User:Fabled - Revision history

Fabled: /* Bootstrapping new architectures */

2013-09-25T09:17:42Z

Bootstrapping new architectures

← Older revision		Revision as of 09:17, 25 September 2013
Line 1:		Line 1:
	==Bootstrapping new architectures==		==Bootstrapping new architectures==

			abuild, since 2.17.0, more or less supports creating cross-compiler and cross-compiling.
			That still needs a little bit of polishing, same goes to my scripts.
			All my scripts and example configs are located at http://dev.alpinelinux.org/~tteras/bootstrap

			# Decide on toolchain name (triplet), and update gcc aport to add proper configure flags for it
	# Create cross compiler		# Create cross compiler
	#* ~~I decided to use crosstool-ng as build cross-compiler is tricky~~		#* Write abuild-createcross-$ARCH.conf for it, and use createcross-toolchain.sh to create a cross-compiler.
	~~#** Wrote patch to support musl as C~~-~~library~~
	~~#** Wrote patch to enable building toolchains with PIE as default~~
	~~#* Create crosstool~~-ng .~~config~~, ~~[http://dev.alpinelinux.org/~tteras/crosstool-ng-alpine~~-~~arm~~.~~config My ARM config]~~
	~~#** NOTE: for some reason binutils gold linker crashes when compiling gcc, so needed~~ to ~~keep it disabled~~.
	~~#* run 'ct-ng build' to build the new tool chain~~
	# Cross compile minimal system image		# Cross compile minimal system image
	#* ~~abuild and core APKBUILDs modified to support cross building~~		#* With above generated toolchain, you can use crossbuild-alpine-bootstrap.sh to create the minimal image.
	~~#* Wrote [http://dev.alpinelinux.org/~tteras/~~crossbuild-alpine-bootstrap.sh ~~crossbuild-alpine-bootstrap~~.~~sh] to invoke abuild with cross-compiler~~		# Setup new box
	#* Cross-building script uses abuild.conf overlay to define new ~~target [http://dev.alpinelinux.org/~tteras/abuild-cross-armel.conf My ARM overlay]~~		#* If running on new hardware, you also need to prepare kernel images, initramfs and modloop to create the initial bootimage.
	#* ~~This produces all core .apk files for the target platform that can be used~~ to ~~boot qemu~~, ~~qemu-user target or native hardware~~		#* If running as vserver guest, you can just install the .apks from previous step.
	~~# Rebuild system~~ and ~~setup builder~~		#* Setup builder.
	#* ~~Decided to use qemu-user for ARM~~ as it the ~~fastest option available for us (no fast native hardware yet)~~
	~~#* Setup qemu-arm support for target chroot~~
	~~#*# apk --arch x86 --root $chroot/qemu --initdb add qemu-arm~~
	~~## cd $chroot/lib ; ln -s~~ ..~~/qemu/lib/ld- .~~
	~~#*# ldconfig -r $chroot /qemu/lib /qemu/usr/lib~~
	~~#*# create binfmt_misc mapping~~
	~~#*# seems qemu-user needs to access /proc/sys/vm/mmap_min_addr or it does not work~~
	#* Setup ~~target main chroot~~
	~~#** apk --arch arm --root $chroot --initdb add alpine-base build-base~~
	~~#** enter chroot~~

Fabled: /* Bootstrapping new architectures */

2013-07-05T14:52:57Z

Bootstrapping new architectures

← Older revision		Revision as of 14:52, 5 July 2013
Line 5:		Line 5:
	#** Wrote patch to support musl as C-library		#** Wrote patch to support musl as C-library
	#** Wrote patch to enable building toolchains with PIE as default		#** Wrote patch to enable building toolchains with PIE as default
	#* ~~TODO~~: ~~post~~ crosstool-ng .config ~~used (TODO)~~		#* Create crosstool-ng .config, [http://dev.alpinelinux.org/~tteras/crosstool-ng-alpine-arm.config My ARM config]
	#** NOTE: for some reason binutils gold linker crashes when compiling gcc, so needed to keep it disabled.		#** NOTE: for some reason binutils gold linker crashes when compiling gcc, so needed to keep it disabled.
			#* run 'ct-ng build' to build the new tool chain
	# Cross compile minimal system image		# Cross compile minimal system image
	#* abuild and core APKBUILDs modified to support cross building		#* abuild and core APKBUILDs modified to support cross building
	#* Wrote crossbuild-alpine-bootstrap.sh to invoke abuild with cross-compiler		#* Wrote [http://dev.alpinelinux.org/~tteras/crossbuild-alpine-bootstrap.sh crossbuild-alpine-bootstrap.sh] to invoke abuild with cross-compiler
	#* Cross-building script uses abuild.conf overlay to define new target		#* Cross-building script uses abuild.conf overlay to define new target [http://dev.alpinelinux.org/~tteras/abuild-cross-armel.conf My ARM overlay]
	~~#* TODO~~: ~~post crossbuild-alpine-bootstrap~~.~~sh and~~ abuild-cross-armel.conf
	#* This produces all core .apk files for the target platform that can be used to boot qemu, qemu-user target or native hardware		#* This produces all core .apk files for the target platform that can be used to boot qemu, qemu-user target or native hardware
	# Rebuild system and setup builder		# Rebuild system and setup builder

Fabled: Created page with "==Bootstrapping new architectures== # Create cross compiler #* I decided to use crosstool-ng as build cross-compiler is tricky #** Wrote patch to support musl as C-library #*..."

2013-07-05T14:44:35Z

Created page with "==Bootstrapping new architectures== # Create cross compiler #* I decided to use crosstool-ng as build cross-compiler is tricky #** Wrote patch to support musl as C-library #*..."

New page

==Bootstrapping new architectures==

# Create cross compiler
#* I decided to use crosstool-ng as build cross-compiler is tricky
#** Wrote patch to support musl as C-library
#** Wrote patch to enable building toolchains with PIE as default
#* TODO: post crosstool-ng .config used (TODO)
#** NOTE: for some reason binutils gold linker crashes when compiling gcc, so needed to keep it disabled.
# Cross compile minimal system image
#* abuild and core APKBUILDs modified to support cross building
#* Wrote crossbuild-alpine-bootstrap.sh to invoke abuild with cross-compiler
#* Cross-building script uses abuild.conf overlay to define new target
#* TODO: post crossbuild-alpine-bootstrap.sh and abuild-cross-armel.conf
#* This produces all core .apk files for the target platform that can be used to boot qemu, qemu-user target or native hardware
# Rebuild system and setup builder
#* Decided to use qemu-user for ARM as it the fastest option available for us (no fast native hardware yet)
#* Setup qemu-arm support for target chroot
#*# apk --arch x86 --root $chroot/qemu --initdb add qemu-arm
#*# cd $chroot/lib ; ln -s ../qemu/lib/ld-* .
#*# ldconfig -r $chroot /qemu/lib /qemu/usr/lib
#*# create binfmt_misc mapping
#*# seems qemu-user needs to access /proc/sys/vm/mmap_min_addr or it does not work
#* Setup target main chroot
#** apk --arch arm --root $chroot --initdb add alpine-base build-base
#** enter chroot