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authorEfraim Flashner <efraim@flashner.co.il>2018-05-16 15:05:49 +0300
committerEfraim Flashner <efraim@flashner.co.il>2018-05-17 20:37:27 +0300
commit162825f9653f1ba050e40f0ca96d1eb3491a9207 (patch)
tree6ce31d553d562e0eacf32edeed68e6354f9279e7 /doc
parent17aca5c4d273c1f514f8623e555660b99ed90fee (diff)
daemon: Allow building for armhf-linux on aarch64-linux.
* nix/libstore/build.cc (canBuildLocally): Allow building armhf-linux builds on aarch64-linux. (DerivationGoal::runChild) Throw error if attempting to build for armhf-linux on an unsupported platform. * doc/guix.texi (Invoking guix build): Document how to build natively for armhf-linux on aarch64-linux. Add note that on some aarch64 machines this is unsupported.
Diffstat (limited to 'doc')
-rw-r--r--doc/guix.texi9
1 files changed, 8 insertions, 1 deletions
diff --git a/doc/guix.texi b/doc/guix.texi
index a12210db8a..005c0597ad 100644
--- a/doc/guix.texi
+++ b/doc/guix.texi
@@ -5855,9 +5855,16 @@ information on cross-compilation.
An example use of this is on Linux-based systems, which can emulate
different personalities. For instance, passing
-@code{--system=i686-linux} on an @code{x86_64-linux} system allows you
+@code{--system=i686-linux} on an @code{x86_64-linux} system or
+@code{--system=armhf-linux} on an @code{aarch64-linux} system allows you
to build packages in a complete 32-bit environment.
+@quotation Note
+Building for an @code{armhf-linux} system is unconditionally enabled on
+@code{aarch64-linux} machines, although certain aarch64 chipsets do not
+allow for this functionality, notably the ThunderX.
+@end quotation
+
Similarly, when transparent emulation with QEMU and @code{binfmt_misc}
is enabled (@pxref{Virtualization Services,
@code{qemu-binfmt-service-type}}), you can build for any system for