configure.in

linux subdivision ying gai ke yi le ba

            pthread_mutex_t mutex;
            pthread_mutexattr_t attr;
            if (pthread_mutexattr_init(&attr))
                exit(1);
            if (pthread_mutexattr_setpshared(&attr, PTHREAD_PROCESS_SHARED))
                exit(2);
            if (pthread_mutex_init(&mutex, &attr))
                exit(3);
            if (pthread_mutexattr_destroy(&attr))
                exit(4);
            if (pthread_mutex_destroy(&mutex))
                exit(5);
            exit(0);
        }], [apr_cv_process_shared_works=yes], [apr_cv_process_shared_works=no])])
      # Override detection of pthread_mutexattr_setpshared
      ac_cv_func_pthread_mutexattr_setpshared=$apr_cv_process_shared_works])

    if test "$ac_cv_func_pthread_mutexattr_setpshared" = "yes"; then
        AC_CHECK_FUNCS(pthread_mutexattr_setrobust_np)
        if test "$ac_cv_func_pthread_mutexattr_setrobust_np" = "no"; then
            AC_CACHE_CHECK([for pthread_mutexattr_setrobust_np with _POSIX_THREAD_PRIO_INHERIT],
            [apr_cv_setrobust_with_prio_inherit], [
            AC_TRY_COMPILE([#define _POSIX_THREAD_PRIO_INHERIT
#include <sys/types.h>
#include <pthread.h>],[
            int main()
            {
                pthread_mutexattr_t attr;
                pthread_mutexattr_setrobust_np(&attr, PTHREAD_MUTEX_ROBUST_NP);
                return 0;
            }], [apr_cv_setrobust_with_prio_inherit=yes], [apr_cv_setrobust_with_prio_inherit=no])])
            if test "$apr_cv_setrobust_with_prio_inherit" = "yes"; then
                ac_cv_func_pthread_mutexattr_setrobust_np=yes
                APR_ADDTO(CPPFLAGS, -D_POSIX_THREAD_PRIO_INHERIT)
            fi
        fi
    fi
fi

# See which lock mechanisms we can support on this system.
APR_IFALLYES(header:semaphore.h func:sem_open func:sem_close dnl
             func:sem_unlink func:sem_post func:sem_wait,
             hasposixser="1", hasposixser="0")
APR_IFALLYES(func:semget func:semctl define:SEM_UNDO, hassysvser="1", 
             hassysvser="0")
APR_IFALLYES(func:flock define:LOCK_EX, hasflockser="1", hasflockser="0")
APR_IFALLYES(header:fcntl.h define:F_SETLK, hasfcntlser="1", hasfcntlser="0")
# note: the current APR use of shared mutex requires /dev/zero
APR_IFALLYES(header:pthread.h define:PTHREAD_PROCESS_SHARED dnl
             func:pthread_mutexattr_setpshared dnl
             file:/dev/zero,
             hasprocpthreadser="1", hasprocpthreadser="0")
APR_IFALLYES(struct:pthread_rw, hasrwlockser="1", hasrwlockser="0")

# See which lock mechanism we'll select by default on this system.
# The last APR_DECIDE to execute sets the default.
# At this stage, we match the ordering in Apache 1.3
# which is (highest to lowest): sysvsem -> fcntl -> flock.
# POSIX semaphores and cross-process pthread mutexes are not
# used by default since they have less desirable behaviour when
# e.g. a process holding the mutex segfaults.
APR_BEGIN_DECISION([apr_lock implementation method])
APR_IFALLYES(func:flock define:LOCK_EX,
            APR_DECIDE(USE_FLOCK_SERIALIZE, [4.2BSD-style flock()]))
APR_IFALLYES(header:fcntl.h define:F_SETLK,
            APR_DECIDE(USE_FCNTL_SERIALIZE, [SVR4-style fcntl()]))
APR_IFALLYES(func:semget func:semctl define:SEM_UNDO,
            APR_DECIDE(USE_SYSVSEM_SERIALIZE, [SysV IPC semget()]))
if test "x$apr_lock_method" != "x"; then
    APR_DECISION_FORCE($apr_lock_method)
fi
APR_END_DECISION
AC_DEFINE_UNQUOTED($ac_decision)

