configure.in

fi

dnl ----------------------------- Checking for fdatasync: OS X doesn't have it
AC_CHECK_FUNCS(fdatasync)

dnl ----------------------------- Checking for extended file descriptor handling
# test for epoll_create1
AC_CACHE_CHECK([for epoll_create1 support], [apr_cv_epoll_create1],
[AC_TRY_RUN([
#include <sys/epoll.h>
#include <unistd.h>

int main()
{
    return epoll_create1(0) == -1;
}], [apr_cv_epoll_create1=yes], [apr_cv_epoll_create1=no], [apr_cv_epoll_create1=no])])

if test "$apr_cv_epoll_create1" = "yes"; then
   AC_DEFINE([HAVE_EPOLL_CREATE1], 1, [Define if epoll_create1 function is supported])
fi

# Check for z/OS async i/o support.  
AC_CACHE_CHECK([for asio -> message queue support], [apr_cv_aio_msgq],
[AC_TRY_RUN([
#define _AIO_OS390
#include <aio.h>

int main()
{
    struct aiocb a;

    a.aio_notifytype = AIO_MSGQ;  /* use IPC message queue for notification */

    return aio_cancel(2, NULL) == -1;
}], [apr_cv_aio_msgq=yes], [apr_cv_aio_msgq=no], [apr_cv_aio_msgq=no])])

if test "$apr_cv_aio_msgq" = "yes"; then
   AC_DEFINE([HAVE_AIO_MSGQ], 1, [Define if async i/o supports message q's])
fi

# test for dup3
AC_CACHE_CHECK([for dup3 support], [apr_cv_dup3],
[AC_TRY_RUN([
#include <unistd.h>

int main()
{
    return dup3(STDOUT_FILENO, STDERR_FILENO, 0) == -1;
}], [apr_cv_dup3=yes], [apr_cv_dup3=no], [apr_cv_dup3=no])])

if test "$apr_cv_dup3" = "yes"; then
   AC_DEFINE([HAVE_DUP3], 1, [Define if dup3 function is supported])
fi

# test for accept4
AC_CACHE_CHECK([for accept4 support], [apr_cv_accept4],
[AC_TRY_RUN([
#include <unistd.h>
#include <sys/types.h>
#include <sys/socket.h>
#include <sys/un.h>
#include <sys/wait.h>
#include <signal.h>
#include <errno.h>

#define A4_SOCK "./apr_accept4_test_socket"

int main()
{
    pid_t pid;
    int fd;
    struct sockaddr_un loc, rem;
    socklen_t rem_sz;

    if ((pid = fork())) {
        int status;

        unlink(A4_SOCK);

        if ((fd = socket(AF_UNIX, SOCK_STREAM, 0)) == -1)
            goto cleanup_failure2;

        loc.sun_family = AF_UNIX;
        strncpy(loc.sun_path, A4_SOCK, sizeof(loc.sun_path) - 1);

        if (bind(fd, (struct sockaddr *) &loc,
                 sizeof(struct sockaddr_un)) == -1)
            goto cleanup_failure;

        if (listen(fd, 5) == -1)
            goto cleanup_failure;

        rem_sz = sizeof(struct sockaddr_un);
        if (accept4(fd, (struct sockaddr *) &rem, &rem_sz, 0) == -1) {
            goto cleanup_failure;
        }
        else {
            close(fd);
            waitpid(pid, &status, 0);
            unlink(A4_SOCK);
            return 0;
        }

cleanup_failure:
        close(fd);
cleanup_failure2:
        kill(pid, SIGKILL);
        waitpid(pid, &status, 0);
        unlink(A4_SOCK);
        return 1;
    }
    else {
        if ((fd = socket(AF_UNIX, SOCK_STREAM, 0)) == -1)
            return 1; /* this will be bad: we'll hang */

        loc.sun_family = AF_UNIX;
        strncpy(loc.sun_path, A4_SOCK, sizeof(loc.sun_path) - 1);

        while(connect(fd, (struct sockaddr *) &loc,
                      sizeof(struct sockaddr_un)) == -1 &&
              (errno==ENOENT || errno==ECONNREFUSED))
            ;

        close(fd);
        return 0;
    }
}], [apr_cv_accept4=yes], [apr_cv_accept4=no], [apr_cv_accept4=no])])

if test "$apr_cv_accept4" = "yes"; then
   AC_DEFINE([HAVE_ACCEPT4], 1, [Define if accept4 function is supported])
fi

AC_CACHE_CHECK([for SOCK_CLOEXEC support], [apr_cv_sock_cloexec],
[AC_TRY_RUN([
#include <sys/types.h>
#include <sys/socket.h>

int main()
{
    return socket(AF_INET, SOCK_STREAM|SOCK_CLOEXEC, 0) == -1;
}], [apr_cv_sock_cloexec=yes], [apr_cv_sock_cloexec=no], [apr_cv_sock_cloexec=no])])

if test "$apr_cv_sock_cloexec" = "yes"; then
   AC_DEFINE([HAVE_SOCK_CLOEXEC], 1, [Define if the SOCK_CLOEXEC flag is supported])
fi

dnl ----------------------------- Checking for missing POSIX thread functions
AC_CHECK_FUNCS([getpwnam_r getpwuid_r getgrnam_r getgrgid_r])

dnl ----------------------------- Checking for Shared Memory Support 
echo "${nl}Checking for Shared Memory Support..."

