###############################################################################
#
# macros and functions
#
###############################################################################

#######################################
# FUNCTION set_output_directory
#######################################
function(set_output_directory target dir)
    set(out ${output_dir})
    if (MSVC OR XCODE) # multiconfiguration builds
        set(out ${CMAKE_RUNTIME_OUTPUT_DIRECTORY})
    endif()
    if ("${ARGV2}" STREQUAL "FORCE")
        if (MSVC OR XCODE)
            set(out ${dir})
            set(dir)
        else()
            set(out .)
        endif()
    endif()
    if (MSVC OR XCODE)
        foreach(conf ${CMAKE_CONFIGURATION_TYPES})
            string(TOUPPER ${conf} conf2)
            set_target_properties(${target} PROPERTIES LIBRARY_OUTPUT_DIRECTORY_${conf2} ${out}/${conf}/${dir})
            set_target_properties(${target} PROPERTIES RUNTIME_OUTPUT_DIRECTORY_${conf2} ${out}/${conf}/${dir})
        endforeach()
    else() # single configuration
        execute_process(COMMAND ${CMAKE_COMMAND} -E make_directory ${out}/${dir})
        set_target_properties(${target} PROPERTIES LIBRARY_OUTPUT_DIRECTORY ${out}/${dir})
        set_target_properties(${target} PROPERTIES RUNTIME_OUTPUT_DIRECTORY ${out}/${dir})
    endif()
endfunction(set_output_directory)

#######################################
# FUNCTION set_output_directory_unix
#######################################
function(set_output_directory_unix target dir)
    if (UNIX)
        set_output_directory(${target} ${dir} ${ARGN})
    endif()
endfunction(set_output_directory_unix)

#######################################
# FUNCTION set_exported_symbols
#######################################
if (WIN32)
    function(set_exported_symbols target filename)
        set(def_file ${filename}.def)
        if ("${filename}" STREQUAL "empty")
            set(def_file)
        elseif("${filename}" STREQUAL "fbplugin")
            set(def_file "plugin.def")
        endif()
        if (NOT "${def_file}" STREQUAL "")
            if (MSVC)
                set_target_properties(${target} PROPERTIES LINK_FLAGS "/DEF:\"${CMAKE_SOURCE_DIR}/builds/win32/defs/${def_file}\"")
            endif()
            if (MINGW)
                #set_target_properties(${target} PROPERTIES LINK_FLAGS "-Wl,${CMAKE_SOURCE_DIR}/builds/win32/defs/${def_file}")
            endif()
        endif()
    endfunction(set_exported_symbols)
endif()

if (UNIX)
    function(set_exported_symbols target filename)
        set(def_file ${filename}.vers)
        if ("${filename}" STREQUAL "ib_udf")
            set(def_file)
        endif()
        if (NOT "${def_file}" STREQUAL "")
            set(wl_option "--version-script")
            if (APPLE)
                set(wl_option "-exported_symbols_list")
            endif()
            set_target_properties(${target} PROPERTIES LINK_FLAGS -Wl,${wl_option},${CMAKE_BINARY_DIR}/builds/posix/${def_file})
        endif()
    endfunction(set_exported_symbols)
endif(UNIX)


#######################################
# FUNCTION epp_process
#######################################
function(epp_process type files)
    set(epp_suffix ".${type}.cpp")

    foreach(F ${${files}})
        set(in  ${CMAKE_CURRENT_SOURCE_DIR}/${F})
        set(out ${CMAKE_CURRENT_BINARY_DIR}/${F}${epp_suffix})
        
        get_filename_component(dir ${out} PATH)
        
        if ("${type}" STREQUAL "boot")
            add_custom_command(
                OUTPUT ${out}
                DEPENDS gpre_boot ${in}
                COMMENT "Calling GPRE boot for ${F}"
                COMMAND ${CMAKE_COMMAND} -E make_directory ${dir}
                COMMAND ${ARGN} ${in} ${out}
            )
        elseif ("${type}" STREQUAL "master")
            get_filename_component(file ${out} NAME)
            set(dir ${dir}/${file}.d)                        
            add_custom_command(
                OUTPUT ${out}
                DEPENDS ${in} databases
                COMMENT "Calling GPRE master for ${F}"
                COMMAND ${CMAKE_COMMAND} -E make_directory ${dir}
                COMMAND ${CMAKE_COMMAND} -E copy_if_different metadata.fdb ${dir}/yachts.lnk
                COMMAND ${CMAKE_COMMAND} -E copy_if_different security.fdb ${dir}/security.fdb
                COMMAND ${CMAKE_COMMAND} -E copy_if_different msg.fdb ${dir}/msg.fdb
                COMMAND ${CMAKE_COMMAND} -E copy_if_different help.fdb ${dir}/help.fdb
                COMMAND ${ARGN} -b ${dir}/ ${in} ${out}
            )
        endif()
    endforeach()
endfunction(epp_process)

