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checking build system type... x86_64-unknown-cygwin
checking host system type... x86_64-unknown-cygwin
checking for a BSD-compatible install... /usr/bin/install -c
checking whether build environment is sane... yes
checking for a thread-safe mkdir -p... /usr/bin/mkdir -p
checking for gawk... gawk
checking whether make sets $(MAKE)... yes
checking whether make supports nested variables... yes
checking how to print strings... printf
checking for style of include used by make... GNU
checking for gcc... gcc
checking whether the C compiler works... yes
checking for C compiler default output file name... a.exe
checking for suffix of executables... .exe
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 dependency style of gcc... gcc3
checking for a sed that does not truncate output... /usr/bin/sed
checking for grep that handles long lines and -e... /usr/bin/grep
checking for egrep... /usr/bin/grep -E
checking for fgrep... /usr/bin/grep -F
checking for ld used by gcc... /usr/x86_64-pc-cygwin/bin/ld.exe
checking if the linker (/usr/x86_64-pc-cygwin/bin/ld.exe) 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... 8192
checking how to convert x86_64-unknown-cygwin file names to x86_64-unknown-cygwin format... func_convert_file_noop
checking how to convert x86_64-unknown-cygwin file names to toolchain format... func_convert_file_noop
checking for /usr/x86_64-pc-cygwin/bin/ld.exe option to reload object files... -r
checking for objdump... objdump
checking how to recognize dependent libraries... file_magic ^x86 archive import|^x86 DLL
checking for dlltool... dlltool
checking how to associate runtime and link libraries... func_cygming_dll_for_implib
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 gcc object... ok
checking for sysroot... no
checking for a working dd... /usr/bin/dd
checking how to truncate binary pipes... /usr/bin/dd bs=4096 count=1
checking for mt... no
checking if : 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... -DDLL_EXPORT -DPIC
checking if gcc PIC flag -DDLL_EXPORT -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/x86_64-pc-cygwin/bin/ld.exe) supports shared libraries... yes
checking whether -lc should be explicitly linked in... yes
checking dynamic linker characteristics... Win32 ld.exe
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 __attribute__((deprecated))... yes
checking for __attribute__((deprecated))... yes
configure: pkgconfig directory is ${exec_prefix}/lib/pkgconfig
configure: bash-completion directory is ${datarootdir}/bash-completion/completions
configure: zsh-completion directory is ${datarootdir}/zsh/site-functions
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 dependency style of gcc... (cached) gcc3
checking for pkg-config... /usr/bin/pkg-config
checking pkg-config is at least version 0.9.0... yes
checking if gcc supports -Wall... yes
checking if gcc supports -Wextra... yes
checking if gcc supports -Wpedantic... yes
checking if gcc supports -Wformat=2... yes
checking if gcc supports -Wsign-conversion... yes
checking if gcc supports -Wuninitialized... yes
checking if gcc supports -Wstrict-overflow... yes
checking if gcc supports -Wshadow... yes
checking if gcc supports -Wdouble-promotion... yes
checking if gcc supports -Wswitch-default... yes
checking if gcc supports -Bsymbolic... yes
checking for md5sum... md5sum
checking for memory.h... (cached) yes
checking for stdlib.h... (cached) yes
checking for string.h... (cached) yes
checking for unistd.h... (cached) yes
checking for stdint.h... (cached) yes
checking sys/unistd.h usability... yes
checking sys/unistd.h presence... yes
checking for sys/unistd.h... yes
checking getopt.h usability... yes
checking getopt.h presence... yes
checking for getopt.h... yes
checking for sys/types.h... (cached) yes
checking for sys/stat.h... (cached) yes
checking fcntl.h usability... yes
checking fcntl.h presence... yes
checking for fcntl.h... yes
checking io.h usability... yes
checking io.h presence... yes
checking for io.h... yes
checking errno.h usability... yes
checking errno.h presence... yes
checking for errno.h... yes
checking limits.h usability... yes
checking limits.h presence... yes
checking for limits.h... yes
checking sys/time.h usability... yes
checking sys/time.h presence... yes
checking for sys/time.h... yes
checking time.h usability... yes
checking time.h presence... yes
checking for time.h... yes
checking signal.h usability... yes
checking signal.h presence... yes
checking for signal.h... yes
checking sys/select.h usability... yes
checking sys/select.h presence... yes
checking for sys/select.h... yes
checking sys/signal.h usability... yes
checking sys/signal.h presence... yes
checking for sys/signal.h... yes
checking termios.h usability... yes
checking termios.h presence... yes
checking for termios.h... yes
checking sys/ioctl.h usability... yes
checking sys/ioctl.h presence... yes
checking for sys/ioctl.h... yes
checking for stdlib.h... (cached) yes
checking for GNU libc compatible malloc... yes
checking for stdlib.h... (cached) yes
checking for GNU libc compatible realloc... yes
checking for memset... yes
checking for getopt_long... yes
checking for memcpy... yes
checking for memmove... yes
checking for setmode... no
checking for _setmode... yes
checking for signal... yes
checking for usleep... yes
checking for strdup... yes
checking for strtoul... yes
checking for calloc... yes
checking for clock... yes
checking for clearerr... yes
checking for stat... yes
checking for setjmp... yes
checking for strerror... yes
checking for isatty... yes
checking for strncmp... yes
checking for ldiv... yes
checking for strtol... yes
checking for pow... yes
checking whether SIGINT is declared... yes
checking whether SIGTERM is declared... yes
checking whether SIGHUP is declared... yes
checking curl/curl.h usability... yes
checking curl/curl.h presence... yes
checking for curl/curl.h... yes
checking for curl_easy_cleanup in -lcurl... yes
configure: libcurl cflags is -I/usr/local/include
configure: libcurl libs is -L/usr/local/lib -lcurl
checking jpeglib.h usability... no
checking jpeglib.h presence... no
checking for jpeglib.h... no
checking for LIBJPEG... no
configure: libjpeg is not available
checking png.h usability... no
checking png.h presence... no
checking for png.h... no
checking for LIBPNG... no
configure: libpng is not available
checking for a Python interpreter with version >= 2.3... python
checking for python... /usr/bin/python
checking for python version... 2.7
checking for python platform... cygwin
checking for python script directory... ${prefix}/lib/python2.7/site-packages
checking for python extension module directory... ${exec_prefix}/lib/python2.7/site-packages
checking that generated files are newer than configure... done
configure: creating ./config.status
config.status: creating Makefile
config.status: creating libsixel.pc
config.status: creating package.json.in
config.status: creating include/sixel.h
config.status: creating src/Makefile
config.status: creating include/Makefile
config.status: creating converters/Makefile
config.status: creating tools/Makefile
config.status: creating tools/libsixel-config
config.status: creating python/Makefile
config.status: creating config.h
config.status: executing depfiles commands
config.status: executing libtool commands


libsixel was configured as follows

       Loader component    : stb_image
       libcurl integration : yes
       pkg-config dir      : ${exec_prefix}/lib/pkgconfig
       Bash completion dir : ${datarootdir}/bash-completion/completions
       Zsh completion dir  : ${datarootdir}/zsh/site-functions
       python bindings     : yes: ${prefix}/lib/python2.7/site-packages
       gcov integration    : no
       debugging           : no
       tests               : no