build: Add toolchain

toolchain/Dockerfile

@@ -0,0 +1,42 @@
+FROM debian:buster-slim
+ENV DEBIAN_FRONTEND noninteractive
+
+ENV TZ=America/New_York
+RUN ln -snf /usr/share/zoneinfo/$TZ /etc/localtime && echo $TZ > /etc/timezone
+
+RUN apt-get -y update && apt-get -y install \
+	bc \
+    build-essential \
+    bzip2 \
+	bzr \
+	cmake \
+	cmake-curses-gui \
+	cpio \
+	device-tree-compiler \
+	git \
+	imagemagick \
+	libncurses5-dev \
+	locales \
+	make \
+	p7zip-full \
+	rsync \
+	sharutils \
+	scons \
+	tree \
+	unzip \
+	vim \
+	wget \
+	zip \
+  && rm -rf /var/lib/apt/lists/*
+
+RUN mkdir -p /root/workspace
+WORKDIR /root
+
+COPY support .
+RUN ./build-toolchain.sh
+RUN cat ./setup-env.sh >> .bashrc
+
+VOLUME /root/workspace
+WORKDIR /root/workspace
+
+CMD ["/bin/bash"]

toolchain/README.md

@@ -0,0 +1,20 @@
+# Toolchain Docker image
+
+Based on the [Trimui toolchain Docker image](https://git.crowdedwood.com/trimui-toolchain/) by neonloop.
+
+## Installation
+
+With Docker installed and running, `make shell` builds the toolchain and drops into a shell inside the container. The container's `~/workspace` is bound to `./workspace` by default. The toolchain is located at `/opt/` inside the container.
+
+After building the first time, unless a dependency of the image has changed, `make shell` will skip building and drop into the shell. Running `make shell` from another window while already in a running shell will attach to the already running image.
+
+## Workflow
+
+- On your host machine, clone repositories into `./workspace` and make changes as usual.
+- In the container shell, find the repository in `~/workspace` and build as usual.
+
+See [setup-env.sh](./support/setup-env.sh) for some useful vars for compiling that are exported automatically.
+
+## Docker for Mac
+
+Docker for Mac has a memory limit that can make the toolchain build fail. Follow [these instructions](https://docs.docker.com/docker-for-mac/) to increase the memory limit. Also, docker on the M1 currently has a bug that stops reporting build progress after 5 minutes or so. The initial build takes about 15 minutes on my M1 so just be patient once you see `[output clipped, log limit 1MiB reached]`, it should get there.

toolchain/makefile

@@ -0,0 +1,30 @@
+.PHONY: shell
+.PHONY: clean
+	
+TOOLCHAIN_NAME=rg35xx-toolchain-new
+WORKSPACE_DIR := $(shell pwd)/workspace
+
+CONTAINER_NAME=$(shell docker ps -f "ancestor=$(TOOLCHAIN_NAME)" --format "{{.Names}}")
+BOLD=$(shell tput bold)
+NORM=$(shell tput sgr0)
+
+.build: Dockerfile
+	$(info $(BOLD)Building $(TOOLCHAIN_NAME)...$(NORM))
+	mkdir -p ./workspace
+	docker build -t $(TOOLCHAIN_NAME) .
+	touch .build
+
+ifeq ($(CONTAINER_NAME),)
+shell: .build
+	$(info $(BOLD)Starting $(TOOLCHAIN_NAME)...$(NORM))
+	docker run -it --rm -v "$(WORKSPACE_DIR)":/root/workspace $(TOOLCHAIN_NAME) /bin/bash
+else
+shell:
+	$(info $(BOLD)Connecting to running $(TOOLCHAIN_NAME)...$(NORM))
+	docker exec -it $(CONTAINER_NAME) /bin/bash  
+endif
+
+clean:
+	$(info $(BOLD)Removing $(TOOLCHAIN_NAME)...$(NORM))
+	docker rmi $(TOOLCHAIN_NAME)
+	rm -f .build

