aclocal.m4

A part of LFS.This is a server software.

$2
],[
sizeof($1);
], sfs_cv_type_[]translit($1, [ ], [_])=yes, sfs_cv_type_[]translit($1, [ ], [_])=no))
if test $sfs_cv_type_[]translit($1, [ ], [_]) = yes; then
        AC_DEFINE(HAVE_[]translit($1, [a-z ], [A-Z_]), 1,
		  Define if system headers declare a $1 type.)
fi])
dnl
dnl Check for struct cmsghdr (for passing file descriptors)
dnl
AC_DEFUN(SFS_CHECK_FDPASS,
[
AC_CACHE_CHECK(for fd passing with msg_accrights in msghdr,
		sfs_cv_accrights,
AC_TRY_COMPILE([
#include <sys/types.h>
#include <sys/socket.h>
],[
struct msghdr mh;
mh.msg_accrights = 0;
], sfs_cv_accrights=yes, sfs_cv_accrights=no))

AC_CACHE_CHECK(for fd passing with struct cmsghdr, sfs_cv_cmsghdr,
if test "$sfs_cv_accrights" != "yes"; then
AC_TRY_COMPILE([
#include <sys/types.h>
#include <sys/socket.h>
],[
struct msghdr mh;
struct cmsghdr cmh;
mh.msg_control = (void *) &cmh;
], sfs_cv_cmsghdr=yes, sfs_cv_cmsghdr=no)
else
	sfs_cv_cmsghdr=no
fi)