# The real-time POSIX extensions (e.g. shm_*, sem_*) may only
# be available if linking against librt.
AC_SEARCH_LIBS(shm_open, rt)

case $host in
 *-sysv*)
   ac_includes_default="$ac_includes_default
#if HAVE_SYS_MUTEX_H /* needed to define lock_t for sys/shm.h */
# include <sys/mutex.h>
#endif";;
esac

AC_CHECK_HEADERS([sys/types.h sys/mman.h sys/ipc.h sys/mutex.h sys/shm.h sys/file.h kernel/OS.h os2.h windows.h])
AC_CHECK_FUNCS([mmap munmap shm_open shm_unlink shmget shmat shmdt shmctl \
                create_area mprotect])

APR_CHECK_DEFINE(MAP_ANON, sys/mman.h)
AC_CHECK_FILE(/dev/zero)

# Not all systems can mmap /dev/zero (such as HP-UX).  Check for that.
if test "$ac_cv_func_mmap" = "yes" &&
   test "$ac_cv_file__dev_zero" = "yes"; then
    AC_MSG_CHECKING(for mmap that can map /dev/zero)
    AC_TRY_RUN([
#include <sys/types.h>
#include <sys/stat.h>
#include <fcntl.h>
#ifdef HAVE_SYS_MMAN_H
#include <sys/mman.h>
#endif
    int main()
    {
        int fd;
        void *m;
        fd = open("/dev/zero", O_RDWR);
        if (fd < 0) {
            return 1;
        }
        m = mmap(0, sizeof(void*), PROT_READ|PROT_WRITE, MAP_SHARED, fd, 0);
        if (m == (void *)-1) {  /* aka MAP_FAILED */
            return 2;
        }
        if (munmap(m, sizeof(void*)) < 0) {
            return 3;
        }
        return 0;
    }], [], [ac_cv_file__dev_zero=no], [ac_cv_file__dev_zero=no])

    AC_MSG_RESULT($ac_cv_file__dev_zero)
fi

# Now we determine which one is our anonymous shmem preference.
haveshmgetanon="0"
havemmapzero="0"
havemmapanon="0"
APR_BEGIN_DECISION([anonymous shared memory allocation method])
APR_IFALLYES(header:sys/ipc.h header:sys/shm.h header:sys/file.h dnl
             func:shmget func:shmat func:shmdt func:shmctl,
             [haveshmgetanon="1"
              APR_DECIDE(USE_SHMEM_SHMGET_ANON, [SysV IPC shmget()])])
APR_IFALLYES(header:sys/mman.h func:mmap func:munmap file:/dev/zero,
             [havemmapzero="1"
              APR_DECIDE(USE_SHMEM_MMAP_ZERO, 
                  [SVR4-style mmap() on /dev/zero])])
APR_IFALLYES(header:sys/mman.h func:mmap func:munmap define:MAP_ANON,
             [havemmapanon="1"
              APR_DECIDE(USE_SHMEM_MMAP_ANON, 
                  [4.4BSD-style mmap() via MAP_ANON])])
APR_IFALLYES(header:os2.h,
             [haveos2shm="1"
              APR_DECIDE(USE_SHMEM_OS2_ANON, [OS/2 DosAllocSharedMem()])])
APR_IFALLYES(header:kernel/OS.h func:create_area,
             [havebeosshm="1"
              APR_DECIDE(USE_SHMEM_BEOS_ANON,
                         [BeOS areas])])
APR_IFALLYES(header:windows.h func:CreateFileMapping,
             [havewin32shm="1"
              APR_DECIDE(USE_SHMEM_WIN32_ANON,
                         [Windows CreateFileMapping()])])
case $host in
    *linux* ) 
        # Linux has problems with MM_SHMT_MMANON even though it reports
        # that it has it.
        # FIXME - find exact 2.3 version that MMANON was fixed in.  It is
        # confirmed fixed in 2.4 series.
        if test $os_pre24linux -eq 1; then
            AC_MSG_WARN([Disabling anon mmap() support for Linux pre-2.4])
            APR_DECISION_OVERRIDE(USE_SHMEM_MMAP_ZERO USE_SHMEM_SHMGET_ANON)
        fi
        ;;
    *hpux11* ) 
        APR_DECISION_OVERRIDE(USE_SHMEM_SHMGET_ANON)
        ;;
esac
APR_END_DECISION
AC_DEFINE_UNQUOTED($ac_decision)

useshmgetanon="0"
usemmapzero="0"
usemmapanon="0"

case $ac_decision in
    USE_SHMEM_SHMGET_ANON )
        useshmgetanon="1"
        ;;
    USE_SHMEM_MMAP_ZERO )
        usemmapzero="1"
        ;;
    USE_SHMEM_MMAP_ANON )
        usemmapanon="1"
        ;;
esac

