,0 +1 @@
+../../../GCCBootstrap@4/bundled/patches/glibc-ppc64le-21.patch
\ No newline at end of file
diff --git a/0_RootFS/GCCBootstrap@11-IainS/bundled/patches/glibc-ppc64le-22.patch b/0_RootFS/GCCBootstrap@11-IainS/bundled/patches/glibc-ppc64le-22.patch
new file mode 120000
index 00000000000..e33401a61ec
--- /dev/null
+++ b/0_RootFS/GCCBootstrap@11-IainS/bundled/patches/glibc-ppc64le-22.patch
@@ -0,0 +1 @@
+../../../GCCBootstrap@4/bundled/patches/glibc-ppc64le-22.patch
\ No newline at end of file
diff --git a/0_RootFS/GCCBootstrap@11-IainS/bundled/patches/glibc-ppc64le-23.patch b/0_RootFS/GCCBootstrap@11-IainS/bundled/patches/glibc-ppc64le-23.patch
new file mode 120000
index 00000000000..e17c24162a4
--- /dev/null
+++ b/0_RootFS/GCCBootstrap@11-IainS/bundled/patches/glibc-ppc64le-23.patch
@@ -0,0 +1 @@
+../../../GCCBootstrap@4/bundled/patches/glibc-ppc64le-23.patch
\ No newline at end of file
diff --git a/0_RootFS/GCCBootstrap@11-IainS/bundled/patches/glibc-ppc64le-24.patch b/0_RootFS/GCCBootstrap@11-IainS/bundled/patches/glibc-ppc64le-24.patch
new file mode 120000
index 00000000000..dabf39e7b9c
--- /dev/null
+++ b/0_RootFS/GCCBootstrap@11-IainS/bundled/patches/glibc-ppc64le-24.patch
@@ -0,0 +1 @@
+../../../GCCBootstrap@4/bundled/patches/glibc-ppc64le-24.patch
\ No newline at end of file
diff --git a/0_RootFS/GCCBootstrap@11-IainS/bundled/patches/glibc-ppc64le-25.patch b/0_RootFS/GCCBootstrap@11-IainS/bundled/patches/glibc-ppc64le-25.patch
new file mode 120000
index 00000000000..a1013682f68
--- /dev/null
+++ b/0_RootFS/GCCBootstrap@11-IainS/bundled/patches/glibc-ppc64le-25.patch
@@ -0,0 +1 @@
+../../../GCCBootstrap@4/bundled/patches/glibc-ppc64le-25.patch
\ No newline at end of file
diff --git a/0_RootFS/GCCBootstrap@11-IainS/bundled/patches/glibc-ppc64le-26.patch b/0_RootFS/GCCBootstrap@11-IainS/bundled/patches/glibc-ppc64le-26.patch
new file mode 120000
index 00000000000..9d6541b9b82
--- /dev/null
+++ b/0_RootFS/GCCBootstrap@11-IainS/bundled/patches/glibc-ppc64le-26.patch
@@ -0,0 +1 @@
+../../../GCCBootstrap@4/bundled/patches/glibc-ppc64le-26.patch
\ No newline at end of file
diff --git a/0_RootFS/GCCBootstrap@11-IainS/bundled/patches/glibc-ppc64le-27.patch b/0_RootFS/GCCBootstrap@11-IainS/bundled/patches/glibc-ppc64le-27.patch
new file mode 120000
index 00000000000..b4b0172a637
--- /dev/null
+++ b/0_RootFS/GCCBootstrap@11-IainS/bundled/patches/glibc-ppc64le-27.patch
@@ -0,0 +1 @@
+../../../GCCBootstrap@4/bundled/patches/glibc-ppc64le-27.patch
\ No newline at end of file
diff --git a/0_RootFS/GCCBootstrap@11-IainS/bundled/patches/glibc-ppc64le-28.patch b/0_RootFS/GCCBootstrap@11-IainS/bundled/patches/glibc-ppc64le-28.patch
new file mode 120000
index 00000000000..422f6eab38f
--- /dev/null
+++ b/0_RootFS/GCCBootstrap@11-IainS/bundled/patches/glibc-ppc64le-28.patch
@@ -0,0 +1 @@
+../../../GCCBootstrap@4/bundled/patches/glibc-ppc64le-28.patch
\ No newline at end of file
diff --git a/0_RootFS/GCCBootstrap@11-IainS/bundled/patches/glibc-ppc64le-29.patch b/0_RootFS/GCCBootstrap@11-IainS/bundled/patches/glibc-ppc64le-29.patch
