checking whether to enable maintainer-specific portions of Makefiles... no checking for clang... clang checking whether the C compiler works... yes checking for C compiler default output file name... a.out checking for suffix of executables... checking whether we are cross compiling... no checking for suffix of object files... o checking whether we are using the GNU C compiler... yes checking whether clang accepts -g... yes checking for clang option to accept ISO C89... none needed checking whether clang understands -c and -o together... yes checking for clang++... clang++ checking whether we are using the GNU C++ compiler... yes checking whether clang++ accepts -g... yes checking for clang... clang checking whether we are using the GNU Objective C compiler... yes checking whether clang accepts -g... yes checking for clang++... clang++ checking whether we are using the GNU Objective C++ compiler... yes checking whether clang++ accepts -g... yes checking for System.framework/PrivateHeaders... no checking how to run the C preprocessor... clang -E checking for grep that handles long lines and -e... /bin/grep checking for egrep... /bin/grep -E checking for ANSI C header files... yes checking for sys/types.h... yes checking for sys/stat.h... yes checking for stdlib.h... yes checking for string.h... yes checking for memory.h... yes checking for strings.h... yes checking for inttypes.h... yes checking for stdint.h... yes checking for unistd.h... yes checking minix/config.h usability... no checking minix/config.h presence... no checking for minix/config.h... no checking whether it is safe to define __EXTENSIONS__... yes checking for a BSD-compatible install... /usr/bin/install -c checking whether build environment is sane... yes checking for a thread-safe mkdir -p... /bin/mkdir -p checking for gawk... gawk checking whether make sets $(MAKE)... yes checking whether make supports nested variables... yes checking build system type... x86_64-unknown-linux-gnu checking host system type... x86_64-unknown-linux-gnu checking how to print strings... printf checking for a sed that does not truncate output... /bin/sed checking for fgrep... /bin/grep -F checking for ld used by clang... /usr/bin/ld checking if the linker (/usr/bin/ld) is GNU ld... yes checking for BSD- or MS-compatible name lister (nm)... /usr/bin/nm -B checking the name lister (/usr/bin/nm -B) interface... BSD nm checking whether ln -s works... yes checking the maximum length of command line arguments... 1572864 checking whether the shell understands some XSI constructs... yes checking whether the shell understands "+="... yes checking how to convert x86_64-unknown-linux-gnu file names to x86_64-unknown-linux-gnu format... func_convert_file_noop checking how to convert x86_64-unknown-linux-gnu file names to toolchain format... func_convert_file_noop checking for /usr/bin/ld option to reload object files... -r checking for objdump... objdump checking how to recognize dependent libraries... pass_all checking for dlltool... no checking how to associate runtime and link libraries... printf %s\n checking for ar... ar checking for archiver @FILE support... @ checking for strip... strip checking for ranlib... ranlib checking command to parse /usr/bin/nm -B output from clang object... ok checking for sysroot... no checking for mt... mt checking if mt is a manifest tool... no checking for dlfcn.h... yes checking for objdir... .libs checking if clang supports -fno-rtti -fno-exceptions... yes checking for clang option to produce PIC... -fPIC -DPIC checking if clang PIC flag -fPIC -DPIC works... yes checking if clang static flag -static works... yes checking if clang supports -c -o file.o... yes checking if clang supports -c -o file.o... (cached) yes checking whether the clang linker (/usr/bin/ld -m elf_x86_64) supports shared libraries... yes checking whether -lc should be explicitly linked in... no checking dynamic linker characteristics... GNU/Linux ld.so checking how to hardcode library paths into programs... immediate checking whether stripping libraries is possible... yes checking if libtool supports shared libraries... yes checking whether to build shared libraries... yes checking whether to build static libraries... no checking how to run the C++ preprocessor... clang++ -E checking for ld used by clang++... /usr/bin/ld -m elf_x86_64 checking if the linker (/usr/bin/ld -m elf_x86_64) is GNU ld... yes checking whether the clang++ linker (/usr/bin/ld -m elf_x86_64) supports shared libraries... yes checking for