building a cross compile NetBSD toolchain Notes - ipatch/theairportwiki GitHub Wiki

• Building a cross compile toolchain for MIPS BE
• Useful packages to install on the host system Debian Lenny before trying to build the NetBSD tools
• Random Notes
• Useful Links
• TODOs

./build.sh -a mipseb -m evbmips -j8 tools
./build.sh -a mipseb -m evbmips -j8 distribution

Update January 8 2018

Making progress 📸

apt-get install build-essential flex libncurses-dev ncurses-base zlib1g-dev zlib1g git-core

Giving credit 💳 where credit is due.

• download from the NetBSD archives.

• gnusrc

• sharesrc

• src

• syssrc

• extract them all

for file in *.tgz
  do
    tar xfz $file
done

• cd usr/src

The below example is for building a toolchain that will compile binaries for ARM little endian.

./build.sh -U -u -a arm -m evbarm -D ../../evbarm/dest/ -O ../../evbarm/obj/ -R ../../evbarm/release/ -T ../../evbarm/tools/ tools

Some useful tidbits about the above command,

• -U Set MKUNPRIVED=yes.
• -u Set MKUPDATE=yes.
• -a arch Set the value of MACHINE_ARCH to arch.

ie, -a arm

• -m Set the value of MACHINE to mach. All cross builds require -m
• -D dest Set the value of DESTDIR to dest.
• -O Create an appropriate transform macro for MAKEOBJDIR that will place the built object files under obj.
• -R Set the value of RELEASEDIR to rel.
• -T tools Set the value of TOOLDIR to tools.

Once the tools have been built, the userspace can be built with the below command.

./build.sh -U -u -a arm -m evbarm -D ../../evbarm/dest/ -O ../../evbarm/obj/ -R ../../evbarm/release/ -T ../../evbarm/tools/ release

• Finally, copy all the archives and object files from
  

evbarm/dest/usr/lib/

to

evbarm/tools/arm--netbsdelf/lib/

To build the NetBSD userland libraries / components for Big Endian ARM

./build.sh -U -u -m evbarm -a armeb release

To install debootstrap on a Debian system.

apt-get install debootstrap

To search for a particular package on the apt-get registry

apt-cache search <package_name>

Ex

apt-cache search debootstrap

To debootstrap a lenny system

- debootstrap --arch amd64 lenny /opt/chroot-lenny http://snapshot.debian.org/archive/debian/20070730T000000Z/
- debootstrap --variant=buildd --arch amd64 lenny /opt/chroot/lenny http://archive.debian.org/debian/
- debootstrap --no-check-gpg lenny /opt/chroot/lenny http://archive.debian.org/debian

+ debootstrap --variant=buildd --no-check-gpg lenny /opt/chroot/lenny http://archive.debian.org/debian

Make sure to add --variant=buildd or else tools such as apt-get won't be installed.

• Running ARM in Big Endian Mode
  
• To properly build a NetBSD binary using the NetBSD infrastructure on Linux host, see 🙈
• The FreeBSD manual page for crunchgen, see 🙈
• Building a Cross Compile toolchain in GNU/Linux for FreeBSD
• Crosscompiling NetBSD with build.sh - Official

• Add table of contents this markdown document