new file mode 120000
index 00000000000..29c53da8ea3
--- /dev/null
+++ b/0_RootFS/GCCBootstrap@11-IainS/bundled/patches/glibc-ppc64le-29.patch
@@ -0,0 +1 @@
+../../../GCCBootstrap@4/bundled/patches/glibc-ppc64le-29.patch
\ No newline at end of file
diff --git a/0_RootFS/GCCBootstrap@11-IainS/bundled/patches/glibc-ppc64le-30.patch b/0_RootFS/GCCBootstrap@11-IainS/bundled/patches/glibc-ppc64le-30.patch
new file mode 120000
index 00000000000..6d532a56d8d
--- /dev/null
+++ b/0_RootFS/GCCBootstrap@11-IainS/bundled/patches/glibc-ppc64le-30.patch
@@ -0,0 +1 @@
+../../../GCCBootstrap@4/bundled/patches/glibc-ppc64le-30.patch
\ No newline at end of file
diff --git a/0_RootFS/GCCBootstrap@11-IainS/bundled/patches/glibc-ppc64le-31.patch b/0_RootFS/GCCBootstrap@11-IainS/bundled/patches/glibc-ppc64le-31.patch
new file mode 120000
index 00000000000..9b06be66e43
--- /dev/null
+++ b/0_RootFS/GCCBootstrap@11-IainS/bundled/patches/glibc-ppc64le-31.patch
@@ -0,0 +1 @@
+../../../GCCBootstrap@4/bundled/patches/glibc-ppc64le-31.patch
\ No newline at end of file
diff --git a/0_RootFS/GCCBootstrap@11-IainS/bundled/patches/glibc-ppc64le-32.patch b/0_RootFS/GCCBootstrap@11-IainS/bundled/patches/glibc-ppc64le-32.patch
new file mode 120000
index 00000000000..ed3e7f02517
--- /dev/null
+++ b/0_RootFS/GCCBootstrap@11-IainS/bundled/patches/glibc-ppc64le-32.patch
@@ -0,0 +1 @@
+../../../GCCBootstrap@4/bundled/patches/glibc-ppc64le-32.patch
\ No newline at end of file
diff --git a/0_RootFS/GCCBootstrap@11-IainS/bundled/patches/glibc-ppc64le-33.patch b/0_RootFS/GCCBootstrap@11-IainS/bundled/patches/glibc-ppc64le-33.patch
new file mode 120000
index 00000000000..468c085f789
--- /dev/null
+++ b/0_RootFS/GCCBootstrap@11-IainS/bundled/patches/glibc-ppc64le-33.patch
@@ -0,0 +1 @@
+../../../GCCBootstrap@4/bundled/patches/glibc-ppc64le-33.patch
\ No newline at end of file
diff --git a/0_RootFS/GCCBootstrap@11-IainS/bundled/patches/glibc-ppc64le-34.patch b/0_RootFS/GCCBootstrap@11-IainS/bundled/patches/glibc-ppc64le-34.patch
new file mode 120000
index 00000000000..58778f0e720
--- /dev/null
+++ b/0_RootFS/GCCBootstrap@11-IainS/bundled/patches/glibc-ppc64le-34.patch
@@ -0,0 +1 @@
+../../../GCCBootstrap@4/bundled/patches/glibc-ppc64le-34.patch
\ No newline at end of file
diff --git a/0_RootFS/GCCBootstrap@11-IainS/bundled/patches/glibc-ppc64le-35.patch b/0_RootFS/GCCBootstrap@11-IainS/bundled/patches/glibc-ppc64le-35.patch
new file mode 120000
index 00000000000..07ea002e01f
--- /dev/null
+++ b/0_RootFS/GCCBootstrap@11-IainS/bundled/patches/glibc-ppc64le-35.patch
@@ -0,0 +1 @@
+../../../GCCBootstrap@4/bundled/patches/glibc-ppc64le-35.patch
\ No newline at end of file
diff --git a/0_RootFS/GCCBootstrap@11-IainS/bundled/patches/glibc-ppc64le-36.patch b/0_RootFS/GCCBootstrap@11-IainS/bundled/patches/glibc-ppc64le-36.patch
new file mode 120000
index 00000000000..3bc5b0034c8
--- /dev/null
