#

# Copyright (c) 2011, 2015, 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.

#

# When you read this source. Remember that $(sort ...) has the side effect

# of removing duplicates. It is actually this side effect that is

# desired whenever sort is used below!

ifndef _NATIVE_COMPILATION_GMK

_NATIVE_COMPILATION_GMK := 1

ifeq (,$(_MAKEBASE_GMK))

  $(error You must include MakeBase.gmk prior to including NativeCompilation.gmk)

endif

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

# Create exported symbols file for static libraries

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

# get the exported symbols from mapfiles and if there

# is no mapfile, get them from the archive

define GetSymbols

  $(RM) $$(@D)/$$(basename $$(@F)).symbols; \

  if [ ! -z $$($1_MAPFILE) -a -e $$($1_MAPFILE) ]; then \

    $(ECHO) "Getting symbols from mapfile $$($1_MAPFILE)"; \

    $(AWK) '/global:/','/local:/' $$($1_MAPFILE) | \

        $(SED) -e 's/#.*//;s/global://;s/local://;s/\;//;s/^[ 	]*/_/;/^_$$$$/d' | \

        $(EGREP) -v "JNI_OnLoad|JNI_OnUnload|Agent_OnLoad|Agent_OnUnload|Agent_OnAttach" > \

        $$(@D)/$$(basename $$(@F)).symbols || true; \

    $(NM) $$($1_TARGET) | $(GREP)  " T " | \

        $(EGREP) "JNI_OnLoad|JNI_OnUnload|Agent_OnLoad|Agent_OnUnload|Agent_OnAttach" | \

        $(CUT) -d ' ' -f 3 >>  $$(@D)/$$(basename $$(@F)).symbols || true;\

  else \

    $(ECHO) "Getting symbols from nm"; \

    $(NM) -m $$($1_TARGET) | $(GREP)  "__TEXT" | \

        $(EGREP) -v "non-external|private extern|__TEXT,__eh_frame" | \

        $(SED) -e  's/.* //' > $$(@D)/$$(basename $$(@F)).symbols; \

  fi

endef

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

# Define a native toolchain configuration that can be used by

# SetupNativeCompilation calls

#

# Parameter 1 is the name of the toolchain definition

#

# Remaining parameters are named arguments:

#   EXTENDS - Optional parent definition to get defaults from

#   CC - The C compiler

#   CXX - The C++ compiler

#   LD - The Linker

#   AR - Static linker

#   AS - Assembler

#   MT - Windows MT tool

#   RC - Windows RC tool

#   STRIP - The tool to use for stripping debug symbols

#   SYSROOT_CFLAGS - Compiler flags for using the specific sysroot

#   SYSROOT_LDFLAGS - Linker flags for using the specific sysroot

DefineNativeToolchain = $(NamedParamsMacroTemplate)

define DefineNativeToolchainBody

  # If extending another definition, get default values from that,

  # otherwise, nothing more needs to be done as variable assignments

  # already happened in NamedParamsMacroTemplate.

  ifneq ($$($1_EXTENDS), )

    $$(call SetIfEmpty, $1_CC, $$($$($1_EXTENDS)_CC))

    $$(call SetIfEmpty, $1_CXX, $$($$($1_EXTENDS)_CXX))

    $$(call SetIfEmpty, $1_LD, $$($$($1_EXTENDS)_LD))

    $$(call SetIfEmpty, $1_AR, $$($$($1_EXTENDS)_AR))

    $$(call SetIfEmpty, $1_AS, $$($$($1_EXTENDS)_AS))

    $$(call SetIfEmpty, $1_MT, $$($$($1_EXTENDS)_MT))

    $$(call SetIfEmpty, $1_RC, $$($$($1_EXTENDS)_RC))

    $$(call SetIfEmpty, $1_STRIP, $$($$($1_EXTENDS)_STRIP))