if test $sfs_cv_accrights = yes; then
	AC_DEFINE(HAVE_ACCRIGHTS, 1,
	Define if msghdr has msg_accrights field for passing file descriptors.)
fi
if test $sfs_cv_cmsghdr = yes; then
	AC_DEFINE(HAVE_CMSGHDR, 1,
	Define if system has cmsghdr structure for passing file descriptors.)
fi])
dnl
dnl Check for sa_len in struct sockaddrs
dnl
AC_DEFUN(SFS_CHECK_SA_LEN,
[AC_CACHE_CHECK(for sa_len in struct sockaddr, sfs_cv_sa_len,
AC_TRY_COMPILE([
#include <sys/types.h>
#include <sys/socket.h>
],[
struct sockaddr sa;
sa.sa_len = 0;
], sfs_cv_sa_len=yes, sfs_cv_sa_len=no))
if test $sfs_cv_sa_len = yes; then
	AC_DEFINE(HAVE_SA_LEN, 1,
	Define if struct sockaddr has sa_len field.)
fi])
dnl
dnl Check for sockaddr_storage
dnl
AC_DEFUN(SFS_CHECK_SOCKADDR_STORAGE,
[SFS_CHECK_TYPE(struct sockaddr_storage)
AC_CACHE_CHECK(for __ss_len in sockaddr_storage, sfs_cv_ss_len_underscores,
AC_TRY_COMPILE([
#include <sys/types.h>
#include <sys/socket.h>
],[
struct sockaddr_storage ss;
ss.__ss_len = 0;
], sfs_cv_ss_len_underscores=yes, sfs_cv_ss_len_underscores=no))
if test $sfs_cv_ss_len_underscores = yes; then
	AC_DEFINE(HAVE_SS_LEN_UNDERSCORES, 1,
	Define if struct sockaddr_storage has __ss_len field, not ss_len)
fi])
dnl
dnl Check something about the nfs_args field
dnl
AC_DEFUN(SFS_TRY_NFSARG_FIELD,
[AC_TRY_COMPILE([
#include "${srcdir}/nfsconf.h"
],[
struct nfs_args na;
$1;
], $2, $3)])
dnl
dnl Check a particular field in nfs_args
dnl
AC_DEFUN(SFS_CHECK_NFSMNT_FIELD,
[AC_CACHE_CHECK(for $1 in nfs_args structure, sfs_cv_nfsmnt_$1,
SFS_TRY_NFSARG_FIELD(na.$1, sfs_cv_nfsmnt_$1=yes, sfs_cv_nfsmnt_$1=no))
if test $sfs_cv_nfsmnt_$1 = yes; then
  AC_DEFINE(HAVE_NFSMNT_[]translit($1, [a-z], [A-Z]), 1,
	    Define if the nfs_args structure has a $1 field.)
fi])
dnl
dnl Check if nfs_args hostname field is an array
dnl
AC_DEFUN(SFS_CHECK_NFSARG_HOSTNAME_ARRAY,
[AC_CACHE_CHECK(if nfs_args hostname field is an array, sfs_cv_nfs_hostarray,
	SFS_TRY_NFSARG_FIELD(na.hostname = 0,
		sfs_cv_nfs_hostarray=no, sfs_cv_nfs_hostarray=yes))
if test $sfs_cv_nfs_hostarray = yes; then
  AC_DEFINE(HAVE_NFSARG_HOSTNAME_ARRAY, 1,
	[The hostname field of nfs_arg is an array])
fi])
dnl
dnl Check if addr field is a pointer or not
dnl
AC_DEFUN(SFS_CHECK_NFSARG_ADDR_PTR,
[AC_CHECK_HEADERS(tiuser.h)
AC_CACHE_CHECK(if nfs_args addr field is a pointer, sfs_cv_nfsmnt_addr_ptr,
	SFS_TRY_NFSARG_FIELD(na.addr = (void *) 0, sfs_cv_nfsmnt_addr_ptr=yes,
				sfs_cv_nfsmnt_addr_ptr=no))
if test $sfs_cv_nfsmnt_addr_ptr = yes; then
  AC_DEFINE(HAVE_NFSARG_ADDR_PTR, 1,
	[The addr field of nfs_arg is a pointer])
  AC_CACHE_CHECK(if nfs_args addr is a netbuf *, sfs_cv_nfsmnt_addr_netbuf,