+++ b/0_RootFS/GCCBootstrap@11-IainS/bundled/patches/glibc-ppc64le-36.patch
@@ -0,0 +1 @@
+../../../GCCBootstrap@4/bundled/patches/glibc-ppc64le-36.patch
\ No newline at end of file
diff --git a/0_RootFS/GCCBootstrap@11-IainS/bundled/patches/glibc-ppc64le-37.patch b/0_RootFS/GCCBootstrap@11-IainS/bundled/patches/glibc-ppc64le-37.patch
new file mode 120000
index 00000000000..84f35423e52
--- /dev/null
+++ b/0_RootFS/GCCBootstrap@11-IainS/bundled/patches/glibc-ppc64le-37.patch
@@ -0,0 +1 @@
+../../../GCCBootstrap@4/bundled/patches/glibc-ppc64le-37.patch
\ No newline at end of file
diff --git a/0_RootFS/GCCBootstrap@11-IainS/bundled/patches/glibc-ppc64le-38.patch b/0_RootFS/GCCBootstrap@11-IainS/bundled/patches/glibc-ppc64le-38.patch
new file mode 120000
index 00000000000..dc2041a6dfe
--- /dev/null
+++ b/0_RootFS/GCCBootstrap@11-IainS/bundled/patches/glibc-ppc64le-38.patch
@@ -0,0 +1 @@
+../../../GCCBootstrap@4/bundled/patches/glibc-ppc64le-38.patch
\ No newline at end of file
diff --git a/0_RootFS/GCCBootstrap@11-IainS/bundled/patches/glibc-ppc64le-39.patch b/0_RootFS/GCCBootstrap@11-IainS/bundled/patches/glibc-ppc64le-39.patch
new file mode 120000
index 00000000000..edcdb4e0660
--- /dev/null
+++ b/0_RootFS/GCCBootstrap@11-IainS/bundled/patches/glibc-ppc64le-39.patch
@@ -0,0 +1 @@
+../../../GCCBootstrap@4/bundled/patches/glibc-ppc64le-39.patch
\ No newline at end of file
diff --git a/0_RootFS/GCCBootstrap@11-IainS/bundled/patches/glibc-ppc64le-40.patch b/0_RootFS/GCCBootstrap@11-IainS/bundled/patches/glibc-ppc64le-40.patch
new file mode 120000
index 00000000000..d6664bac3ae
--- /dev/null
+++ b/0_RootFS/GCCBootstrap@11-IainS/bundled/patches/glibc-ppc64le-40.patch
@@ -0,0 +1 @@
+../../../GCCBootstrap@4/bundled/patches/glibc-ppc64le-40.patch
\ No newline at end of file
diff --git a/0_RootFS/GCCBootstrap@11-IainS/bundled/patches/glibc-ppc64le-41.patch b/0_RootFS/GCCBootstrap@11-IainS/bundled/patches/glibc-ppc64le-41.patch
new file mode 120000
index 00000000000..024e01a1d93
--- /dev/null
+++ b/0_RootFS/GCCBootstrap@11-IainS/bundled/patches/glibc-ppc64le-41.patch
@@ -0,0 +1 @@
+../../../GCCBootstrap@4/bundled/patches/glibc-ppc64le-41.patch
\ No newline at end of file
diff --git a/0_RootFS/GCCBootstrap@11-IainS/bundled/patches/glibc-ppc64le-42.patch b/0_RootFS/GCCBootstrap@11-IainS/bundled/patches/glibc-ppc64le-42.patch
new file mode 120000
index 00000000000..cc626e8bd3e
--- /dev/null
+++ b/0_RootFS/GCCBootstrap@11-IainS/bundled/patches/glibc-ppc64le-42.patch
@@ -0,0 +1 @@
+../../../GCCBootstrap@4/bundled/patches/glibc-ppc64le-42.patch
\ No newline at end of file
diff --git a/0_RootFS/GCCBootstrap@11-IainS/bundled/patches/glibc-ppc64le-43.patch b/0_RootFS/GCCBootstrap@11-IainS/bundled/patches/glibc-ppc64le-43.patch
new file mode 120000
index 00000000000..78508bdced4
--- /dev/null
+++ b/0_RootFS/GCCBootstrap@11-IainS/bundled/patches/glibc-ppc64le-43.patch
@@ -0,0 +1 @@
+../../../GCCBootstrap@4/bundled/patches/glibc-ppc64le-43.patch
\ No newline at end of file
