dnl -*- mode: m4-mode -*-
dnl Process this file with autoconf to produce a configure script.

dnl We must use autotools 2.53 or above
AC_PREREQ(2.53)
AC_INIT(Makefile.in)

AC_CONFIG_HEADER(module_config.h)
#dnl To make sure that didn't get #define PACKAGE_* in modules_config.h
#echo "" > confdefs.h

dnl Checks for programs.
AC_PROG_CC
AC_PROG_INSTALL
AC_CANONICAL_HOST

#################################################
# Directory handling stuff to support both the
# legacy SAMBA directories and FHS compliant
# ones...
AC_PREFIX_DEFAULT(/usr/local/samba)

AC_ARG_WITH(fhs, 
[  --with-fhs              Use FHS-compliant paths (default=no)],
    libdir="\${prefix}/lib/samba",
    libdir="\${prefix}/lib")

AC_SUBST(libdir)

SAMBA_SOURCE="../../source"
####################################################
# set the location location of the samba source tree
AC_ARG_WITH(samba-source,
[  --with-samba-source=DIR Where is the samba source tree (../../source)],
[ case "$withval" in
  yes|no)
  #
  # Just in case anybody calls it without argument
  #
    AC_MSG_WARN([--with-samba-source called without argument - will use default])
  ;;
  * )
    SAMBA_SOURCE="$withval"
    ;;
  esac])

AC_SUBST(SAMBA_SOURCE)

dnl Unique-to-Samba variables we'll be playing with.
AC_SUBST(CC)
AC_SUBST(SHELL)
AC_SUBST(LDSHFLAGS)
AC_SUBST(SONAMEFLAG)
AC_SUBST(SHLD)
AC_SUBST(HOST_OS)
AC_SUBST(PICFLAGS)
AC_SUBST(PICSUFFIX)
AC_SUBST(SHLIBEXT)
AC_SUBST(INSTALLCLIENTCMD_SH)
AC_SUBST(INSTALLCLIENTCMD_A)
AC_SUBST(SHLIB_PROGS)
AC_SUBST(EXTRA_BIN_PROGS)
AC_SUBST(EXTRA_SBIN_PROGS)
AC_SUBST(EXTRA_ALL_TARGETS)

AC_ARG_ENABLE(debug, 
[  --enable-debug          Turn on compiler debugging information (default=no)],
    [if eval "test x$enable_debug = xyes"; then
	CFLAGS="${CFLAGS} -g"
    fi])

AC_ARG_ENABLE(developer, [  --enable-developer      Turn on developer warnings and debugging (default=no)],
    [if eval "test x$enable_developer = xyes"; then
        developer=yes
    	CFLAGS="${CFLAGS} -g -Wall -Wshadow -Wstrict-prototypes -Wpointer-arith -Wcast-qual -Wcast-align -Wwrite-strings -DDEBUG_PASSWORD -DDEVELOPER"
    fi])

# compile with optimization and without debugging by default, but
# allow people to set their own preference.
if test "x$CFLAGS" = x
then
  CFLAGS="-O ${CFLAGS}"
fi

  #################################################
  # check for krb5-config from recent MIT and Heimdal kerberos 5
  AC_PATH_PROG(KRB5CONFIG, krb5-config)
  AC_MSG_CHECKING(for working krb5-config)
  if test -x "$KRB5CONFIG"; then
    CFLAGS="$CFLAGS `$KRB5CONFIG --cflags | sed s/@INCLUDE_des@//`" 
    CPPFLAGS="$CPPFLAGS `$KRB5CONFIG --cflags | sed s/@INCLUDE_des@//`"
    FOUND_KRB5=yes
    AC_MSG_RESULT(yes)
  else
    AC_MSG_RESULT(no. Fallback to previous krb5 detection strategy)
  fi
  
  if test x$FOUND_KRB5 = x"no"; then
  #################################################
  # check for location of Kerberos 5 install
  AC_MSG_CHECKING(for kerberos 5 install path)
  AC_ARG_WITH(krb5,
  [  --with-krb5=base-dir    Locate Kerberos 5 support (default=/usr)],
  [ case "$withval" in
    no)
      AC_MSG_RESULT(no)
      ;;
    *)
      AC_MSG_RESULT(yes)
      CFLAGS="$CFLAGS -I$withval/include"
      CPPFLAGS="$CPPFLAGS -I$withval/include"
      FOUND_KRB5=yes
      ;;
    esac ],
    AC_MSG_RESULT(no)
  )
  fi

