Fails to build with GCC 7

[sebastic]

As reported by Matthias Klose in Debian Bug #853602:

The package fails to build in a test rebuild on at least amd64 with
gcc-7/g++-7, but succeeds to build with gcc-6/g++-6. The
severity of this report may be raised before the buster release.
There is no need to fix this issue in time for the stretch release.

The full build log can be found at:
http://people.debian.org/~doko/logs/gcc7-20170126/pdal_1.4.0-1_unstable_gcc7.log
The last lines of the build log are at the end of this report.

To build with GCC 7, either set CC=gcc-7 CXX=g++-7 explicitly,
or install the gcc, g++, gfortran, ... packages from experimental.

apt-get -t experimental install g++

Common build failures are new warnings resulting in build failures with
-Werror turned on, or new/dropped symbols in Debian symbols files.
For other C/C++ related build failures see the porting guide at
http://gcc.gnu.org/gcc-7/porting_to.html

[...]
      ^
In file included from /<<PKGBUILDDIR>>/vendor/arbiter/arbiter.cpp:43:0:
/<<PKGBUILDDIR>>/vendor/arbiter/arbiter.hpp:223:20: note: candidate: pdal::arbiter::http::Response pdal::arbiter::http::Resource::exec(int)
     http::Response exec(std::function<http::Response()> f);
                    ^~~~
/<<PKGBUILDDIR>>/vendor/arbiter/arbiter.hpp:223:20: note:   no known conversion for argument 1 from 'pdal::arbiter::http::Resource::post(std::__cxx11::string, const std::vector<char>&, pdal::arbiter::http::Headers, pdal::arbiter::http::Query)::<lambda()>' to 'int'
/<<PKGBUILDDIR>>/vendor/arbiter/arbiter.cpp: At global scope:
/<<PKGBUILDDIR>>/vendor/arbiter/arbiter.cpp:2972:10: error: prototype for 'pdal::arbiter::http::Response pdal::arbiter::http::Resource::exec(std::function<pdal::arbiter::http::Response()>)' does not match any in class 'pdal::arbiter::http::Resource'
 Response Resource::exec(std::function<Response()> f)
          ^~~~~~~~
In file included from /<<PKGBUILDDIR>>/vendor/arbiter/arbiter.cpp:43:0:
/<<PKGBUILDDIR>>/vendor/arbiter/arbiter.hpp:223:20: error: candidate is: pdal::arbiter::http::Response pdal::arbiter::http::Resource::exec(int)
     http::Response exec(std::function<http::Response()> f);
                    ^~~~
vendor/arbiter/CMakeFiles/pdal_arbiter.dir/build.make:65: recipe for target 'vendor/arbiter/CMakeFiles/pdal_arbiter.dir/arbiter.cpp.o' failed
make[4]: *** [vendor/arbiter/CMakeFiles/pdal_arbiter.dir/arbiter.cpp.o] Error 1
make[4]: Leaving directory '/<<PKGBUILDDIR>>/obj-x86_64-linux-gnu'
CMakeFiles/Makefile2:3883: recipe for target 'vendor/arbiter/CMakeFiles/pdal_arbiter.dir/all' failed
make[3]: *** [vendor/arbiter/CMakeFiles/pdal_arbiter.dir/all] Error 2
make[3]: *** Waiting for unfinished jobs....
[  3%] Linking CXX static library ../../lib/libpdal_boost.a
cd /<<PKGBUILDDIR>>/obj-x86_64-linux-gnu/vendor/pdalboost && /usr/bin/cmake -P CMakeFiles/pdal_boost.dir/cmake_clean_target.cmake
cd /<<PKGBUILDDIR>>/obj-x86_64-linux-gnu/vendor/pdalboost && /usr/bin/cmake -E cmake_link_script CMakeFiles/pdal_boost.dir/link.txt --verbose=1