    $$(call SetIfEmpty, $1_SYSROOT_CFLAGS, $$($$($1_EXTENDS)_SYSROOT_CFLAGS))

    $$(call SetIfEmpty, $1_SYSROOT_LDFLAGS, $$($$($1_EXTENDS)_SYSROOT_LDFLAGS))

  endif

endef

# Create a default toolchain with the main compiler and linker

$(eval $(call DefineNativeToolchain, TOOLCHAIN_DEFAULT, \

    CC := $(CC), \

    CXX := $(CXX), \

    LD := $(LD), \

    AR := $(AR), \

    AS := $(AS), \

    MT := $(MT), \

    RC := $(RC), \

    STRIP := $(STRIP), \

    SYSROOT_CFLAGS := $(SYSROOT_CFLAGS), \

    SYSROOT_LDFLAGS := $(SYSROOT_LDFLAGS), \

))

# Create a toolchain where linking is done with the C++ linker

$(eval $(call DefineNativeToolchain, TOOLCHAIN_LINK_CXX, \

    EXTENDS := TOOLCHAIN_DEFAULT, \

    LD := $(LDCXX), \

))

# Create a toolchain with the BUILD compiler, used for build tools that

# are to be run during the build.

# The BUILD_SYSROOT_*FLAGS variables are empty for now.

$(eval $(call DefineNativeToolchain, TOOLCHAIN_BUILD, \

    CC := $(BUILD_CC), \

    LD := $(BUILD_LD), \

    SYSROOT_CFLAGS := $(BUILD_SYSROOT_CFLAGS), \

    SYSROOT_LDFLAGS := $(BUILD_SYSROOT_LDFLAGS), \

))

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

# Extensions of files handled by this macro.

NATIVE_SOURCE_EXTENSIONS := %.s %.c %.cpp %.cc %.m %.mm

# Replaces native source extensions with the object file extension in a string.

# Param 1: the string containing source file names with extensions

# The surrounding strip is needed to keep additional whitespace out

define replace_with_obj_extension

$(strip \

  $(foreach extension, $(NATIVE_SOURCE_EXTENSIONS), \

      $(patsubst $(extension),%$(OBJ_SUFFIX),$(filter $(extension),$1))) \

)

endef

ifeq ($(OPENJDK_BUILD_OS_ENV), windows.cygwin)

  UNIX_PATH_PREFIX := /cygdrive

else ifeq ($(OPENJDK_BUILD_OS_ENV), windows.msys)

  UNIX_PATH_PREFIX :=

endif

# This pattern is used to transform the output of the microsoft CL compiler

# into a make syntax dependency file (.d)

WINDOWS_SHOWINCLUDE_SED_PATTERN := \

    -e '/^Note: including file:/!d' \

    -e 's|Note: including file: *||' \

    -e 's|\\|/|g' \

    -e 's|^\([a-zA-Z]\):|$(UNIX_PATH_PREFIX)/\1|g' \

    -e '\|$(TOPDIR)|I !d' \

    -e 's|$$$$| \\|g' \

    #

# This pattern is used to transform a dependency file (.d) to a list

# of make targets for dependent files (.d.targets)

DEPENDENCY_TARGET_SED_PATTERN := \

    -e 's/\#.*//' \

    -e 's/^[^:]*: *//' \

    -e 's/ *\\$$$$//' \

    -e 's/^[	 ]*//' \

    -e '/^$$$$/ d' \

    -e 's/$$$$/ :/' \

    #

define add_native_source

  # param 1 = BUILD_MYPACKAGE

  # parma 2 = the source file name (..../alfa.c or .../beta.cpp)

  # param 3 = the bin dir that stores all .o (.obj) and .d files.

  # param 4 = the c flags to the compiler

  # param 5 = the c compiler

  # param 6 = the c++ flags to the compiler

  # param 7 = the c++ compiler

  # param 8 = the flags to the assembler

  ifneq (,$$(filter %.c,$2))

