]> git.saurik.com Git - apple/icu.git/blobdiff - makefile
ICU-511.34.tar.gz
[apple/icu.git] / makefile
index 7f5b33dbd3d53da25364b07d92d6bd53098419da..07284825ea421a6a98581657a29149f088fd8380 100644 (file)
--- a/makefile
+++ b/makefile
@@ -1,11 +1,43 @@
 ##
 # Wrapper makefile for ICU
-# Copyright (C) 2003-2009 Apple Inc. All rights reserved.
+# Copyright (C) 2003-2013 Apple Inc. All rights reserved.
 #
 # See http://www.gnu.org/manual/make/html_chapter/make_toc.html#SEC_Contents
 # for documentation on makefiles. Most of this was culled from the ncurses makefile.
 #
-##
+#################################
+# Notes on building for AAS using Windows (7) + Visual Studio (2010) + Cygwin:
+#
+# Either this should be run indirectly from the VS command prompt via the
+# BuildICUForAAS script or project, using the instructions there (which build
+# both 32-bit and 64-bit), or it should be run from within Cygwin using the
+# following instructions or equivalent (different steps for 32-bit or 64-bit):
+#
+# 1. From VS command prompt, run vcvarsall.bat to set various environment variables.
+#    For a 32-bit build:
+#    > "C:\Program Files (x86)\Microsoft Visual Studio 10.0\VC\vcvarsall.bat" x86
+#    For a 64-bit build:
+#    > "C:\Program Files (x86)\Microsoft Visual Studio 10.0\VC\vcvarsall.bat" amd64
+#
+# 2. Launch Cygwin, e.g.
+#    > C:\cygwin\Cygwin.bat
+#
+# 3. Within cygwin, cd to the top level of the ICU sources directory, e.g.
+#    $ cd ICU
+#
+# 4. Adjust the PATH to put the appropriate VC tools directory first:
+#    For a 32-bit build:
+#    $ export PATH="/cygdrive/c/Program Files (x86)/Microsoft Visual Studio 10.0/VC/bin/":$PATH
+#    For a 64-bit build:
+#    $ export PATH="/cygdrive/c/Program Files (x86)/Microsoft Visual Studio 10.0/VC/bin/amd64/":$PATH
+#
+# 5. Run the ICU makefile
+#    For a 32-bit build:
+#    make [install] WINDOWS=YES [ARCH64=NO] [DSTROOT=...]
+#    For a 64-bit build:
+#    make [install] WINDOWS=YES ARCH64=YES [DSTROOT=...]
+#
+#################################
 
 #################################
 #################################
 # when used. This is in contrast to using '=' which denotes a
 # recursively expanded variable.
 
