Cross-building from amd64
Set up an unstable amd64 sbuild chroot with http://snapshot.debian.org/archive/debian/20160803T183328Z/ as the mirror (this guide will assume that sbuild -c unstable-amd64-sbuild will use this chroot)
- You will need a crossbuild-essential-m68k - download the source for build-essential, uncomment the m68k entry in debian/cross-targets and rebuild
- Due to libnss3 and libidn11 being more up-to-date for amd64 than m68k at the time of writing, the same version needs to be cross-built
Build nss (3.25-1)
- Download source
- Apply the following patches from rebootstrap:
1 --- a/debian/rules 2 +++ b/debian/rules 3 @@ -33,10 +34,9 @@ 4 endif 5 ifeq ($(origin CXX),default) 6 TOOLCHAIN += CXX=$(DEB_HOST_GNU_TYPE)-g++ 7 +CXX := $(DEB_HOST_GNU_TYPE)-g++ 8 endif 9 -ifeq ($(origin CCC),default) 10 -TOOLCHAIN += CCC=$(DEB_HOST_GNU_TYPE)-g++ 11 +TOOLCHAIN += CCC=$(CXX) 12 -endif 13 ifeq ($(origin RANLIB),default) 14 TOOLCHAIN += RANLIB=$(DEB_HOST_GNU_TYPE)-ranlib 15 endif
- Build with
DEB_BUILD_OPTIONS=nocheck \ DEB_BUILD_PROFILES="cross nocheck" \ sbuild -c unstable-amd64-sbuild --host=m68k \ --extra-repository='deb http://snapshot.debian.org/archive/debian-ports/20160803T183328Z unstable main' \ --extra-package=/home/james/src/build-essential/crossbuild-essential-m68k_12.2_all.deb
Build libidn (1.33-1)
- Download source
- Change the Build-Depends to
Build-Depends: debhelper (>= 9), gcj-jdk [!arm !hppa !hurd-i386 !mips64el] <!stage1>, fastjar [!arm !hppa !hurd-i386 !mips64el] <!stage1>, dh-autoreconf, autopoint (>= 0.19.3), chrpath <cross>
The differences should be adding the stage1 exclusions to gcj-jdk and fastjar, and adding chrpath for cross - Apply the following patch (some of this is probably redundant, but it seems to work)
In fact, I suspect that adding --add-depends=libc6:m68k to the build would make this not needed, and as far as I can tell is the only significant difference between a clean chroot and the one used by rebootstrap.
1 --- a/debian/rules 2 +++ b/debian/rules 3 @@ -26,6 +26,7 @@ 4 --with-packager-version=$(CFG_VERS) \ 5 --with-packager-bug-reports=https://bugs.debian.org/ \ 6 --disable-silent-rules \ 7 + --disable-rpath \ 8 $(ENABLE_JAVA) 9 10 override_dh_auto_install: 11 @@ -36,6 +37,17 @@ 12 mv debian/tmp/usr/lib/$(DEB_HOST_MULTIARCH)/libidn.so.* debian/tmp/lib/$(DEB_HOST_MULTIARCH)/ 13 rm -f debian/tmp/usr/lib/$(DEB_HOST_MULTIARCH)/libidn.so 14 ln -s /lib/$(DEB_HOST_MULTIARCH)/libidn.so.11 debian/tmp/usr/lib/$(DEB_HOST_MULTIARCH)/libidn.so 15 +# Somehow idn is linked with -rpath, which breaks dpkg-shlibdeps 16 +ifneq ($(DEB_HOST_ARCH),$(DEB_BUILD_ARCH)) 17 + chrpath -d debian/tmp/usr/bin/idn 18 +endif 19 + 20 +ifneq ($(DEB_HOST_ARCH),$(DEB_BUILD_ARCH)) 21 +override_dh_shlibdeps: 22 +# Horrible horrible cross-build hack 23 +# Not sure why rebootstrap succeeds... 24 + dh_shlibdeps -- -l/usr/$(DEB_HOST_MULTIARCH)/lib 25 +endif 26 27 override_dh_install: 28 dh_install
- Build with
DEB_BUILD_OPTIONS=nocheck \ DEB_BUILD_PROFILES="cross nocheck" \ sbuild -c unstable-amd64-sbuild --host=m68k \ --extra-repository='deb http://snapshot.debian.org/archive/debian-ports/20160803T183328Z unstable main' \ --extra-package=/home/james/src/build-essential/crossbuild-essential-m68k_12.2_all.deb
Build openjdk-8
- Get the latest source
- Apply the following patch (not all of the :native additions may be needed, but this worked for me)
