#
# Copyright (c) 2011, 2012, 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!

ifeq  (,$(_MAKEBASE_GMK))
    $(error You must include MakeBase.gmk prior to including JavaCompilation.gmk)
endif

ifeq ($(COMPILER_TYPE),CC)
    COMPILING_MSG=echo Compiling $1
    LINKING_MSG=echo Linking $1
    LINKING_EXE_MSG=echo Linking executable $1
    ARCHIVING_MSG=echo Archiving $1
else
    COMPILING_MSG=
    LINKING_MSG=
    LINKING_EXE_MSG=
    ARCHIVING_MSG=
endif

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

    ifneq (,$$(filter %.c,$2))
        # Compile as a C file
        $1_$2_FLAGS=$4
        $1_$2_COMP=$5
    else
        # Compile as a C++ file
        $1_$2_FLAGS=$6
        $1_$2_COMP=$7
    endif
    # Generate the .o (.obj) file name and place it in the bin dir.
    $1_$2_OBJ:=$3/$$(patsubst %.cpp,%$(OBJ_SUFFIX),$$(patsubst %.c,%$(OBJ_SUFFIX),$$(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),$$($1_OBJS_SO_FAR)))
        $1_OBJS_SO_FAR+=$$($1_$2_OBJ)
        # And this is the dependency file for this obj file.
        $1_$2_DEP:=$$(patsubst %$(OBJ_SUFFIX),%.d,$$($1_$2_OBJ))
        # Include previously generated dependency information. (if it exists)
        -include $$($1_$2_DEP)

        ifeq ($(COMPILER_TYPE),CL)
            $1_$2_DEBUG_OUT_FLAGS:=-Fd$$(patsubst %$(OBJ_SUFFIX),%.pdb,$$($1_$2_OBJ)) \
				   -Fm$$(patsubst %$(OBJ_SUFFIX),%.map,$$($1_$2_OBJ))
        endif

        $$($1_$2_OBJ) : $2
        ifeq ($(COMPILER_TYPE),CC)
		$$(call COMPILING_MSG,$$(notdir $2))
		$$($1_$2_COMP) $$($1_$2_FLAGS) -MMD -MF $$($1_$2_DEP) -c $(CC_OUT_OPTION)$$($1_$2_OBJ) $2
        endif
        ifeq ($(COMPILER_TYPE),CL)
		$$(call COMPILING_MSG,$$(notdir $2))
		$$($1_$2_COMP) $$($1_$2_FLAGS) $$($1_$2_DEBUG_OUT_FLAGS) -c $(CC_OUT_OPTION)$$($1_$2_OBJ) $2
        endif
    endif
endef

define SetupNativeCompilation
    # param 1 is for example BUILD_MYPACKAGE
    # param 2,3,4,5,6,7,8 are named args.
    #    SRC one or more directory roots to scan for C/C++ files.
    #    LANG C or C++
    #    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++.
    #    LDFLAGS_SUFFIX the linker flags to be added last on the commandline
    #        typically the libraries linked to.
    #    ARFLAGS the archiver flags to be used
    #    BIN the directory where we store the object files
    #    LIB the resulting library file
    #    EXE 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
    #    VERSIONINFO_RESOURCE Input file for RC. Setting this implies that RC will be run
    #    RC_FLAGS flags for RC.
    $(if $2,$1_$(strip $2))
    $(if $3,$1_$(strip $3))
    $(if $4,$1_$(strip $4))
    $(if $5,$1_$(strip $5))
    $(if $6,$1_$(strip $6))
    $(if $7,$1_$(strip $7))
    $(if $8,$1_$(strip $8))
    $(if $9,$1_$(strip $9))
    $(if $(10),$1_$(strip $(10)))
    $(if $(11),$1_$(strip $(11)))
    $(if $(12),$1_$(strip $(12)))
    $(if $(13),$1_$(strip $(13)))
    $(if $(14),$1_$(strip $(14)))
    $(if $(15),$1_$(strip $(15)))
    $(if $(16),$1_$(strip $(16)))
    $(if $(17),$1_$(strip $(17)))
    $(if $(18),$1_$(strip $(18)))
    $(if $(19),$1_$(strip $(19)))
    $(if $(20),$1_$(strip $(20)))

    ifeq (,$$($1_LANG))
        $$(error You have to specify LANG for native compilation $1)
    endif
    ifeq (C,$$($1_LANG))
	$1_LD:=$(LD)
	$1_LDEXE:=$(LDEXE)
    else
       ifeq (C++,$$($1_LANG))
           $1_LD:=$(LDCXX)
	   $1_LDEXE:=$(LDEXECXX)
       else
           $$(error Unknown native language $$($1_LANG) for $1)
       endif
    endif