-SHELL := /bin/sh
-
 # Sane defaults, which are typically overridden on the command line.
 WINDOWS=NO
-SRCROOT=$(shell pwd)
-OBJROOT=$(SRCROOT)/build
-DSTROOT=$(OBJROOT)
-SYMROOT=$(OBJROOT)
+LINUX=NO
+ARCH64=NO
+
+# chicken and egg problem: we can't use cygpath until PATH & SHELL are set,
+# but we have to convert VS100VCTOOLS_PATH in order to set PATH. So instead we
+# convert using subst.
+ifeq "$(WINDOWS)" "YES"
+       ifneq "$(VS100VCTOOLS_PATH)" ""
+               VS100VCTOOLS_CYGPATH:= /cygdrive/$(subst :/,/,$(subst \,/,$(VS100VCTOOLS_PATH)))
+               PATH:=$(VS100VCTOOLS_CYGPATH):/usr/local/bin/:/usr/bin/:$(PATH)
+       endif
+endif
+$(info # PATH=$(PATH))
+
+# For some reason, cygwin bash (at least when run non-login) needs to use
+# bash for pwd, echo etc. (but uname does not work, see below)
+ifeq "$(WINDOWS)" "YES"
+       SHELL := /bin/bash
+else
+       SHELL := /bin/sh
+endif
+
+# if building for windows from batch script, convert Win-style paths
+# for SRCROOT etc. to cygwin-style paths. Don't define them if not
+# already defined.
+ifeq "$(WINDOWS)" "YES"
+       ifneq "$(VS100VCTOOLS_PATH)" ""
+               ifdef SRCROOT
+                       SRCROOT:=$(shell /bin/cygpath -ua $(subst \,/,$(SRCROOT)))
+               endif
+               ifdef OBJROOT
+                       OBJROOT:=$(shell /bin/cygpath -ua $(subst \,/,$(OBJROOT)))
+               endif
+               ifdef DSTROOT
+                       DSTROOT:=$(shell /bin/cygpath -ua $(subst \,/,$(DSTROOT)))
+               endif
+               ifdef SYMROOT
+                       SYMROOT:=$(shell /bin/cygpath -ua $(subst \,/,$(SYMROOT)))
+               endif
+       endif
+endif
+
+ifndef SRCROOT
+       SRCROOT:=$(shell pwd)
+endif
+ifndef OBJROOT
+       OBJROOT:=$(SRCROOT)/build
+endif
+ifndef DSTROOT
+       DSTROOT:=$(OBJROOT)
+endif
+ifndef SYMROOT
+       SYMROOT:=$(OBJROOT)
+endif
+
+ifeq "$(WINDOWS)" "YES"
+       ifeq "$(ARCH64)" "YES"
+               OBJROOT_CURRENT=$(OBJROOT)/obj64
+               SYMROOT_CURRENT=$(SYMROOT)/obj64
+       else
+               OBJROOT_CURRENT=$(OBJROOT)/obj32
+               SYMROOT_CURRENT=$(SYMROOT)/obj32
+       endif
+else ifeq "$(LINUX)" "YES"
+       ifeq "$(ARCH64)" "YES"
+               OBJROOT_CURRENT=$(OBJROOT)/obj64
+               SYMROOT_CURRENT=$(SYMROOT)/obj64
+       else
+               OBJROOT_CURRENT=$(OBJROOT)/obj32
+               SYMROOT_CURRENT=$(SYMROOT)/obj32
+       endif
+else
+       OBJROOT_CURRENT=$(OBJROOT)
+       SYMROOT_CURRENT=$(SYMROOT)
+endif
+CROSSHOST_OBJROOT=$(OBJROOT)/crossbuildhost
 APPLE_INTERNAL_DIR=/AppleInternal
 RC_ARCHS=
-DISABLE_DRAFT=NO
+MAC_OS_X_VERSION_MIN_REQUIRED=1070
+OSX_HOST_VERSION_MIN_STRING=10.7
+IOS_VERSION_TARGET_STRING=7.0
+OSX_VERSION_TARGET_STRING=10.9
 
-ifeq "$(DISABLE_DRAFT)" "YES"
-       DRAFT_FLAG=--disable-draft
+$(info # SRCROOT=$(SRCROOT))
+$(info # DSTROOT=$(DSTROOT))
+$(info # OBJROOT=$(OBJROOT))
+
+# For some reason, under cygwin, bash uname is not found, and
+# sh uname does not produce a result with -p or -m. So we just
+# hardcode here.
+ifeq "$(WINDOWS)" "YES"
+       UNAME_PROCESSOR:=i386
 else
-       DRAFT_FLAG=
+       UNAME_PROCESSOR:=$(shell uname -p)
 endif
+ifeq "$(SDKROOT)" "/"
+       SDKROOTMOD=
+else
+       SDKROOTMOD=$(SDKROOT)
+endif
+ifneq "$(RC_ARCHS)" ""
+       ifneq "$(SDKROOTMOD)" ""
+               CROSS_BUILD=YES
+       else ifeq "$(RC_INDIGO)" "YES"
+               CROSS_BUILD=YES
+       else
+               CROSS_BUILD=NO
+       endif
+       INSTALLHDRS_ARCH=-arch $(shell echo $(RC_ARCHS) | cut -d' ' -f1)
+else
+       CROSS_BUILD=NO
+       INSTALLHDRS_ARCH=
+endif
+$(info # RC_ARCHS=$(RC_ARCHS))
+$(info # INSTALLHDRS_ARCH=$(INSTALLHDRS_ARCH))
+$(info # buildhost=$(UNAME_PROCESSOR))
 