flockser="0"
sysvser="0"
posixser="0"
procpthreadser="0"
fcntlser="0"
case $ac_decision in
    USE_FLOCK_SERIALIZE )
        flockser="1"
        ;;
    USE_FCNTL_SERIALIZE )
        fcntlser="1"
        ;;
    USE_SYSVSEM_SERIALIZE )
        sysvser="1"
        ;;
    USE_POSIXSEM_SERIALIZE )
        posixser="1"
        ;;
    USE_PROC_PTHREAD_SERIALIZE )
        procpthreadser="1"
        ;;
esac

AC_SUBST(hasflockser)
AC_SUBST(hassysvser)
AC_SUBST(hasposixser)
AC_SUBST(hasfcntlser)
AC_SUBST(hasprocpthreadser)
AC_SUBST(hasrwlockser)
AC_SUBST(flockser)
AC_SUBST(sysvser)
AC_SUBST(posixser)
AC_SUBST(fcntlser)
AC_SUBST(procpthreadser)
AC_SUBST(pthreadser)

AC_MSG_CHECKING(if all interprocess locks affect threads)
if test "x$apr_process_lock_is_global" = "xyes"; then
    proclockglobal="1"
    AC_MSG_RESULT(yes)
else
    proclockglobal="0"
    AC_MSG_RESULT(no)
fi

AC_SUBST(proclockglobal)

AC_MSG_CHECKING(if POSIX sems affect threads in the same process)
if test "x$apr_posixsem_is_global" = "xyes"; then
  AC_DEFINE(POSIXSEM_IS_GLOBAL, 1, 
            [Define if POSIX semaphores affect threads within the process])
  AC_MSG_RESULT(yes)
else
  AC_MSG_RESULT(no)
fi

AC_MSG_CHECKING(if SysV sems affect threads in the same process)
if test "x$apr_sysvsem_is_global" = "xyes"; then
  AC_DEFINE(SYSVSEM_IS_GLOBAL, 1,
            [Define if SysV semaphores affect threads within the process])
  AC_MSG_RESULT(yes)
else
  AC_MSG_RESULT(no)
fi

AC_MSG_CHECKING(if fcntl locks affect threads in the same process)
if test "x$apr_fcntl_is_global" = "xyes"; then
  AC_DEFINE(FCNTL_IS_GLOBAL, 1,
            [Define if fcntl locks affect threads within the process])
  AC_MSG_RESULT(yes)
else
  AC_MSG_RESULT(no)
fi

AC_MSG_CHECKING(if flock locks affect threads in the same process)
if test "x$apr_flock_is_global" = "xyes"; then
  AC_DEFINE(FLOCK_IS_GLOBAL, 1,
            [Define if flock locks affect threads within the process])
  AC_MSG_RESULT(yes)
else
  AC_MSG_RESULT(no)
fi

dnl ----------------------------- Checking for /dev/random 
AC_MSG_CHECKING(for entropy source)

AC_ARG_WITH(egd, 
  [  --with-egd[[=DIR]]        use EGD-compatible socket],
  [ AC_DEFINE(HAVE_EGD, 1, [Define if EGD is supported])
    if test "$withval" = "yes"; then
        AC_DEFINE_UNQUOTED(EGD_DEFAULT_SOCKET, ["/var/run/egd-pool","/dev/egd-pool","/etc/egd-pool","/etc/entropy"], 
         [Define to list of paths to EGD sockets])
    else
        AC_DEFINE_UNQUOTED(EGD_DEFAULT_SOCKET, ["$withval"])
    fi
    AC_MSG_RESULT(EGD-compatible daemon)
    rand="1"
  ])

