dnl Modifications Copyright (C) 2004 by Etienne Gagnon.
dnl Modifications Copyright (C) 2004 by David Belanger.
dnl Modifications Copyright (C) 2004, 2005 by Grzegorz Prokopski.

dnl Used by aclocal to generate configure

dnl -----------------------------------------------------------
AC_DEFUN([CLASSPATH_FIND_JAVAC],
[
  user_specified_javac=

dnl  CLASSPATH_WITH_GCJ
  CLASSPATH_WITH_JIKES
dnl  CLASSPATH_WITH_KJC
  CLASSPATH_WITH_GCJX
  CLASSPATH_WITH_ECJ

  if test "x${user_specified_javac}" = x; then
    AM_CONDITIONAL(FOUND_GCJ, test "x${GCJ}" != x)
    AM_CONDITIONAL(FOUND_JIKES, test "x${JIKES}" != x)
    AM_CONDITIONAL(FOUND_ECJ, test "x${ECJ}" != x)
  else
    AM_CONDITIONAL(FOUND_GCJ, test "x${user_specified_javac}" = xgcj)
    AM_CONDITIONAL(FOUND_JIKES, test "x${user_specified_javac}" = xjikes)
    AM_CONDITIONAL(FOUND_ECJ, test "x${user_specified_javac}" = xecj)
  fi
  AM_CONDITIONAL(FOUND_KJC, test "x${user_specified_javac}" = xkjc)
  AM_CONDITIONAL(FOUND_GCJX, test "x${user_specified_javac}" = xgcjx)

  if test "x${GCJ}" = x && test "x${JIKES}" = x && test "x${user_specified_javac}" != xkjc && test "x${user_specified_javac}" != xgcjx; then
      # FIXME: use autoconf error function
      echo "configure: cannot find javac, try --with-gcj, --with-jikes, --with-kjc, or --with-gcjx" 1>&2
      exit 1    
  fi
])

dnl -----------------------------------------------------------
AC_DEFUN([CLASSPATH_WITH_GCJ],
[
  AC_ARG_WITH([gcj],
	      [AS_HELP_STRING(--with-gcj,bytecode compilation with gcj)],
  [
    if test "x${withval}" != x && test "x${withval}" != xyes && test "x${withval}" != xno; then
      CLASSPATH_CHECK_GCJ(${withval})
    else
      if test "x${withval}" != xno; then
        CLASSPATH_CHECK_GCJ
      fi
    fi
    user_specified_javac=gcj
  ],
  [
    CLASSPATH_CHECK_GCJ
  ])
  AC_SUBST(GCJ)
])

dnl -----------------------------------------------------------
AC_DEFUN([CLASSPATH_CHECK_GCJ],
[
  if test "x$1" != x; then
    if test -f "$1"; then
      GCJ="$1"
    else
      AC_PATH_PROG(GCJ, "$1")
    fi
  else
    AC_PATH_PROG(GCJ, "gcj")
  fi  
  dnl Test the given GCJ, but use it as C (!) compiler to check version
  if test "x$GCJ" != x; then
    AC_MSG_CHECKING([gcj version 4.0])
    AC_LANG_PUSH([C])
    AC_LANG_CONFTEST(
    [[#if __GNUC__ <= 3
    #error GCJ 4.0.0 or higher is required
    #endif
    ]])
    $GCJ -E conftest.c > /dev/null
    gcj_4_result=$?
    if test "x$gcj_4_result" = "x0"; then
      AC_MSG_RESULT([4.0 or higher found])
    else
      AC_MSG_WARN([4.0 or higher required])
    fi
    AC_LANG_POP
  fi 
])

dnl -----------------------------------------------------------
AC_DEFUN([CLASSPATH_WITH_JIKES],
[
  AC_ARG_WITH([jikes],
	      [AS_HELP_STRING(--with-jikes,bytecode compilation with jikes)],
  [
    if test "x${withval}" != x && test "x${withval}" != xyes && test "x${withval}" != xno; then
      CLASSPATH_CHECK_JIKES(${withval})
    else
      if test "x${withval}" != xno; then
        CLASSPATH_CHECK_JIKES
      fi
    fi
    user_specified_javac=jikes
  ],
  [ 
    CLASSPATH_CHECK_JIKES
  ])
  AC_SUBST(JIKES)
])

