configure.in

完整的RTP RTSP代码库

{
    dnl Check for Linux 2.4 unified input event interface support
    AC_ARG_ENABLE(input-events,
[  --enable-input-events   use Linux 2.4 unified input interface [default=yes]],
                  , enable_input_events=yes)
    if test x$enable_input_events = xyes; then
        AC_MSG_CHECKING(for Linux 2.4 unified input interface)
        use_input_events=no
        AC_TRY_COMPILE([
          #include <linux/input.h>
        ],[
          #ifndef EVIOCGNAME
          #error EVIOCGNAME() ioctl not available
          #endif
        ],[
        use_input_events=yes
        ])
        AC_MSG_RESULT($use_input_events)
        if test x$use_input_events = xyes; then
            CFLAGS="$CFLAGS -DUSE_INPUT_EVENTS"
        fi
    fi
}

dnl See if we can use GNU pth library for threads
CheckPTH()
{
    dnl Check for pth support
    AC_ARG_ENABLE(pth,
[  --enable-pth            use GNU pth library for multi-threading [default=yes]],
                  , enable_pth=yes)
    if test x$enable_threads = xyes -a x$enable_pth = xyes; then
        AC_PATH_PROG(PTH_CONFIG, pth-config, no)
        if test "$PTH_CONFIG" = "no"; then
            use_pth=no
        else
            PTH_CFLAGS=`$PTH_CONFIG --cflags`
            PTH_LIBS=`$PTH_CONFIG --libs --all`
            SDL_CFLAGS="$SDL_CFLAGS $PTH_CFLAGS"
            SDL_LIBS="$SDL_LIBS $PTH_LIBS"
            CFLAGS="$CFLAGS -DENABLE_PTH"
            use_pth=yes
        fi
        AC_MSG_CHECKING(pth)
        if test "x$use_pth" = xyes; then
            AC_MSG_RESULT(yes)
        else
            AC_MSG_RESULT(no)
        fi
    fi
}

dnl See what type of thread model to use on Linux and Solaris
CheckPTHREAD()
{
    dnl Check for pthread support
    AC_ARG_ENABLE(pthreads,
[  --enable-pthreads       use POSIX threads for multi-threading [default=yes]],
                  , enable_pthreads=yes)
    dnl This is used on Linux for glibc binary compatibility (Doh!)
    AC_ARG_ENABLE(pthread-sem,
[  --enable-pthread-sem    use pthread semaphores [default=yes]],
                  , enable_pthread_sem=yes)
    case "$target" in
        *-*-bsdi*)
            pthread_cflags="-D_REENTRANT -D_THREAD_SAFE"
            pthread_lib=""
            ;;
        *-*-darwin*)
            pthread_cflags="-D_THREAD_SAFE"
# causes Carbon.p complaints?
#            pthread_cflags="-D_REENTRANT -D_THREAD_SAFE"
            ;;
        *-*-freebsd*)
            pthread_cflags="-D_REENTRANT -D_THREAD_SAFE"
            pthread_lib="-pthread"
            ;;
        *-*-netbsd*)
            pthread_cflags="-I/usr/pkg/include -D_REENTRANT"
            pthread_lib="-L/usr/pkg/lib -lpthread -lsem"
            ;;
        *-*-openbsd*)
            pthread_cflags="-D_REENTRANT"
            pthread_lib="-pthread"
            ;;
        *-*-solaris*)
            pthread_cflags="-D_REENTRANT"
            pthread_lib="-lpthread -lposix4"
            ;;
        *-*-sysv5*)
            pthread_cflags="-D_REENTRANT -Kthread"
            pthread_lib=""
            ;;
        *-*-irix*)
            pthread_cflags="-D_SGI_MP_SOURCE"
            pthread_lib="-lpthread"
            ;;
        *-*-aix*)
            pthread_cflags="-D_REENTRANT -mthreads"
            pthread_lib="-lpthread"
            ;;
        *-*-hpux11*)
            pthread_cflags="-D_REENTRANT"
            pthread_lib="-L/usr/lib -lpthread"
            ;;
        *-*-qnx*)
            pthread_cflags=""
            pthread_lib=""
            ;;
        *-*-osf*)
            if test x$ac_cv_prog_gcc = xyes; then
                pthread_cflags="-D_REENTRANT"
                pthread_lib="-lpthread -lrt"
            else
                pthread_cflags="-pthread"
                pthread_lib="-lpthread -lrt"
            fi
            ;;
        *)
            pthread_cflags="-D_REENTRANT"
            pthread_lib="-lpthread"
            ;;
    esac
    if test x$enable_threads = xyes -a x$enable_pthreads = xyes; then
        # Save the original compiler flags and libraries
        ac_save_cflags="$CFLAGS"; ac_save_libs="$LIBS"
        # Add the pthread compiler flags and libraries
        CFLAGS="$CFLAGS $pthread_cflags"; LIBS="$LIBS $pthread_lib"
        # Check to see if we have pthread support on this system
        AC_MSG_CHECKING(for pthreads)
        use_pthreads=no
        AC_TRY_LINK([
         #include <pthread.h>
        ],[
         pthread_attr_t type;
         pthread_attr_init(&type);
        ],[
        use_pthreads=yes
        ])
        AC_MSG_RESULT($use_pthreads)
        # Restore the compiler flags and libraries
        CFLAGS="$ac_save_cflags"; LIBS="$ac_save_libs"
        # Do futher testing if we have pthread support...
        if test x$use_pthreads = xyes; then
            CFLAGS="$CFLAGS $pthread_cflags -DSDL_USE_PTHREADS"
            LIBS="$LIBS $pthread_lib"
            SDL_CFLAGS="$SDL_CFLAGS $pthread_cflags"
            SDL_LIBS="$SDL_LIBS $pthread_lib"