clang++ option to produce PIC... -fPIC -DPIC checking if clang++ PIC flag -fPIC -DPIC works... yes checking if clang++ static flag -static works... yes checking if clang++ supports -c -o file.o... yes checking if clang++ supports -c -o file.o... (cached) yes checking whether the clang++ linker (/usr/bin/ld -m elf_x86_64) supports shared libraries... yes checking dynamic linker characteristics... (cached) GNU/Linux ld.so checking how to hardcode library paths into programs... immediate checking for mig... no checking for dtrace... no checking for leaks... no checking for gcc atomic builtins... yes checking for library containing clock_gettime... none required checking for library containing pthread_create... -lpthread checking for pkg-config... /usr/bin/pkg-config checking pkg-config is at least version 0.9.0... yes checking sys/event.h usability... no checking sys/event.h presence... no checking for sys/event.h... no checking for KQUEUE... yes checking for strlcpy... no checking for BSD_OVERLAY... yes checking for getprogname... no checking for BSD_OVERLAY... yes checking for ANSI C header files... (cached) yes checking TargetConditionals.h usability... no checking TargetConditionals.h presence... no checking for TargetConditionals.h... no checking pthread_np.h usability... no checking pthread_np.h presence... no checking for pthread_np.h... no checking malloc/malloc.h usability... no checking malloc/malloc.h presence... no checking for malloc/malloc.h... no checking libkern/OSCrossEndian.h usability... no checking libkern/OSCrossEndian.h presence... no checking for libkern/OSCrossEndian.h... no checking libkern/OSAtomic.h usability... no checking libkern/OSAtomic.h presence... no checking for libkern/OSAtomic.h... no checking sys/guarded.h usability... no checking sys/guarded.h presence... no checking for sys/guarded.h... no checking fcntl.h usability... yes checking fcntl.h presence... yes checking for fcntl.h... yes checking pthread_machdep.h usability... no checking pthread_machdep.h presence... no checking for pthread_machdep.h... no checking pthread/qos.h usability... no checking pthread/qos.h presence... no checking for pthread/qos.h... no checking for libproc_internal.h... no checking for pthread_workqueue_setdispatch_np... no checking for _pthread_workqueue_init... no checking CoreFoundation/CoreFoundation.h usability... no checking CoreFoundation/CoreFoundation.h presence... no checking for CoreFoundation/CoreFoundation.h... no checking how to run the Objective C preprocessor... clang -E checking Foundation/Foundation.h usability... no checking Foundation/Foundation.h presence... no checking for Foundation/Foundation.h... no checking for objc/objc-internal.h... no checking mach/mach.h usability... no checking mach/mach.h presence... no checking for mach/mach.h... no checking whether CLOCK_UPTIME is declared... no checking whether CLOCK_MONOTONIC is declared... yes checking whether NOTE_NONE is declared... no checking whether NOTE_REAP is declared... no checking whether NOTE_SIGNAL is declared... no checking whether FD_COPY is declared... no checking whether SIGEMT is declared... no checking whether VQ_UPDATE is declared... no checking whether VQ_VERYLOWDISK is declared... no checking whether program_invocation_short_name is declared... yes checking for pthread_key_init_np... no checking for pthread_main_np... no checking for mach_absolute_time... no checking for malloc_create_zone... no checking for sysconf... yes checking whether POSIX_SPAWN_START_SUSPENDED is declared... no checking for sem_init... yes checking linux/futex.h usability... yes checking linux/futex.h presence... yes checking for linux/futex.h... yes checking what semaphore type to use... Futex semaphores checking for sys/cdefs.h... yes checking for C Blocks support... -fblocks checking whether additional libraries are required for the Blocks runtime... -lBlocksRuntime checking for C++ Blocks support... -fblocks checking whether additional libraries are required for the Blocks runtime... no checking for -fvisibility=hidden... yes checking for -momit-leaf-frame-pointer... yes checking that generated files are newer than configure... done configure: creating ./config.status config.status: creating Makefile config.status: creating dispatch/Makefile config.status: creating man/Makefile config.status: creating os/Makefile config.status: creating private/Makefile config.status: creating src/Makefile config.status: creating tests/Makefile config.status: creating config/config.h config.status: linking .