[OE-core] what feature fixed the gcc-5 preprocessor build error from a few months back?
Robert P. J. Day
rpjday at crashcourse.ca
Mon Dec 7 12:41:46 UTC 2015
On Mon, 7 Dec 2015, Andreas Oberritter wrote:
> Hello Robert,
>
> On 07.12.2015 10:44, Robert P. J. Day wrote:
> >
> > once upon a time, i asked a question about the origin of this OE
> > build error using gcc-5 to build ncurses-native:
> >
> >> In file included from
> > /home/rpjday/oe/builds/oe/qemux86/tmp-glibc/work/x86_64-linux/ncurses-native/5.9-r15.1/ncurses-5.9/ncurses/curses.priv.h:283:0,
> >> from ../ncurses/lib_gen.c:19:
> >> _20141.c:835:15: error: expected ')' before 'int'
> >> ../include/curses.h:1594:56: note: in definition of macro
> > 'mouse_trafo'
> >> #define mouse_trafo(y,x,to_screen)
> > wmouse_trafo(stdscr,y,x,to_screen)
> >
> > it didn't take long to be pointed to an explanation on the fedora
> > mailing list:
> >
> > http://lists.openembedded.org/pipermail/openembedded-core/2015-February/101820.html
> >
> > " these packages failed to build because of the changes in the preprocessor;
> > gcc started to generate line directives to better detect whether a macro
> > tokens come from a system header - see http://gcc.gnu.org/PR60723
> > The fix is to use the -P option if the code isn't prepared to deal with
> > such directives.
> >
> > so i just added to my local.conf:
> >
> > CPPFLAGS_append_pn-ncurses-native = " -P"
> >
> > that issue was apparently fixed and i haven't needed to do that for
> > a while. however, i'm now using someone's custom version of OE-core
> > and that very error is back, so what was it that was tweaked to deal
> > with it? thanks.
>
> see this commit in fido:
>
> commit 3a5435b371c84ec28b6936b8c8fa6541a592d061
> Author: Martin Stolpe <martinstolpe at gmail.com>
> Date: Wed Jun 10 16:28:26 2015 +0200
>
> ncurses: fix native builds when host has gcc5
>
> GCC"s preprocessor starts to add newlines which are not
> handled properly by ncurses build system startin from
> version 5.0.
>
> See also: https://bugzilla.yoctoproject.org/show_bug.cgi?id=7870
>
> Signed-off-by: Martin Stolpe <martin.stolpe at gmail.com>
> Signed-off-by: Joshua Lock <joshua.lock at collabora.co.uk>
>
> In master it's probably been solved by updating ncurses.
ah, that's pretty much the hackaround i used once upon a time, and i
can see that that patch is not in the vendor-specific OE-Core layer i
was given. so that definitely explains that problem. thanks.
rday
--
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Robert P. J. Day Ottawa, Ontario, CANADA
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