    # Compile as a C file

    $1_$2_FLAGS=$(CFLAGS_CCACHE) $4 $$($1_$(notdir $2)_CFLAGS) -DTHIS_FILE='"$$(<F)"' -c

    $1_$2_COMP=$5

    $1_$2_DEP_FLAG:=$(C_FLAG_DEPS)

  else ifneq (,$$(filter %.m,$2))

    # Compile as an Objective-C file

    $1_$2_FLAGS=-x objective-c $(CFLAGS_CCACHE) $4 $$($1_$(notdir $2)_CFLAGS) -DTHIS_FILE='"$$(<F)"' -c

    $1_$2_COMP=$5

    $1_$2_DEP_FLAG:=$(C_FLAG_DEPS)

  else ifneq (,$$(filter %.s,$2))

    # Compile as assembler file

    $1_$2_FLAGS=$8 -DTHIS_FILE='"$$(<F)"'

    $1_$2_COMP=$(AS)

    $1_$2_DEP_FLAG:=

  else ifneq (,$$(filter %.cpp,$2)$$(filter %.cc,$2)$$(filter %.mm,$2))

    # Compile as a C++ or Objective-C++ file

    $1_$2_FLAGS=$(CFLAGS_CCACHE) $6 $$($1_$(notdir $2)_CXXFLAGS) -DTHIS_FILE='"$$(<F)"' -c

    $1_$2_COMP=$7

    $1_$2_DEP_FLAG:=$(CXX_FLAG_DEPS)

  else

    $$(error Internal error in NativeCompilation.gmk: no compiler for file $2)

  endif

  # Generate the .o (.obj) file name and place it in the bin dir.

  $1_$2_OBJ := $3/$$(call replace_with_obj_extension, $$(notdir $2))

  # Only continue if this object file hasn't been processed already. This lets the first found

  # source file override any other with the same name.

  ifeq (,$$(findstring $$($1_$2_OBJ),$$($1_ALL_OBJS)))

    $1_ALL_OBJS+=$$($1_$2_OBJ)

    ifeq (,$$(filter %.s,$2))

      # And this is the dependency file for this obj file.

      $1_$2_DEP:=$$(patsubst %$(OBJ_SUFFIX),%.d,$$($1_$2_OBJ))

      # The dependency target file lists all dependencies as empty targets

      # to avoid make error "No rule to make target" for removed files

      $1_$2_DEP_TARGETS:=$$(patsubst %$(OBJ_SUFFIX),%.d.targets,$$($1_$2_OBJ))

      # Include previously generated dependency information. (if it exists)

      -include $$($1_$2_DEP)

      -include $$($1_$2_DEP_TARGETS)

      ifeq ($(TOOLCHAIN_TYPE), microsoft)

        $1_$2_DEBUG_OUT_FLAGS:=-Fd$$(patsubst %$(OBJ_SUFFIX),%.pdb,$$($1_$2_OBJ)) \

            -Fm$$(patsubst %$(OBJ_SUFFIX),%.map,$$($1_$2_OBJ))

      endif

    endif

    $$($1_$2_OBJ) : $2 $$($1_COMPILE_VARDEPS_FILE) | $$($1_BUILD_INFO)

	$(ECHO) $(LOG_INFO) "Compiling $$(notdir $2) (for $$(notdir $$($1_TARGET)))"

        ifneq ($(TOOLCHAIN_TYPE), microsoft)

          ifeq ($(TOOLCHAIN_TYPE)$$(filter %.s,$2), solstudio)

            # The Solaris studio compiler doesn't output the full path to the object file in the

            # generated deps files. Fixing it with sed. If compiling assembly, don't try this.

	    $(call LogFailures, $$($1_$2_OBJ).log, $$($1_SAFE_NAME)_$$(notdir $2), \

	        $$($1_$2_COMP) $$($1_$2_FLAGS) $$($1_$2_DEP_FLAG) $$($1_$2_DEP).tmp $(CC_OUT_OPTION)$$($1_$2_OBJ) $2)

