please drop build-dependency on g++-4.9 and ftbfs with GCC 5

[Steve Langasek]

The net-cpp package currently has a build-dependency on g++-4.9. This build-dependency is present because of the recommendations on https://wiki.ubuntu.com/cpp-11 about handling of C++11.

The C++11 ABI has now stabilized in gcc as of gcc 5; however, before we can switch to gcc 5, we first need to be able to do rebuild tests of the archive against this compiler.

To facilitate this, please drop the build-dependency on g++-4.9 from the package in wily. 4.9 will remain the default until all transition issues have been identified, so there is no risk of accidental ABI breakage here anymore.

[Matthias Klose (doko)]

raising importance, prevents build using GCC 5, which will become the default at the end of July

[Matthias Klose (doko)]

and ftbfs with GCC 5:

Scanning dependencies of target http_client_load_test
make[3]: Leaving directory '/scratch/packages/tmp/net-cpp-1.2.0+15.04.20150415.2/obj-x86_64-linux-gnu'
make -f tests/CMakeFiles/http_client_load_test.dir/build.make tests/CMakeFiles/http_client_load_test.dir/build
make[3]: Entering directory '/scratch/packages/tmp/net-cpp-1.2.0+15.04.20150415.2/obj-x86_64-linux-gnu'
/usr/bin/cmake -E cmake_progress_report /scratch/packages/tmp/net-cpp-1.2.0+15.04.20150415.2/obj-x86_64-linux-gnu/CMakeFiles 10
[ 83%] Building CXX object tests/CMakeFiles/http_client_load_test.dir/http_client_load_test.cpp.o
cd /scratch/packages/tmp/net-cpp-1.2.0+15.04.20150415.2/obj-x86_64-linux-gnu/tests && /usr/bin/g++ -g -O2 -fstack-protector-strong -Wformat -Werror=format-security -D_FORTIFY_SOURCE=2 -std=c++11 -Werror -Wall -fno-strict-aliasing -fvisibility=hidden -fvisibility-inlines-hidden -pedantic -Wextra -I/scratch/packages/tmp/net-cpp-1.2.0+15.04.20150415.2/include -I/scratch/packages/tmp/net-cpp-1.2.0+15.04.20150415.2/obj-x86_64-linux-gnu/tests -I/usr/include/gmock/include -I/usr/src/gmock/gtest/include -I/usr/include/jsoncpp -o CMakeFiles/http_client_load_test.dir/http_client_load_test.cpp.o -c /scratch/packages/tmp/net-cpp-1.2.0+15.04.20150415.2/tests/http_client_load_test.cpp
/scratch/packages/tmp/net-cpp-1.2.0+15.04.20150415.2/tests/http_client_load_test.cpp:120:19: error: '{anonymous}::is_initialized' defined but not used [-Werror=unused-variable]
 static const bool is_initialized = init();
                   ^
cc1plus: all warnings being treated as errors
tests/CMakeFiles/http_client_load_test.dir/build.make:57: recipe for target 'tests/CMakeFiles/http_client_load_test.dir/http_client_load_test.cpp.o' failed
make[3]: *** [tests/CMakeFiles/http_client_load_test.dir/http_client_load_test.cpp.o] Error 1
make[3]: Leaving directory '/scratch/packages/tmp/net-cpp-1.2.0+15.04.20150415.2/obj-x86_64-linux-gnu'
CMakeFiles/Makefile2:1123: recipe for target 'tests/CMakeFiles/http_client_load_test.dir/all' failed
make[2]: *** [tests/CMakeFiles/http_client_load_test.dir/all] Error 2
make[2]: Leaving directory '/scratch/packages/tmp/net-cpp-1.2.0+15.04.20150415.2/obj-x86_64-linux-gnu'
Makefile:129: recipe for target 'all' failed
make[1]: *** [all] Error 2
make[1]: Leaving directory '/scratch/packages/tmp/net-cpp-1.2.0+15.04.20150415.2/obj-x86_64-linux-gnu'
dh_auto_build: make -j1 returned exit code 2
debian/rules:9: recipe for target 'build' failed
make: *** [build] Error 2

[Matthias Klose (doko)]

now fixed in silo16