Add script to repack Boost, patch it and remove extra files

Extra files are for example documentation files to slim down the archive to download and the number of files a lot.
Down from 71MB to 22MB.

patch/1.63.0/context_0001_arm64_cpu.patch

@@ -0,0 +1,47 @@
+From 26b61a67cf1d384796e5ae2f207c5b6fa56015e5 Mon Sep 17 00:00:00 2001
+From: Oliver Kowalke <[email protected]>
+Date: Thu, 5 Jan 2017 10:38:47 -0800
+Subject: [PATCH] remove directive '.cpu' for ARM64/AAPCS/ELF
+
+---
+ src/asm/jump_arm64_aapcs_elf_gas.S  | 1 -
+ src/asm/make_arm64_aapcs_elf_gas.S  | 1 -
+ src/asm/ontop_arm64_aapcs_elf_gas.S | 1 -
+ 3 files changed, 3 deletions(-)
+
+diff --git a/libs/context/src/asm/jump_arm64_aapcs_elf_gas.S b/libs/context/src/asm/jump_arm64_aapcs_elf_gas.S
+index 7c0c2fa..1b8ce9e 100644
+--- a/libs/context/src/asm/jump_arm64_aapcs_elf_gas.S
++++ b/libs/context/src/asm/jump_arm64_aapcs_elf_gas.S
+@@ -51,7 +51,6 @@
+  *                                                     *
+  *******************************************************/
+
+-.cpu    generic+fp+simd
+ .text
+ .align  2
+ .global jump_fcontext
+diff --git a/libs/context/src/asm/make_arm64_aapcs_elf_gas.S b/libs/context/src/asm/make_arm64_aapcs_elf_gas.S
+index e71a91c..c1fa843 100644
+--- a/libs/context/src/asm/make_arm64_aapcs_elf_gas.S
++++ b/libs/context/src/asm/make_arm64_aapcs_elf_gas.S
+@@ -51,7 +51,6 @@
+  *                                                     *
+  *******************************************************/
+
+-.cpu    generic+fp+simd
+ .text
+ .align  2
+ .global make_fcontext
+diff --git a/libs/context/src/asm/ontop_arm64_aapcs_elf_gas.S b/libs/context/src/asm/ontop_arm64_aapcs_elf_gas.S
+index 7e3b047..02a3b07 100644
+--- a/libs/context/src/asm/ontop_arm64_aapcs_elf_gas.S
++++ b/libs/context/src/asm/ontop_arm64_aapcs_elf_gas.S
+@@ -51,7 +51,6 @@
+  *                                                     *
+  *******************************************************/
+
+-.cpu    generic+fp+simd
+ .text
+ .align  2
+ .global ontop_fcontext

patch/1.63.0/context_0002_macOS_execution_context.patch

@@ -0,0 +1,23 @@
+From 3167d4dfb82aa74fcf41c755d6c9bc7a3401bfea Mon Sep 17 00:00:00 2001
+From: Timo Sandmann <[email protected]>
+Date: Sun, 8 Jan 2017 18:24:20 +0100
+Subject: [PATCH] Fixes #38
+
+Use correct type cast and tuple extracting for pointer to transfered data tuples
+---
+ include/boost/context/execution_context_v2.hpp | 2 +-
+ 1 file changed, 1 insertion(+), 1 deletion(-)
+
+diff --git a/boost/context/execution_context_v2.hpp b/boost/context/execution_context_v2.hpp
+index 33b9bda..bbd4eb1 100644
+--- a/boost/context/execution_context_v2.hpp
++++ b/boost/context/execution_context_v2.hpp
+@@ -103,7 +103,7 @@ class record {
+
+     transfer_t run( transfer_t t) {
+         Ctx from{ t.fctx };
+-        typename Ctx::args_tpl_t args = std::move( * static_cast< typename Ctx::args_tpl_t * >( t.data) );
++        typename Ctx::args_tpl_t args = std::move( std::get<1>( * static_cast< std::tuple< std::exception_ptr, typename Ctx::args_tpl_t > * >( t.data) ) );
+         auto tpl = std::tuple_cat(
+                     params_,
+                     std::forward_as_tuple( std::move( from) ),

repack.sh

@@ -0,0 +1,41 @@
+#!/usr/bin/env bash
+
+set -e
+
+BOOST_VERSION=1.63.0
+
+function finish {
+  rm -rf ${tmp_dir}
+}
+trap finish EXIT
+
+out_dir=$(pwd)
+patch_dir=$(pwd)/patch/${BOOST_VERSION}
+tmp_dir=$(mktemp -d)
+
+echo "Downloading Boost ${BOOST_VERSION}..."
+curl -L "http://downloads.sourceforge.net/project/boost/boost/${BOOST_VERSION}/boost_${BOOST_VERSION//./_}.tar.bz2" > ${tmp_dir}/boost_${BOOST_VERSION}.tar.bz2
+
+mkdir -p ${tmp_dir}/extract
+cd ${tmp_dir}/extract
+echo "Extracting archive..."
+tar xf ${tmp_dir}/boost_${BOOST_VERSION}.tar.bz2
+
+cd boost_*
+mkdir patch
+for f in ${patch_dir}/*.patch; do
+  echo "Applying patch ${f}..."
+  git apply --verbose $f
+  cp $f patch/
+done
+
+echo "Removing extra files..."
+find . -name "doc" -print0 | xargs -0 -- rm -rf
+find . -name "*.htm*" -delete
+find . -name "*.png" -delete
+find . -name "*.bmp" -delete
+find . -name "*.jpg" -delete
+
+cd ..
+echo "Recompressing archive..."
+tar cfJ ${out_dir}/boost_${BOOST_VERSION//./_}.tar.xz boost_*