	    $(SED) 's|^$$(@F):|$$@:|' $$($1_$2_DEP).tmp > $$($1_$2_DEP)

          else

	    $(call LogFailures, $$($1_$2_OBJ).log, $$($1_SAFE_NAME)_$$(notdir $2), \

	        $$($1_$2_COMP) $$($1_$2_FLAGS) $$($1_$2_DEP_FLAG) $$($1_$2_DEP) $(CC_OUT_OPTION)$$($1_$2_OBJ) $2)

          endif

          # Create a dependency target file from the dependency file.

          # Solution suggested by http://make.mad-scientist.net/papers/advanced-auto-dependency-generation/

          ifneq ($$($1_$2_DEP),)

	    $(SED) $(DEPENDENCY_TARGET_SED_PATTERN) $$($1_$2_DEP) > $$($1_$2_DEP_TARGETS)

          endif

        else

          # The Visual Studio compiler lacks a feature for generating make dependencies, but by

          # setting -showIncludes, all included files are printed. These are filtered out and

          # parsed into make dependences.

          # Keep as much as possible on one execution line for best performance on Windows

	  ($(call LogFailures, $$($1_$2_OBJ).log, $$($1_SAFE_NAME)_$$(notdir $2), \

	      $$($1_$2_COMP) $$($1_$2_FLAGS) -showIncludes $$($1_$2_DEBUG_OUT_FLAGS) \

	          $(CC_OUT_OPTION)$$($1_$2_OBJ) $2) ; echo $$$$? > $$($1_$2_DEP).exitvalue) \

	      | $(TEE) $$($1_$2_DEP).raw | $(GREP) -v -e "^Note: including file:" \

	          -e "^$(notdir $2)$$$$" || test "$$$$?" = "1" ; \

	      exit `cat $$($1_$2_DEP).exitvalue` ; \

	  $(RM) $$($1_$2_DEP).exitvalue ; \\

	  ($(ECHO) $$@: \\ ; \

	  $(SED) $(WINDOWS_SHOWINCLUDE_SED_PATTERN) $$($1_$2_DEP).raw) | $(SORT) -u > $$($1_$2_DEP) ; \

	  $(SED) $(DEPENDENCY_TARGET_SED_PATTERN) $$($1_$2_DEP) > $$($1_$2_DEP_TARGETS)

        endif

  endif

endef

# Setup make rules for creating a native binary (a shared library or an

# executable).

#

# Parameter 1 is the name of the rule. This name is used as variable prefix,

# and the targets generated are listed in a variable by that name.

#

# Remaining parameters are named arguments. These include:

#   TOOLCHAIN Name of toolchain setup to use. Defaults to TOOLCHAIN_DEFAULT.

#   SRC one or more directory roots to scan for C/C++ files.

#   CFLAGS the compiler flags to be used, used both for C and C++.

#   CXXFLAGS the compiler flags to be used for c++, if set overrides CFLAGS.

#   LDFLAGS the linker flags to be used, used both for C and C++.

#   LIBS the libraries to link to

#   ARFLAGS the archiver flags to be used

#   OBJECT_DIR the directory where we store the object files

#   LIBRARY the resulting library file

#   PROGRAM the resulting exec file

#   INCLUDES only pick source from these directories

#   EXCLUDES do not pick source from these directories

#   INCLUDE_FILES only compile exactly these files!

#   EXCLUDE_FILES with these names

#   EXTRA_FILES List of extra files not in any of the SRC dirs

#   VERSIONINFO_RESOURCE Input file for RC. Setting this implies that RC will be run

#   RC_FLAGS flags for RC.

#   MAPFILE mapfile

#   REORDER reorder file

#   DEBUG_SYMBOLS add debug symbols (if configured on)

#   CC the compiler to use, default is $(CC)

#   LD the linker to use, default is $(LD)

#   OPTIMIZATION sets optimization level to NONE, LOW, HIGH, HIGHEST

#   DISABLED_WARNINGS_<toolchain> Disable the given warnings for the specified toolchain

#   STRIP_SYMBOLS Set to true to strip the final binary if the toolchain allows for it

#   STRIPFLAGS Optionally change the flags given to the strip command

SetupNativeCompilation = $(NamedParamsMacroTemplate)