            # Check to see if recursive mutexes are available
            AC_MSG_CHECKING(for recursive mutexes)
            has_recursive_mutexes=no
            AC_TRY_LINK([
              #include <pthread.h>
            ],[
              pthread_mutexattr_t attr;
              #if defined(linux) && !(defined(__arm__) && defined(QWS))
              pthread_mutexattr_setkind_np(&attr, PTHREAD_MUTEX_RECURSIVE_NP);
              #else
              pthread_mutexattr_settype(&attr, PTHREAD_MUTEX_RECURSIVE);
              #endif
            ],[
            has_recursive_mutexes=yes
            ])
            # Some systems have broken recursive mutex implementations
            case "$target" in
                *-*-darwin*)
                    has_recursive_mutexes=no
                    ;;
                *-*-solaris*)
                    has_recursive_mutexes=no
                    ;;
            esac
            AC_MSG_RESULT($has_recursive_mutexes)
            if test x$has_recursive_mutexes != xyes; then
                CFLAGS="$CFLAGS -DPTHREAD_NO_RECURSIVE_MUTEX"
            fi

            # Check to see if pthread semaphore support is missing
            if test x$enable_pthread_sem = xyes; then
                AC_MSG_CHECKING(for pthread semaphores)
                have_pthread_sem=no
                AC_TRY_COMPILE([
                  #include <pthread.h>
                  #include <semaphore.h>
                ],[
                ],[
                have_pthread_sem=yes
                ])
                AC_MSG_RESULT($have_pthread_sem)
            fi

            # Check to see if this is broken glibc 2.0 pthreads
            case "$target" in
                *-*-linux*)
                    AC_MSG_CHECKING(for broken glibc 2.0 pthreads)
                    glibc20_pthreads=no
                    AC_TRY_COMPILE([
                      #include <features.h>
                      #if (__GLIBC__ == 2) && (__GLIBC_MINOR__ == 0)
                      #warning Working around a bug in glibc 2.0 pthreads
                      #else
                      #error pthread implementation okay
                      #endif /* glibc 2.0 */
                    ],[
                    ],[
                    glibc20_pthreads=yes
                    ])
                    AC_MSG_RESULT($glibc20_pthreads)
            esac
        fi
    fi