	SFS_TRY_NFSARG_FIELD(struct netbuf nb; *na.addr = nb,
	  sfs_cv_nfsmnt_addr_netbuf=yes, sfs_cv_nfsmnt_addr_netbuf=no))
  if test $sfs_cv_nfsmnt_addr_netbuf = yes; then
    AC_DEFINE(HAVE_NFSARG_ADDR_NETBUF, 1,
	[If the nfs_arg addr field is a netbuf pointer])
  fi
fi])
dnl
dnl Check for SVR4-like nfs_fh3 structure
dnl
AC_DEFUN(SFS_CHECK_FH3_SVR4,
[if test "$sfs_cv_nfsmnt_fhsize" != yes; then
  AC_CACHE_CHECK(for SVR4-like struct nfs_fh3, sfs_cv_fh3_svr4,
  AC_TRY_COMPILE([#include "${srcdir}/nfsconf.h"],
                 [ struct nfs_fh3 fh;
                   switch (0) case 0: case sizeof (fh.fh3_u.data) == 64:; ],
                 sfs_cv_fh3_svr4=yes, sfs_cv_fh3_svr4=no))
  if test $sfs_cv_fh3_svr4 = yes; then
    AC_DEFINE(HAVE_SVR4_FH3, 1,
	[The the fh field of the nfs_arg structure points to an SVR4 nfs_fh3])
  fi
fi])
dnl
dnl Check for 2 argument unmount
dnl
AC_DEFUN(SFS_CHECK_UNMOUNT_FLAGS,
[AC_CACHE_CHECK(for a 2 argument unmount, sfs_cv_umount_flags,
AC_TRY_COMPILE([
#include <sys/param.h>
#include <sys/mount.h>
],[
#ifdef HAVE_UNMOUNT
unmount
#else /* !HAVE_UNMOUNT */
umount
#endif /* !HAVE_UNMOUNT */
	(0);
], sfs_cv_umount_flags=no, sfs_cv_umount_flags=yes))
if test $sfs_cv_umount_flags = yes; then
	AC_DEFINE(UNMOUNT_FLAGS, 1,
		  Define if the unmount system call has 2 arguments.)
else
	AC_CHECK_FUNCS(umount2)
fi])
dnl
dnl Check if we can find the nfs_args structure
dnl
AC_DEFUN(SFS_CHECK_NFSMNT,
[AC_CHECK_FUNCS(vfsmount unmount)
need_nfs_nfs_h=no
AC_EGREP_HEADER(nfs_args, sys/mount.h,,
	AC_EGREP_HEADER(nfs_args, nfs/mount.h,
		AC_DEFINE(NEED_NFS_MOUNT_H, 1,
			[The nfs_args structure is in <nfs/nfsmount.h>]))
	AC_EGREP_HEADER(nfs_args, nfs/nfsmount.h,
		AC_DEFINE(NEED_NFS_NFSMOUNT_H, 1,
			[The nfs_args structure is in <nfs/nfsmount.h]))
	AC_EGREP_HEADER(nfs_args, nfsclient/nfs.h,
		AC_DEFINE(NEED_NFSCLIENT_NFS_H, 1,
			[The nfs_args structure is in <nfsclient/nfs.h>]))
	AC_EGREP_HEADER(nfs_args, nfs/nfs.h,
		AC_DEFINE(NEED_NFS_NFS_H, 1,
			[The nfs_args structure is in <nfs/nfs.h>])
		need_nfs_nfs_h=yes))
AC_CACHE_CHECK(for nfs_args mount structure, sfs_cv_nfsmnt_ok,
	SFS_TRY_NFSARG_FIELD(, sfs_cv_nfsmnt_ok=yes, sfs_cv_nfsmnt_ok=no))
if test $sfs_cv_nfsmnt_ok = no; then
	AC_MSG_ERROR([Could not find NFS mount argument structure!])
fi
if test "$need_nfs_nfs_h" = no; then
	AC_EGREP_HEADER(nfs_fh3, nfs/nfs.h,
		AC_DEFINE(NEED_NFS_NFS_H, 1,
			[The nfs_args structure is in <nfs/nfs.h>])
			need_nfs_nfs_h=yes)
fi
AC_CHECK_HEADERS(linux/nfs2.h)
SFS_CHECK_NFSMNT_FIELD(addrlen)
SFS_CHECK_NFSMNT_FIELD(sotype)
SFS_CHECK_NFSMNT_FIELD(proto)
SFS_CHECK_NFSMNT_FIELD(fhsize)
SFS_CHECK_NFSMNT_FIELD(fd)