if test x$FOUND_KRB5 = x"no"; then
#################################################
# see if this box has the SuSE location for the heimdal kerberos implementation
AC_MSG_CHECKING(for /usr/include/heimdal)
if test -d /usr/include/heimdal; then
    if test -f /usr/lib/heimdal/lib/libkrb5.a; then
        CFLAGS="$CFLAGS -I/usr/include/heimdal"
        CPPFLAGS="$CPPFLAGS -I/usr/include/heimdal"
        AC_MSG_RESULT(yes)
    else
        CFLAGS="$CFLAGS -I/usr/include/heimdal"
        CPPFLAGS="$CPPFLAGS -I/usr/include/heimdal"
        AC_MSG_RESULT(yes)
 
    fi
else
    AC_MSG_RESULT(no)
fi
fi


if test x$FOUND_KRB5 = x"no"; then
#################################################
# see if this box has the RedHat location for kerberos
AC_MSG_CHECKING(for /usr/kerberos)
if test -d /usr/kerberos -a -f /usr/kerberos/lib/libkrb5.a; then
    LDFLAGS="$LDFLAGS -L/usr/kerberos/lib"
    CFLAGS="$CFLAGS -I/usr/kerberos/include"
    CPPFLAGS="$CPPFLAGS -I/usr/kerberos/include"
    AC_MSG_RESULT(yes)
else
    AC_MSG_RESULT(no)
fi
fi

  # now check for krb5.h. Some systems have the libraries without the headers!
  # note that this check is done here to allow for different kerberos
  # include paths
  AC_CHECK_HEADERS(krb5.h)

  # now check for gssapi headers.  This is also done here to allow for
  # different kerberos include paths
  AC_CHECK_HEADERS(gssapi.h gssapi/gssapi_generic.h gssapi/gssapi.h com_err.h)

#dnl Check if we use GNU ld
#LD=ld
#AC_PROG_LD_GNU

#dnl look for executable suffix
#AC_EXEEXT

builddir=`pwd`
AC_SUBST(builddir)

# Assume non-shared by default and override below
BLDSHARED="false"

# these are the defaults, good for lots of systems
HOST_OS="$host_os"
LDSHFLAGS="-shared"
SONAMEFLAG="#"
SHLD="\${CC}"
PICFLAGS=""
PICSUFFIX="po"
SHLIBEXT="so"

# Since we are not embedded in the Samba tree, building shared modules is
# really the only option.
enable_shared=yes

if test "$enable_shared" = "yes"; then
  # this bit needs to be modified for each OS that is suported by
  # smbwrapper. You need to specify how to created a shared library and
  # how to compile C code to produce PIC object files

  AC_MSG_CHECKING([ability to build shared libraries])