1 --- a/debian/control 2 +++ b/debian/control 3 @@ -3,17 +3,18 @@ 4 Priority: optional 5 Maintainer: OpenJDK Team <openjdk@lists.launchpad.net> 6 Uploaders: Matthias Klose <doko@ubuntu.com> 7 -Build-Depends: debhelper (>= 9), quilt, m4, lsb-release, zip, unzip, 8 - sharutils, gawk, cpio, pkg-config, procps, wdiff, fastjar (>= 2:0.96-0ubuntu2), 9 - autoconf (>= 2.69), automake, autotools-dev, ant, ant-optional, libtool, 10 - g++-5, 11 - openjdk-8-jdk | openjdk-7-jdk, 12 +Build-Depends: debhelper:native (>= 9), quilt:native, m4:native, lsb-release:native, zip:native, unzip:native, 13 + sharutils:native, gawk:native, cpio:native, pkg-config, procps:native, wdiff:native, fastjar:native (>= 2:0.96-0ubuntu2), 14 + autoconf (>= 2.69), automake, autotools-dev, ant:native, ant-optional:native, libtool, 15 + g++-5 <!cross>, 16 + g++-5-m68k-linux-gnu [m68k] <cross>, 17 + openjdk-8-jdk <!cross> | openjdk-7-jdk <!cross>, 18 libxtst-dev, libxi-dev, libxt-dev, libxaw7-dev, libxrender-dev, libcups2-dev, libasound2-dev, liblcms2-dev, libfreetype6-dev (>= 2.2.1), libgtk2.0-dev, libxinerama-dev, libkrb5-dev, xsltproc, libpcsclite-dev, 19 libffi-dev, 20 zlib1g-dev, libattr1-dev, libpng-dev, libjpeg-dev, libgif-dev, libpulse-dev (>= 0.9.12) [!alpha], systemtap-sdt-dev [!sh4], 21 libnss3-dev (>= 2:3.17.1), tzdata, 22 - mauve, jtreg, xvfb, xauth, xfonts-base, libgl1-mesa-dri [!x32], twm | metacity, twm | dbus-x11, x11-xkb-utils, 23 - time, openjdk-8-jdk-headless <cross>, dpkg-dev (>= 1.17.14), 24 + mauve <!nocheck>, jtreg <!nocheck>, xvfb <!nocheck>, xauth <!nocheck>, xfonts-base <!nocheck>, libgl1-mesa-dri [!x32] <!nocheck>, twm <!nocheck> | metacity <!nocheck>, twm <!nocheck> | dbus-x11 <!nocheck>, x11-xkb-utils <!nocheck>, 25 + time:native, openjdk-8-jdk-headless:native <cross>, dpkg-dev:native (>= 1.17.14), 26 Standards-Version: 3.9.8 27 Homepage: http://openjdk.java.net/ 28 Vcs-Bzr: http://bazaar.launchpad.net/~openjdk/openjdk/openjdk8 29 --- a/debian/rules 30 +++ b/debian/rules 31 @@ -42,8 +42,10 @@ 32 hotspot_archs = amd64 i386 arm64 ppc64 ppc64el kfreebsd-amd64 kfreebsd-i386 33 # FIXME: use bootcycle builds for zero archs? 34 bootcycle_build = $(if $(filter $(DEB_HOST_ARCH), $(hotspot_archs)),yes) 35 +BINUTILS_ARCH = 36 ifneq ($(DEB_HOST_ARCH),$(DEB_BUILD_ARCH)) 37 bootcycle_build = 38 + BINUTILS_ARCH = $(DEB_HOST_MULTIARCH)- 39 endif 40 41 shark_archs = amd64 i386 kfreebsd-amd64 kfreebsd-i386 42 @@ -2292,20 +2287,20 @@ 43 id=$$(echo $$i | sed -r 's,debian/[^/]+,$(d_dbg)/usr/lib/debug,'); \ 44 echo strip $$i; \ 45 mkdir -p $$(dirname $$id); \ 46 - objcopy --only-keep-debug $$i $$id; \ 47 + $(BINUTILS_ARCH)objcopy --only-keep-debug $$i $$id; \ 48 chmod 644 $$id; \ 49 - strip --remove-section=.comment --remove-section=.note \ 50 + $(BINUTILS_ARCH)strip --remove-section=.comment --remove-section=.note \ 51 --strip-debug $$i; \ 52 - objcopy --add-gnu-debuglink $$id $$i; \ 53 + $(BINUTILS_ARCH)objcopy --add-gnu-debuglink $$id $$i; \ 54 else \ 55 d=usr/lib/debug/.build-id/$${b_id:0:2}; \ 56 f=$${b_id:2}.debug; \ 57 mkdir -p $(d_dbg)/$$d; \ 58 - objcopy --only-keep-debug --compress-debug-sections $$i $(d_dbg)/$$d/$$f; \ 59 + $(BINUTILS_ARCH)objcopy --only-keep-debug --compress-debug-sections $$i $(d_dbg)/$$d/$$f; \ 60 chmod 644 $(d_dbg)/$$d/$$f; \ 61 - strip --remove-section=.comment --remove-section=.note $$i; \ 62 + $(BINUTILS_ARCH)strip --remove-section=.comment --remove-section=.note $$i; \ 63 pushd $(d_dbg)/$$d >/dev/null; \ 64 - objcopy --add-gnu-debuglink $$f $(CURDIR)/$$i; \ 65 + $(BINUTILS_ARCH)objcopy --add-gnu-debuglink $$f $(CURDIR)/$$i; \ 66 popd >/dev/null; \ 67 fi; \ 68 done
- Build with
DEB_BUILD_OPTIONS=nocheck \ DEB_BUILD_PROFILES="cross nocheck" \ sbuild -c unstable-amd64-sbuild --host=m68k \ --extra-repository='deb http://snapshot.debian.org/archive/debian-ports/20160803T183328Z unstable main' \ --extra-package=/home/james/src/build-essential/crossbuild-essential-m68k_12.2_all.deb \ --extra-package=/home/james/src/nss/libnss3_3.25-1_m68k.deb \ --extra-package=/home/james/src/nss/libnss3-dev_3.25-1_m68k.deb \ --extra-package=/home/james/src/libidn/libidn11_1.33-1_m68k.deb \ --debbuildopt=-d
It seems the -d is needed for dpkg-buildpackage, as dpkg-checkbuilddeps thinks B-Ds are missing, despite sbuild's apt resolver succeeding.