toolchain/support/build-toolchain.sh

@@ -0,0 +1,41 @@
+#!/bin/sh
+
+BUILDROOT_VERSION=2017.11
+
+set -xe
+
+if [ -d ~/buildroot ]; then
+	rm -rf ~/buildroot
+else
+	sed -i -e 's/# en_US.UTF-8 UTF-8/en_US.UTF-8 UTF-8/' /etc/locale.gen
+	locale-gen
+fi
+
+cd ~
+
+BUILDROOT_NAME=buildroot-$BUILDROOT_VERSION
+wget https://buildroot.org/downloads/$BUILDROOT_NAME.tar.gz
+tar -xf ./$BUILDROOT_NAME.tar.gz
+rm -f ./$BUILDROOT_NAME.tar.gz
+mv ./$BUILDROOT_NAME ./buildroot
+
+# patches for buildroot packages
+cd ~/patches
+for FILE in $(find . -type f -name "*.patch" 2>/dev/null); do
+	cp $FILE ~/buildroot/$FILE
+done
+
+cd ~/buildroot
+# patches for buildroot itself
+patch -p1 < ~/toolchain-expose-BR2_TOOLCHAIN_EXTRA_EXTERNAL_LIBS-for-all-toolchain-types-2017.11.1.diff
+
+cp ~/rg35xx-buildroot-$BUILDROOT_VERSION.config ./.config
+if [ -f ~/rg35xx-toolchain.tar.xz ]; then
+ 	tar -xf ~/rg35xx-toolchain.tar.xz -C /opt
+else
+	export FORCE_UNSAFE_CONFIGURE=1
+	make oldconfig
+	make world
+	
+	~/install-toolchain.sh
+fi

toolchain/support/install-toolchain.sh

@@ -0,0 +1,11 @@
+#!/bin/sh
+
+mkdir -p /opt/rg35xx-toolchain
+if [ -d /opt/rg35xx-toolchain/usr ]; then
+	rm -fr /opt/rg35xx-toolchain/usr
+fi
+cp -rf ~/buildroot/output/host/usr/ /opt/rg35xx-toolchain/
+# this version of buildroot doesn't have relocate-sdk.sh yet so we bring our own
+cp ~/relocate-sdk.sh /opt/rg35xx-toolchain/
+cp ~/sdk-location /opt/rg35xx-toolchain/
+/opt/rg35xx-toolchain/relocate-sdk.sh

toolchain/support/package-image.sh

@@ -0,0 +1,3 @@
+#!/bin/sh
+
+cp ~/buildroot/output/images/rootfs.ext2 ~/workspace/rootfs.img

toolchain/support/package-toolchain.sh

@@ -0,0 +1,7 @@
+#!/bin/sh
+
+cd /opt/
+tar --xz -cvf rg35xx-toolchain.tar.xz rg35xx-toolchain/
+mv rg35xx-toolchain.tar.xz ~/workspace/
+
+printf "rg35xx-toolchain.tar.xz can be shared as a blob\nby placing in support before calling 'make shell'\n"

toolchain/support/patches/package/bison/110-glibc-change-work-around.patch

@@ -0,0 +1,33 @@
+Subject: Workaround change in glibc
+
+Temporary workaround to compile with glibc 2.28, which
+deprecated some constants
+
+Based on the workaround made for the tools/m4 package
+
+--- a/lib/stdio-impl.h
++++ b/lib/stdio-impl.h
+@@ -18,6 +18,12 @@
+    the same implementation of stdio extension API, except that some fields
+    have different naming conventions, or their access requires some casts.  */
+ 
++/* Glibc 2.28 made _IO_IN_BACKUP private.  For now, work around this
++   problem by defining it ourselves.  FIXME: Do not rely on glibc
++   internals.  */
++#if !defined _IO_IN_BACKUP && defined _IO_EOF_SEEN
++# define _IO_IN_BACKUP 0x100
++#endif
+ 
+ /* BSD stdio derived implementations.  */
+ 
+--- a/lib/fseterr.c
++++ b/lib/fseterr.c
+@@ -29,7 +29,7 @@
+   /* Most systems provide FILE as a struct and the necessary bitmask in
+      <stdio.h>, because they need it for implementing getc() and putc() as
+      fast macros.  */
+-#if defined _IO_ftrylockfile || __GNU_LIBRARY__ == 1 /* GNU libc, BeOS, Haiku, Linux libc5 */
++#if defined _IO_EOF_SEEN || __GNU_LIBRARY__ == 1 /* GNU libc, BeOS, Haiku, Linux libc5 */
+   fp->_flags |= _IO_ERR_SEEN;
+ #elif defined __sferror || defined __DragonFly__ /* FreeBSD, NetBSD, OpenBSD, DragonFly, Mac OS X, Cygwin */
+   fp_->_flags |= __SERR;