define SetupNativeCompilationBody

  # If we're doing a static build and producing a library

  # force it to be a static library and remove the -l libraries

  ifeq ($(STATIC_BUILD), true)

    ifneq ($$($1_LIBRARY),)

      $1_STATIC_LIBRARY := $$($1_LIBRARY)

      $1_LIBRARY :=

    endif

  endif

  ifneq (,$$($1_BIN))

    $$(error BIN has been replaced with OBJECT_DIR)

  endif

  ifneq (,$$($1_LIB))

    $$(error LIB has been replaced with LIBRARY)

  endif

  ifneq (,$$($1_EXE))

    $$(error EXE has been replaced with PROGRAM)

  endif

  ifneq (,$$($1_LIBRARY))

    ifeq (,$$($1_OUTPUT_DIR))

      $$(error LIBRARY requires OUTPUT_DIR)

    endif

    ifneq ($$($1_LIBRARY),$(basename $$($1_LIBRARY)))

      $$(error directory of LIBRARY should be specified using OUTPUT_DIR)

    endif

    ifneq (,$(findstring $(SHARED_LIBRARY_SUFFIX),$$($1_LIBRARY)))

      $$(error LIBRARY should be specified without SHARED_LIBRARY_SUFFIX: $(SHARED_LIBRARY_SUFFIX))

    endif

    ifneq (,$(findstring $(LIBRARY_PREFIX),$$($1_LIBRARY)))

      $$(error LIBRARY should be specified without LIBRARY_PREFIX: $(LIBRARY_PREFIX))

    endif

    ifeq ($$($1_SUFFIX), )

      $1_SUFFIX := $(SHARED_LIBRARY_SUFFIX)

    endif

    $1_BASENAME:=$(LIBRARY_PREFIX)$$($1_LIBRARY)$$($1_SUFFIX)

    $1_TARGET:=$$($1_OUTPUT_DIR)/$$($1_BASENAME)

    $1_NOSUFFIX:=$(LIBRARY_PREFIX)$$($1_LIBRARY)

  endif

  ifneq (,$$($1_STATIC_LIBRARY))

    ifeq (,$$($1_OUTPUT_DIR))

      $$(error STATIC_LIBRARY requires OUTPUT_DIR)

    endif

    ifneq ($$($1_STATIC_LIBRARY),$(basename $$($1_STATIC_LIBRARY)))

      $$(error directory of STATIC_LIBRARY should be specified using OUTPUT_DIR)

    endif

    ifneq (,$(findstring $(STATIC_LIBRARY_SUFFIX),$$($1_STATIC_LIBRARY)))

      $$(error STATIC_LIBRARY should be specified without STATIC_LIBRARY_SUFFIX: $(STATIC_LIBRARY_SUFFIX))

    endif

    ifneq (,$(findstring $(LIBRARY_PREFIX),$$($1_STATIC_LIBRARY)))

      $$(error STATIC_LIBRARY should be specified without LIBRARY_PREFIX: $(LIBRARY_PREFIX))

    endif

    ifeq ($$($1_SUFFIX), )

      $1_SUFFIX := $(STATIC_LIBRARY_SUFFIX)

    endif

    $1_BASENAME:=$(LIBRARY_PREFIX)$$($1_STATIC_LIBRARY)$$($1_SUFFIX)

    $1_TARGET:=$$($1_OUTPUT_DIR)/$$($1_BASENAME)