diff --git a/0_RootFS/GCCBootstrap@11-IainS/bundled/patches/glibc-ppc64le-44.patch b/0_RootFS/GCCBootstrap@11-IainS/bundled/patches/glibc-ppc64le-44.patch
new file mode 120000
index 00000000000..abc87cc7705
--- /dev/null
+++ b/0_RootFS/GCCBootstrap@11-IainS/bundled/patches/glibc-ppc64le-44.patch
@@ -0,0 +1 @@
+../../../GCCBootstrap@4/bundled/patches/glibc-ppc64le-44.patch
\ No newline at end of file
diff --git a/0_RootFS/GCCBootstrap@11-IainS/bundled/patches/glibc-ppc64le-45.patch b/0_RootFS/GCCBootstrap@11-IainS/bundled/patches/glibc-ppc64le-45.patch
new file mode 120000
index 00000000000..546a75ecf8b
--- /dev/null
+++ b/0_RootFS/GCCBootstrap@11-IainS/bundled/patches/glibc-ppc64le-45.patch
@@ -0,0 +1 @@
+../../../GCCBootstrap@4/bundled/patches/glibc-ppc64le-45.patch
\ No newline at end of file
diff --git a/0_RootFS/GCCBootstrap@11-IainS/bundled/patches/glibc-ppc64le-46.patch b/0_RootFS/GCCBootstrap@11-IainS/bundled/patches/glibc-ppc64le-46.patch
new file mode 120000
index 00000000000..651cb9e3cca
--- /dev/null
+++ b/0_RootFS/GCCBootstrap@11-IainS/bundled/patches/glibc-ppc64le-46.patch
@@ -0,0 +1 @@
+../../../GCCBootstrap@4/bundled/patches/glibc-ppc64le-46.patch
\ No newline at end of file
diff --git a/0_RootFS/GCCBootstrap@11-IainS/bundled/patches/glibc-ppc64le-47-pwr6-mtfsf.patch b/0_RootFS/GCCBootstrap@11-IainS/bundled/patches/glibc-ppc64le-47-pwr6-mtfsf.patch
new file mode 120000
index 00000000000..8c086355317
--- /dev/null
+++ b/0_RootFS/GCCBootstrap@11-IainS/bundled/patches/glibc-ppc64le-47-pwr6-mtfsf.patch
@@ -0,0 +1 @@
+../../../GCCBootstrap@4/bundled/patches/glibc-ppc64le-47-pwr6-mtfsf.patch
\ No newline at end of file
diff --git a/0_RootFS/GCCBootstrap@11-IainS/bundled/patches/glibc-ppc64le-48-ldbl_high.patch b/0_RootFS/GCCBootstrap@11-IainS/bundled/patches/glibc-ppc64le-48-ldbl_high.patch
new file mode 120000
index 00000000000..d6f0ec0b0f2
--- /dev/null
+++ b/0_RootFS/GCCBootstrap@11-IainS/bundled/patches/glibc-ppc64le-48-ldbl_high.patch
@@ -0,0 +1 @@
+../../../GCCBootstrap@4/bundled/patches/glibc-ppc64le-48-ldbl_high.patch
\ No newline at end of file
diff --git a/0_RootFS/GCCBootstrap@11-IainS/bundled/patches/glibc_aarch64_relocation.patch b/0_RootFS/GCCBootstrap@11-IainS/bundled/patches/glibc_aarch64_relocation.patch
new file mode 120000
index 00000000000..23af0beaecb
--- /dev/null
+++ b/0_RootFS/GCCBootstrap@11-IainS/bundled/patches/glibc_aarch64_relocation.patch
@@ -0,0 +1 @@
+../../../GCCBootstrap@4/bundled/patches/glibc_aarch64_relocation.patch
\ No newline at end of file
diff --git a/0_RootFS/GCCBootstrap@11-IainS/bundled/patches/glibc_arm_gcc_fix.patch b/0_RootFS/GCCBootstrap@11-IainS/bundled/patches/glibc_arm_gcc_fix.patch
new file mode 120000
index 00000000000..13167359553
--- /dev/null
+++ b/0_RootFS/GCCBootstrap@11-IainS/bundled/patches/glibc_arm_gcc_fix.patch
@@ -0,0 +1 @@
+../../../GCCBootstrap@4/bundled/patches/glibc_arm_gcc_fix.patch
\ No newline at end of file
diff --git a/0_RootFS/GCCBootstrap@11-IainS/bundled/patches/glibc_fix_obstack_compat.diff b/0_RootFS/GCCBootstrap@11-IainS/bundled/patches/glibc_fix_obstack_compat.diff