toolchain/support/patches/package/e2fsprogs/000-fix-gcc-conflict.patch

@@ -0,0 +1,40 @@
+This patch prevents a conflict with glibc
+
+--- a/misc/create_inode.c
++++ b/misc/create_inode.c	
+@@ -392,7 +392,7 @@ static ssize_t my_pread(int fd, void *buf, size_t count, off_t offset)
+ }
+ #endif /* !defined HAVE_PREAD64 && !defined HAVE_PREAD */
+ 
+-static errcode_t copy_file_range(ext2_filsys fs, int fd, ext2_file_t e2_file,
++static errcode_t copy_file_chunk(ext2_filsys fs, int fd, ext2_file_t e2_file,
+ 				 off_t start, off_t end, char *buf,
+ 				 char *zerobuf)
+ {
+@@ -466,7 +466,7 @@ static errcode_t try_lseek_copy(ext2_filsys fs, int fd, struct stat *statbuf,
+ 
+ 		data_blk = data & ~(fs->blocksize - 1);
+ 		hole_blk = (hole + (fs->blocksize - 1)) & ~(fs->blocksize - 1);
+-		err = copy_file_range(fs, fd, e2_file, data_blk, hole_blk, buf,
++		err = copy_file_chunk(fs, fd, e2_file, data_blk, hole_blk, buf,
+ 				      zerobuf);
+ 		if (err)
+ 			return err;
+@@ -516,7 +516,7 @@ static errcode_t try_fiemap_copy(ext2_filsys fs, int fd, ext2_file_t e2_file,
+ 		}
+ 		for (i = 0, ext = ext_buf; i < fiemap_buf->fm_mapped_extents;
+ 		     i++, ext++) {
+-			err = copy_file_range(fs, fd, e2_file, ext->fe_logical,
++			err = copy_file_chunk(fs, fd, e2_file, ext->fe_logical,
+ 					      ext->fe_logical + ext->fe_length,
+ 					      buf, zerobuf);
+ 			if (err)
+@@ -569,7 +569,7 @@ static errcode_t copy_file(ext2_filsys fs, int fd, struct stat *statbuf,
+ 		goto out;
+ #endif
+ 
+-	err = copy_file_range(fs, fd, e2_file, 0, statbuf->st_size, buf,
++	err = copy_file_chunk(fs, fd, e2_file, 0, statbuf->st_size, buf,
+ 			      zerobuf);
+ out:
+ 	ext2fs_free_mem(&zerobuf);