    AC_MSG_CHECKING(whether semun is defined in /usr/include/sys/sem.h)
    have_semun=no
    AC_TRY_COMPILE([
      #include <sys/types.h>
      #include <sys/sem.h>
    ],[
      union semun t;
    ],[
    have_semun=yes
    ])
    AC_MSG_RESULT($have_semun)
    if test x$have_semun = xyes; then
        CFLAGS="$CFLAGS -DHAVE_SEMUN"
    fi

    # See if we can use GNU Pth or clone() on Linux directly
    if test x$enable_threads = xyes -a x$use_pthreads != xyes; then
        CheckPTH
        if test x$use_pth != xyes; then
            case "$target" in
                *-*-linux*)
                    use_clone=yes
                    ;;
            esac
        fi
    fi
}

# Note that we need to have either semaphores or to have mutexes and
# condition variables to implement all thread synchronization primitives

dnl See if we can use sigaction() instead of signal()
CheckSIGACTION()
{
    dnl Check for sigaction support
    AC_ARG_ENABLE(sigaction,
[  --enable-sigaction      use sigaction instead of signal [default=yes]],
                  , enable_sigaction=yes)
    if test x$enable_sigaction = xyes; then
        AC_MSG_CHECKING(sigaction)
        have_sigaction=no
        AC_TRY_COMPILE([
         #include <signal.h>
        ],[
         struct sigaction junk;
         sigaction(0, &junk, &junk);
        ],[
        have_sigaction=yes
        ])
        AC_MSG_RESULT($have_sigaction)
        if test x$have_sigaction = xyes; then
            CFLAGS="$CFLAGS -DHAVE_SIGACTION"
        fi
    fi
}

dnl Check for the dlfcn.h interface for dynamically loading objects
CheckDLOPEN()
{
    AC_ARG_ENABLE(sdl-dlopen,
[  --enable-sdl-dlopen     use dlopen for shared object loading [default=yes]],
                  , enable_sdl_dlopen=yes)
    if test x$enable_sdl_dlopen = xyes; then
        AC_MSG_CHECKING(for dlopen)
        use_dlopen=no
        AC_TRY_COMPILE([
         #include <dlfcn.h>
        ],[
        ],[
        use_dlopen=yes
        ])
        AC_MSG_RESULT($use_dlopen)

        if test x$use_dlopen = xyes; then
            CFLAGS="$CFLAGS -DUSE_DLOPEN"
            AC_CHECK_LIB(c, dlopen, SYSTEM_LIBS="$SYSTEM_LIBS",
               AC_CHECK_LIB(dl, dlopen, SYSTEM_LIBS="$SYSTEM_LIBS -ldl",
                  AC_CHECK_LIB(ltdl, dlopen, SYSTEM_LIBS="$SYSTEM_LIBS -lltdl")))
        fi
    fi
}

dnl Set up the Atari LDG (shared object loader)
CheckAtariLdg()
{
    AC_ARG_ENABLE(atari-ldg,
[  --enable-atari-ldg      use Atari LDG for shared object loading [default=yes]],
                  , enable_atari_ldg=yes)
    if test x$video_gem = xyes -a x$enable_atari_ldg = xyes; then
        AC_CHECK_HEADER(ldg.h, have_ldg_hdr=yes)
        AC_CHECK_LIB(ldg, ldg_open, have_ldg_lib=yes, have_ldg_lib=no, -lgem)
        if test x$have_ldg_hdr = xyes -a x$have_ldg_lib = xyes; then
            CFLAGS="$CFLAGS -DENABLE_LDG"
            SYSTEM_LIBS="$SYSTEM_LIBS -lldg -lgem"
        fi
    fi
}