dnl -----------------------------------------------------------
AC_DEFUN([CLASSPATH_CHECK_JIKES],
[
  if test "x$1" != x; then
    if test -f "$1"; then
      JIKES="$1"
    else
      AC_PATH_PROG(JIKES, "$1")
    fi
  else
    AC_PATH_PROG(JIKES, "jikes")
  fi
  if test "x$JIKES" != "x"; then
    dnl Require at least version 1.19
    AC_MSG_CHECKING(jikes version)
    JIKES_VERSION=`$JIKES --version | awk '/^Jikes Compiler/' | cut -d ' ' -f 5`
    JIKES_VERSION_MAJOR=`echo "$JIKES_VERSION" | cut -d '.' -f 1`
    JIKES_VERSION_MINOR=`echo "$JIKES_VERSION" | cut -d '.' -f 2`
    if expr "$JIKES_VERSION_MAJOR" = 1 > /dev/null; then
      if expr "$JIKES_VERSION_MINOR" \< 19 > /dev/null; then
        JIKES=""
      fi
    fi
    if test "x$JIKES" != "x"; then
      AC_MSG_RESULT($JIKES_VERSION)
    else
      AC_MSG_WARN($JIKES_VERSION: jikes 1.19 or higher required)
    fi

    JIKESENCODING=
    if test -n "`$JIKES --help 2>&1 | grep encoding`"; then
       JIKESENCODING='-encoding UTF-8'
    fi
    AC_SUBST(JIKESENCODING)
  fi
])

dnl -----------------------------------------------------------
AC_DEFUN([CLASSPATH_WITH_KJC],
[
  AC_ARG_WITH([kjc], 
  	      [AS_HELP_STRING(--with-kjc,bytecode compilation with kjc)],
  [
    if test "x${withval}" != x && test "x${withval}" != xyes && test "x${withval}" != xno; then
      CLASSPATH_CHECK_KJC(${withval})
    else
      if test "x${withval}" != xno; then
        CLASSPATH_CHECK_KJC
      fi
    fi
    user_specified_javac=kjc
  ],
  [ 
    CLASSPATH_CHECK_KJC
  ])
  AC_SUBST(KJC)
])

dnl -----------------------------------------------------------
AC_DEFUN([CLASSPATH_CHECK_KJC],
[
  if test "x$1" != x; then
    if test -f "$1"; then
      KJC="$1"
    else
      AC_PATH_PROG(KJC, "$1")
    fi
  else
    AC_PATH_PROG(KJC, "kJC")
  fi
])

dnl -----------------------------------------------------------
AC_DEFUN([CLASSPATH_WITH_GCJX],
[
  AC_ARG_WITH([gcjx], 
  	      [AS_HELP_STRING(--with-gcjx,bytecode compilation with gcjx)],
  [
    if test "x${withval}" != x && test "x${withval}" != xyes && test "x${withval}" != xno; then
      CLASSPATH_CHECK_GCJX(${withval})
    else
      if test "x${withval}" != xno; then
        CLASSPATH_CHECK_GCJX
      fi
    fi
    user_specified_javac=gcjx
  ],
  [ 
    CLASSPATH_CHECK_GCJX
  ])
  AC_SUBST(GCJX)
])

dnl -----------------------------------------------------------
AC_DEFUN([CLASSPATH_CHECK_GCJX],
[
  if test "x$1" != x; then
    if test -f "$1"; then
      GCJX="$1"
    else
      AC_PATH_PROG(GCJX, "$1")
    fi
  else
    AC_PATH_PROG(GCJX, "gcjx")
  fi
])

