#

# Copyright (c) 2012, 2013, 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.

#

# This file is responsible for extracting the x11 native struct offsets to

# the xawt Java library. The tool needs to be run on the os/arch that

# will host the final jvm, thus the tool cannot be used when cross compiling.

# To enable cross compiling, the two versions of the generated offset file,

# sizes.32 and sizes.64 are committed into the source code repository.

# These are the ones used.

# However when not cross compiling, the offset generator tool is built and

# run, to verify that it still generates the same sizes.32 and sizes.64.

GENSRC_X11WRAPPERS :=

# Put temporary c-code and executable to calculate offsets here.

# Also put verification offset file here as well.

GENSRC_X11WRAPPERS_TMP := $(JDK_OUTPUTDIR)/gensrc_x11wrappers

# Put the generated Java classes used to interface X11 from awt here.

# The pre-calculated offset file are stored here:

GENSRC_SIZER_DIR := $(JDK_TOPDIR)/make/data/x11wrappergen

# Normal case is to generate only according to target bits

GENSRC_X11_VERSION := $(OPENJDK_TARGET_CPU_BITS)

ifeq ($(OPENJDK_TARGET_CPU_BITS), 64)

  ifneq ($(OPENJDK_TARGET_OS), linux)

    # On all 64-bit systems except Linux, generate both 32 and 64 bit versions

    GENSRC_X11_VERSION := 32 64

  endif

else

  ifeq ($(OPENJDK_TARGET_OS), solaris)

    # As a special case, solaris 32-bit also generates the 64-bit version

    GENSRC_X11_VERSION := 32 64

  endif

endif

GENSRC_X11_SIZES_USED := $(addprefix $(GENSRC_X11WRAPPERS_TMP)/sizes., $(GENSRC_X11_VERSION))

# Copy only the sizes.* files that are actually needed. WrapperGenerator picks up any it finds from the

# file prefix it is given so those not needed need to be hidden.

$(GENSRC_X11WRAPPERS_TMP)/sizes.%: $(GENSRC_SIZER_DIR)/sizes.%

	$(MKDIR) -p $(@D)

	$(RM) '$@'

	$(SORT) $< > $@

# Run the tool on the offset files copied from the source repository to generate several Java classes

# used in awt.

	$(MKDIR) -p $(GENSRC_X11WRAPPERS_DST)

	$(TOOL_WRAPPERGENERATOR) $(GENSRC_X11WRAPPERS_DST) $(GENSRC_SIZER_DIR)/xlibtypes.txt "gen" $(GENSRC_X11WRAPPERS_TMP)/sizes

	$(TOUCH) $@

GENSRC_X11WRAPPERS += $(JDK_OUTPUTDIR)/gensrc/_the.generated.x11

ifneq ($(COMPILE_TYPE), cross)

  # This is not a cross compile, regenerate the offset file, so that we

  # can compare it with the version in the source code repository.

  # Generate the C code for the program that will output the offset file.

	$(ECHO) "Generating X11 wrapper ($*-bit version)"

	$(MKDIR) -p $(@D)

	$(TOOL_WRAPPERGENERATOR) $(@D) $(GENSRC_SIZER_DIR)/xlibtypes.txt "sizer" $*

  # use -m32/-m64 only if the compiler supports it

  ifeq ($(COMPILER_SUPPORTS_TARGET_BITS_FLAG), true)

    MEMORY_MODEL_FLAG="$(COMPILER_TARGET_BITS_FLAG)$*"

  endif

  # Compile the C code into an executable.

  $(GENSRC_X11WRAPPERS_TMP)/sizer.%.exe: $(GENSRC_X11WRAPPERS_TMP)/sizer.%.c

	$(MKDIR) -p $(@D)

	(cd $(@D) && $(CC) $(MEMORY_MODEL_FLAG) -o $@ $< \

	    $(X_CFLAGS) \

	    $(X_LIBS) \

  .PRECIOUS: $(GENSRC_X11WRAPPERS_TMP)/sizer.%.exe $(GENSRC_X11WRAPPERS_TMP)/sizer.%.c

  # Run the executable create the offset file and check that it is identical

  # to the offset file in the source code repository.

  $(GENSRC_X11WRAPPERS_TMP)/sizes.%.verification: $(GENSRC_X11WRAPPERS_TMP)/sizer.%.exe

	$(MKDIR) -p $(@D)

	$(GENSRC_X11WRAPPERS_TMP)/sizer.$*.exe | $(SORT) > $@.tmp

	$(ECHO) Verifying $(GENSRC_X11WRAPPERS_TMP)/sizes.$*.verification.tmp to $(GENSRC_X11WRAPPERS_TMP)/sizes.$*

	$(DIFF) $(GENSRC_X11WRAPPERS_TMP)/sizes.$*.verification.tmp $(GENSRC_X11WRAPPERS_TMP)/sizes.$*

	mv $@.tmp $@

  GENSRC_X11WRAPPERS += $(GENSRC_X11WRAPPERS_TMP)/sizes.$(OPENJDK_TARGET_CPU_BITS).verification

endif