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Date: Tue, 6 May 2014 14:24:14 +0200
From: Thomas Petazzoni <>
Cc: <>
Subject: musl support added in Buildroot


Buildroot ( is a popular embedded Linux build
system. We have recently (just today) added support for:

 * Building cross-toolchains with the musl C library, through what we
   call the "internal toolchain backend" (i.e Buildroot builds the
   cross compilation toolchain)

 * Using pre-existing musl cross-toolchains, as provided from, through what we call the "external toolchain
   backend" (i.e Buildroot does not build the cross compilation
   toolchain, and relies on a pre-existing one).

Both of these features will be part of the upcoming 2014.05 release.

As part of this effort, we will be adding in the future a musl
configuration to our autobuilders (
which will lead to a fairly heavy testing of musl, as the 1200+
packages of Buildroot will be built against it. There are chances that
we might be reporting some issues related to this testing.

Best regards,

Thomas Petazzoni, CTO, Free Electrons
Embedded Linux, Kernel and Android engineering

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