//private to tests/dispatch config.status: linking tests/leaks-wrapper.sh to tests/leaks-wrapper config.status: executing libtool commands === configuring in libpwq (/usr/local/src/Kitura/swift-corelibs-libdispatch/libpwq) configure: running /bin/bash ./configure --disable-option-checking '--prefix=/usr' '--disable-libpwq-install' '--with-swift-toolchain=/usr' --cache-file=/dev/null --srcdir=. checking build system type... x86_64-unknown-linux-gnu checking host system type... x86_64-unknown-linux-gnu checking how to print strings... printf checking for gcc... gcc checking whether the C compiler works... yes checking for C compiler default output file name... a.out checking for suffix of executables... checking whether we are cross compiling... no checking for suffix of object files... o checking whether we are using the GNU C compiler... yes checking whether gcc accepts -g... yes checking for gcc option to accept ISO C89... none needed checking whether gcc understands -c and -o together... yes checking for a sed that does not truncate output... /bin/sed checking for grep that handles long lines and -e... /bin/grep checking for egrep... /bin/grep -E checking for fgrep... /bin/grep -F checking for ld used by gcc... /usr/bin/ld checking if the linker (/usr/bin/ld) is GNU ld... yes checking for BSD- or MS-compatible name lister (nm)... /usr/bin/nm -B checking the name lister (/usr/bin/nm -B) interface... BSD nm checking whether ln -s works... yes checking the maximum length of command line arguments... 1572864 checking whether the shell understands some XSI constructs... yes checking whether the shell understands "+="... yes checking how to convert x86_64-unknown-linux-gnu file names to x86_64-unknown-linux-gnu format... func_convert_file_noop checking how to convert x86_64-unknown-linux-gnu file names to toolchain format... func_convert_file_noop checking for /usr/bin/ld option to reload object files... -r checking for objdump... objdump checking how to recognize dependent libraries... pass_all checking for dlltool... no checking how to associate runtime and link libraries... printf %s\n checking for ar... ar checking for archiver @FILE support... @ checking for strip... strip checking for ranlib... ranlib checking for gawk... gawk checking command to parse /usr/bin/nm -B output from gcc object... ok checking for sysroot... no checking for mt... mt checking if mt is a manifest tool... no checking how to run the C preprocessor... gcc -E checking for ANSI C header files... yes checking for sys/types.h... yes checking for sys/stat.h... yes checking for stdlib.h... yes checking for string.h... yes checking for memory.h... yes checking for strings.h... yes checking for inttypes.h... yes checking for stdint.h... yes checking for unistd.h... yes checking for dlfcn.h... yes checking for objdir... .libs checking if gcc supports -fno-rtti -fno-exceptions... no checking for gcc option to produce PIC... -fPIC -DPIC checking if gcc PIC flag -fPIC -DPIC works... yes checking if gcc static flag -static works... yes checking if gcc supports -c -o file.o... yes checking if gcc supports -c -o file.o... (cached) yes checking whether the gcc linker (/usr/bin/ld -m elf_x86_64) supports shared libraries... yes checking whether -lc should be explicitly linked in... no checking dynamic linker characteristics... GNU/Linux ld.so checking how to hardcode library paths into programs... immediate checking whether stripping libraries is possible... yes checking if libtool supports shared libraries... yes checking whether to build shared libraries... yes checking whether to build static libraries... yes checking for a BSD-compatible install... /usr/bin/install -c checking whether build environment is sane... yes checking for a thread-safe mkdir -p... /bin/mkdir -p checking whether make sets $(MAKE)... yes checking for style of include used by make... GNU checking whether make supports nested variables... yes checking dependency style of gcc... gcc3 checking for gcc... (cached) gcc checking whether we are using the GNU C compiler... (cached) yes checking whether gcc accepts -g... (cached) yes checking for gcc option to accept ISO C89... (cached) none needed checking whether gcc understands -c and -o together... (cached) yes checking that generated files are newer than configure... done configure: creating ./config.status config.status: creating Makefile config.status: creating config.h config.status: executing libtool commands config.status: executing depfiles commands