DosBox configure

$ ./configure
checking build system type... i686-pc-linux-gnu
checking host system type... i686-pc-linux-gnu
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 sets $(MAKE)... (cached) yes
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 for style of include used by make... GNU
checking dependency style of gcc... gcc3
checking how to run the C preprocessor... gcc -E
checking for g++... g++
checking whether we are using the GNU C++ compiler... yes
checking whether g++ accepts -g... yes
checking dependency style of g++... gcc3
checking for ranlib... ranlib
checking for sdl-config... /usr/local/bin/sdl-config
checking for SDL - version >= 1.2.0... yes
checking SDL version only being 1.2.X... yes
checking for an ANSI C-conforming const... yes
checking for inline... inline
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 for size_t... yes
checking whether struct tm is in sys/time.h or time.h... time.h
checking size of unsigned char... 1
checking size of unsigned short... 2
checking size of unsigned int... 4
checking size of unsigned long... 4
checking size of unsigned long long... 8
checking size of int *... 4
checking for stdlib.h... (cached) yes
checking for sys/types.h... (cached) yes
checking for sys/socket.h... yes
checking for netinet/in.h... yes
checking for pwd.h... yes
checking if environ can be included... yes
checking if environ can be linked... yes
checking if dirent includes d_type... yes
checking for powf in libm... yes
checking if compiler allows __attribute__... yes
checking if compiler allows __attribute__((always_inline)) ... no
checking if compiler allows __attribute__((fastcall)) ... yes
checking if compiler allows __builtin_expect... yes
checking for ALSA CFLAGS...
checking for ALSA LDFLAGS...  -lasound -lm -ldl -lpthread
checking for libasound headers version >= 0.9.0... found.
checking for snd_ctl_open in -lasound... yes
checking whether byte ordering is bigendian... no
checking for target cpu type... x86 compatible
checking whether x86 dynamic cpu core will be enabled... yes
checking whether recompiling cpu core will be enabled... no, using dynamic-x86
checking whether fpu emulation will be enabled... yes
checking whether x86 assembly fpu core will be enabled... yes
checking whether to enable unaligned memory access... yes
checking png.h usability... yes
checking png.h presence... yes
checking for png.h... yes
checking for png_get_io_ptr in -lpng... yes
checking SDL_net.h usability... no
checking SDL_net.h presence... no
checking for SDL_net.h... no
checking for SDLNet_Init in -lSDL_net... no
configure: WARNING: Can't find SDL_net, internal modem and ipx disabled
checking for main in -lX11... yes
checking X11/XKBlib.h usability... yes
checking X11/XKBlib.h presence... yes
checking for X11/XKBlib.h... yes
checking for XKBlib support... yes
checking for main in -lGL... yes
checking for main in -lopengl32... no
checking GL/gl.h usability... yes
checking GL/gl.h presence... yes
checking for GL/gl.h... yes
checking whether opengl display output will be enabled... yes
checking SDL_sound.h usability... no
checking SDL_sound.h presence... no
checking for SDL_sound.h... no
checking for Sound_Init in -lSDL_sound... no
checking for Sound_Seek in -lSDL_sound... no
configure: WARNING: Can't find libSDL_sound, libSDL_sound support disabled
checking sys/mman.h usability... yes
checking sys/mman.h presence... yes
checking for sys/mman.h... yes
checking for mprotect... yes
checking for setpriority support... yes
configure: creating ./config.status
config.status: creating Makefile
config.status: creating src/Makefile
config.status: creating src/cpu/Makefile
config.status: creating src/cpu/core_full/Makefile
config.status: creating src/cpu/core_normal/Makefile
config.status: creating src/cpu/core_dyn_x86/Makefile
config.status: creating src/cpu/core_dynrec/Makefile
config.status: creating src/debug/Makefile
config.status: creating src/dos/Makefile
config.status: creating src/fpu/Makefile
config.status: creating src/gui/Makefile
config.status: creating src/hardware/Makefile
config.status: creating src/hardware/serialport/Makefile
config.status: creating src/ints/Makefile
config.status: creating src/libs/Makefile
config.status: creating src/libs/zmbv/Makefile
config.status: creating src/libs/gui_tk/Makefile
config.status: creating src/misc/Makefile
config.status: creating src/shell/Makefile
config.status: creating src/platform/Makefile
config.status: creating src/platform/visualc/Makefile
config.status: creating visualc_net/Makefile
config.status: creating include/Makefile
config.status: creating docs/Makefile
config.status: creating config.h
config.status: executing depfiles commands