new file mode 120000
index 00000000000..70585b85098
--- /dev/null
+++ b/0_RootFS/GCCBootstrap@11-IainS/bundled/patches/glibc_fix_obstack_compat.diff
@@ -0,0 +1 @@
+../../../GCCBootstrap@4/bundled/patches/glibc_fix_obstack_compat.diff
\ No newline at end of file
diff --git a/0_RootFS/GCCBootstrap@11-IainS/bundled/patches/glibc_gcc_version.patch b/0_RootFS/GCCBootstrap@11-IainS/bundled/patches/glibc_gcc_version.patch
new file mode 120000
index 00000000000..473f7a525d9
--- /dev/null
+++ b/0_RootFS/GCCBootstrap@11-IainS/bundled/patches/glibc_gcc_version.patch
@@ -0,0 +1 @@
+../../../GCCBootstrap@4/bundled/patches/glibc_gcc_version.patch
\ No newline at end of file
diff --git a/0_RootFS/GCCBootstrap@11-IainS/bundled/patches/glibc_i686_asm.patch b/0_RootFS/GCCBootstrap@11-IainS/bundled/patches/glibc_i686_asm.patch
new file mode 120000
index 00000000000..35f065f0d0d
--- /dev/null
+++ b/0_RootFS/GCCBootstrap@11-IainS/bundled/patches/glibc_i686_asm.patch
@@ -0,0 +1 @@
+../../../GCCBootstrap@4/bundled/patches/glibc_i686_asm.patch
\ No newline at end of file
diff --git a/0_RootFS/GCCBootstrap@11-IainS/bundled/patches/glibc_musl_rejection.patch b/0_RootFS/GCCBootstrap@11-IainS/bundled/patches/glibc_musl_rejection.patch
new file mode 120000
index 00000000000..81a4040c7fd
--- /dev/null
+++ b/0_RootFS/GCCBootstrap@11-IainS/bundled/patches/glibc_musl_rejection.patch
@@ -0,0 +1 @@
+../../../GCCBootstrap@4/bundled/patches/glibc_musl_rejection.patch
\ No newline at end of file
diff --git a/0_RootFS/GCCBootstrap@11-IainS/bundled/patches/glibc_musl_rejection_old.patch b/0_RootFS/GCCBootstrap@11-IainS/bundled/patches/glibc_musl_rejection_old.patch
new file mode 120000
index 00000000000..31d164c349c
--- /dev/null
+++ b/0_RootFS/GCCBootstrap@11-IainS/bundled/patches/glibc_musl_rejection_old.patch
@@ -0,0 +1 @@
+../../../GCCBootstrap@4/bundled/patches/glibc_musl_rejection_old.patch
\ No newline at end of file
diff --git a/0_RootFS/GCCBootstrap@11-IainS/bundled/patches/glibc_nocommon.patch b/0_RootFS/GCCBootstrap@11-IainS/bundled/patches/glibc_nocommon.patch
new file mode 120000
index 00000000000..5b375100acb
--- /dev/null
+++ b/0_RootFS/GCCBootstrap@11-IainS/bundled/patches/glibc_nocommon.patch
@@ -0,0 +1 @@
+../../../GCCBootstrap@4/bundled/patches/glibc_nocommon.patch
\ No newline at end of file
diff --git a/0_RootFS/GCCBootstrap@11-IainS/bundled/patches/glibc_powerpc64le_gcc_fix.patch b/0_RootFS/GCCBootstrap@11-IainS/bundled/patches/glibc_powerpc64le_gcc_fix.patch
new file mode 120000
index 00000000000..206ed74aa45
--- /dev/null
+++ b/0_RootFS/GCCBootstrap@11-IainS/bundled/patches/glibc_powerpc64le_gcc_fix.patch
@@ -0,0 +1 @@
+../../../GCCBootstrap@4/bundled/patches/glibc_powerpc64le_gcc_fix.patch
\ No newline at end of file
diff --git a/0_RootFS/GCCBootstrap@11-IainS/bundled/patches/glibc_regexp_nocommon.patch b/0_RootFS/GCCBootstrap@11-IainS/bundled/patches/glibc_regexp_nocommon.patch