if test "$rand" != "1"; then
  AC_ARG_WITH(devrandom,
    [  --with-devrandom[[=DEV]]  use /dev/random or compatible [[searches by default]]],
    [ apr_devrandom="$withval" ], [ apr_devrandom="yes" ])

  if test "$apr_devrandom" = "yes"; then
    # /dev/random on OpenBSD doesn't provide random data, so
    # prefer /dev/arandom, which does; see random(4).
    for f in /dev/arandom /dev/random /dev/urandom; do
      if test -r $f; then
        apr_devrandom=$f
        rand=1
        break
      fi
    done
  elif test "$apr_devrandom" != "no"; then
    if test -r "$apr_devrandom"; then
      rand="1"
    else
      AC_ERROR([$apr_devrandom not found or unreadable.])
    fi
  fi

  if test "$rand" = "1"; then
    AC_DEFINE_UNQUOTED(DEV_RANDOM, ["$apr_devrandom"], [Define to path of random device])
    AC_MSG_RESULT([$apr_devrandom])
  fi
fi

if test "$rand" != "1"; then
    case $host in
        # we have built in support for OS/2
        *-os2*)
            AC_MSG_RESULT([Using OS/2 builtin random])
            rand="1"
            ;;
        *)
            if test "$rand" != "1"; then
              if test "$ac_cv_lib_truerand_main" = "yes"; then
                AC_DEFINE(HAVE_TRUERAND, 1, [Define if truerand is supported])
                AC_MSG_RESULT(truerand)
                rand="1"
              else
                AC_MSG_RESULT(not found)
                rand="0"
              fi
            fi
            ;;
    esac
fi

AC_SUBST(rand)
dnl ----------------------------- Checking for Time Support 
echo "${nl}Checking for Time Support..."
AC_CACHE_CHECK([for tm_gmtoff in struct tm], ac_cv_struct_tm_gmtoff,
[AC_TRY_COMPILE([#include <sys/types.h>
#include <time.h>], [struct tm tm; tm.tm_gmtoff;],
  ac_cv_struct_tm_gmtoff=yes, ac_cv_struct_tm_gmtoff=no)])

if test "$ac_cv_struct_tm_gmtoff" = "yes"; then
    AC_DEFINE(HAVE_GMTOFF, 1, [Define if struct tm has a tm_gmtoff field])
fi

dnl ----------------------------- Checking for Networking Support 
echo "${nl}Checking for Networking support..."
AC_MSG_CHECKING(for in_addr in netinet/in.h)
AC_TRY_COMPILE([
#include <sys/types.h>
#include <netinet/in.h>
],[
struct in_addr arg;
arg.s_addr = htonl(INADDR_ANY);
], [ have_in_addr="1" 
msg=yes ] , [ have_in_addr="0"
msg=no ])
AC_MSG_RESULT([$msg])

AC_MSG_CHECKING([if fd == socket on this platform])
if test "x$file_as_socket" != "x0" ; then
    file_as_socket="1";
    echo "yes"
else
    echo "no"
fi

AC_SUBST(have_in_addr)
AC_SUBST(file_as_socket)

# Check the types only if we have gethostbyname_r
if test "$ac_cv_func_gethostbyname_r" = "yes"; then
    APR_CHECK_GETHOSTBYNAME_R_STYLE
fi

APR_CHECK_TCP_NODELAY_INHERITED
APR_CHECK_O_NONBLOCK_INHERITED

# Look for a way of corking TCP...
APR_CHECK_DEFINE(TCP_CORK, netinet/tcp.h)
APR_CHECK_DEFINE(TCP_NOPUSH, netinet/tcp.h)
apr_tcp_nopush_flag="0"
have_corkable_tcp="0"
if test "x$ac_cv_define_TCP_CORK" = "xyes"; then
    apr_tcp_nopush_flag="TCP_CORK"
    have_corkable_tcp="1"
else
    case $host in
        *linux*)
            AC_EGREP_CPP(yes,[
#include <linux/socket.h>
#ifdef TCP_CORK
yes
#endif
            ],[
                apr_tcp_nopush_flag="3"
                have_corkable_tcp="1"
            ])
            ;;
        *)
            ;;
    esac
fi
if test "x$ac_cv_define_TCP_NOPUSH" = "xyes"; then
    apr_tcp_nopush_flag="TCP_NOPUSH"
    have_corkable_tcp="1"
fi