#######################################
# FUNCTION add_epp_suffix
#######################################
function(add_epp_suffix files suffix)
    foreach(F ${${files}})
        list(APPEND ${files}_${suffix} ${CMAKE_CURRENT_SOURCE_DIR}/${F})
        list(APPEND ${files}_${suffix} ${GENERATED_DIR}/${F}.${suffix}.cpp)
    endforeach()
    set_source_files_properties(${${files}_${suffix}} PROPERTIES GENERATED TRUE)
    set(${files}_${suffix} ${${files}_${suffix}} PARENT_SCOPE)
endfunction(add_epp_suffix)

#######################################
# FUNCTION set_win32
#######################################
function(set_win32 var)
    if (WIN32)
        set(${var} "${ARGN}" PARENT_SCOPE)
    endif()
endfunction(set_win32)

#######################################
# FUNCTION set_unix
#######################################
function(set_unix var)
    if (UNIX)
        set(${var} "${ARGN}" PARENT_SCOPE)
    endif()
endfunction(set_unix)

#######################################
# FUNCTION set_apple
#######################################
function(set_apple var)
    if (APPLE)
        set(${var} "${ARGN}" PARENT_SCOPE)
    endif()
endfunction(set_apple)

#######################################
# FUNCTION add_src_win32
#######################################
function(add_src_win32 var)
    if (WIN32)
        set(${var} ${${var}} ${ARGN} PARENT_SCOPE)
    endif()
endfunction(add_src_win32)

#######################################
# FUNCTION add_src_unix
#######################################
function(add_src_unix var)
    if (UNIX)
        set(${var} ${${var}} ${ARGN} PARENT_SCOPE)
    endif()
endfunction(add_src_unix)

#######################################
# FUNCTION add_src_unix_not_apple
#######################################
function(add_src_unix_not_apple var)
    if (UNIX AND NOT APPLE)
        set(${var} ${${var}} ${ARGN} PARENT_SCOPE)
    endif()
endfunction(add_src_unix_not_apple)

#######################################
# FUNCTION add_src_apple
#######################################
function(add_src_apple var)
    if (APPLE)
        set(${var} ${${var}} ${ARGN} PARENT_SCOPE)
    endif()
endfunction(add_src_apple)

#######################################
# FUNCTION copy_and_rename_lib
#######################################
function(copy_and_rename_lib target name)
    set(name2 $<TARGET_FILE_DIR:${target}>/${CMAKE_SHARED_LIBRARY_PREFIX}${name}${CMAKE_SHARED_LIBRARY_SUFFIX})
    add_custom_command(
        TARGET ${target}
        POST_BUILD
        COMMAND ${CMAKE_COMMAND} -E copy_if_different $<TARGET_FILE:${target}> ${name2}
    )
endfunction(copy_and_rename_lib)

#######################################
# FUNCTION project_group
#######################################
function(project_group target name)
    set_target_properties(${target} PROPERTIES FOLDER ${name})
endfunction(project_group)

#######################################
# FUNCTION set_generated_directory
#######################################
function(set_generated_directory)    
    if (NOT CMAKE_CROSSCOMPILING)
        set(GENERATED_DIR ${CMAKE_CURRENT_BINARY_DIR} PARENT_SCOPE)
    else()
        string(REPLACE "${CMAKE_BINARY_DIR}" "${NATIVE_BUILD_DIR}" GENERATED_DIR ${CMAKE_CURRENT_BINARY_DIR})
        set(GENERATED_DIR ${GENERATED_DIR} PARENT_SCOPE)
    endif()
endfunction(set_generated_directory)

#######################################
# FUNCTION add_dependencies_cc (cross compile)
#######################################
function(add_dependencies_cc target)    
    if (NOT CMAKE_CROSSCOMPILING)
        add_dependencies(${target} ${ARGN})
    endif()
endfunction(add_dependencies_cc)

#######################################
# FUNCTION add_dependencies_unix_cc (cross compile)
#######################################
function(add_dependencies_unix_cc target)    
    if (UNIX)
        add_dependencies_cc(${target} ${ARGN})
    endif()
endfunction(add_dependencies_unix_cc)

#######################################
# FUNCTION crosscompile_prebuild_steps
#######################################
function(crosscompile_prebuild_steps)    
    if (CMAKE_CROSSCOMPILING)
        execute_process(COMMAND ${CMAKE_COMMAND} -E copy_if_different ${NATIVE_BUILD_DIR}/src/include/gen/parse.h ${CMAKE_BINARY_DIR}/src/include/gen/parse.h)
    endif()
endfunction(crosscompile_prebuild_steps)

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