toolchain/support/patches/package/m4/000-fix-fseeko.patch

@@ -0,0 +1,131 @@
+From c79aedf13fe693da0fc5c4ff727aed5bd43526dc Mon Sep 17 00:00:00 2001
+From: Hutson Betts <hutson@hyper-expanse.net>
+Date: Thu, 10 Dec 2020 21:13:54 -0600
+Subject: [PATCH] glibc 2.28
+
+
+diff --git a/lib/fflush.c b/lib/fflush.c
+index ef2a7f1..787790d 100644
+--- a/lib/fflush.c
++++ b/lib/fflush.c
+@@ -33,7 +33,7 @@
+ #undef fflush
+ 
+ 
+-#if defined _IO_ftrylockfile || __GNU_LIBRARY__ == 1 /* GNU libc, BeOS, Haiku, Linux libc5 */
++#if defined _IO_EOF_SEEN || __GNU_LIBRARY__ == 1 /* GNU libc, BeOS, Haiku, Linux libc5 */
+ 
+ /* Clear the stream's ungetc buffer, preserving the value of ftello (fp).  */
+ static void
+@@ -72,7 +72,7 @@ clear_ungetc_buffer (FILE *fp)
+ 
+ #endif
+ 
+-#if ! (defined _IO_ftrylockfile || __GNU_LIBRARY__ == 1 /* GNU libc, BeOS, Haiku, Linux libc5 */)
++#if ! (defined _IO_EOF_SEEN || __GNU_LIBRARY__ == 1 /* GNU libc, BeOS, Haiku, Linux libc5 */)
+ 
+ # if (defined __sferror || defined __DragonFly__ || defined __ANDROID__) && defined __SNPT
+ /* FreeBSD, NetBSD, OpenBSD, DragonFly, Mac OS X, Cygwin, Android */
+@@ -148,7 +148,7 @@ rpl_fflush (FILE *stream)
+   if (stream == NULL || ! freading (stream))
+     return fflush (stream);
+ 
+-#if defined _IO_ftrylockfile || __GNU_LIBRARY__ == 1 /* GNU libc, BeOS, Haiku, Linux libc5 */
++#if defined _IO_EOF_SEEN || __GNU_LIBRARY__ == 1 /* GNU libc, BeOS, Haiku, Linux libc5 */
+ 
+   clear_ungetc_buffer_preserving_position (stream);
+ 
+diff --git a/lib/fpending.c b/lib/fpending.c
+index ce93604..9fe7ffb 100644
+--- a/lib/fpending.c
++++ b/lib/fpending.c
+@@ -32,7 +32,7 @@ __fpending (FILE *fp)
+   /* Most systems provide FILE as a struct and the necessary bitmask in
+      <stdio.h>, because they need it for implementing getc() and putc() as
+      fast macros.  */
+-#if defined _IO_ftrylockfile || __GNU_LIBRARY__ == 1 /* GNU libc, BeOS, Haiku, Linux libc5 */
++#if defined _IO_EOF_SEEN || __GNU_LIBRARY__ == 1 /* GNU libc, BeOS, Haiku, Linux libc5 */
+   return fp->_IO_write_ptr - fp->_IO_write_base;
+ #elif defined __sferror || defined __DragonFly__ || defined __ANDROID__
+   /* FreeBSD, NetBSD, OpenBSD, DragonFly, Mac OS X, Cygwin, Android */
+diff --git a/lib/fpurge.c b/lib/fpurge.c
+index 53ee68c..7cba3a3 100644
+--- a/lib/fpurge.c
++++ b/lib/fpurge.c
+@@ -62,7 +62,7 @@ fpurge (FILE *fp)
+   /* Most systems provide FILE as a struct and the necessary bitmask in
+      <stdio.h>, because they need it for implementing getc() and putc() as
+      fast macros.  */
+-# if defined _IO_ftrylockfile || __GNU_LIBRARY__ == 1 /* GNU libc, BeOS, Haiku, Linux libc5 */
++# if defined _IO_EOF_SEEN || __GNU_LIBRARY__ == 1 /* GNU libc, BeOS, Haiku, Linux libc5 */
+   fp->_IO_read_end = fp->_IO_read_ptr;
+   fp->_IO_write_ptr = fp->_IO_write_base;