APR_CHECK_DEFINE(SO_ACCEPTFILTER, sys/socket.h)
if test "x$ac_cv_define_SO_ACCEPTFILTER" = "xyes"; then
    acceptfilter="1"
else
    acceptfilter="0"
fi

APR_CHECK_SCTP

AC_SUBST(apr_tcp_nopush_flag)
AC_SUBST(have_corkable_tcp)
AC_SUBST(acceptfilter)
AC_SUBST(have_sctp)

AC_CHECK_FUNCS(set_h_errno)
APR_CHECK_RESOLV_RETRANS

echo "${nl}Checking for IPv6 Networking support..."
dnl Start of checking for IPv6 support...

AC_ARG_ENABLE(ipv6,
  [  --disable-ipv6          Disable IPv6 support in APR.],
  [ if test "$enableval" = "no"; then
        user_disabled_ipv6=1
    fi ],
  [ user_disabled_ipv6=0 ] )

case $host in
  *)
    broken_ipv6=0
esac

AC_SEARCH_LIBS(getaddrinfo, socket inet6)
AC_SEARCH_LIBS(gai_strerror, socket inet6)
AC_SEARCH_LIBS(getnameinfo, socket inet6)
AC_CHECK_FUNCS(gai_strerror)
APR_CHECK_WORKING_GETADDRINFO
APR_CHECK_NEGATIVE_EAI
APR_CHECK_WORKING_GETNAMEINFO
APR_CHECK_SOCKADDR_IN6

have_ipv6="0"
if test "$user_disabled_ipv6" = 1; then
    ipv6_result="no -- disabled by user"
else
    if test "x$broken_ipv6" = "x0"; then
        if test "x$have_sockaddr_in6" = "x1"; then
            if test "x$ac_cv_working_getaddrinfo" = "xyes"; then
                if test "x$ac_cv_working_getnameinfo" = "xyes"; then
                    have_ipv6="1"
                    ipv6_result="yes"
                else
                    ipv6_result="no -- no getnameinfo"
                fi
            else
                ipv6_result="no -- no working getaddrinfo"
            fi
        else
            ipv6_result="no -- no sockaddr_in6"
        fi
    else
        ipv6_result="no -- the platform has known problems supporting IPv6"
    fi
fi

AC_MSG_CHECKING(if APR supports IPv6)
AC_MSG_RESULT($ipv6_result)

AC_SUBST(have_ipv6)

dnl Check for langinfo support

AC_CHECK_HEADERS(langinfo.h)
AC_CHECK_FUNCS(nl_langinfo)

dnl Random late checks...

# AC_CHECK_FUNCS is not sufficient since the function may be usable when
# struct stat64 is not exposed (e.g. HP-UX).  Note that fstat64 only
# happens to be usable on Linux because -D_GNU_SOURCE is picked up
# by the earlier crypt_r check.
AC_CACHE_CHECK([for usable fstat64], [apr_cv_func_fstat64],
 [AC_TRY_COMPILE([#include <sys/types.h>
#include <sys/stat.h>
#include <unistd.h>], [struct stat64 st; fstat64(0, &st);],
  [apr_cv_func_fstat64=yes], [apr_cv_func_fstat64=no])])
if test $apr_cv_func_fstat64 = yes; then
  AC_DEFINE(HAVE_FSTAT64, 1, [Define if fstat64 can be used])
fi


dnl ----------------------------- Finalize the variables

echo "${nl}Restore user-defined environment settings..."

