[boost] build failure in develop: chrono, type_traits?

Subject: [boost] build failure in develop: chrono, type_traits?
From: James E. King, III (jking_at_[hidden])
Date: 2018-05-08 11:45:55

The only change in my pull request was to remove a deprecated, unrelated
header in uuid.  This happened in the builds last night on develop:

In file included from ./boost/config.hpp:61:0,
                 from ./boost/chrono/config.hpp:15,
                 from
./boost/chrono/detail/inlined/process_cpu_clocks.hpp:15,
                 from libs\chrono\src\process_cpu_clocks.cpp:17:
./boost/type_traits/detail/common_arithmetic_type.hpp:209:27: error:
duplicate 'const'
     BOOST_STATIC_CONSTANT(const int, selector = sizeof(select(cond() ? T()
: U())));
                           ^
    "x86_64-w64-mingw32-g++.exe"   -std=c++03 -m64 -O0 -fno-inline -Wall
-pedantic -g -Wextra -Wno-long-long -DBOOST_ALL_NO_LIB=1
-DBOOST_All_STATIC_LINK=1 -DBOOST_SYSTEM_STATIC_LINK=1  -I"." -c -o
"bin.v2\libs\chrono\build\gcc-mingw64\debug\cxxstd-03-iso\link-static\process_cpu_clocks.o"
"libs\chrono\src\process_cpu_clocks.cpp"
...failed gcc.compile.c++
bin.v2\libs\chrono\build\gcc-mingw64\debug\cxxstd-03-iso\link-static\process_cpu_clocks.o...

Failed on cygwin and mingw builds:
https://ci.appveyor.com/project/jeking3/uuid-gaamf/build/1.0.116-develop/job/2oxg6m22urwaphyg

Also failed in c++03 builds on unix:
https://travis-ci.org/boostorg/uuid/jobs/376161574#L2158

gcc.compile.c++
../../bin.v2/libs/chrono/build/gcc-7/release/cxxstd-03-iso/link-static/thread_clock.o
In file included from ../../boost/config.hpp:61:0,
                 from ../../boost/chrono/config.hpp:15,
                 from ../../boost/chrono/detail/inlined/thread_clock.hpp:14,
                 from ../../libs/chrono/src/thread_clock.cpp:18:
../../boost/type_traits/detail/common_arithmetic_type.hpp:209:27: error:
duplicate ‘const’
     BOOST_STATIC_CONSTANT(const int, selector = sizeof(select(cond() ? T()
: U())));
                           ^
    "g++-7"   -std=c++03 -m64 -O3 -finline-functions -Wno-inline -Wall
-pedantic -Wextra -Wno-long-long -DBOOST_ALL_NO_LIB=1
-DBOOST_All_STATIC_LINK=1 -DBOOST_SYSTEM_STATIC_LINK=1 -DNDEBUG  -I"../.."
-c -o
"../../bin.v2/libs/chrono/build/gcc-7/release/cxxstd-03-iso/link-static/thread_clock.o"
"../../libs/chrono/src/thread_clock.cpp"
...failed gcc.compile.c++
../../bin.v2/libs/chrono/build/gcc-7/release/cxxstd-03-iso/link-static/thread_clock.o...

Thanks,

Jim