dnl -----------------------------------------------------------
AC_DEFUN([CLASSPATH_WITH_JAVAH],
[
  AC_ARG_WITH([javah],
	      [AS_HELP_STRING(--with-javah,specify path or name of a javah-like program)],
  [
    if test "x${withval}" != x && test "x${withval}" != xyes && test "x${withval}" != xno; then
      CLASSPATH_CHECK_JAVAH(${withval})
    else
      CLASSPATH_CHECK_JAVAH
    fi
  ],
  [ 
    CLASSPATH_CHECK_JAVAH
  ])
  AM_CONDITIONAL(USER_SPECIFIED_JAVAH, test "x${USER_JAVAH}" != x)
  AC_SUBST(USER_JAVAH)
])

dnl -----------------------------------------------------------
dnl Checking for a javah like program 
dnl -----------------------------------------------------------
AC_DEFUN([CLASSPATH_CHECK_JAVAH],
[
  if test "x$1" != x; then
    if test -f "$1"; then
      USER_JAVAH="$1"
    else
      AC_PATH_PROG(USER_JAVAH, "$1")
    fi
  else
    for javah_name in gcjh javah; do
      AC_PATH_PROG(USER_JAVAH, "$javah_name")
      if test "x${USER_JAVAH}" != x; then
        break
      fi
    done
  fi
  
#  if test "x${USER_JAVAH}" = x; then
#    echo "configure: cannot find javah" 1>&2
#    exit 1
#  fi
])

dnl -----------------------------------------------------------
dnl CLASSPATH_WITH_CLASSLIB - checks for user specified classpath additions
dnl -----------------------------------------------------------
AC_DEFUN([CLASSPATH_WITH_CLASSLIB],
[
  AC_ARG_WITH([classpath],
	      [AS_HELP_STRING(--with-classpath,specify path to a classes.zip like file)],
  [
    if test "x${withval}" = xyes; then
      # set user classpath to CLASSPATH from env
      AC_MSG_CHECKING(for classlib)
      USER_CLASSLIB=${CLASSPATH}
      AC_SUBST(USER_CLASSLIB)
      AC_MSG_RESULT(${USER_CLASSLIB})
      conditional_with_classlib=true      
    elif test "x${withval}" != x && test "x${withval}" != xno; then
      # set user classpath to specified value
      AC_MSG_CHECKING(for classlib)
      USER_CLASSLIB=${withval}
      AC_SUBST(USER_CLASSLIB)
      AC_MSG_RESULT(${withval})
      conditional_with_classlib=true
    fi
  ],
  [ conditional_with_classlib=false ])
  AM_CONDITIONAL(USER_SPECIFIED_CLASSLIB, test "x${conditional_with_classlib}" = xtrue)

  AC_ARG_WITH([vm-classes],
	      [AS_HELP_STRING(--with-vm-classes,specify path to VM override source files)], [vm_classes="$with_vm_classes"],
	      [vm_classes='${top_srcdir}/vm/reference'])
  AC_SUBST(vm_classes)
])

dnl Note: this macro is NOT used by SableVM Classpath
dnl -----------------------------------------------------------
dnl CLASSPATH_WITH_GLIBJ - specify what to install
dnl -----------------------------------------------------------
AC_DEFUN([CLASSPATH_WITH_GLIBJ],
[
  AC_PATH_PROG(ZIP, zip)
  AC_ARG_WITH([glibj],
              [AS_HELP_STRING([--with-glibj],[define what to install (zip|flat|both|none|build) [default=zip]])],
              [
                if test "x${withval}" = xyes || test "x${withval}" = xzip; then
		  install_class_files=no
		  build_class_files=yes
		  use_zip=yes
		elif test "x${withval}" = xboth; then
		  install_class_files=yes
		  build_class_files=yes
		  use_zip=yes
		elif test "x${withval}" = xflat; then
		  install_class_files=yes
		  build_class_files=yes
		  use_zip=no
                elif test "x${withval}" = xno || test "x${withval}" = xnone; then
		  install_class_files=no
		  build_class_files=no
		  use_zip=no
		elif test "x${withval}" = xbuild; then
		  install_class_files=no
		  build_class_files=yes
		  use_zip=no
                else
		  AC_MSG_ERROR([unknown value given to --with-glibj])
                fi
	      ],
  	      [
		install_class_files=no
		use_zip=yes
	      ])
  AM_CONDITIONAL(INSTALL_GLIBJ_ZIP, test "x${use_zip}" = xyes)
  AM_CONDITIONAL(INSTALL_CLASS_FILES, test "x${install_class_files}" = xyes)
  AM_CONDITIONAL(BUILD_CLASS_FILES, test "x${build_class_files}" = xyes)

