...found 9 targets...
...updating 4 targets...
gcc.compile.c++ libs/config/checks/architecture/bin/gcc-7.4.0/debug/32.o
...updated 4 targets...
...found 2 targets...
...updating 1 target...
gcc.compile.c++ libs/config/checks/architecture/bin/gcc-7.4.0/debug/arm.o
...updated 1 target...
...found 129 targets...
...updating 11 targets...
gcc.compile.c++ bin.v2/libs/regex/build/gcc-7.4.0/debug/threading-multi/visibility-hidden/has_icu_test.o
libs/regex/build/has_icu_test.cpp:12:10: fatal error: unicode/uversion.h: No such file or directory
 #include <unicode/uversion.h>
          ^~~~~~~~~~~~~~~~~~~~
compilation terminated.

    "/home/naourr/work/instance-0/output-1/host/bin/arm-linux-g++"   -fvisibility-inlines-hidden -D_LARGEFILE_SOURCE -D_LARGEFILE64_SOURCE -D_FILE_OFFSET_BITS=64  -Os   -fPIC -pthread -O0 -fno-inline -Wall -g -fvisibility=hidden  -DBOOST_ALL_NO_LIB=1 -DBOOST_HAS_ICU=1  -I"." -c -o "bin.v2/libs/regex/build/gcc-7.4.0/debug/threading-multi/visibility-hidden/has_icu_test.o" "libs/regex/build/has_icu_test.cpp"

...failed gcc.compile.c++ bin.v2/libs/regex/build/gcc-7.4.0/debug/threading-multi/visibility-hidden/has_icu_test.o...
...skipped <pbin.v2/libs/regex/build/gcc-7.4.0/debug/threading-multi/visibility-hidden>has_icu for lack of <pbin.v2/libs/regex/build/gcc-7.4.0/debug/threading-multi/visibility-hidden>has_icu_test.o...
...skipped <pbin.v2/libs/regex/build/gcc-7.4.0/debug/threading-multi/visibility-hidden>has_icu.passed for lack of <pbin.v2/libs/regex/build/gcc-7.4.0/debug/threading-multi/visibility-hidden>has_icu...
...failed updating 1 target...
...skipped 2 targets...
...updated 8 targets...
...found 8 targets...
...updating 7 targets...
gcc.compile.c++ bin.v2/libs/math/config/gcc-7.4.0/debug/threading-multi/visibility-hidden/has_gcc_visibility.o
...updated 7 targets...
...found 30 targets...
...updating 1 target...
gcc.compile.c++ bin.v2/libs/math/config/gcc-7.4.0/debug/threading-multi/visibility-hidden/has_long_double_support.o
In file included from /home/naourr/work/instance-0/output-1/host/opt/ext-toolchain/arm-buildroot-linux-uclibcgnueabihf/include/c++/7.4.0/arm-buildroot-linux-uclibcgnueabihf/bits/os_defines.h:39:0,
                 from /home/naourr/work/instance-0/output-1/host/opt/ext-toolchain/arm-buildroot-linux-uclibcgnueabihf/include/c++/7.4.0/arm-buildroot-linux-uclibcgnueabihf/bits/c++config.h:533,
                 from /home/naourr/work/instance-0/output-1/host/opt/ext-toolchain/arm-buildroot-linux-uclibcgnueabihf/include/c++/7.4.0/cstddef:49,
                 from ./boost/config/compiler/gcc.hpp:165,
                 from ./boost/config.hpp:39,
                 from ./boost/math/tools/config.hpp:13,
                 from libs/math/config/has_long_double_support.cpp:6:
/home/naourr/work/instance-0/output-1/host/arm-buildroot-linux-uclibcgnueabihf/sysroot/usr/include/features.h:218:5: warning: #warning requested reentrant code, but thread support was disabled [-Wcpp]
 #   warning requested reentrant code, but thread support was disabled
     ^~~~~~~
...updated 1 target...
...patience...
...found 164 targets...
...updating 7 targets...
gcc.compile.c++ bin.v2/check/predef/gcc-7.4.0/debug/address-model-32/architecture-arm/predef_check_cc_09a06289f4560e2f553bb0cbbec71436.o
...updated 7 targets...
...found 111 targets...
...updating 8 targets...
gcc.compile.c++ bin.v2/libs/thread/build/gcc-7.4.0/debug/threading-multi/visibility-hidden/has_atomic_flag_lockfree_test.o
In file included from /home/naourr/work/instance-0/output-1/host/opt/ext-toolchain/arm-buildroot-linux-uclibcgnueabihf/include/c++/7.4.0/arm-buildroot-linux-uclibcgnueabihf/bits/os_defines.h:39:0,
                 from /home/naourr/work/instance-0/output-1/host/opt/ext-toolchain/arm-buildroot-linux-uclibcgnueabihf/include/c++/7.4.0/arm-buildroot-linux-uclibcgnueabihf/bits/c++config.h:533,
                 from /home/naourr/work/instance-0/output-1/host/opt/ext-toolchain/arm-buildroot-linux-uclibcgnueabihf/include/c++/7.4.0/cstddef:49,
                 from ./boost/config/compiler/gcc.hpp:165,
                 from ./boost/config.hpp:39,
                 from ./boost/atomic/detail/config.hpp:18,
                 from ./boost/atomic/capabilities.hpp:17,
                 from ./boost/atomic/atomic.hpp:19,
                 from libs/thread/src/../build/../../../boost/atomic.hpp:12,
                 from libs/thread/src/../build/has_atomic_flag_lockfree_test.cpp:6:
/home/naourr/work/instance-0/output-1/host/arm-buildroot-linux-uclibcgnueabihf/sysroot/usr/include/features.h:218:5: warning: #warning requested reentrant code, but thread support was disabled [-Wcpp]
 #   warning requested reentrant code, but thread support was disabled
     ^~~~~~~
gcc.link bin.v2/libs/thread/build/gcc-7.4.0/debug/threading-multi/visibility-hidden/has_atomic_flag_lockfree
/home/naourr/work/instance-0/output-1/host/opt/ext-toolchain/bin/../lib/gcc/arm-buildroot-linux-uclibcgnueabihf/7.4.0/../../../../arm-buildroot-linux-uclibcgnueabihf/bin/ld: cannot find -lpthread
collect2: error: ld returned 1 exit status

    "/home/naourr/work/instance-0/output-1/host/bin/arm-linux-g++"    -o "bin.v2/libs/thread/build/gcc-7.4.0/debug/threading-multi/visibility-hidden/has_atomic_flag_lockfree" -Wl,--start-group "bin.v2/libs/thread/build/gcc-7.4.0/debug/threading-multi/visibility-hidden/has_atomic_flag_lockfree_test.o"  -Wl,-Bstatic  -Wl,-Bdynamic -lrt -Wl,--end-group -fPIC -pthread -g -fvisibility=hidden -fvisibility-inlines-hidden  

...failed gcc.link bin.v2/libs/thread/build/gcc-7.4.0/debug/threading-multi/visibility-hidden/has_atomic_flag_lockfree...
...failed updating 1 target...
...updated 7 targets...
...found 1 target...
...updating 1 target...
config-cache.write bin.v2/project-cache.jam
...updated 1 target...