    # Make sure the dirs exist.
    $$(shell $(MKDIR) -p $$($1_SRC) $$($1_BIN) $$(dir $$($1_LIB)) $$(dir $$($1_EXE)))
    # Find all files in the source trees. Sort to remove duplicates.
    $1_ALL_SRCS := $$(sort $$(foreach i,$$($1_SRC), $$(shell $(FIND) $$i -type f)))
    # 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 %.c %.cpp,$$($1_ALL_SRCS)))
    ifneq (,$$(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 $$($1_BIN)/*$(OBJ_SUFFIX))
    # Now we have a list of all c/c++ files to compile: $$($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 ($$($1_EXCLUDES),)
        $1_SRC_EXCLUDES := $$(foreach i,$$($1_SRC),$$(addprefix $$i/,$$(addsuffix /%,$$($1_EXCLUDES))))
        $1_SRCS         := $$(filter-out $$($1_SRC_EXCLUDES),$$($1_SRCS))
    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:=$$(sort $$(addprefix $$($1_BIN)/,$$(patsubst %.cpp,%$(OBJ_SUFFIX),$$(patsubst %.c,%$(OBJ_SUFFIX),$$(notdir $$($1_SRCS))))))
    $1 := $$($1_EXPECTED_OBJS)
    # 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.
    $$(shell $(RM) -f $$($1_SUPERFLUOUS_OBJS))

    # Pickup extra HOST_OS_API and/or PLATFORM dependent variables for CFLAGS.
    $1_EXTRA_CFLAGS:=$$($1_CFLAGS_$(HOST_OS_API)) $$($1_CFLAGS_$(PLATFORM))
    ifneq ($(DEBUG_LEVEL),release)
        # Pickup extra debug dependent variables for CFLAGS
        $1_EXTRA_CFLAGS+=$$($1_CFLAGS_debug)
        $1_EXTRA_CFLAGS+=$$($1_CFLAGS_$(HOST_OS_API)_debug)
        $1_EXTRA_CFLAGS+=$$($1_CFLAGS_$(PLATFORM)_debug)
    else
        $1_EXTRA_CFLAGS+=$$($1_CFLAGS_release)
        $1_EXTRA_CFLAGS+=$$($1_CFLAGS_$(HOST_OS_API)_release)
        $1_EXTRA_CFLAGS+=$$($1_CFLAGS_$(PLATFORM)_release)
    endif

    # Pickup extra HOST_OS_API and/or PLATFORM dependent variables for CXXFLAGS.
    $1_EXTRA_CXXFLAGS:=$$($1_CXXFLAGS_$(HOST_OS_API)) $$($1_CXXFLAGS_$(PLATFORM))
    ifneq ($(DEBUG_LEVEL),release)
        # Pickup extra debug dependent variables for CXXFLAGS
        $1_EXTRA_CXXFLAGS+=$$($1_CXXFLAGS_debug)
        $1_EXTRA_CXXFLAGS+=$$($1_CXXFLAGS_$(HOST_OS_API)_debug)
        $1_EXTRA_CXXFLAGS+=$$($1_CXXFLAGS_$(PLATFORM)_debug)
    else
        $1_EXTRA_CXXFLAGS+=$$($1_CXXFLAGS_release)
        $1_EXTRA_CXXFLAGS+=$$($1_CXXFLAGS_$(HOST_OS_API)_release)
        $1_EXTRA_CXXFLAGS+=$$($1_CXXFLAGS_$(PLATFORM)_release)
    endif

    ifeq ($$($1_CXXFLAGS),)
        $1_CXXFLAGS:=$$($1_CFLAGS)
    endif
    ifeq ($$(strip $$($1_EXTRA_CXXFLAGS)),)
        $1_EXTRA_CXXFLAGS:=$$($1_EXTRA_CFLAGS)
    endif