    $1_NOSUFFIX:=$(LIBRARY_PREFIX)$$($1_STATIC_LIBRARY)

  endif

  ifneq (,$$($1_PROGRAM))

    ifeq (,$$($1_OUTPUT_DIR))

      $$(error PROGRAM requires OUTPUT_DIR)

    endif

    ifneq ($$($1_PROGRAM),$(basename $$($1_PROGRAM)))

      $$(error directory of PROGRAM should be specified using OUTPUT_DIR)

    endif

    ifneq (,$(findstring $(EXE_SUFFIX),$$($1_PROGRAM)))

      $$(error PROGRAM should be specified without EXE_SUFFIX: $(EXE_SUFFIX))

    endif

    ifeq ($$($1_SUFFIX), )

      $1_SUFFIX := $(EXE_SUFFIX)

    endif

    $1_BASENAME:=$$($1_PROGRAM)$$($1_SUFFIX)

    $1_TARGET:=$$($1_OUTPUT_DIR)/$$($1_BASENAME)

    $1_NOSUFFIX:=$$($1_PROGRAM)

  endif

  $1_SAFE_NAME := $$(strip $$(subst /,_, $1))

  ifeq (,$$($1_TARGET))

    $$(error Neither PROGRAM, LIBRARY nor STATIC_LIBRARY has been specified for SetupNativeCompilation)

  endif

  # Setup the toolchain to be used

  $$(call SetIfEmpty, $1_TOOLCHAIN, TOOLCHAIN_DEFAULT)

  $$(call SetIfEmpty, $1_CC, $$($$($1_TOOLCHAIN)_CC))

  $$(call SetIfEmpty, $1_CXX, $$($$($1_TOOLCHAIN)_CXX))

  $$(call SetIfEmpty, $1_LD, $$($$($1_TOOLCHAIN)_LD))

  $$(call SetIfEmpty, $1_AR, $$($$($1_TOOLCHAIN)_AR))

  $$(call SetIfEmpty, $1_AS, $$($$($1_TOOLCHAIN)_AS))

  $$(call SetIfEmpty, $1_MT, $$($$($1_TOOLCHAIN)_MT))

  $$(call SetIfEmpty, $1_RC, $$($$($1_TOOLCHAIN)_RC))

  $$(call SetIfEmpty, $1_STRIP, $$($$($1_TOOLCHAIN)_STRIP))

  $$(call SetIfEmpty, $1_SYSROOT_CFLAGS, $$($$($1_TOOLCHAIN)_SYSROOT_CFLAGS))

  $$(call SetIfEmpty, $1_SYSROOT_LDFLAGS, $$($$($1_TOOLCHAIN)_SYSROOT_LDFLAGS))

  ifneq ($$($1_MANIFEST), )

    ifeq ($$($1_MANIFEST_VERSION), )

      $$(error If MANIFEST is provided, then MANIFEST_VERSION is required in $1)

    endif

  endif

  # Make sure the dirs exist.

  $$(call MakeDir,$$($1_OBJECT_DIR) $$($1_OUTPUT_DIR))

  $$(foreach d,$$($1_SRC), $$(if $$(wildcard $$d),, \

      $$(error SRC specified to SetupNativeCompilation $1 contains missing directory $$d)))

  # Find all files in the source trees. Sort to remove duplicates.

  $1_ALL_SRCS := $$(sort $$(call CacheFind,$$($1_SRC)))

  # Extract the C/C++ files.

  $1_EXCLUDE_FILES:=$$(foreach i,$$($1_SRC),$$(addprefix $$i/,$$($1_EXCLUDE_FILES)))

  $1_INCLUDE_FILES:=$$(foreach i,$$($1_SRC),$$(addprefix $$i/,$$($1_INCLUDE_FILES)))

  ifneq ($$($1_EXCLUDE_FILES),)

    $1_EXCLUDE_FILES:=$$(addprefix %,$$($1_EXCLUDE_FILES))

  endif

  $1_SRCS := $$(filter-out $$($1_EXCLUDE_FILES),$$(filter $$(NATIVE_SOURCE_EXTENSIONS),$$($1_ALL_SRCS)))

  ifneq (,$$(strip $$($1_INCLUDE_FILES)))

