Bug#802343: libpar2: FTBFS: sigc++-2.0 requires -std=c++1

[Michael Biebl]

Control: severity -1 normal

On Mon, 19 Oct 2015 18:43:24 +0100 "Chris West (Faux)"
 wrote:
> Source: libpar2
> Version: 0.4-4
> Severity: serious
> Justification: fails to build from source
> Tags: sid stretch
> User: reproducible-bui...@lists.alioth.debian.org
> Usertags: ftbfs
> X-Debbugs-CC: reproducible-bui...@lists.alioth.debian.org
> 
> Dear Maintainer,
> 
> The package fails to build:
> 
> make  all-am
> make[2]: Entering directory '/libpar2-0.4'
> /bin/bash ./libtool  --tag=CXX   --mode=compile g++ -DHAVE_CONFIG_H -I. 
> -I/usr/include/sigc++-2.0 -I/usr/lib/x86_64-linux-gnu/sigc++-2.0/include   
> -D_FORTIFY_SOURCE=2 -Wall -g -O2 -fstack-protector-strong -Wformat 
> -Werror=format-security -c -o libpar2.lo libpar2.cpp
> libtool: compile:  g++ -DHAVE_CONFIG_H -I. -I/usr/include/sigc++-2.0 
> -I/usr/lib/x86_64-linux-gnu/sigc++-2.0/include -D_FORTIFY_SOURCE=2 -Wall -g 
> -O2 -fstack-protector-strong -Wformat -Werror=format-security -c libpar2.cpp  
> -fPIC -DPIC -o .libs/libpar2.o
> In file included from /usr/include/sigc++-2.0/sigc++/signal_base.h:26:0,
>  from /usr/include/sigc++-2.0/sigc++/signal.h:8,
>  from /usr/include/sigc++-2.0/sigc++/sigc++.h:86,
>  from libpar2.h:23,
>  from libpar2.cpp:21:
> /usr/include/sigc++-2.0/sigc++/trackable.h:115:3: warning: identifier 
> 'noexcept' is a keyword in C++11 [-Wc++0x-compat]
>trackable(trackable&& src) noexcept;
>^
> In file included from /usr/include/c++/5/type_traits:35:0,
>  from /usr/include/sigc++-2.0/sigc++/visit_each.h:22,
>  from /usr/include/sigc++-2.0/sigc++/functors/slot.h:6,
>  from /usr/include/sigc++-2.0/sigc++/signal_base.h:27,
>  from /usr/include/sigc++-2.0/sigc++/signal.h:8,
>  from /usr/include/sigc++-2.0/sigc++/sigc++.h:86,
>  from libpar2.h:23,
>  from libpar2.cpp:21:
> /usr/include/c++/5/bits/c++0x_warning.h:32:2: error: #error This file 
> requires compiler and library support for the ISO C++ 2011 standard. This 
> support is currently experimental, and must be enabled with the -std=c++11 or 
> -std=gnu++11 compiler options.
>  #error This file requires compiler and library support for the \
>   ^
> In file included from 
> /usr/include/sigc++-2.0/sigc++/adaptors/adaptor_trait.h:7:0,
>  from /usr/include/sigc++-2.0/sigc++/functors/slot.h:7,
>  from /usr/include/sigc++-2.0/sigc++/signal_base.h:27,
>  from /usr/include/sigc++-2.0/sigc++/signal.h:8,
>  from /usr/include/sigc++-2.0/sigc++/sigc++.h:86,
>  from libpar2.h:23,
>  from libpar2.cpp:21:
> /usr/include/sigc++-2.0/sigc++/functors/functor_trait.h:92:3: warning: 
> identifier 'decltype' is a keyword in C++11 [-Wc++0x-compat]
>static int check(X_functor* obj, decltype(_functor::operator()) p = 
> nullptr);
>^
> 
> See also this argument in glibmm2.4, although that doesn't apply to
> libpar2 as it's using sigc++-2.0 directly:
> https://bugs.debian.org/800371
> 

I've applied a workaround to libsigc++-2.0 which sets -std=c++11 via
pkg-config. This should allow libpar2 to build again. Thus making this
bug non-RC.
I'll keep this bug open though, since I want to drop that hack from
libsigc++-2.0 again. This can happen once all affected packages either
explicitly specify -std=c++11 (e.g. via CXXFLAGS in debian/rules) or GCC
6 becomes the default compiler, which will switch to -std=gnu++14