dnl Check for altivec instruction support using gas syntax
CheckAltivec()
{
    AC_MSG_CHECKING(for GCC Altivec instruction support)
    have_gcc_altivec=no
    AC_TRY_COMPILE([
    ],[
        asm volatile ("mtspr 256, %0\n\t"
                      "vand %%v0, %%v0, %%v0"
                      :
                      : "r" (-1));
    ],[
    have_gcc_altivec=yes
    ])
    if test x$have_gcc_altivec = xyes; then
        CFLAGS="$CFLAGS -DGCC_ALTIVEC"
    fi
    AC_MSG_RESULT($have_gcc_altivec)
}

case "$target" in
    *-*-linux*|*-*-gnu*|*-*-k*bsd*-gnu)
        case "$target" in
          *-*-linux*) ARCH=linux ;;
          *-*-kfreebsd*-gnu) ARCH=kfreebsd-gnu ;;
          *-*-knetbsd*-gnu) ARCH=knetbsd-gnu ;;
          *-*-kopenbsd*-gnu) ARCH=kopenbsd-gnu ;;
          *-*-gnu*) ARCH=gnu ;; # must be last
        esac
        
        CheckDiskAudio
        CheckDLOPEN
        
        CheckOSS
        CheckALSA
        CheckARTSC
        CheckESD
        CheckNAS
        
        
        
        
        
        






        CheckInputEvents
        CheckPTHREAD
        CheckSIGACTION
        CheckAltivec
        # Set up files for the main() stub
        # Set up files for the audio library
        # We use the OSS and ALSA API's, not the Sun audio API
        #if test x$enable_audio = xyes; then
        #    CFLAGS="$CFLAGS -DSUNAUDIO_SUPPORT"
        #    AUDIO_SUBDIRS="$AUDIO_SUBDIRS sun"
        #    AUDIO_DRIVERS="$AUDIO_DRIVERS sun/libaudio_sun.la"
        #fi
        # Set up files for the joystick library
        # Set up files for the cdrom library
        # Set up files for the thread library
        # Set up files for the timer library
        ;;
    *-*-bsdi*)
        ARCH=bsdi
        
        CheckDiskAudio
        CheckDLOPEN
        
        CheckOSS
        CheckARTSC
        CheckESD
        CheckNAS
        
        



        CheckPTHREAD
        CheckSIGACTION
        # Set up files for the audio library
        # We use the OSS and ALSA API's, not the Sun audio API
        #if test x$enable_audio = xyes; then
        #    CFLAGS="$CFLAGS -DSUNAUDIO_SUPPORT"
        #    AUDIO_SUBDIRS="$AUDIO_SUBDIRS sun"
        #    AUDIO_DRIVERS="$AUDIO_DRIVERS sun/libaudio_sun.la"
        #fi
        # Set up files for the joystick library
        # (No joystick support yet)
        # Set up files for the cdrom library
        # Set up files for the thread library
        # Set up files for the timer library
        ;;
    *-*-freebsd*)
        ARCH=freebsd
        
        CheckDiskAudio
        CheckDLOPEN
        CheckVGL
        
        CheckOSS
        CheckARTSC
        CheckESD
        CheckNAS
        




        
        CheckPTHREAD
        CheckSIGACTION
        # Set up files for the audio library
        # We use the OSS and ALSA API's, not the Sun audio API
        #if test x$enable_audio = xyes; then
        #    CFLAGS="$CFLAGS -DSUNAUDIO_SUPPORT"
        #    AUDIO_SUBDIRS="$AUDIO_SUBDIRS sun"
        #    AUDIO_DRIVERS="$AUDIO_DRIVERS sun/libaudio_sun.la"
        #fi
        # Set up files for the cdrom library
        # Set up files for the thread library
        # Set up files for the timer library
        ;;
    *-*-netbsd*)
        ARCH=netbsd
        
        CheckDiskAudio
        CheckDLOPEN
        
        CheckOSS
        CheckARTSC
        CheckESD
        CheckNAS
        


        CheckPTHREAD
        CheckSIGACTION

        # Set up files for the audio library