checking build system type... x86_64-unknown-linux-gnu
checking host system type... x86_64-unknown-linux-gnu
configure: -----------------------------------------------
configure: reading configure.user for your custom settings
configure: -----------------------------------------------
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-4.6 accepts -g... yes
checking for gcc-4.6 option to accept ISO C89... none needed
checking whether we are using the GNU C++ compiler... yes
checking whether g++-4.6 accepts -g... yes
checking for g++-4.6... g++-4.6
checking for ranlib... ranlib
checking whether g++-4.6 supports -fno-stack-protector... yes
checking whether g++-4.6 supports -Wl,--no-as-needed... yes
checking whether g++-4.6 supports -Wl,--as-needed... yes
checking for swapcontext... yes
checking if shared libs need -fPIC... yes
checking for dlopen with CFLAGS="" LIBS=""... no
checking if --export-dynamic linker option is supported/needed... test failed
checking for flags needed to link with static libs containing simple modules... --whole-archive
configure: NOTE: Use the following syntax when linking with static libraries
configure: containing simple modules and other dynamically registered components:
configure:    g++-4.6 ... -Wl,--whole-archive <libs> -Wl,--no-whole-archive ...
checking whether linker supports -rpath... yes
checking for bison... bison -y
checking for flex... flex
checking lex output file root... lex.yy
checking lex library... none needed
checking whether yytext is a pointer... no
checking for make... make
checking for perl... perl
checking for swig... swig
checking for math with CFLAGS="" LIBS=""... yes
checking for standard C++ lib with CFLAGS="" LIBS="-lstdc++"... yes
checking for dlopen with CFLAGS="" LIBS=""... no
checking for dlopen with CFLAGS="" LIBS="-ldl"... yes
checking for winsock with CFLAGS="" LIBS="-lwsock32"... no
checking for zlib with CFLAGS="-O2 -DNDEBUG=1 --std=c++11 -fPIC  -fno-stack-protector -DHAVE_SWAPCONTEXT " LIBS="-lz"... no
configure: error: zlib or zlib header file not found, please install it