AC_SUBST(useshmgetanon)
AC_SUBST(usemmapzero)
AC_SUBST(usemmapanon)
AC_SUBST(haveshmgetanon)
AC_SUBST(havemmapzero)
AC_SUBST(havemmapanon)

# Now we determine which one is our name-based shmem preference.
havemmaptmp="0"
havemmapshm="0"
haveshmget="0"
havebeosarea="0"
haveos2shm="0"
havewin32shm="0"
APR_BEGIN_DECISION([namebased memory allocation method])
APR_IFALLYES(header:sys/mman.h func:mmap func:munmap,
             [havemmaptmp="1"
              APR_DECIDE(USE_SHMEM_MMAP_TMP, 
                  [Classical mmap() on temporary file])])
APR_IFALLYES(header:sys/mman.h func:mmap func:munmap func:shm_open dnl
             func:shm_unlink,
             [havemmapshm="1"
              APR_DECIDE(USE_SHMEM_MMAP_SHM, 
                  [mmap() via POSIX.1 shm_open() on temporary file])])
APR_IFALLYES(header:sys/ipc.h header:sys/shm.h header:sys/file.h dnl
             func:shmget func:shmat func:shmdt func:shmctl,
             [haveshmget="1"
              APR_DECIDE(USE_SHMEM_SHMGET, [SysV IPC shmget()])])
APR_IFALLYES(header:kernel/OS.h func:create_area,
             [havebeosshm="1"
              APR_DECIDE(USE_SHMEM_BEOS, [BeOS areas])])
APR_IFALLYES(header:os2.h,
             [haveos2shm="1"
              APR_DECIDE(USE_SHMEM_OS2, [OS/2 DosAllocSharedMem()])])
APR_IFALLYES(header:windows.h,
             [havewin32shm="1"
              APR_DECIDE(USE_SHMEM_WIN32, [Windows shared memory])])
AC_ARG_ENABLE(posix-shm,
[  --enable-posix-shm      Use POSIX shared memory (shm_open) if available],
[
if test "$havemmapshm" = "1"; then
  APR_DECISION_OVERRIDE(USE_SHMEM_MMAP_SHM)
fi
])
case $host in
    *linux* ) 
        # Linux pre-2.4 had problems with MM_SHMT_MMANON even though
        # it reports that it has it.
        if test $os_pre24linux -eq 1; then
            APR_DECISION_OVERRIDE(USE_SHMEM_MMAP_TMP USE_SHMEM_MMAP_SHM dnl
                                  USE_SHMEM_SHMGET)
        fi
        ;;
esac
APR_END_DECISION
AC_DEFINE_UNQUOTED($ac_decision)

usemmaptmp="0"
usemmapshm="0"
useshmget="0"
usebeosarea="0"
useos2shm="0"
usewin32shm="0"

case $ac_decision in
    USE_SHMEM_MMAP_TMP )
        usemmaptmp="1"
        ;;
    USE_SHMEM_MMAP_SHM )
        usemmapshm="1"
        ;;
    USE_SHMEM_SHMGET )
        useshmget="1"
        ;;
    USE_SHMEM_BEOS )
        usebeosarea="1"
        ;;
    USE_SHMEM_OS2 )
        useos2shm="1"
        ;;
    USE_SHMEM_WIN32 )
        usewin32shm="1"
        ;;
esac

# Do we have any shared memory support?
if test "$usemmaptmp$usemmapshm$usemmapzero$useshmget$usemmapanon$usebeosarea$useos2shm$usewin32shm" = "00000000"; then
  sharedmem="0"
else
  sharedmem="1"
fi

AC_SUBST(usemmaptmp)
AC_SUBST(usemmapshm)
AC_SUBST(useshmget)
AC_SUBST(usebeosarea)
AC_SUBST(useos2shm)
AC_SUBST(usewin32shm)
AC_SUBST(havemmaptmp)
AC_SUBST(havemmapshm)
AC_SUBST(haveshmget)
AC_SUBST(havebeosarea)
AC_SUBST(haveos2shm)
AC_SUBST(havewin32shm)
AC_SUBST(sharedmem)

dnl ----------------------------- Checks for Any required Functions
dnl Checks for library functions. (N.B. poll is further down)

AC_FUNC_ALLOCA

AC_CHECK_FUNCS([calloc setsid isinf isnan \
                getenv putenv setenv unsetenv \
                writev getifaddrs utime utimes])
AC_CHECK_FUNCS(setrlimit, [ have_setrlimit="1" ], [ have_setrlimit="0" ]) 
AC_CHECK_FUNCS(getrlimit, [ have_getrlimit="1" ], [ have_getrlimit="0" ]) 
sendfile="0"
AC_CHECK_LIB(sendfile, sendfilev)
AC_CHECK_FUNCS(sendfile send_file sendfilev, [ sendfile="1" ])

dnl THIS MUST COME AFTER THE THREAD TESTS - FreeBSD doesn't always have a
dnl threaded poll() and we don't want to use sendfile on early FreeBSD 
dnl systems if we are also using threads.