+   /* Avoid memory leak when there is an active ungetc buffer.  */
+diff --git a/lib/freadahead.c b/lib/freadahead.c
+index cfc969b..5e43e13 100644
+--- a/lib/freadahead.c
++++ b/lib/freadahead.c
+@@ -25,7 +25,7 @@
+ size_t
+ freadahead (FILE *fp)
+ {
+-#if defined _IO_ftrylockfile || __GNU_LIBRARY__ == 1 /* GNU libc, BeOS, Haiku, Linux libc5 */
++#if defined _IO_EOF_SEEN || __GNU_LIBRARY__ == 1 /* GNU libc, BeOS, Haiku, Linux libc5 */
+   if (fp->_IO_write_ptr > fp->_IO_write_base)
+     return 0;
+   return (fp->_IO_read_end - fp->_IO_read_ptr)
+diff --git a/lib/freading.c b/lib/freading.c
+index 05cb0b8..f1da5b9 100644
+--- a/lib/freading.c
++++ b/lib/freading.c
+@@ -31,7 +31,7 @@ freading (FILE *fp)
+   /* Most systems provide FILE as a struct and the necessary bitmask in
+      <stdio.h>, because they need it for implementing getc() and putc() as
+      fast macros.  */
+-# if defined _IO_ftrylockfile || __GNU_LIBRARY__ == 1 /* GNU libc, BeOS, Haiku, Linux libc5 */
++# if defined _IO_EOF_SEEN || __GNU_LIBRARY__ == 1 /* GNU libc, BeOS, Haiku, Linux libc5 */
+   return ((fp->_flags & _IO_NO_WRITES) != 0
+           || ((fp->_flags & (_IO_NO_READS | _IO_CURRENTLY_PUTTING)) == 0
+               && fp->_IO_read_base != NULL));
+diff --git a/lib/fseeko.c b/lib/fseeko.c
+index 0c01c4f..0601619 100644
+--- a/lib/fseeko.c
++++ b/lib/fseeko.c
+@@ -47,7 +47,7 @@ fseeko (FILE *fp, off_t offset, int whence)
+ #endif
+ 
+   /* These tests are based on fpurge.c.  */
+-#if defined _IO_ftrylockfile || __GNU_LIBRARY__ == 1 /* GNU libc, BeOS, Haiku, Linux libc5 */
++#if defined _IO_EOF_SEEN || __GNU_LIBRARY__ == 1 /* GNU libc, BeOS, Haiku, Linux libc5 */
+   if (fp->_IO_read_end == fp->_IO_read_ptr
+       && fp->_IO_write_ptr == fp->_IO_write_base
+       && fp->_IO_save_base == NULL)
+@@ -123,7 +123,7 @@ fseeko (FILE *fp, off_t offset, int whence)
+           return -1;
+         }
+ 
+-#if defined _IO_ftrylockfile || __GNU_LIBRARY__ == 1 /* GNU libc, BeOS, Haiku, Linux libc5 */
++#if defined _IO_EOF_SEEN || __GNU_LIBRARY__ == 1 /* GNU libc, BeOS, Haiku, Linux libc5 */
+       fp->_flags &= ~_IO_EOF_SEEN;
+       fp->_offset = pos;
+ #elif defined __sferror || defined __DragonFly__ || defined __ANDROID__
+diff --git a/lib/stdio-impl.h b/lib/stdio-impl.h
+index 766d693..75fe3ad 100644
+--- a/lib/stdio-impl.h
++++ b/lib/stdio-impl.h
+@@ -18,6 +18,12 @@
+    the same implementation of stdio extension API, except that some fields
+    have different naming conventions, or their access requires some casts.  */
+ 
++/* Glibc 2.28 made _IO_IN_BACKUP private.  For now, work around this
++   problem by defining it ourselves.  FIXME: Do not rely on glibc
++   internals.  */
++#if !defined _IO_IN_BACKUP && defined _IO_EOF_SEEN
++# define _IO_IN_BACKUP 0x100
++#endif
+ 
+ /* BSD stdio derived implementations.  */
+ 
+-- 
+2.25.1
+