/usr/bin/ar qc ../../lib/libpdal_boost.a  CMakeFiles/pdal_boost.dir/libs/system/src/error_code.cpp.o CMakeFiles/pdal_boost.dir/libs/filesystem/src/codecvt_error_category.cpp.o CMakeFiles/pdal_boost.dir/libs/filesystem/src/operations.cpp.o CMakeFiles/pdal_boost.dir/libs/filesystem/src/path.cpp.o CMakeFiles/pdal_boost.dir/libs/filesystem/src/path_traits.cpp.o CMakeFiles/pdal_boost.dir/libs/filesystem/src/portability.cpp.o CMakeFiles/pdal_boost.dir/libs/filesystem/src/unique_path.cpp.o CMakeFiles/pdal_boost.dir/libs/filesystem/src/utf8_codecvt_facet.cpp.o
/usr/bin/ranlib ../../lib/libpdal_boost.a
make[4]: Leaving directory '/<<PKGBUILDDIR>>/obj-x86_64-linux-gnu'
[  3%] Built target pdal_boost
[  3%] Linking CXX executable ../bin/dimbuilder
cd /<<PKGBUILDDIR>>/obj-x86_64-linux-gnu/dimbuilder && /usr/bin/cmake -E cmake_link_script CMakeFiles/dimbuilder.dir/link.txt --verbose=1
/usr/bin/c++   -g -O2 -fdebug-prefix-map=/<<PKGBUILDDIR>>=. -specs=/usr/share/dpkg/no-pie-compile.specs -fstack-protector-strong -Wformat -Werror=format-security -Wdate-time -D_FORTIFY_SOURCE=2 -Wdate-time -D_FORTIFY_SOURCE=2 -Wextra -Wall -Wno-unused-parameter -Wno-unused-variable -Wpointer-arith -Wcast-align -Wcast-qual -Wredundant-decls -Wno-long-long -Wno-unknown-pragmas -Wno-deprecated-declarations -isystem /usr/local/include -std=c++11 -Wextra -Wall -Wno-unused-parameter -Wno-unused-variable -Wpointer-arith -Wcast-align -Wcast-qual -Wredundant-decls -Wno-long-long -Wno-unknown-pragmas -Wno-deprecated-declarations -isystem /usr/local/include -std=c++11 -O2 -g -DNDEBUG  -specs=/usr/share/dpkg/no-pie-link.specs -Wl,-z,relro -Wl,-z,now CMakeFiles/dimbuilder.dir/DimBuilder.cpp.o CMakeFiles/dimbuilder.dir/__/pdal/util/Utils.cpp.o  -o ../bin/dimbuilder -rdynamic -ljsoncpp -ldl
make[4]: Leaving directory '/<<PKGBUILDDIR>>/obj-x86_64-linux-gnu'
[  3%] Built target dimbuilder
[  3%] Linking CXX static library ../../lib/libgtest.a
cd /<<PKGBUILDDIR>>/obj-x86_64-linux-gnu/vendor/gtest && /usr/bin/cmake -P CMakeFiles/gtest.dir/cmake_clean_target.cmake
cd /<<PKGBUILDDIR>>/obj-x86_64-linux-gnu/vendor/gtest && /usr/bin/cmake -E cmake_link_script CMakeFiles/gtest.dir/link.txt --verbose=1
/usr/bin/ar qc ../../lib/libgtest.a  CMakeFiles/gtest.dir/src/gtest-all.cc.o
/usr/bin/ranlib ../../lib/libgtest.a
make[4]: Leaving directory '/<<PKGBUILDDIR>>/obj-x86_64-linux-gnu'
[  3%] Built target gtest
make[3]: Leaving directory '/<<PKGBUILDDIR>>/obj-x86_64-linux-gnu'
Makefile:163: recipe for target 'all' failed
make[2]: *** [all] Error 2
make[2]: Leaving directory '/<<PKGBUILDDIR>>/obj-x86_64-linux-gnu'
dh_auto_build: make -j64 returned exit code 2
debian/rules:47: recipe for target 'override_dh_auto_build' failed
make[1]: *** [override_dh_auto_build] Error 2
make[1]: Leaving directory '/<<PKGBUILDDIR>>'
debian/rules:16: recipe for target 'build' failed
make: *** [build] Error 2
dpkg-buildpackage: error: debian/rules build gave error exit status 2

[sebastic]

Full build log: pdal_1.4.0-1_unstable_gcc7.txt

All errors in the build log are for the arbiter embedded copy.

[abellgithub]

@connormanning: Can this be closed?