  AC_ARG_ENABLE([examples],
		[AS_HELP_STRING(--enable-examples,enable build of the examples [default=yes])],
		[case "${enableval}" in
		  yes) EXAMPLESDIR="examples" ;;
		  no) EXAMPLESDIR="" ;;
		  *) AC_MSG_ERROR(bad value ${enableval} for --enable-examples) ;;
		esac],
		[EXAMPLESDIR="examples"])
  if test "x${use_zip}" = xno && test "x${install_class_files}" = xno; then
    EXAMPLESDIR=""
  fi
  AC_SUBST(EXAMPLESDIR)
])

dnl -----------------------------------------------------------
dnl CLASSPATH_WITH_COMPRESSED_CLASSES - specify what to install
dnl -----------------------------------------------------------
AC_DEFUN([CLASSPATH_WITH_COMPRESSED_CLASSES],
[
  AC_ARG_WITH([compressed-classes],
              [AS_HELP_STRING([--with-compressed-classes],
		[define how to install the class library (storeonly[default]|fastjar|zip|none|no)])],
              [
	        FASTJAR_COMPRESSION_FLAGS=
		ZIP_COMPRESSION_FLAGS=
                if test "x${withval}" = xyes || test "x${withval}" = xstoreonly; then
	          FASTJAR_COMPRESSION_FLAGS="0"
		  ZIP_COMPRESSION_FLAGS="-0"
		  if test "x$JAR" = "x"; then
      		    AC_PATH_PROG(FASTJAR, fastjar)
		  else
		    FASTJAR="$JAR"
		  fi
		  if test "x${FASTJAR}" = x; then
		    AC_PATH_PROG(ZIP, zip)
		  fi
		  install_class_files=no
		elif test "x${withval}" = xzip; then
		  AC_PATH_PROG(ZIP, zip)
		  install_class_files=no
		elif test "x${withval}" = xflat; then
		  ZIP=
		  FASTJAR=
		  install_class_files=yes
                elif test "x${withval}" = xno; then
                  ZIP=
		  FASTJAR=
		  install_class_files=yes
                elif test "x${withval}" = xnone; then
                  ZIP=
		  FASTJAR=
		  install_class_files=no
                else
		  AC_MSG_ERROR([unknown value given to --with-compressed-classes])
                fi
	      ],
  	      [	FASTJAR_COMPRESSION_FLAGS="0"
	        ZIP_COMPRESSION_FLAGS="-0"
	        if test "x$JAR" = "x"; then
		  AC_PATH_PROG(FASTJAR, fastjar)
		else
		  FASTJAR="$JAR"
		fi
		if test "x${FASTJAR}" = x; then
		    AC_PATH_PROG(ZIP, zip)
		    if test "x${ZIP}" = x; then
			# if neither fastjar nor zip is found - install uncompressed
			install_class_files=yes
		    else
			install_class_files=no
		    fi
		else
		    install_class_files=no
		fi
	      ])
#  if test "x${FASTJAR}" = x && test "x${ZIP}" = x && test "x${install_class_files}" = xno; then
#    AC_MSG_ERROR([you need to either install class files or libclasspath.jar])
#  fi
  AC_ARG_ENABLE([examples],
		[AS_HELP_STRING(--enable-examples,enable build of the examples [default=yes])],
		[case "${enableval}" in
		  yes) EXAMPLESDIR="examples" ;;
		  no) EXAMPLESDIR="" ;;
		  *) AC_MSG_ERROR(bad value ${enableval} for --enable-examples) ;;
		esac],
		[EXAMPLESDIR="examples"])
  if test "x${ZIP}" = x && test "x${install_class_files}" = xno; then
    EXAMPLESDIR=""
  fi
  AM_CONDITIONAL(INSTALL_COMPRESSED_CLASS_FILES, test "x${ZIP}" != x || test "x${FASTJAR}" != x)
  AM_CONDITIONAL(INSTALL_CLASS_FILES, test "x${install_class_files}" = xyes)
  AC_SUBST(EXAMPLESDIR)
  AC_SUBST(FASTJAR_COMPRESSION_FLAGS)
  AC_SUBST(ZIP_COMPRESSION_FLAGS)
])

