[OE-core] ncurses-native compile error -- i'm starting to blame gcc-5.0.0

[Robert P. J. Day]

  (posted about this on YP list earlier but i figured i might as well
strip this down to its essentials and use pure OE to reproduce.)

  on 64-bit, fully-updated fedora rawhide system, with gcc:

$ gcc --version
gcc (GCC) 5.0.0 20150208 (Red Hat 5.0.0-0.10)
Copyright (C) 2015 Free Software Foundation, Inc.
This is free software; see the source for copying conditions.  There is NO
warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
$

  using master branch of OE, i tried to build
qemux86/core-image-minimal and got precisely the same error i reported
on YP list:
=====================
gcc  -DHAVE_CONFIG_H -I../ncurses -I/home/rpjday/oe/builds/oe/qemux86/tmp-glibc/work/x86_64-linux/ncurses-native/5.9-r15.1/ncurses-5.9/ncurses -isystem/home/rpjday/oe/builds/oe/qemux86/tmp-glibc/sysroots/x86_64-linux/usr/include -D_GNU_SOURCE -DNDEBUG -I. -I../include -I/home/rpjday/oe/builds/oe/qemux86/tmp-glibc/work/x86_64-linux/ncurses-native/5.9-r15.1/ncurses-5.9/ncurses/../include -I/home/rpjday/oe/builds/oe/qemux86/tmp-glibc/sysroots/x86_64-linux/usr/include -isystem/home/rpjday/oe/builds/oe/qemux86/tmp-glibc/sysroots/x86_64-linux/usr/include -D_GNU_SOURCE -O2 -pipe  --param max-inline-insns-single=1200 -fPIC -c /home/rpjday/oe/builds/oe/qemux86/tmp-glibc/work/x86_64-linux/ncurses-native/5.9-r15.1/ncurses-5.9/ncurses/base/lib_inchstr.c -o ../obj_s/lib_inchstr.o
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)
                                                        ^
gcc  -DHAVE_CONFIG_H -I../ncurses -I/home/rpjday/oe/builds/oe/qemux86/tmp-glibc/work/x86_64-linux/ncurses-native/5.9-r15.1/ncurses-5.9/ncurses -isystem/home/rpjday/oe/builds/oe/qemux86/tmp-glibc/sysroots/x86_64-linux/usr/include -D_GNU_SOURCE -DNDEBUG -I. -I../include -I/home/rpjday/oe/builds/oe/qemux86/tmp-glibc/work/x86_64-linux/ncurses-native/5.9-r15.1/ncurses-5.9/ncurses/../include -I/home/rpjday/oe/builds/oe/qemux86/tmp-glibc/sysroots/x86_64-linux/usr/include -isystem/home/rpjday/oe/builds/oe/qemux86/tmp-glibc/sysroots/x86_64-linux/usr/include -D_GNU_SOURCE -O2 -pipe  --param max-inline-insns-single=1200 -fPIC -c /home/rpjday/oe/builds/oe/qemux86/tmp-glibc/work/x86_64-linux/ncurses-native/5.9-r15.1/ncurses-5.9/ncurses/base/lib_initscr.c -o ../obj_s/lib_initscr.o
Makefile:1682: recipe for target '../obj_s/lib_gen.o' failed
make[1]: *** [../obj_s/lib_gen.o] Error 1
make[1]: *** Waiting for unfinished jobs....
make[1]: Leaving directory '/home/rpjday/oe/builds/oe/qemux86/tmp-glibc/work/x86_64-linux/ncurses-native/5.9-r15.1/build/narrowc/ncurses'
Makefile:134: recipe for target 'libs' failed
make: *** [libs] Error 2
make: Leaving directory '/home/rpjday/oe/builds/oe/qemux86/tmp-glibc/work/x86_64-linux/ncurses-native/5.9-r15.1/build/narrowc'
ERROR: oe_runmake failed
WARNING: /home/rpjday/oe/builds/oe/qemux86/tmp-glibc/work/x86_64-linux/ncurses-native/5.9-r15.1/temp/run.do_compile.19602:1 exit 1 from
  exit 1
ERROR: Function failed: do_compile (log file is located at /home/rpjday/oe/builds/oe/qemux86/tmp-glibc/work/x86_64-linux/ncurses-native/5.9-r15.1/temp/log.do_compile.19602)
======================

  AFAIK, the selected version of ncurses (5.9) hasn't changed in quite
some time and i've done countless builds of qemu core-image-minimal
images over the last few months, so i'm guessing this latest version
of gcc is doing something strange, or it's just exposing a problem in
the ncurses source that's been hidden all this time.

  has anyone else tried the above with the latest version of gcc?
because i can't really think what else might be to blame.

rday

-- 

========================================================================
Robert P. J. Day                                 Ottawa, Ontario, CANADA
                        http://crashcourse.ca

Twitter:                                       http://twitter.com/rpjday
LinkedIn:                               http://ca.linkedin.com/in/rpjday
========================================================================