dnl Check whether we have Linux 2.2 NFS V3 mount structure
SFS_CHECK_NFSMNT_FIELD(old_root)

dnl Check whether file handle is named "root" or "fh"
SFS_CHECK_NFSMNT_FIELD(root)
SFS_CHECK_NFSMNT_FIELD(fh)
dnl ksh apparently cannot handle this as a compound test.
if test "$sfs_cv_nfsmnt_root" = "no"; then
  if test "$sfs_cv_nfsmnt_fh" = "no"; then
    AC_MSG_ERROR([Could not find the nfs_args file handle field!])
  fi
fi
AC_CHECK_HEADERS(sys/mntent.h)
SFS_CHECK_FH3_SVR4
if test "$sfs_cv_nfsmnt_fh" = yes; then
  if test "$sfs_cv_fh3_svr4" = yes -o "$sfs_cv_nfsmnt_fhsize" = yes; then
    AC_DEFINE(HAVE_NFS_V3, 1, [If the system supports NFS 3])
  fi
elif test "$sfs_cv_nfsmnt_old_root" = yes; then
  AC_DEFINE(HAVE_NFS_V3, 1, [If the system supports NFS 3])
fi

SFS_CHECK_NFSARG_HOSTNAME_ARRAY
SFS_CHECK_NFSARG_ADDR_PTR
SFS_CHECK_UNMOUNT_FLAGS])
dnl
dnl Use -ldb only if we need it.
dnl
AC_DEFUN(SFS_FIND_DB,
[AC_CHECK_FUNC(dbopen)
if test $ac_cv_func_dbopen = no; then
	AC_CHECK_LIB(db, dbopen)
	if test $ac_cv_lib_db_dbopen = no; then
	  AC_MSG_ERROR([Could not find library for dbopen!])
	fi
fi
])
dnl
dnl Check something about the stat structure
dnl
AC_DEFUN(SFS_TRY_STAT_FIELD,
[AC_TRY_COMPILE([
#include <sys/stat.h>
],[
struct stat s;
$1;
], $2, $3)])
dnl
dnl Check for a particular field in stat
dnl
AC_DEFUN(SFS_CHECK_STAT_FIELD,
[AC_CACHE_CHECK(for $1 in stat structure, sfs_cv_stat_$1,
SFS_TRY_STAT_FIELD(s.$1, sfs_cv_stat_$1=yes, sfs_cv_stat_$1=no))
if test $sfs_cv_stat_$1 = yes; then
  AC_DEFINE(SFS_HAVE_STAT_[]translit($1, [a-z], [A-Z]), 1,
	    Define if the stat structure has a $1 field.)
fi])

dnl
dnl  Check whether we can get away with large socket buffers.
dnl
AC_DEFUN(SFS_CHECK_SOCK_BUF,
[AC_CACHE_CHECK(whether socket buffers > 64k are allowed, 
 		sfs_cv_large_sock_buf, AC_TRY_RUN([
#include <sys/types.h>
#include <sys/socket.h>

int
main() 
{
  int bigbuf = 0x11000;
  int s = socket(AF_INET, SOCK_STREAM, 0);
  if (setsockopt(s, SOL_SOCKET, SO_RCVBUF, (char *)&bigbuf, sizeof(bigbuf))<0)
    exit(1);
  exit(0);
}
], sfs_cv_large_sock_buf=yes, 
   sfs_cv_large_sock_buf=no, 
   sfs_cv_large_sock_buf=no))
if test $sfs_cv_large_sock_buf = yes; then
	AC_DEFINE(SFS_ALLOW_LARGE_BUFFER, 1,
		  Define if SO_SNDBUF/SO_RCVBUF can exceed 64K.)
fi])
dnl
dnl Find pthreads
dnl
AC_DEFUN(SFS_FIND_PTHREADS,
[AC_ARG_WITH(pthreads,
--with-pthreads=DIR       Specify location of pthreads)
ac_save_CFLAGS=$CFLAGS
ac_save_LIBS=$LIBS
dirs="$with_pthreads ${prefix} ${prefix}/pthreads"
dirs="$dirs /usr/local /usr/local/pthreads"
AC_CACHE_CHECK(for pthread.h, sfs_cv_pthread_h,
[for dir in " " $dirs; do
    iflags="-I${dir}/include"
    CFLAGS="${ac_save_CFLAGS} $iflags"
    AC_TRY_COMPILE([#include <pthread.h>], 0,
	sfs_cv_pthread_h="${iflags}"; break)
done])
if test -z "${sfs_cv_pthread_h+set}"; then
    AC_MSG_ERROR("Can\'t find pthread.h anywhere")
fi
AC_CACHE_CHECK(for libpthread, sfs_cv_libpthread,
[for dir in "" " " $dirs; do
    case $dir in
	"") lflags=" " ;;
	" ") lflags="-lpthread" ;;
	*) lflags="-L${dir}/lib -lpthread" ;;
    esac
    LIBS="$ac_save_LIBS $lflags"
    AC_TRY_LINK([#include <pthread.h>],
	pthread_create (0, 0, 0, 0);,
	sfs_cv_libpthread=$lflags; break)
done])
if test -z ${sfs_cv_libpthread+set}; then
    AC_MSG_ERROR("Can\'t find libpthread anywhere")
fi
CFLAGS=$ac_save_CFLAGS
CPPFLAGS="$CPPFLAGS $sfs_cv_pthread_h"
LIBS="$ac_save_LIBS $sfs_cv_libpthread"])
dnl
dnl Find GMP
dnl
AC_DEFUN(SFS_GMP,
[AC_ARG_WITH(gmp,
--with-gmp[[[=/usr/local]]]   specify path for gmp)
AC_SUBST(GMP_DIR)
AC_SUBST(LIBGMP)
AC_MSG_CHECKING([for GMP library])
test "$with_gmp" = "no" && unset with_gmp
if test -z "$with_gmp"; then
    if test -z "$GMP_DIR"; then
	for dir in `cd $srcdir && echo gmp*`; do
	    if test -d "$srcdir/$dir"; then
		GMP_DIR=$dir
		break
	    fi
	done
    fi
    if test "${with_gmp+set}" != set \
		-a "$GMP_DIR" -a -d "$srcdir/$GMP_DIR"; then
	GMP_DIR=`echo $GMP_DIR | sed -e 's!/$!!'`
	if test -f "$srcdir/$GMP_DIR/gmp-h.in"; then
	    CPPFLAGS="$CPPFLAGS "'-I$(top_builddir)/'"$GMP_DIR"
	else
	    CPPFLAGS="$CPPFLAGS "'-I$(top_srcdir)/'"$GMP_DIR"
	fi
	#LDFLAGS="$LDFLAGS "'-L$(top_builddir)/'"$GMP_DIR"
    else
	GMP_DIR=
	for dir in "$prefix" /usr/local /usr; do
	    if test \( -f $dir/lib/libgmp.a -o -f $dir/lib/libgmp.la \) \
		-a \( -f $dir/include/gmp.h -o -f $dir/include/gmp3/gmp.h \
			-o -f $dir/include/gmp2/gmp.h \); then
		    with_gmp=$dir
		    break
	    fi
	done
	if test -z "$with_gmp"; then
	    AC_MSG_ERROR([Could not find GMP library])
	fi
	test "$with_gmp" = /usr -a -f /usr/include/gmp.h && unset with_gmp
    fi
fi
if test "$with_gmp"; then
    unset GMP_DIR
    if test -f ${with_gmp}/include/gmp.h; then
	test "${with_gmp}" = /usr \
	    || CPPFLAGS="$CPPFLAGS -I${with_gmp}/include"
    elif test -f ${with_gmp}/include/gmp3/gmp.h; then
	CPPFLAGS="$CPPFLAGS -I${with_gmp}/include/gmp3"
    elif test -f ${with_gmp}/include/gmp2/gmp.h; then
	CPPFLAGS="$CPPFLAGS -I${with_gmp}/include/gmp2"
    else
	AC_MSG_ERROR([Could not find gmp.h header])
    fi

