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

[Matthias Klose]

On 06/26/2015 11:36 PM, Jens Thiele wrote:
> 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?

you could use -P, or fix the parsing.