[Pkg-gauche-devel] Bug#777861: Bug#777861: Bug#777861: gauche-c-wrapper: ftbfs with GCC-5

[Jens Thiele]

Martin Michlmayr <tbm at hp.com> writes:

> I'm not Matthias, but I can confirm that the package fails to build in
> a Debian unstable chroot with GCC 5 the way Matthias reported.
>
> (sid-gcc5)1878:tbm at bl460gen8-30: ~/gauche-c-wrapper-0.6.1] cat test.h
> #define B() 1
> #define A B
> (sid-gcc5)1879:tbm at bl460gen8-30: ~/gauche-c-wrapper-0.6.1] echo -e "100\nB()\nA"|gcc-5 -E -include test.h -|tail
> # 1 "<built-in>"
> # 1 "<command-line>"
> # 1 "/usr/include/stdc-predef.h" 1 3 4
> # 1 "<command-line>" 2
> # 1 "./test.h" 1
> # 1 "<command-line>" 2
> # 1 "<stdin>"
> 100
> 1
> B

this looks good

> (sid-gcc5)1880:tbm at bl460gen8-30: ~/gauche-c-wrapper-0.6.1] gcc-5 --version
> gcc-5 (Debian 5.1.1-12) 5.1.1 20150622
> 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.
>
> Note that gcc-5 is in unstable, so you can easily reproduce this yourself
> with:
> CC=gcc-5 CXX=g++-5 dpkg-buildpackage -rfakeroot

just reproduced
and it looks like the problem is very similar to the one i found before

gcc preprocessor output changed and Scm_ParseMacroCode doesn't like it.
(lots of additional # xxx "<stdin>" lines and line breaks)

Is there some way to tell newer gcc preprocessor to try to produce
old-style output?