We are happy to announce the release of a new version of our freely available, pre-compiled cross-compilation toolchains, hosted at toolchains.bootlin.com.
This update covers a range of 43 CPU architecture variants, including: aarch64, aarch64be, arcle-750d, arcle-hs38, armv5-eabi, armv6-eabihf, armv7-eabihf, armebv7-eabihf, armv7m, m68k-68xxx, m68k-coldfire, microblazebe, microblazeel, mips32, mips32el, mips32r5el, mips32r6el, mips64-n32, mips64el-n32, mips64r6el-n32, openrisc, powerpc-440fp, powerpc-e300c3, powerpc-e500mc, powerpc64-e5500, powerpc64-e6500, powerpc64-power8, powerpc64le-power8, riscv32-ilp32d, riscv64-lp64d, s390x-z13, sh-sh4, sh-sh4aeb, sparc64, sparcv8, x86-64, x86-64-v2, x86-64-v3, x86-64-v4, x86-64-core-i7, x86-core2, x86-i686, xtensa-lx60.
As with previous releases, we provide two editions of each toolchain: a stable version based on the N-1 releases of GCC, binutils, GDB, and slightly older kernel headers, and a bleeding edge version featuring the latest available components. For the 2026.08 release, the versions are:
- The bleeding-edge toolchains are based on gcc 16.2, binutils 2.46.1, gdb 17.1, kernel headers 6.12, glibc 2.44, musl 1.2.6 or uclibc-ng 1.0.59.
- The stable toolchains are based on gcc 15.3, binutils 2.45.1, gdb 16.3, kernel headers 5.10, glibc 2.44, musl 1.2.6 or uclibc-ng 1.0.59.
All toolchains are built for x86-64 Linux hosts and are compatible even with relatively old Linux distributions. We welcome bug reports and feedback through our project issue tracker.

Since our 

Paul joined Bootlin in February 2026, after graduating from
Diogo joined Bootlin at the beginning of June 2026. Diogo graduated with a Master’s Degree in Engineering Physics from Instituto Superior Técnico (Portugal) in 2022. From 2023 to 2026, he worked at Siemens as an Embedded Linux engineer, working with edge industrial platforms and gaining experience in Yocto integration, platform maintenance and BSP kernel updates. He also contributed to the upstream Linux kernel, namely an Ethernet driver for the Texas Instruments AM654x SR1.0 SoC and a watchdog driver for the Intel Over-Clocking watchdog.
Bootlin’s
As part of our ongoing effort to improve and modernize our training offering, our three most popular training courses are now available on the
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