AC_ARG_WITH(sendfile, [  --with-sendfile         Override decision to use sendfile],
  [ if test "$withval" = "yes"; then
        sendfile="1"
    else
        sendfile="0"
    fi ], [
    orig_sendfile=$sendfile
    case $host in
        *freebsd*)
            # FreeBSD < 4.2 has issues with threads+sendfile
            if test $os_version -le "401999"; then
                if test "$threads" = "1"; then
                    sendfile="0"
                fi
            fi
            ;;
        *alpha*-dec-osf* )
            sendfile="0"
            ;;
        s390-*-linux-gnu)
            # disable sendfile support for 2.2 on S/390
            if test $os_pre24linux -eq 1; then
                AC_MSG_WARN([Disabled sendfile support for Linux 2.2 on S/390])
                sendfile="0"
            fi
            ;;
        *aix*)
            # compiler-independent check for 64-bit build
            AC_CHECK_SIZEOF(void*, 4)
            if test "x$ac_cv_sizeof_voidp" = "x8"; then
                # sendfile not working for 64-bit build
                sendfile="0"
            fi
            ;;
    esac       
    if test "$orig_sendfile" != "$sendfile"; then
      echo "sendfile support disabled to avoid system problem"
    fi ] )
AC_SUBST(sendfile)

AC_CHECK_FUNCS(sigaction, [ have_sigaction="1" ], [ have_sigaction="0" ]) 
AC_DECL_SYS_SIGLIST

AC_CHECK_FUNCS(fork, [ fork="1" ], [ fork="0" ])
APR_CHECK_INET_ADDR
APR_CHECK_INET_NETWORK
AC_SUBST(apr_inaddr_none)
AC_CHECK_FUNC(_getch)
AC_CHECK_FUNCS(strerror_r, [ strerror_r="1" ], [ strerror_r="0" ])
if test "$strerror_r" = "1"; then
  APR_CHECK_STRERROR_R_RC
fi
AC_CHECK_FUNCS(mmap, [ mmap="1" ], [ mmap="0" ])
if test "$native_mmap_emul" = "1"; then
    mmap="1"
fi
AC_CHECK_FUNCS(memmove, [ have_memmove="1" ], [have_memmove="0" ])
AC_CHECK_FUNCS([getpass getpassphrase gmtime_r localtime_r])
case $host in
    *-hp-hpux*)
        dnl mkstemp is limited to 26 temporary files (a-z); use APR replacement
        ;;
    *)
        AC_CHECK_FUNCS(mkstemp)
        ;;
esac

AC_SUBST(fork)
AC_SUBST(have_inet_addr)
AC_SUBST(tcp_nodelay_inherited)
AC_SUBST(o_nonblock_inherited)
AC_SUBST(have_inet_network)
AC_SUBST(have_sigaction)
AC_SUBST(have_setrlimit)
AC_SUBST(have_getrlimit)
AC_SUBST(mmap)
AC_SUBST(have_memmove)

APR_CHECK_SIGWAIT_ONE_ARG

dnl ----------------------------- Checks for Any required Headers
AC_HEADER_STDC

APR_FLAG_HEADERS(
    ByteOrder.h		\
    conio.h		\
    crypt.h		\
    ctype.h		\
    dir.h		\
    dirent.h		\
    dl.h		\
    dlfcn.h		\
    errno.h		\
    fcntl.h		\
    grp.h		\
    io.h		\
    limits.h		\
    mach-o/dyld.h	\
    malloc.h		\
    memory.h		\
    netdb.h		\
    osreldate.h		\
    poll.h		\
    process.h		\
    pwd.h		\
    semaphore.h		\
    signal.h		\
    stdarg.h		\
    stddef.h		\
    stdio.h		\
    stdlib.h		\
    string.h		\
    strings.h		\
    sysapi.h		\
    sysgtime.h		\
    termios.h		\
    time.h		\
    tpfeq.h		\
    tpfio.h		\
    unistd.h		\
    unix.h		\
    windows.h		\
    winsock2.h		\
    arpa/inet.h		\
    kernel/OS.h		\
    net/errno.h		\
    netinet/in.h	\
    netinet/sctp.h      \
    netinet/sctp_uio.h  \
    sys/file.h		\
    sys/ioctl.h         \
    sys/mman.h		\
    sys/param.h         \
    sys/poll.h		\
    sys/resource.h	\
    sys/select.h	\
    sys/sem.h		\
    sys/sendfile.h	\
    sys/signal.h	\
    sys/socket.h	\
    sys/sockio.h	\
    sys/stat.h          \
    sys/sysctl.h	\
    sys/syslimits.h	\
    sys/time.h		\
    sys/types.h		\
    sys/uio.h		\
    sys/un.h		\
    sys/wait.h)