dnl -----------------------------------------------------------
dnl Enable generation of API documentation, with gjdoc if it
dnl has been compiled to an executable (or a suitable script
dnl is in your PATH) or using the argument as gjdoc executable.
dnl -----------------------------------------------------------
AC_DEFUN([CLASSPATH_WITH_GJDOC],
[
  AC_ARG_WITH([gjdoc],
              AS_HELP_STRING([--with-gjdoc],
			     [generate documentation using gjdoc (default is NO)]),
              [if test "x${withval}" = xno; then
	         WITH_GJDOC=no;
	       elif test "x${withval}" = xyes -o "x{withval}" = x; then
	         WITH_GJDOC=yes;
	         AC_PATH_PROG(GJDOC, gjdoc, "no")
		 if test "x${GJDOC}" = xno; then
		   AC_MSG_ERROR("gjdoc executable not found");
		 fi
	       else
	         WITH_GJDOC=yes
		 GJDOC="${withval}"
		 AC_CHECK_FILE(${GJDOC}, AC_SUBST(GJDOC),
		               AC_MSG_ERROR("Cannot use ${withval} as gjdoc executable since it doesn't exist"))
	       fi],
              [WITH_GJDOC=no])

  AM_CONDITIONAL(CREATE_API_DOCS, test "x${WITH_GJDOC}" = xyes)
])

dnl -----------------------------------------------------------
dnl Enable regeneration of parsers using jay
dnl http://www.informatik.uni-osnabrueck.de/alumni/bernd/jay/
dnl -----------------------------------------------------------
AC_DEFUN([REGEN_WITH_JAY],
[
  AC_ARG_WITH([jay],
              [AS_HELP_STRING(--with-jay,Regenerate the parsers with jay must be given the path to the jay executable)],
  [
    if test -d "${withval}"; then
      JAY_DIR_PATH="${withval}"
      AC_PATH_PROG(JAY, jay, "no", ${JAY_DIR_PATH})
      if test "x${JAY}" = xno; then
        AC_MSG_ERROR("jay executable not found");
      fi
    else
      JAY_DIR_PATH=$(dirname "${withval}")
      JAY="${withval}"
      AC_SUBST(JAY)
    fi
    JAY_SKELETON="${JAY_DIR_PATH}/skeleton"
    AC_CHECK_FILE(${JAY_SKELETON}, AC_SUBST(JAY_SKELETON),
	AC_MSG_ERROR("Expected skeleton file in $(dirname ${withval})"))
    JAY_FOUND=yes
  ],
  [
    JAY_FOUND=no
  ])
  AM_CONDITIONAL(REGEN_PARSERS, test "x${JAY_FOUND}" = xyes)
])

dnl -----------------------------------------------------------
AC_DEFUN([CLASSPATH_WITH_ECJ],
[
  AC_ARG_WITH([ecj],
	      [AS_HELP_STRING(--with-ecj,bytecode compilation with ecj)],
  [
    if test "x${withval}" != x && test "x${withval}" != xyes && test "x${withval}" != xno; then
      CLASSPATH_CHECK_ECJ(${withval})
    else
      if test "x${withval}" != xno; then
        CLASSPATH_CHECK_ECJ
      fi
    fi
    user_specified_javac=ecj
  ],
  [ 
    CLASSPATH_CHECK_ECJ
  ])
  AC_SUBST(ECJ)
])

dnl -----------------------------------------------------------
AC_DEFUN([CLASSPATH_CHECK_ECJ],
[
  if test "x$1" != x; then
    if test -f "$1"; then
      ECJ="$1"
    else
      AC_PATH_PROG(ECJ, "$1")
    fi
  else
    AC_PATH_PROG(ECJ, "ecj")
  fi
])