  # and these are for particular systems
  case "$host_os" in
		*linux*)
			BLDSHARED="true"
			LDSHFLAGS="-shared" 
			DYNEXP="-Wl,--export-dynamic"
			PICFLAGS="-fPIC"
			SONAMEFLAG="-Wl,-soname="
			;;
		*solaris*)
			BLDSHARED="true"
			LDSHFLAGS="-G"
			SONAMEFLAG="-h "
			if test "${GCC}" = "yes"; then
				PICFLAGS="-fPIC"
				if test "${ac_cv_prog_gnu_ld}" = "yes"; then
					DYNEXP="-Wl,-E"
				fi
			else
				PICFLAGS="-KPIC"
				## ${CFLAGS} added for building 64-bit shared 
				## libs using Sun's Compiler
				LDSHFLAGS="-G \${CFLAGS}"
				PICSUFFIX="po.o"
			fi
			;;
		*sunos*)
			BLDSHARED="true"
			LDSHFLAGS="-G"
			SONAMEFLAG="-Wl,-h,"
			PICFLAGS="-KPIC"   # Is this correct for SunOS
			;;
		*netbsd* | *freebsd*)  BLDSHARED="true"
			LDSHFLAGS="-shared"
			DYNEXP="-Wl,--export-dynamic"
			SONAMEFLAG="-Wl,-soname,"
			PICFLAGS="-fPIC -DPIC"
			;;
		*openbsd*)  BLDSHARED="true"
			LDSHFLAGS="-shared"
			DYNEXP="-Wl,-Bdynamic"
			SONAMEFLAG="-Wl,-soname,"
			PICFLAGS="-fPIC"
			;;
		*irix*)
			case "$host_os" in
			*irix6*)
			;;
			esac
			ATTEMPT_WRAP32_BUILD=yes
			BLDSHARED="true"
			LDSHFLAGS="-set_version sgi1.0 -shared"
			SONAMEFLAG="-soname "
			SHLD="\${LD}"
			if test "${GCC}" = "yes"; then
				PICFLAGS="-fPIC"
			else 
				PICFLAGS="-KPIC"
			fi
			;;
		*aix*)
			BLDSHARED="true"
			LDSHFLAGS="-Wl,-bexpall,-bM:SRE,-bnoentry,-berok"
			DYNEXP="-Wl,-brtl,-bexpall"
			PICFLAGS="-O2"
			if test "${GCC}" != "yes"; then
				## for funky AIX compiler using strncpy()
				CFLAGS="$CFLAGS -D_LINUX_SOURCE_COMPAT -qmaxmem=32000"
			fi
			;;
		*hpux*)
			SHLIBEXT="sl"
			# Use special PIC flags for the native HP-UX compiler.
			if test $ac_cv_prog_cc_Ae = yes; then
				BLDSHARED="true"
				SHLD="/usr/bin/ld"
				LDSHFLAGS="-B symbolic -b -z"
				SONAMEFLAG="+h "
				PICFLAGS="+z"
			fi
			DYNEXP="-Wl,-E"
			;;
		*qnx*)
			;;
		*osf*)
			BLDSHARED="true"
			LDSHFLAGS="-shared"
			SONAMEFLAG="-Wl,-soname,"
			PICFLAGS="-fPIC"
			;;
		*sco*)
			;;
		*unixware*)
			BLDSHARED="true"
			LDSHFLAGS="-shared"
			SONAMEFLAG="-Wl,-soname,"
			PICFLAGS="-KPIC"
			;;
		*next2*)
			;;
		*dgux*) AC_CHECK_PROG( ROFF, groff, [groff -etpsR -Tascii -man])
			;;
		*sysv4*)
			case "$host" in
				*-univel-*)
					LDSHFLAGS="-G"
                             		DYNEXP="-Bexport"
				;;
				*mips-sni-sysv4*) 
				;;
			esac
			;;

		*sysv5*)
			LDSHFLAGS="-G"
			;;
		*vos*)
			BLDSHARED="false"
			LDSHFLAGS=""
			;;
		*darwin*)
			BLDSHARED="true"
			LDSHFLAGS="-bundle -flat_namespace -undefined suppress"
			SHLIBEXT="dylib"
			;;
		*)
			;;
  esac
  AC_SUBST(DYNEXP)
  AC_MSG_RESULT($BLDSHARED)
  AC_MSG_CHECKING([linker flags for shared libraries])
  AC_MSG_RESULT([$LDSHFLAGS])
  AC_MSG_CHECKING([compiler flags for position-independent code])
  AC_MSG_RESULT([$PICFLAGS])
fi

#######################################################
# test whether building a shared library actually works
if test $BLDSHARED = true; then
AC_CACHE_CHECK([whether building shared libraries actually works], 
               [ac_cv_shlib_works],[
   ac_cv_shlib_works=no
   # try building a trivial shared library
   if test "$PICSUFFIX" = "po"; then
     $CC $CPPFLAGS $CFLAGS $PICFLAGS -c -o shlib.po ${srcdir-.}/../../source/tests/shlib.c &&
       $CC $CPPFLAGS $CFLAGS `eval echo $LDSHFLAGS` -o "shlib.$SHLIBEXT" shlib.po &&
       ac_cv_shlib_works=yes
   else
     $CC $CPPFLAGS $CFLAGS $PICFLAGS -c -o shlib.$PICSUFFIX ${srcdir-.}/tests/shlib.c &&
       mv shlib.$PICSUFFIX shlib.po &&
       $CC $CPPFLAGS $CFLAGS `eval echo $LDSHFLAGS` -o "shlib.$SHLIBEXT" shlib.po &&
       ac_cv_shlib_works=yes
   fi
   rm -f "shlib.$SHLIBEXT" shlib.po
])
if test $ac_cv_shlib_works = no; then
   BLDSHARED=false
fi
fi




AC_OUTPUT(Makefile)