-ifeq "$(filter arm armv6,$(RC_ARCHS))" ""
-       THUMB_FLAG =
+# FORCEENDIAN below is to override silly configure behavior in which if
+# __APPLE_CC__ is defined and archs are in { ppc, ppc64, i386, x86_64 }
+# then it assumes a universal build (ac_cv_c_bigendian=universal) with
+# data file initially built big-endian.
+#
+ifeq "$(CROSS_BUILD)" "YES"
+       RC_ARCHS_FIRST=$(shell echo $(RC_ARCHS) | cut -d' ' -f1)
+       TARGET_SPEC=$(RC_ARCHS_FIRST)-apple-darwin10.0.0
+       ENV_CONFIGURE_ARCHS=-arch $(RC_ARCHS_FIRST)
+       ICUPKGTOOLIBS="$(CROSSHOST_OBJROOT)/lib:$(CROSSHOST_OBJROOT)/stubdata"
+       ICUPKGTOOL=$(CROSSHOST_OBJROOT)/bin/icupkg
+       ifeq "$(filter-out i386 x86_64,$(RC_ARCHS))" ""
+               FORCEENDIAN= ac_cv_c_bigendian=no
+       else
+               FORCEENDIAN=
+       endif
+else ifeq "$(LINUX)" "YES"
+       TARGET_SPEC=$(UNAME_PROCESSOR)-unknown-linux-gnu
+       ENV_CONFIGURE_ARCHS=
+       ICUPKGTOOLIBS="$(OBJROOT_CURRENT)/lib:$(OBJROOT_CURRENT)/stubdata"
+       ICUPKGTOOL=$(OBJROOT_CURRENT)/bin/icupkg
+       FORCEENDIAN=
 else
-       THUMB_FLAG = -mthumb
+       TARGET_SPEC=$(UNAME_PROCESSOR)-apple-darwin10.0.0
+       ENV_CONFIGURE_ARCHS=
+       ICUPKGTOOLIBS="$(OBJROOT_CURRENT)/lib:$(OBJROOT_CURRENT)/stubdata"
+       ICUPKGTOOL=$(OBJROOT_CURRENT)/bin/icupkg
+       FORCEENDIAN=
 endif
+$(info # TARGET_SPEC=$(TARGET_SPEC))
+$(info # ENV_CONFIGURE_ARCHS=$(ENV_CONFIGURE_ARCHS))
 
 ifeq "$(RC_INDIGO)" "YES"
-       include $(APPLE_INTERNAL_DIR)/Indigo/Makefile.indigo
+       -include $(DEVELOPER_DIR)/AppleInternal/Makefiles/Makefile.indigo
        ifndef SDKROOT
-               SDKROOT=$(INDIGO_PREFIX)
+               SDKROOTMOD=$(INDIGO_PREFIX)
        endif
        DEST_ROOT=$(DSTROOT)/$(INDIGO_PREFIX)/
 else
-       DEST_ROOT=$(DSTROOT)
+       DEST_ROOT=$(DSTROOT)/
+endif
+$(info # SDKROOTMOD=$(SDKROOTMOD))
+$(info # RC_INDIGO=$(RC_INDIGO))
+$(info # CROSS_BUILD=$(CROSS_BUILD))
+$(info # DEST_ROOT=$(DEST_ROOT))
+
+ICU_TARGET_VERSION_FOR_TZ_EXTRA :=
+ifeq "$(filter arm armv6 armv7 armv7s arm64,$(RC_ARCHS))" ""
+       THUMB_FLAG =
+       ifneq "$(SDKROOTMOD)" ""
+               ICU_TARGET_VERSION_FOR_TZ_EXTRA := -mmacosx-version-min=$(OSX_HOST_VERSION_MIN_STRING)
+       endif
+else
+       THUMB_FLAG = -mthumb
 endif
 
-TZDATA=$(lastword $(wildcard $(SDKROOT)/usr/local/share/tz/tzdata*.tar.gz))
+# even for a crossbuild host build, we want to use the target's latest tzdata as pointed to by latest_tzdata.tar.gz
+export TZDATA:=$(SDKROOTMOD)/usr/local/share/tz/$(shell readlink $(SDKROOTMOD)/usr/local/share/tz/latest_tzdata.tar.gz)
+$(info # TZDATA=$(TZDATA))
 
