# 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.

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

# Also put verification offset file here as well.

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

GENSRC_X11WRAPPERS_DST := $(JDK_OUTPUTDIR)/gensrc/sun/awt/X11

# The pre-calculated offset file are stored here:

GENSRC_SIZER_DIR := $(JDK_TOPDIR)/src/solaris/classes/sun/awt/X11/generator

# Normal case is to generate only according to target bits

GENSRC_X11_VERSION := $(OPENJDK_TARGET_CPU_BITS)

  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

  ifeq ($(OPENJDK_TARGET_OS), solaris)

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

  GENSRC_X11_VERSION := 32 64

  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.

$(JDK_OUTPUTDIR)/gensrc/_the.generated.x11 : $(GENSRC_X11_SIZES_USED) $(BUILD_TOOLS)

	$(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.

    $(GENSRC_X11WRAPPERS_TMP)/sizer.%.c : $(GENSRC_SIZER_DIR)/xlibtypes.txt $(BUILD_TOOLS)

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

    # Compile the C code into an executable.

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

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

              -I$(JDK_TOPDIR)/src/share/native/common \

    .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

	$(GENSRC_X11WRAPPERS_TMP)/sizer.$*.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