# IRIX 6.5 has a problem in <netinet/tcp.h> which prevents it from
# being included by itself.  Check for <netinet/tcp.h> manually,
# including another header file first.
AC_CACHE_CHECK([for netinet/tcp.h], [apr_cv_hdr_netinet_tcp_h],
[AC_TRY_CPP(
[#ifdef HAVE_NETINET_IN_H
#include <netinet/in.h>
#endif
#include <netinet/tcp.h>
], [apr_cv_hdr_netinet_tcp_h=yes], [apr_cv_hdr_netinet_tcp_h=no])])
if test "$apr_cv_hdr_netinet_tcp_h" = "yes"; then
   netinet_tcph=1
   AC_DEFINE([HAVE_NETINET_TCP_H], 1, [Defined if netinet/tcp.h is present])
else
   netinet_tcph=0
fi

AC_SUBST(arpa_ineth)
AC_SUBST(conioh)
AC_SUBST(ctypeh)
AC_SUBST(crypth)
AC_SUBST(errnoh)
AC_SUBST(direnth)
AC_SUBST(fcntlh)
AC_SUBST(ioh)
AC_SUBST(limitsh)
AC_SUBST(netdbh)
AC_SUBST(sys_syslimitsh)
AC_SUBST(netinet_inh)
AC_SUBST(netinet_sctph)
AC_SUBST(netinet_sctp_uioh)
AC_SUBST(netinet_tcph)
AC_SUBST(stdargh)
AC_SUBST(stdioh)
AC_SUBST(stdlibh)
AC_SUBST(stringh)
AC_SUBST(stringsh)
AC_SUBST(sys_ioctlh)
AC_SUBST(sys_sendfileh)
AC_SUBST(sys_signalh)
AC_SUBST(sys_socketh)
AC_SUBST(sys_sockioh)
AC_SUBST(sys_typesh)
AC_SUBST(sys_timeh)
AC_SUBST(sys_uioh)
AC_SUBST(sys_unh)
AC_SUBST(timeh)
AC_SUBST(unistdh)
AC_SUBST(signalh)
AC_SUBST(sys_waith)
AC_SUBST(processh)
AC_SUBST(pthreadh)
AC_SUBST(semaphoreh)
AC_SUBST(windowsh)
AC_SUBST(winsock2h)

# Checking for h_errno in <netdb.h>
if test "$netdbh" = "1"; then
  APR_CHECK_H_ERRNO_FLAG
  if test "$ac_cv_h_errno_cflags" = "no"; then
    AC_MSG_ERROR([can not find h_errno in netdb.h])
  fi
fi

AC_ARG_ENABLE(allocator-uses-mmap,
  [  --enable-allocator-uses-mmap    Use mmap in apr_allocator instead of malloc ],
  [ if test "$enableval" = "yes"; then
        APR_IFALLYES(header:sys/mman.h func:mmap func:munmap define:MAP_ANON,
                     [AC_DEFINE(APR_ALLOCATOR_USES_MMAP, 1,
                                [Define if apr_allocator should use mmap]) ],
		     [AC_MSG_ERROR([mmap()/MAP_ANON not supported]) ]
		    )
    fi ]
)

AC_ARG_ENABLE(allocator-guard-pages,
  [  --enable-allocator-guard-pages  Use guard pages in apr_allocator
                                  (implies --enable-allocator-uses-mmap) ] ,
  [ if test "$enableval" = "yes"; then
        APR_IFALLYES(header:sys/mman.h func:mmap func:munmap func:mprotect define:MAP_ANON,
                     [AC_DEFINE(APR_ALLOCATOR_GUARD_PAGES, 1,
                                [Define if apr_allocator should use guard pages]) ],
                     [AC_MSG_ERROR([mmap()/MAP_ANON/mprotect() not supported]) ]
                   )
    fi ]
)


AC_ARG_ENABLE(pool-concurrency-check,
  [  --enable-pool-concurrency-check Check for concurrent usage of memory pools],
  [ if test "$enableval" = "yes"; then
    AC_DEFINE(APR_POOL_CONCURRENCY_CHECK, 1,
               [Define if pool functions should abort if concurrent usage is detected])
    fi ]
)

dnl ----------------------------- Checks for standard typedefs
AC_TYPE_OFF_T
AC_TYPE_PID_T
AC_TYPE_SIZE_T
AC_TYPE_UID_T
AC_CHECK_TYPE(ssize_t, int)
AC_C_INLINE
AC_C_CONST
AC_FUNC_SETPGRP