toolchain/support/patches/package/sdl/0003-rg35xx-sdlk-additions.patch

@@ -0,0 +1,80 @@
+--- a/include/SDL_keysym.h
++++ b/include/SDL_keysym.h
+@@ -296,6 +296,19 @@
+ 	SDLK_UNDO		= 322,		/**< Atari keyboard has Undo */
+         /*@}*/
+ 
++	/** @name RG35XX keys */
++        /*@{*/
++	SDLK_KATAKANA			= 323,
++	SDLK_HIRAGANA			= 324,
++	SDLK_HENKAN				= 325,
++	SDLK_KATAKANAHIRAGANA	= 326,
++	SDLK_MUHENKAN			= 327,
++	SDLK_KP_JPCOMMA			= 328,
++	SDLK_KP_SLASH			= 329,
++	SDLK_CURSORBLOCKUP		= 330,
++	SDLK_CURSORBLOCKDOWN	= 331,
++        /*@}*/
++
+ 	/* Add any other keys here */
+ 
+ 	SDLK_LAST
+--- a/src/video/fbcon/SDL_fbevents.c
++++ b/src/video/fbcon/SDL_fbevents.c
+@@ -1133,6 +1133,38 @@
+ 	  case 127:
+ 	    keymap[i] = SDLK_MENU;
+ 	    break;
++		
++	  /* RG35XX */
++	  case SCANCODE_KATAKANA:
++	  	keymap[i] = SDLK_KATAKANA;
++		break;
++	  case SCANCODE_HIRAGANA:
++	  	keymap[i] = SDLK_HIRAGANA;
++		break;
++	  case SCANCODE_HENKAN:
++	  	keymap[i] = SDLK_HENKAN;
++		break;
++	  case SCANCODE_KATAKANAHIRAGANA:
++	  	keymap[i] = SDLK_KATAKANAHIRAGANA;
++		break;
++	  case SCANCODE_MUHENKAN:
++	  	keymap[i] = SDLK_MUHENKAN;
++		break;
++	  case SCANCODE_KPJPCOMMA:
++	  	keymap[i] = SDLK_KP_JPCOMMA;
++		break;
++	  case SCANCODE_KEYPADENTER:
++	  	keymap[i] = SDLK_KP_ENTER;
++		break;
++	  case SCANCODE_CURSORBLOCKUP:
++	  	keymap[i] = SDLK_CURSORBLOCKUP;
++		break;
++	  case SCANCODE_CURSORBLOCKDOWN:
++	  	keymap[i] = SDLK_CURSORBLOCKDOWN;
++		break;
++			
++		
++		
+ 	  /* this should take care of all standard ascii keys */
+ 	  default:
+ 	    keymap[i] = KVAL(vga_keymap[0][i]);
+--- a/src/video/fbcon/SDL_fbkeys.h
++++ b/src/video/fbcon/SDL_fbkeys.h
+@@ -114,6 +114,14 @@
+ #define SCANCODE_F11			87
+ #define SCANCODE_F12			88
+ 
++/* RG35XX */
++#define SCANCODE_KATAKANA		90
++#define SCANCODE_HIRAGANA		91
++#define SCANCODE_HENKAN			92
++#define SCANCODE_KATAKANAHIRAGANA	93
++#define SCANCODE_MUHENKAN		94
++#define SCANCODE_KPJPCOMMA		95
++
+ #define SCANCODE_KEYPADENTER		96
+ #define SCANCODE_RIGHTCONTROL		97
+ #define SCANCODE_CONTROL		97

toolchain/support/patches/package/sdl/0004-modernize-SDL_FBCON_DONT_CLEAR.patch

@@ -0,0 +1,35 @@
+--- a/src/video/fbcon/SDL_fbvideo.c
++++ b/src/video/fbcon/SDL_fbvideo.c
+@@ -1907,15 +1907,12 @@
+ static void FB_VideoQuit(_THIS)
+ {
+ 	int i, j;
++	const char *dontClearPixels = SDL_getenv("SDL_FBCON_DONT_CLEAR");
+ 
+ 	if ( this->screen ) {
+-		/* Clear screen and tell SDL not to free the pixels */
+-
+-		const char *dontClearPixels = SDL_getenv("SDL_FBCON_DONT_CLEAR");
+-
+ 		/* If the framebuffer is not to be cleared, make sure that we won't
+ 		 * display the previous frame when disabling double buffering. */
+-		if ( dontClearPixels && flip_page == 0 ) {
++		if ( dontClearPixels && (this->screen->flags & SDL_DOUBLEBUF) && flip_page == 0 ) {
+ 			SDL_memcpy(flip_address[0], flip_address[1], this->screen->pitch * this->screen->h);
+ 		}
+ 
+@@ -1969,7 +1966,13 @@
+ 
+ 		/* Restore the original video mode and palette */
+ 		if ( FB_InGraphicsMode(this) ) {
+-			FB_RestorePalette(this);
++			if (dontClearPixels) {
++				/* Restore only panning, keep current mode */
++				ioctl(console_fd, FBIOGET_VSCREENINFO, &saved_vinfo);
++				saved_vinfo.yoffset = saved_vinfo.xoffset = 0;
++			} else {
++				FB_RestorePalette(this);
++			}
+ 			ioctl(console_fd, FBIOPUT_VSCREENINFO, &saved_vinfo);
+ 		}
+ 

