#

# Copyright (c) 2011, 2018, Oracle and/or its affiliates. All rights reserved.

# DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.

#

# This code is free software; you can redistribute it and/or modify it

# under the terms of the GNU General Public License version 2 only, as

# published by the Free Software Foundation.  Oracle designates this

# particular file as subject to the "Classpath" exception as provided

# by Oracle in the LICENSE file that accompanied this code.

#

# This code is distributed in the hope that it will be useful, but WITHOUT

# ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or

# FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License

# version 2 for more details (a copy is included in the LICENSE file that

# accompanied this code).

#

# You should have received a copy of the GNU General Public License version

# 2 along with this work; if not, write to the Free Software Foundation,

# Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.

#

# Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA

# or visit www.oracle.com if you need additional information or have any

# questions.

#

################################################################################

# Setup X11 Windows system

################################################################################

AC_DEFUN_ONCE([LIB_SETUP_X11],

[

  if test "x$NEEDS_LIB_X11" = xfalse; then

    if (test "x${with_x}" != x && test "x${with_x}" != xno); then

      AC_MSG_WARN([X11 is not used, so --with-x is ignored])

    fi

    X_CFLAGS=

    X_LIBS=

  else

    if test "x${with_x}" = xno; then

      AC_MSG_ERROR([It is not possible to disable the use of X11. Remove the --without-x option.])

    fi

    if test "x${with_x}" != x &&  test "x${with_x}" != xyes; then

      # The user has specified a X11 base directory. Use it for includes and

      # libraries, unless explicitly overridden.

      if test "x$x_includes" = xNONE; then

        x_includes="${with_x}/include"

      fi

      if test "x$x_libraries" = xNONE; then

        x_libraries="${with_x}/lib"

      fi

    else

      # Check if the user has specified sysroot, but not --with-x, --x-includes or --x-libraries.

      # Make a simple check for the libraries at the sysroot, and setup --x-includes and

      # --x-libraries for the sysroot, if that seems to be correct.

      if test "x$SYSROOT" != "x"; then

        if test "x$x_includes" = xNONE; then

          if test -f "$SYSROOT/usr/X11R6/include/X11/Xlib.h"; then

            x_includes="$SYSROOT/usr/X11R6/include"

          elif test -f "$SYSROOT/usr/include/X11/Xlib.h"; then

            x_includes="$SYSROOT/usr/include"

          fi

        fi

        if test "x$x_libraries" = xNONE; then

          if test -f "$SYSROOT/usr/X11R6/lib/libX11.so"; then

            x_libraries="$SYSROOT/usr/X11R6/lib"

          elif test -f "$SYSROOT/usr/lib64/libX11.so" && test "x$OPENJDK_TARGET_CPU_BITS" = x64; then

            x_libraries="$SYSROOT/usr/lib64"

          elif test -f "$SYSROOT/usr/lib/libX11.so"; then

            x_libraries="$SYSROOT/usr/lib"

          fi

        fi

      fi

    fi

    # Now let autoconf do it's magic

    AC_PATH_X

    AC_PATH_XTRA

    # AC_PATH_XTRA creates X_LIBS and sometimes adds -R flags. When cross compiling

    # this doesn't make sense so we remove it.

    if test "x$COMPILE_TYPE" = xcross; then

      X_LIBS=`$ECHO $X_LIBS | $SED 's/-R \{0,1\}[[^ ]]*//g'`

    fi

    if test "x$no_x" = xyes; then

      HELP_MSG_MISSING_DEPENDENCY([x11])

      AC_MSG_ERROR([Could not find X11 libraries. $HELP_MSG])

    fi

    if test "x$OPENJDK_TARGET_OS" = xsolaris; then

      OPENWIN_HOME="/usr/openwin"

      X_CFLAGS="-I$SYSROOT$OPENWIN_HOME/include -I$SYSROOT$OPENWIN_HOME/include/X11/extensions"

      X_LIBS="-L$SYSROOT$OPENWIN_HOME/lib$OPENJDK_TARGET_CPU_ISADIR \

          -R$OPENWIN_HOME/lib$OPENJDK_TARGET_CPU_ISADIR"

    fi

    AC_LANG_PUSH(C)

    OLD_CFLAGS="$CFLAGS"

    CFLAGS="$CFLAGS $SYSROOT_CFLAGS $X_CFLAGS"

    HEADERS_TO_CHECK="X11/extensions/shape.h X11/extensions/Xrender.h X11/extensions/XTest.h X11/Intrinsic.h"

    # There is no Xrandr extension on AIX

    if test "x$OPENJDK_TARGET_OS" = xaix; then

      X_CFLAGS="$X_CFLAGS -DNO_XRANDR"

    else

      HEADERS_TO_CHECK="$HEADERS_TO_CHECK X11/extensions/Xrandr.h"

    fi

    # Need to include Xlib.h and Xutil.h to avoid "present but cannot be compiled" warnings on Solaris 10

    AC_CHECK_HEADERS([$HEADERS_TO_CHECK],

        [X11_HEADERS_OK=yes],

        [X11_HEADERS_OK=no; break],

        [

          # include <X11/Xlib.h>

          # include <X11/Xutil.h>

        ]

    )

    if test "x$X11_HEADERS_OK" = xno; then

      HELP_MSG_MISSING_DEPENDENCY([x11])

      AC_MSG_ERROR([Could not find all X11 headers (shape.h Xrender.h Xrandr.h XTest.h Intrinsic.h). $HELP_MSG])

    fi

    # If XLinearGradient isn't available in Xrender.h, signal that it needs to be

    # defined in libawt_xawt.

    AC_MSG_CHECKING([if XlinearGradient is defined in Xrender.h])

    AC_COMPILE_IFELSE(

        [AC_LANG_PROGRAM([[#include <X11/extensions/Xrender.h>]],

            [[XLinearGradient x;]])],

        [AC_MSG_RESULT([yes])],

        [AC_MSG_RESULT([no])

         X_CFLAGS="$X_CFLAGS -DSOLARIS10_NO_XRENDER_STRUCTS"])

    CFLAGS="$OLD_CFLAGS"

    AC_LANG_POP(C)

  fi # NEEDS_LIB_X11

  AC_SUBST(X_CFLAGS)

  AC_SUBST(X_LIBS)

])