    # Now create a list of the packages that are about to compile. Used when sending source
    # in a batch to the compiler.
    $$(shell $(RM) $$($1_BIN)/_the.list_of_sources)
    $$(eval $$(call ListPathsSafelyNow,$1_SRCS,\n, >> $$($1_BIN)/_the.list_of_sources))

    # Now call add_native_source for each source file we are going to compile.
    $$(foreach p,$$($1_SRCS),\
        $$(eval $$(call add_native_source,$1,$$p,$$($1_BIN),\
                        $$($1_CFLAGS) $$($1_EXTRA_CFLAGS),$(CC),\
			$$($1_CXXFLAGS) $$($1_EXTRA_CXXFLAGS),$(CXX))))

    # On windows we need to create a resource file
    ifeq ($(HOST_OS_API), winapi)
        ifneq (,$$($1_VERSIONINFO_RESOURCE))
            ifneq (,$$($1_LIB))
                ifeq (dynamic,$$(patsubst %$(SHARED_LIBRARY_SUFFIX),dynamic,$$($1_LIB)))
                    $1_RES:=$$(patsubst %$(SHARED_LIBRARY_SUFFIX),%.res,$$($1_LIB))
                else
                    $1_RES:=$$(patsubst %$(STATIC_LIBRARY_SUFFIX),%.res,$$($1_LIB))
                endif
            endif
            ifneq (,$$($1_EXE))
                $1_RES:=$$(patsubst %$(EXE_SUFFIX),%.res,$$($1_EXE))
            endif
            $$($1_RES): $$($1_VERSIONINFO_RESOURCE)
		$(RC) $$($1_RC_FLAGS) $(CC_OUT_OPTION)$$@ $$($1_VERSIONINFO_RESOURCE)
        endif
    endif

    # Pickup extra HOST_OS_API dependent variables (posix or winapi) and 
    # (linux,solaris,windows,bsd) for LDFLAGS and LDFLAGS_SUFFIX
    $1_EXTRA_LDFLAGS:=$$($1_LDFLAGS_$(HOST_OS_API)) $$($1_LDFLAGS_$(PLATFORM))
    $1_EXTRA_LDFLAGS_SUFFIX:=$$($1_LDFLAGS_SUFFIX_$(HOST_OS_API)) $$($1_LDFLAGS_SUFFIX_$(PLATFORM))
    ifneq (,$$($1_LIB))
        ifeq (dynamic,$$(patsubst %$(SHARED_LIBRARY_SUFFIX),dynamic,$$($1_LIB)))
            # Generating a dynamic library.
            $1_EXTRA_LDFLAGS+=$$(call SET_SHARED_LIBRARY_NAME,$$(notdir $$($1_LIB)))
            $$($1_LIB) : $$($1_EXPECTED_OBJS) $$($1_RES)
	    	$$(call LINKING_MSG,$$(notdir $$($1_LIB)))
		$$($1_LD) $$($1_LDFLAGS) $$($1_EXTRA_LDFLAGS) $(LD_OUT_OPTION)$$($1_LIB) \
			$$($1_EXPECTED_OBJS) $$($1_RES) $$($1_LDFLAGS_SUFFIX) $$($1_EXTRA_LDFLAGS_SUFFIX)
        else
            # Generating a static library, ie object file archive.
            $$($1_LIB) : $$($1_EXPECTED_OBJS) $$($1_RES)
	    	$$(call ARCHIVING_MSG,$$(notdir $$($1_LIB)))
		$(AR) $$($1_AR_FLAGS) $(AR_OUT_OPTION)$$($1_LIB) $$($1_EXPECTED_OBJS) \
			$$($1_RES) $$($1_LDFLAGS_SUFFIX) $$($1_EXTRA_LDFLAGS_SUFFIX)
       endif
    endif
    ifneq (,$$($1_EXE))
        # A executable binary has been specified, setup the target for it.
        $$($1_EXE) : $$($1_EXPECTED_OBJS) $$($1_RES)
	    	$$(call LINKING_EXE_MSG,$$(notdir $$($1_EXE)))
		$$($1_LDEXE) $$($1_LDFLAGS) $$($1_EXTRA_LDFLAGS) $(EXE_OUT_OPTION)$$($1_EXE) \
			$$($1_EXPECTED_OBJS) $$($1_RES) $$($1_LDFLAGS_SUFFIX) $$($1_EXTRA_LDFLAGS_SUFFIX)
    endif
endef