    #LDFLAGS="$LDFLAGS -L${with_gmp}/lib"
    #LIBGMP=-lgmp
    if test -f "${with_gmp}/lib/libgmp.la"; then
	LIBGMP="${with_gmp}/lib/libgmp.la"
    else
	LIBGMP="${with_gmp}/lib/libgmp.a"
    fi
    AC_MSG_RESULT([$LIBGMP])
elif test "$GMP_DIR"; then
    export GMP_DIR
    AC_MSG_RESULT([using distribution in $GMP_DIR subdirectory])
    LIBGMP='$(top_builddir)/'"$GMP_DIR/libgmp.la"
else
    AC_MSG_RESULT(yes)
    if test -f /usr/lib/libgmp.la; then
	LIBGMP=/usr/lib/libgmp.la
    elif test -f /usr/lib/libgmp.a; then
	# FreeBSD (among others) has a broken gmp shared library
	LIBGMP=/usr/lib/libgmp.a
    else
	LIBGMP=-lgmp
    fi
fi

AC_CONFIG_SUBDIRS($GMP_DIR)

ac_save_CFLAGS="$CFLAGS"
if test "$GMP_DIR"; then
    if test -f "${srcdir}/${GMP_DIR}"/gmp-h.in; then
	CFLAGS="$CFLAGS -I${srcdir}/${GMP_DIR}"
    else
	CFLAGS="$CFLAGS -I${builddir}/${GMP_DIR}"
    fi
fi