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Re: [Patch,AVR] Fix PR51345: split multilibs for SPH / no-SPH devices
- From: Georg-Johann Lay <avr at gjlay dot de>
- To: "Joseph S. Myers" <joseph at codesourcery dot com>
- Cc: gcc-patches at gcc dot gnu dot org, Denis Chertykov <chertykov at gmail dot com>, Eric Weddington <eric dot weddington at atmel dot com>, Joerg Wunsch <joerg_wunsch at uriah dot heep dot sax dot de>
- Date: Sun, 18 Dec 2011 13:01:16 +0100
- Subject: Re: [Patch,AVR] Fix PR51345: split multilibs for SPH / no-SPH devices
- References: <4EEA048A.4070005@gjlay.de> <Pine.LNX.4.64.1112162313090.15768@digraph.polyomino.org.uk>
Joseph S. Myers schrieb:
On Thu, 15 Dec 2011, Georg-Johann Lay wrote:
Index: gcc/config/avr/genmultilib.awk
===================================================================
--- gcc/config/avr/genmultilib.awk (revision 0)
+++ gcc/config/avr/genmultilib.awk (revision 0)
@@ -0,0 +1,255 @@
This new file needs to have the standard copyright and license notices.
It's desirable to generate such notices in the output files as well.
What is the right copyright for the generated files?
avr/multilib.h is included in tm.h (by adding it to $tm_file in
config.gcc). It is used to override multilib.h in gcc.c. Is there a
better way to do that?
This leads to inclusion of avr/multilib.h in quite a number of sources,
amongst them fp-bit.c so that GPL is not appropriate because it would
turn libgcc to GPL.
I searched for something like $extra_gcc_headers in config.gcc so that
avr/multilib.h gets only included where it is actually needed but found
nothing like that and thus added to tm.h.
One more question: If I undestand corretly, inclusion of a GPLed file
turns the includer to GPL, too.
Is that right?
* If yes, libgcc is GPL and not LGPL + runtime exception because of
many GPL includes.
* If not, you can simply get non-GPL versions of files, say
/* Non-GPL version of gcc.c */
#include "gcc.c"
Johann