APR_CHECK_SOCKLEN_T

dnl Checks for pointer size
AC_CHECK_SIZEOF(void*, 4)

if test "x$ac_cv_sizeof_voidp" != "x"; then
    voidp_size=$ac_cv_sizeof_voidp
else
    AC_ERROR([Cannot determine size of void*])
fi

dnl Checks for integer size
AC_CHECK_SIZEOF(char, 1)
AC_CHECK_SIZEOF(int, 4)
AC_CHECK_SIZEOF(long, 4)
AC_CHECK_SIZEOF(short, 2)
AC_CHECK_SIZEOF(long long, 8)

if test "$ac_cv_sizeof_short" = "2"; then
    short_value=short
fi
if test "$ac_cv_sizeof_int" = "4"; then
    int_value=int
fi
# Now we need to find what apr_int64_t (sizeof == 8) will be.
# The first match is our preference.
if test "$ac_cv_sizeof_int" = "8"; then
    int64_literal='#define APR_INT64_C(val) (val)'
    uint64_literal='#define APR_UINT64_C(val) (val##U)'
    int64_t_fmt='#define APR_INT64_T_FMT "d"'
    uint64_t_fmt='#define APR_UINT64_T_FMT "u"'
    uint64_t_hex_fmt='#define APR_UINT64_T_HEX_FMT "x"'
    int64_value="int"
    long_value=int
    int64_strfn="strtoi"
elif test "$ac_cv_sizeof_long" = "8"; then
    int64_literal='#define APR_INT64_C(val) (val##L)'
    uint64_literal='#define APR_UINT64_C(val) (val##UL)'
    int64_t_fmt='#define APR_INT64_T_FMT "ld"'
    uint64_t_fmt='#define APR_UINT64_T_FMT "lu"'
    uint64_t_hex_fmt='#define APR_UINT64_T_HEX_FMT "lx"'
    int64_value="long"
    long_value=long
    int64_strfn="strtol"
elif test "$ac_cv_sizeof_long_long" = "8"; then
    int64_literal='#define APR_INT64_C(val) (val##LL)'
    uint64_literal='#define APR_UINT64_C(val) (val##ULL)'
    # Linux, Solaris, FreeBSD all support ll with printf.
    # BSD 4.4 originated 'q'.  Solaris is more popular and 
    # doesn't support 'q'.  Solaris wins.  Exceptions can
    # go to the OS-dependent section.
    int64_t_fmt='#define APR_INT64_T_FMT "lld"'
    uint64_t_fmt='#define APR_UINT64_T_FMT "llu"'
    uint64_t_hex_fmt='#define APR_UINT64_T_HEX_FMT "llx"'
    int64_value="long long"
    long_value="long long"
    int64_strfn="strtoll"
elif test "$ac_cv_sizeof_longlong" = "8"; then
    int64_literal='#define APR_INT64_C(val) (val##LL)'
    uint64_literal='#define APR_UINT64_C(val) (val##ULL)'
    int64_t_fmt='#define APR_INT64_T_FMT "qd"'
    uint64_t_fmt='#define APR_UINT64_T_FMT "qu"'
    uint64_t_hex_fmt='#define APR_UINT64_T_HEX_FMT "qx"'
    int64_value="__int64"
    long_value="__int64"
    int64_strfn="strtoll"
else
    # int64_literal may be overriden if your compiler thinks you have
    # a 64-bit value but APR does not agree.
    AC_ERROR([could not detect a 64-bit integer type])
fi

# If present, allow the C99 macro INT64_C to override our conversion.
#
# HP-UX's ANSI C compiler provides this without any includes, so we
# will first look for INT64_C without adding stdint.h
AC_CACHE_CHECK([for INT64_C], [apr_cv_define_INT64_C], [
AC_EGREP_CPP(YES_IS_DEFINED,
[#ifdef INT64_C
YES_IS_DEFINED
#endif], [apr_cv_define_INT64_C=yes], [
    # Now check for INT64_C in stdint.h
    AC_EGREP_CPP(YES_IS_DEFINED, [#include <stdint.h>
#ifdef INT64_C
YES_IS_DEFINED
#endif], [apr_cv_define_INT64_C=yes], [apr_cv_define_INT64_C=no])])])

if test "$apr_cv_define_INT64_C" = "yes"; then
    int64_literal='#define APR_INT64_C(val) INT64_C(val)'
    uint64_literal='#define APR_UINT64_C(val) UINT64_C(val)'
    stdint=1
else
    stdint=0
fi

if test "$ac_cv_type_size_t" = "yes"; then
    size_t_value="size_t"
else
    size_t_value="apr_int32_t"
fi
if test "$ac_cv_type_ssize_t" = "yes"; then
    ssize_t_value="ssize_t"
else
    ssize_t_value="apr_int32_t"
fi
if test "$ac_cv_socklen_t" = "yes"; then
    socklen_t_value="socklen_t"
    case $host in
        *-hp-hpux*)
            if test "$ac_cv_sizeof_long" = "8"; then
                # 64-bit HP-UX requires 32-bit socklens in
                # kernel, but user-space declarations say
                # 64-bit (socklen_t == size_t == long).
                # This will result in many compile warnings,
                # but we're functionally busted otherwise.
                socklen_t_value="int"
            fi
            ;;
    esac
else
    socklen_t_value="int"
fi

