[Buildroot] [Bug 6944] building toolchain for sh4 fails

bugzilla at busybox.net bugzilla at busybox.net
Tue Sep 9 17:01:54 UTC 2014


https://bugs.busybox.net/show_bug.cgi?id=6944

--- Comment #11 from mail at waldemar-brodkorb.de 2014-09-09 17:01:53 UTC ---
Hi,

I don't think removing m4-nofpu is the right thing to create a good kernel.
As gcc does not include support for -mno-implicit-fp, there is no way around
using
a multilib gcc to compile a kernel without floating point instructions.

See here for an interesting thread:
http://sourceforge.net/p/linuxsh/mailman/linuxsh-dev/thread/3B732B78.28B8BF39@pocketpenguins.com/

It seems Codesourcery has some gcc patches included to support
-mno-implicit-fp.
But the gcc people have rejected it. 

best regards
 Waldemar

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