Regards,
Michael
-- 
Why is it that all of the instruments seeking intelligent life in the
universe are pointed away from Earth?



signature.asc
Description: OpenPGP digital signature

Bug#802343: libpar2: FTBFS: sigc++-2.0 requires -std=c++1

[Chris West (Faux)]

Source: libpar2
Version: 0.4-4
Severity: serious
Justification: fails to build from source
Tags: sid stretch
User: reproducible-bui...@lists.alioth.debian.org
Usertags: ftbfs
X-Debbugs-CC: reproducible-bui...@lists.alioth.debian.org

Dear Maintainer,

The package fails to build:

make  all-am
make[2]: Entering directory '/libpar2-0.4'
/bin/bash ./libtool  --tag=CXX   --mode=compile g++ -DHAVE_CONFIG_H -I. 
-I/usr/include/sigc++-2.0 -I/usr/lib/x86_64-linux-gnu/sigc++-2.0/include   
-D_FORTIFY_SOURCE=2 -Wall -g -O2 -fstack-protector-strong -Wformat 
-Werror=format-security -c -o libpar2.lo libpar2.cpp
libtool: compile:  g++ -DHAVE_CONFIG_H -I. -I/usr/include/sigc++-2.0 
-I/usr/lib/x86_64-linux-gnu/sigc++-2.0/include -D_FORTIFY_SOURCE=2 -Wall -g -O2 
-fstack-protector-strong -Wformat -Werror=format-security -c libpar2.cpp  -fPIC 
-DPIC -o .libs/libpar2.o
In file included from /usr/include/sigc++-2.0/sigc++/signal_base.h:26:0,
 from /usr/include/sigc++-2.0/sigc++/signal.h:8,
 from /usr/include/sigc++-2.0/sigc++/sigc++.h:86,
 from libpar2.h:23,
 from libpar2.cpp:21:
/usr/include/sigc++-2.0/sigc++/trackable.h:115:3: warning: identifier 
'noexcept' is a keyword in C++11 [-Wc++0x-compat]
   trackable(trackable&& src) noexcept;
   ^
In file included from /usr/include/c++/5/type_traits:35:0,
 from /usr/include/sigc++-2.0/sigc++/visit_each.h:22,
 from /usr/include/sigc++-2.0/sigc++/functors/slot.h:6,
 from /usr/include/sigc++-2.0/sigc++/signal_base.h:27,
 from /usr/include/sigc++-2.0/sigc++/signal.h:8,
 from /usr/include/sigc++-2.0/sigc++/sigc++.h:86,
 from libpar2.h:23,
 from libpar2.cpp:21:
/usr/include/c++/5/bits/c++0x_warning.h:32:2: error: #error This file requires 
compiler and library support for the ISO C++ 2011 standard. This support is 
currently experimental, and must be enabled with the -std=c++11 or -std=gnu++11 
compiler options.
 #error This file requires compiler and library support for the \
  ^
In file included from 
/usr/include/sigc++-2.0/sigc++/adaptors/adaptor_trait.h:7:0,
 from /usr/include/sigc++-2.0/sigc++/functors/slot.h:7,
 from /usr/include/sigc++-2.0/sigc++/signal_base.h:27,
 from /usr/include/sigc++-2.0/sigc++/signal.h:8,
 from /usr/include/sigc++-2.0/sigc++/sigc++.h:86,
 from libpar2.h:23,
 from libpar2.cpp:21:
/usr/include/sigc++-2.0/sigc++/functors/functor_trait.h:92:3: warning: 
identifier 'decltype' is a keyword in C++11 [-Wc++0x-compat]
   static int check(X_functor* obj, decltype(_functor::operator()) p = 
nullptr);
   ^

See also this argument in glibmm2.4, although that doesn't apply to
libpar2 as it's using sigc++-2.0 directly:
https://bugs.debian.org/800371

Full build log:
https://reproducible.debian.net/rb-pkg/unstable/amd64/libpar2.html

-- System Information:
Debian Release: stretch/sid
APT prefers unstable
APT policy: (500, 'unstable')
Architecture: amd64 (x86_64)