new file mode 120000
index 00000000000..1a10ef2694b
--- /dev/null
+++ b/0_RootFS/GCCBootstrap@11-IainS/bundled/patches/glibc_regexp_nocommon.patch
@@ -0,0 +1 @@
+../../../GCCBootstrap@4/bundled/patches/glibc_regexp_nocommon.patch
\ No newline at end of file
diff --git a/0_RootFS/GCCBootstrap@11-IainS/bundled/patches/glibc_sunrpc.patch b/0_RootFS/GCCBootstrap@11-IainS/bundled/patches/glibc_sunrpc.patch
new file mode 120000
index 00000000000..9359558d4e0
--- /dev/null
+++ b/0_RootFS/GCCBootstrap@11-IainS/bundled/patches/glibc_sunrpc.patch
@@ -0,0 +1 @@
+../../../GCCBootstrap@4/bundled/patches/glibc_sunrpc.patch
\ No newline at end of file
diff --git a/0_RootFS/GCCBootstrap@11-IainS/bundled/patches/libtapi_musl.patch b/0_RootFS/GCCBootstrap@11-IainS/bundled/patches/libtapi_musl.patch
new file mode 120000
index 00000000000..435ae951cdc
--- /dev/null
+++ b/0_RootFS/GCCBootstrap@11-IainS/bundled/patches/libtapi_musl.patch
@@ -0,0 +1 @@
+../../../GCCBootstrap@4/bundled/patches/libtapi_musl.patch
\ No newline at end of file
diff --git a/0_RootFS/GCCBootstrap@11-IainS/bundled/patches/mingw_gcc710_i686.patch b/0_RootFS/GCCBootstrap@11-IainS/bundled/patches/mingw_gcc710_i686.patch
new file mode 120000
index 00000000000..94de400d805
--- /dev/null
+++ b/0_RootFS/GCCBootstrap@11-IainS/bundled/patches/mingw_gcc710_i686.patch
@@ -0,0 +1 @@
+../../../GCCBootstrap@4/bundled/patches/mingw_gcc710_i686.patch
\ No newline at end of file
diff --git a/0_RootFS/PlatformSupport/build_tarballs.jl b/0_RootFS/PlatformSupport/build_tarballs.jl
index 0ef51f8c7b9..cbbbc8b09de 100644
--- a/0_RootFS/PlatformSupport/build_tarballs.jl
+++ b/0_RootFS/PlatformSupport/build_tarballs.jl
@@ -17,8 +17,6 @@ sources = [
                   "b5de28fd594a01edacd06e53491ad0890293e5fbf98329346426cf6030ef1ea6"),
     ArchiveSource("https://sourceforge.net/projects/mingw-w64/files/mingw-w64/mingw-w64-release/mingw-w64-v7.0.0.tar.bz2",
                   "aa20dfff3596f08a7f427aab74315a6cb80c2b086b4a107ed35af02f9496b628"),
-    ArchiveSource("https://github.com/phracker/MacOSX-SDKs/releases/download/10.15/MacOSX10.12.sdk.tar.xz",
-                  "6852728af94399193599a55d00ae9c4a900925b6431534a3816496b354926774"),
     ArchiveSource("https://download.freebsd.org/ftp/releases/amd64/11.4-RELEASE/base.txz",
                   "3bac8257bdd5e5b071f7b80cc591ebecd01b9314ca7839a2903096cbf82169f9"),
     ArchiveSource("https://github.com/llvm/llvm-project/releases/download/llvmorg-8.0.1/libcxx-8.0.1.src.tar.xz",
@@ -26,6 +24,13 @@ sources = [
     DirectorySource("./bundled"),
 ]
 
+if compiler_target isa MacOS && compiler_target.arch == :aarch64
+    push!(sources, DirectorySource(joinpath(@__DIR__, "..", "DarwinSDKs")))
+else
+    push!(sources, ArchiveSource("https://github.com/phracker/MacOSX-SDKs/releases/download/10.15/MacOSX10.12.sdk.tar.xz",
+        "6852728af94399193599a55d00ae9c4a900925b6431534a3816496b354926774"))
+end
+
 script = "COMPILER_TARGET=$(BinaryBuilder.aatriplet(compiler_target))\n" * raw"""