APR_RESTORE_THE_ENVIRONMENT(CPPFLAGS, EXTRA_)
APR_RESTORE_THE_ENVIRONMENT(CFLAGS, EXTRA_)
APR_RESTORE_THE_ENVIRONMENT(LDFLAGS, EXTRA_)
APR_RESTORE_THE_ENVIRONMENT(LIBS, EXTRA_)
APR_RESTORE_THE_ENVIRONMENT(INCLUDES, EXTRA_)
AC_SUBST(NOTEST_CPPFLAGS)
AC_SUBST(NOTEST_CFLAGS)
AC_SUBST(NOTEST_LDFLAGS)
AC_SUBST(NOTEST_LIBS)
AC_SUBST(NOTEST_INCLUDES)

dnl ----------------------------- Construct the files

AC_SUBST(LDLIBS)
AC_SUBST(AR)
AC_SUBST(RM)
AC_SUBST(OSDIR)
AC_SUBST(DEFAULT_OSDIR)
AC_SUBST(EXEEXT)
AC_SUBST(LIBTOOL_LIBS)

echo "${nl}Construct Makefiles and header files."
MAKEFILE1="Makefile strings/Makefile passwd/Makefile tables/Makefile build/Makefile"
SUBDIRS="strings passwd tables "
for dir in $apr_modules
do
    test -d $dir || $MKDIR $dir
    if test -f $srcdir/$dir/$OSDIR/Makefile.in; then
        MAKEFILE2="$MAKEFILE2 $dir/$OSDIR/Makefile "
        SUBDIRS="$SUBDIRS $dir/$OSDIR "
    else
        MAKEFILE2="$MAKEFILE2 $dir/$DEFAULT_OSDIR/Makefile "
        SUBDIRS="$SUBDIRS $dir/$DEFAULT_OSDIR "
    fi
done

if test -d $srcdir/test; then
    MAKEFILE3="test/Makefile test/internal/Makefile"
fi
AC_SUBST(SUBDIRS)

#
# BSD/OS (BSDi) needs to use a different include syntax in the Makefiles
#
case $host in
*bsdi*)
    # Check whether they've installed GNU make
    if make --version > /dev/null 2>&1; then 
	INCLUDE_RULES="include $apr_buildout/apr_rules.mk"
    else
	# BSDi make
	INCLUDE_RULES=".include \"$apr_buildout/apr_rules.mk\""
    fi
    ;;
*)
    INCLUDE_RULES="include $apr_buildout/apr_rules.mk"
    ;;
esac
AC_SUBST(INCLUDE_RULES)

SAVE_FILES="include/apr.h include/arch/unix/apr_private.h"

for i in $SAVE_FILES; do
  test -r $i && mv $i $i.save
done

dir=include/arch/unix
test -d $dir || $MKDIR $dir

AC_OUTPUT([
	$MAKEFILE1 $MAKEFILE2 $MAKEFILE3
	include/apr.h
	build/apr_rules.mk
	build/pkg/pkginfo
	apr-config
],[
for i in $SAVE_FILES; do
  if cmp -s $i $i.save 2>/dev/null; then
    mv $i.save $i
    echo "$i is unchanged"
  fi
  rm -f $i.save
done
chmod +x apr-config
])

dnl ----------------------------- Fixup Makefiles for VPATH support

changequote({,})

if test -n "$USE_VPATH"; then
  for makefile in $MAKEFILE1 $MAKEFILE2 $MAKEFILE3; do
    cat $makefile | \
        sed \
		-e 's#-I\($(INCDIR[0-9]*)\)#-I\1 -I$(srcdir)/\1#g' \
		-e 's#-I\($(OSDIR[0-9]*)\)#-I\1 -I$(srcdir)/\1#g' \
		-e 's#-I\($(DEFOSDIR[0-9]*)\)#-I\1 -I$(srcdir)/\1#g' \
		> tmp
    cp tmp $makefile
  done
  rm -f tmp
fi

changequote([,])