APR_CHECK_SIZEOF_EXTENDED([#include <sys/types.h>], pid_t, 8)

if test "$ac_cv_sizeof_pid_t" = "$ac_cv_sizeof_short"; then
    pid_t_fmt='#define APR_PID_T_FMT "hd"'
elif test "$ac_cv_sizeof_pid_t" = "$ac_cv_sizeof_int"; then
    pid_t_fmt='#define APR_PID_T_FMT "d"'
elif test "$ac_cv_sizeof_pid_t" = "$ac_cv_sizeof_long"; then
    pid_t_fmt='#define APR_PID_T_FMT "ld"'
elif test "$ac_cv_sizeof_pid_t" = "$ac_cv_sizeof_long_long"; then
    pid_t_fmt='#define APR_PID_T_FMT APR_INT64_T_FMT'
else
    pid_t_fmt='#error Can not determine the proper size for pid_t'
fi

# Basically, we have tried to figure out the correct format strings
# for APR types which vary between platforms, but we don't always get
# it right.
case $host in
   s390*linux*)
       # uniquely, the 31-bit Linux/s390 uses "unsigned long int"
       # for size_t rather than "unsigned int":
       size_t_fmt="lu"
       ssize_t_fmt="ld"
       ;;
   *-os2*)
       size_t_fmt="lu"
       ;;
   *-solaris*)
       if test "$ac_cv_sizeof_long" = "8"; then
         pid_t_fmt='#define APR_PID_T_FMT "d"'
       else
         pid_t_fmt='#define APR_PID_T_FMT "ld"'
       fi
       ;;
   *aix4*|*aix5*)
       ssize_t_fmt="ld"
       size_t_fmt="lu"
       ;;
    *beos*)
        ssize_t_fmt="ld"
        size_t_fmt="ld"
        ;;
    *apple-darwin*)
        osver=`uname -r`
        case $osver in
           [[0-7]].*)
              ssize_t_fmt="d"
              ;;
           *)
              ssize_t_fmt="ld"
              ;;
        esac
        size_t_fmt="lu"
        ;;
    *-mingw*)
        int64_t_fmt='#define APR_INT64_T_FMT "I64d"'
        uint64_t_fmt='#define APR_UINT64_T_FMT "I64u"'
        uint64_t_hex_fmt='#define APR_UINT64_T_HEX_FMT "I64x"'
        int64_value="__int64"
        long_value="__int64"
        int64_strfn="_strtoi64"
        ;; 
esac

APR_CHECK_TYPES_COMPATIBLE(ssize_t, int, [ssize_t_fmt="d"])
APR_CHECK_TYPES_COMPATIBLE(ssize_t, long, [ssize_t_fmt="ld"])
APR_CHECK_TYPES_COMPATIBLE(size_t, unsigned int, [size_t_fmt="u"])
APR_CHECK_TYPES_COMPATIBLE(size_t, unsigned long, [size_t_fmt="lu"])

APR_CHECK_SIZEOF_EXTENDED([#include <sys/types.h>], ssize_t, 8)

AC_MSG_CHECKING([which format to use for apr_ssize_t])
if test -n "$ssize_t_fmt"; then
    AC_MSG_RESULT(%$ssize_t_fmt)
elif test "$ac_cv_sizeof_ssize_t" = "$ac_cv_sizeof_int"; then
    ssize_t_fmt="d"
    AC_MSG_RESULT(%d)
elif test "$ac_cv_sizeof_ssize_t" = "$ac_cv_sizeof_long"; then
    ssize_t_fmt="ld"
    AC_MSG_RESULT(%ld)
else
    AC_ERROR([could not determine the proper format for apr_ssize_t])
fi

ssize_t_fmt="#define APR_SSIZE_T_FMT \"$ssize_t_fmt\""

APR_CHECK_SIZEOF_EXTENDED([#include <stddef.h>], size_t, 8)

AC_MSG_CHECKING([which format to use for apr_size_t])
if test -n "$size_t_fmt"; then
    AC_MSG_RESULT(%$size_t_fmt)
elif test "$ac_cv_sizeof_size_t" = "$ac_cv_sizeof_int"; then
    size_t_fmt="d"
    AC_MSG_RESULT(%d)
elif test "$ac_cv_sizeof_size_t" = "$ac_cv_sizeof_long"; then
    size_t_fmt="ld"
    AC_MSG_RESULT(%ld)
else
    AC_ERROR([could not determine the proper format for apr_size_t])
fi

size_t_fmt="#define APR_SIZE_T_FMT \"$size_t_fmt\""