 ## Function to take in a target such as `aarch64-linux-gnu`` and spit out a
 ## linux kernel arch like "arm64".
diff --git a/0_RootFS/gcc_common.jl b/0_RootFS/gcc_common.jl
index 725284802b3..382f9da7cd5 100644
--- a/0_RootFS/gcc_common.jl
+++ b/0_RootFS/gcc_common.jl
@@ -78,6 +78,18 @@ function gcc_sources(gcc_version::VersionNumber, compiler_target::Platform; kwar
             ArchiveSource("https://mirrors.kernel.org/gnu/gmp/gmp-6.1.2.tar.xz",
                           "87b565e89a9a684fe4ebeeddb8399dce2599f9c9049854ca8c0dfbdea0e21912"),
         ],
+        v"11.0.0-iains" => [
+            GitSource("https://github.com/iains/gcc-darwin-arm64.git",
+                  "03d8ff79b7a2d408db953667f81f76c0b8da26f0"),
+            ArchiveSource("https://mirrors.kernel.org/gnu/mpfr/mpfr-4.0.1.tar.xz",
+                          "67874a60826303ee2fb6affc6dc0ddd3e749e9bfcb4c8655e3953d0458a6e16e"),
+            ArchiveSource("https://mirrors.kernel.org/gnu/mpc/mpc-1.1.0.tar.gz",
+                          "6985c538143c1208dcb1ac42cedad6ff52e267b47e5f970183a3e75125b43c2e"),
+            ArchiveSource("https://gcc.gnu.org/pub/gcc/infrastructure/isl-0.18.tar.bz2",
+                          "6b8b0fd7f81d0a957beb3679c81bbb34ccc7568d5682844d8924424a0dadcb1b"),
+            ArchiveSource("https://mirrors.kernel.org/gnu/gmp/gmp-6.1.2.tar.xz",
+                          "87b565e89a9a684fe4ebeeddb8399dce2599f9c9049854ca8c0dfbdea0e21912"),
+        ]
     )
 
 
@@ -159,10 +171,16 @@ function gcc_sources(gcc_version::VersionNumber, compiler_target::Platform; kwar
                           "db59a8578226b98373f5b27e61f0dd29ad2456f4aa9cec587ba8c24508e4c1d9"),
         ]
     elseif isa(compiler_target, MacOS)
-        libc_sources = [
-            ArchiveSource("https://github.com/phracker/MacOSX-SDKs/releases/download/10.15/MacOSX10.12.sdk.tar.xz",
+        if gcc_version == v"11.0.0-iains"
+            libc_sources = [
+                DirectorySource(joinpath(@__DIR__, "DarwinSDKs"))
+            ]
+        else
+            libc_sources = [
+                ArchiveSource("https://github.com/phracker/MacOSX-SDKs/releases/download/10.15/MacOSX10.12.sdk.tar.xz",
                           "6852728af94399193599a55d00ae9c4a900925b6431534a3816496b354926774"),
-        ]
+            ]
+        end
     elseif isa(compiler_target, FreeBSD)
         libc_sources = [
             ArchiveSource("https://download.freebsd.org/ftp/releases/amd64/11.4-RELEASE/base.txz",