toolchain/support/relocate-sdk.sh

@@ -0,0 +1,47 @@
+#!/bin/sh
+#
+if [ "$#" -ne 0 ]; then
+    echo "Run this script to relocate the buildroot SDK at that location"
+    exit 1
+fi
+
+FILEPATH="$(readlink -f "$0")"
+NEWPATH="$(dirname "${FILEPATH}")"
+
+cd "${NEWPATH}"
+LOCFILE="sdk-location"
+if [ ! -r "${LOCFILE}" ]; then
+    echo "Previous location of the buildroot SDK not found!"
+    exit 1
+fi
+OLDPATH="$(cat "${LOCFILE}")"
+
+if [ "${NEWPATH}" = "${OLDPATH}" ]; then
+    echo "This buildroot SDK has already been relocated!"
+    exit 0
+fi
+
+# Check if the path substitution does work properly, e.g.  a tree
+# "/a/b/c" copied into "/a/b/c/a/b/c/" would not be allowed.
+newpath="$(sed -e "s|${OLDPATH}|${NEWPATH}|g" "${LOCFILE}")"
+if [ "${NEWPATH}" != "${newpath}" ]; then
+    echo "Something went wrong with substituting the path!"
+    echo "Please choose another location for your SDK!"
+    exit 1
+fi
+
+echo "Relocating the buildroot SDK from ${OLDPATH} to ${NEWPATH} ..."
+
+# Make sure file uses the right language
+export LC_ALL=C
+# Replace the old path with the new one in all text files
+grep -lr "${OLDPATH}" . | while read -r FILE ; do
+    if file -b --mime-type "${FILE}" | grep -q '^text/' && [ "${FILE}" != "${LOCFILE}" ]
+    then
+        sed -i "s|${OLDPATH}|${NEWPATH}|g" "${FILE}"
+    fi
+done
+
+# At the very end, we update the location file to not break the
+# SDK if this script gets interruted.
+sed -i "s|${OLDPATH}|${NEWPATH}|g" ${LOCFILE}

toolchain/support/sdk-location

@@ -0,0 +1 @@
+/root/buildroot/output/host

toolchain/support/setup-env.sh

@@ -0,0 +1,4 @@
+export PATH="/opt/rg35xx-toolchain/usr/bin:${PATH}:/opt/rg35xx-toolchain/usr/arm-buildroot-linux-gnueabihf/sysroot/bin"
+export CROSS_COMPILE=/opt/rg35xx-toolchain/usr/bin/arm-buildroot-linux-gnueabihf-
+export PREFIX=/opt/rg35xx-toolchain/usr/arm-buildroot-linux-gnueabihf/sysroot/usr
+export UNION_PLATFORM=rg35xx

toolchain/support/toolchain-expose-BR2_TOOLCHAIN_EXTRA_EXTERNAL_LIBS-for-all-toolchain-types-2017.11.1.diff