APR_CHECK_SIZEOF_EXTENDED([#include <sys/types.h>], off_t, 8)

if test "${ac_cv_sizeof_off_t}${apr_cv_use_lfs64}" = "4yes"; then
    # Enable LFS
    aprlfs=1
    AC_CHECK_FUNCS([mmap64 sendfile64 sendfilev64 readdir64_r])
    case $host in
        *-hp-hpux*)
            dnl mkstemp64 is limited to 26 temporary files (a-z); use APR replacement
            ;;
        *)
            AC_CHECK_FUNCS(mkstemp64)
            ;;
    esac
elif test "${ac_cv_sizeof_off_t}" != "${ac_cv_sizeof_size_t}"; then
    # unsure of using -gt above is as portable, can can't forsee where
    # off_t can legitimately be smaller than size_t
    aprlfs=1
else
    aprlfs=0     
fi

AC_MSG_CHECKING([which type to use for apr_off_t])
if test "${ac_cv_sizeof_off_t}${apr_cv_use_lfs64}" = "4yes"; then
    # LFS is go!
    off_t_fmt='#define APR_OFF_T_FMT APR_INT64_T_FMT'
    off_t_value='off64_t'
    off_t_strfn='apr_strtoi64'
elif test "${ac_cv_sizeof_off_t}x${ac_cv_sizeof_long}" = "4x4"; then
    # Special case: off_t may change size with _FILE_OFFSET_BITS
    # on 32-bit systems with LFS support.  To avoid compatibility
    # issues when other packages do define _FILE_OFFSET_BITS,
    # hard-code apr_off_t to long.
    off_t_value=long
    off_t_fmt='#define APR_OFF_T_FMT "ld"'
    off_t_strfn='strtol'
elif test "$ac_cv_type_off_t" = "yes"; then
    off_t_value=off_t
    # off_t is more commonly a long than an int; prefer that case
    # where int and long are the same size.
    if test "$ac_cv_sizeof_off_t" = "$ac_cv_sizeof_long"; then
        off_t_fmt='#define APR_OFF_T_FMT "ld"'
        off_t_strfn='strtol'
    elif test "$ac_cv_sizeof_off_t" = "$ac_cv_sizeof_int"; then
        off_t_fmt='#define APR_OFF_T_FMT "d"'
        off_t_strfn='strtoi'
    elif test "$ac_cv_sizeof_off_t" = "$ac_cv_sizeof_long_long"; then
        off_t_fmt='#define APR_OFF_T_FMT APR_INT64_T_FMT'
        off_t_strfn='apr_strtoi64'
    else
        AC_ERROR([could not determine the size of off_t])
    fi
    # Per OS tuning...
    case $host in
    *-mingw*)
        off_t_value=apr_int64_t
        off_t_fmt='#define APR_OFF_T_FMT "I64d"'
        off_t_strfn='_strtoi64'
        ;;
    esac
else
   # Fallback on int
   off_t_value=apr_int32_t
   off_t_fmt=d
   off_t_strfn='strtoi'
fi
AC_MSG_RESULT($off_t_value)

# Regardless of whether _LARGEFILE64_SOURCE is used, on some
# platforms _FILE_OFFSET_BITS will affect the size of ino_t and hence
# the build-time ABI may be different from the apparent ABI when using
# APR with another package which *does* define _FILE_OFFSET_BITS.
# (Exactly as per the case above with off_t where LFS is *not* used)
#
# To be safe, hard-code apr_ino_t as 'unsigned long' or 'unsigned int'
# iff that is exactly the size of ino_t here; otherwise use ino_t as existing
# releases did.  To be correct, apr_ino_t should have been made an
# ino64_t as apr_off_t is off64_t, but this can't be done now without
# breaking ABI.

# Per OS tuning...
case $host in
*mingw*)
    ino_t_value=apr_int64_t
    ;;
*)
    ino_t_value=ino_t
    APR_CHECK_SIZEOF_EXTENDED(AC_INCLUDES_DEFAULT, ino_t, $ac_cv_sizeof_long)
    if test $ac_cv_sizeof_ino_t = 4; then
        if test $ac_cv_sizeof_long = 4; then
            ino_t_value="unsigned long"
        else
            ino_t_value="unsigned int"
        fi
    fi
    ;;
esac
AC_MSG_NOTICE([using $ino_t_value for ino_t])

# Checks for endianness
AC_C_BIGENDIAN
if test $ac_cv_c_bigendian = yes; then
    bigendian=1
else
    bigendian=0
fi

APR_CHECK_SIZEOF_EXTENDED([#include <sys/types.h>
#include <sys/uio.h>],struct iovec,0)
if test "$ac_cv_sizeof_struct_iovec" = "0"; then
    have_iovec=0
else
    have_iovec=1
fi

AC_SUBST(voidp_size)
AC_SUBST(short_value)
AC_SUBST(int_value)
AC_SUBST(long_value)
AC_SUBST(int64_value)
AC_SUBST(off_t_value)
AC_SUBST(size_t_value)
AC_SUBST(ssize_t_value)
AC_SUBST(socklen_t_value)
AC_SUBST(int64_t_fmt) 
AC_SUBST(uint64_t_fmt) 
AC_SUBST(uint64_t_hex_fmt) 
AC_SUBST(ssize_t_fmt) 
AC_SUBST(size_t_fmt)