    $1_SRCS := $$(filter $$($1_INCLUDE_FILES),$$($1_SRCS))

  endif

  ifeq (,$$($1_SRCS))

    $$(error No sources found for $1 when looking inside the dirs $$($1_SRC))

  endif

  # There can be only a single bin dir root, no need to foreach over the roots.

  $1_BINS := $$(wildcard $$($1_OBJECT_DIR)/*$(OBJ_SUFFIX))

  # Now we have a list of all c/c++ files to compile: $$($1_SRCS)

  # and we have a list of all existing object files: $$($1_BINS)

  # Prepend the source/bin path to the filter expressions. Then do the filtering.

  ifneq ($$($1_INCLUDES),)

    $1_SRC_INCLUDES := $$(foreach i,$$($1_SRC),$$(addprefix $$i/,$$(addsuffix /%,$$($1_INCLUDES))))

    $1_SRCS := $$(filter $$($1_SRC_INCLUDES),$$($1_SRCS))

  endif

  ifneq ($$($1_EXCLUDES),)

    $1_SRC_EXCLUDES := $$(addsuffix /%,$$($1_EXCLUDES))

    $1_SRC_EXCLUDES += $$(foreach i,$$($1_SRC),$$(addprefix $$i/,$$(addsuffix /%,$$($1_EXCLUDES))))

    $1_SRCS := $$(filter-out $$($1_SRC_EXCLUDES),$$($1_SRCS))

  endif

  $1_SRCS += $$($1_EXTRA_FILES)

  ifeq (,$$($1_SRCS))

    $$(error No sources found for $1 when looking inside the dirs $$($1_SRC))

  endif

  # Calculate the expected output from compiling the sources (sort to remove duplicates. Also provides

  # a reproducable order on the input files to the linker).

  $1_EXPECTED_OBJS_FILENAMES := $$(call replace_with_obj_extension, $$(notdir $$($1_SRCS)))

  $1_EXPECTED_OBJS:=$$(sort $$(addprefix $$($1_OBJECT_DIR)/,$$($1_EXPECTED_OBJS_FILENAMES)))

  # Are there too many object files on disk? Perhaps because some source file was removed?

  $1_SUPERFLOUS_OBJS:=$$(sort $$(filter-out $$($1_EXPECTED_OBJS),$$($1_BINS)))

  # Clean out the superfluous object files.

  ifneq ($$($1_SUPERFLUOUS_OBJS),)

    $$(shell $(RM) -f $$($1_SUPERFLUOUS_OBJS))

  endif

  # Pickup extra OPENJDK_TARGET_OS_TYPE and/or OPENJDK_TARGET_OS dependent variables for CFLAGS.

  $1_EXTRA_CFLAGS:=$$($1_CFLAGS_$(OPENJDK_TARGET_OS_TYPE)) $$($1_CFLAGS_$(OPENJDK_TARGET_OS))

  ifneq ($(DEBUG_LEVEL),release)

    # Pickup extra debug dependent variables for CFLAGS

    $1_EXTRA_CFLAGS+=$$($1_CFLAGS_debug)

    $1_EXTRA_CFLAGS+=$$($1_CFLAGS_$(OPENJDK_TARGET_OS_TYPE)_debug)

    $1_EXTRA_CFLAGS+=$$($1_CFLAGS_$(OPENJDK_TARGET_OS)_debug)

  else

    $1_EXTRA_CFLAGS+=$$($1_CFLAGS_release)

    $1_EXTRA_CFLAGS+=$$($1_CFLAGS_$(OPENJDK_TARGET_OS_TYPE)_release)

    $1_EXTRA_CFLAGS+=$$($1_CFLAGS_$(OPENJDK_TARGET_OS)_release)

  endif