@@ -0,0 +1,89 @@
+diff --git a/Config.in.legacy b/Config.in.legacy
+index d4f3d04062..b3086300e6 100644
+--- a/Config.in.legacy
++++ b/Config.in.legacy
+@@ -147,6 +147,17 @@ endif
+ 
+ comment "Legacy options removed in 2017.11"
+ 
++config BR2_TOOLCHAIN_EXTRA_EXTERNAL_LIBS
++	string "toolchain-external extra libs option has been renamed"
++	help
++	  The option BR2_TOOLCHAIN_EXTRA_EXTERNAL_LIBS has
++	  been renamed to BR2_TOOLCHAIN_EXTRA_LIBS.
++
++config BR2_TOOLCHAIN_EXTRA_EXTERNAL_LIBS_WRAP
++	bool
++	default y if BR2_TOOLCHAIN_EXTRA_EXTERNAL_LIBS != ""
++	select BR2_LEGACY
++
+ config BR2_PACKAGE_RFKILL
+ 	bool "rfkill package removed"
+ 	select BR2_LEGACY
+diff --git a/package/gcc/gcc-final/gcc-final.mk b/package/gcc/gcc-final/gcc-final.mk
+index 30fb87856c..24d034b720 100644
+--- a/package/gcc/gcc-final/gcc-final.mk
++++ b/package/gcc/gcc-final/gcc-final.mk
+@@ -187,6 +187,8 @@ ifeq ($(BR2_GCC_ENABLE_OPENMP),y)
+ HOST_GCC_FINAL_USR_LIBS += libgomp
+ endif
+ 
++HOST_GCC_FINAL_USR_LIBS += $(call qstrip,$(BR2_TOOLCHAIN_EXTRA_LIBS))
++
+ ifneq ($(HOST_GCC_FINAL_USR_LIBS),)
+ define HOST_GCC_FINAL_INSTALL_STATIC_LIBS
+ 	for i in $(HOST_GCC_FINAL_USR_LIBS) ; do \
+diff --git a/toolchain/Config.in b/toolchain/Config.in
+index c9aa95985f..8f990cacb9 100644
+--- a/toolchain/toolchain-common.in
++++ b/toolchain/toolchain-common.in
+@@ -82,6 +82,19 @@ config BR2_TOOLCHAIN_GLIBC_GCONV_LIBS_LIST
+ 
+ 	  Note: the full set of gconv libs are ~8MiB (on ARM).
+ 
++config BR2_TOOLCHAIN_EXTRA_LIBS
++	string "Extra toolchain libraries to be copied to target"
++	default ""
++	help
++	  If your toolchain provides extra libraries that need to be
++	  copied to the target filesystem, enter them here, separated
++	  by spaces.
++
++	  NOTE: The library name should not include a suffix or wildcard.
++
++	  Examples where this can be useful is for adding debug libraries
++	  to the target like the GCC libsanitizer (libasan/liblsan/...).
++
+ # This boolean is true if the toolchain provides a built-in full
+ # featured gettext implementation (glibc), and false if only a stub
+ # gettext implementation is provided (uclibc, musl)
+diff --git a/toolchain/toolchain-external/pkg-toolchain-external.mk b/toolchain/toolchain-external/pkg-toolchain-external.mk
+index 5147da0104..e339773a96 100644
+--- a/toolchain/toolchain-external/pkg-toolchain-external.mk
++++ b/toolchain/toolchain-external/pkg-toolchain-external.mk
+@@ -156,7 +156,7 @@ ifeq ($(BR2_TOOLCHAIN_HAS_DLANG),y)
+ TOOLCHAIN_EXTERNAL_LIBS += libgdruntime.so* libgphobos.so*
+ endif
+ 
+-TOOLCHAIN_EXTERNAL_LIBS += $(call qstrip,$(BR2_TOOLCHAIN_EXTRA_EXTERNAL_LIBS))
++TOOLCHAIN_EXTERNAL_LIBS += $(call qstrip,$(BR2_TOOLCHAIN_EXTRA_LIBS))
+ 
+ 
+ #
+diff --git a/toolchain/toolchain-external/toolchain-external-custom/Config.in.options b/toolchain/toolchain-external/toolchain-external-custom/Config.in.options
+index a36747f490..fd95f8201b 100644
+--- a/toolchain/toolchain-external/toolchain-external-custom/Config.in.options
++++ b/toolchain/toolchain-external/toolchain-external-custom/Config.in.options
+@@ -438,12 +438,4 @@ config BR2_TOOLCHAIN_EXTERNAL_OPENMP
+ 	  support. If you don't know, leave the default value,
+ 	  Buildroot will tell you if it's correct or not.
+ 
+-config BR2_TOOLCHAIN_EXTRA_EXTERNAL_LIBS
+-	string "Extra toolchain libraries to be copied to target"
+-	help
+-	  If your external toolchain provides extra libraries that
+-	  need to be copied to the target filesystem, enter them
+-	  here, separated by spaces. They will be copied to the
+-	  target's /lib directory.
+-
+ endif