-ifeq "$(WINDOWS)" "NO"
-       ifeq "$(SDKROOT)" ""
-               EMBEDDED:=$(shell $(CXX) -E -dM -x c -include TargetConditionals.h /dev/null | fgrep TARGET_OS_EMBEDDED | cut -d' ' -f3)
-               ISYSROOT =
-       else
-               EMBEDDED:=$(shell $(CXX) -E -dM -x c -isysroot $(SDKROOT) -include TargetConditionals.h /dev/null | fgrep TARGET_OS_EMBEDDED | cut -d' ' -f3)
-               ifeq "$(RC_INDIGO)" "YES"
-                       ISYSROOT = -isysroot $(SDKROOT)
+ifeq "$(WINDOWS)" "YES"
+       EMBEDDED:=0
+else ifeq "$(LINUX)" "YES"
+       CC := gcc
+       CXX := g++
+       EMBEDDED:=0
+       ISYSROOT =
+else
+       ifeq "$(SDKROOTMOD)" ""
+               HOSTCC := $(shell xcrun -find cc)
+               HOSTCXX := $(shell xcrun -find c++)
+               ifneq (,$(findstring XcodeDefault,$(HOSTCC)))
+                       HOSTSDK := $(shell xcodebuild -version -sdk macosx Path)
                else
-                       ISYSROOT =
+                       HOSTSDK := $(shell xcodebuild -version -sdk macosx.internal Path)
                endif
+               ISYSROOT:= -isysroot $(HOSTSDK)
+               CC := $(HOSTCC)
+               CXX := $(HOSTCXX)
+               NM := $(shell xcrun -find nm)
+               STRIPCMD := $(shell xcrun -find strip)
+       else
+               HOSTCC := $(shell xcrun -sdk macosx -find cc)
+               HOSTCXX := $(shell xcrun -sdk macosx -find c++)
+               HOSTSDK := $(shell xcodebuild -version -sdk macosx Path)
+               ISYSROOT:= -isysroot $(SDKROOTMOD)
+               CC := $(shell xcrun -sdk $(SDKROOTMOD) -find cc)
+               CXX := $(shell xcrun -sdk $(SDKROOTMOD) -find c++)
+               NM := $(shell xcrun -sdk $(SDKROOTMOD) -find nm)
+               STRIPCMD := $(shell xcrun -sdk $(SDKROOTMOD) -find strip)
        endif
-else
-       EMBEDDED:=0
+       HOSTISYSROOT = -isysroot $(HOSTSDK)
+       EMBEDDED:=$(shell $(CXX) -E -dM -x c $(ISYSROOT) -include TargetConditionals.h /dev/null | fgrep TARGET_OS_EMBEDDED | cut -d' ' -f3)
 endif
+DSYMTOOL := /usr/bin/dsymutil
+DSYMSUFFIX := .dSYM
+
+$(info # HOSTCC=$(HOSTCC))
+$(info # HOSTCXX=$(HOSTCXX))
+$(info # HOSTISYSROOT=$(HOSTISYSROOT))
+$(info # CC=$(CC))
+$(info # CXX=$(CXX))
+$(info # ISYSROOT=$(ISYSROOT))
 
 ifeq "$(EMBEDDED)" "1"
        export APPLE_EMBEDDED=YES
+       DISABLE_DRAFT=YES
 else ifeq "$(RC_INDIGO)" "YES"
        export APPLE_EMBEDDED=YES
+       DISABLE_DRAFT=YES
 else
        export APPLE_EMBEDDED=NO
+       DISABLE_DRAFT=NO
+endif
+
+ifeq "$(APPLE_EMBEDDED)" "YES"
+       ICU_TARGET_VERSION := -miphoneos-version-min=$(IOS_VERSION_TARGET_STRING)
+else
+       ICU_TARGET_VERSION := 
+endif
+$(info # ICU_TARGET_VERSION=$(ICU_TARGET_VERSION))
+
+ifeq "$(DISABLE_DRAFT)" "YES"
+       DRAFT_FLAG=--disable-draft
+else
+       DRAFT_FLAG=
 endif
 
 ifndef RC_ProjectSourceVersion
@@ -84,21 +303,64 @@ ifdef RC_PROJECTSOURCEVERSION
 endif
 endif
 
+# An Apple submission version (passed in RC_ProjectSourceVersion for official builds) is
+# X[.Y[.Z]]
+# where X is in range 0-214747, Y and Z are in range 0-99 (with no leading zeros).
+# The value for the SourceVersion property in version.plists will be calculated as
+# (X*10000 + Y*100 + Z). So we want U_ICU_VERSION_BUILDLEVEL_NUM to be Y*100 + Z
 ifneq "$(RC_ProjectSourceVersion)" ""
        ifeq "$(WINDOWS)" "YES"
-               ICU_BUILD := $(shell echo $(RC_ProjectSourceVersion) | sed -r -e 's/[0-9]+.([0-9]+)(.[0-9]+)?/\1/')
+               ICU_BUILD_Y  := $(shell echo $(RC_ProjectSourceVersion) | sed -r -e 's/([0-9]+)(\.([0-9]{1,2})(\.([0-9])([0-9])?)?)?/\3/')
+               ICU_BUILD_Z1 := $(shell echo $(RC_ProjectSourceVersion) | sed -r -e 's/([0-9]+)(\.([0-9]{1,2})(\.([0-9])([0-9])?)?)?/\5/')
+               ICU_BUILD_Z2 := $(shell echo $(RC_ProjectSourceVersion) | sed -r -e 's/([0-9]+)(\.([0-9]{1,2})(\.([0-9])([0-9])?)?)?/\6/')
        else
-               ICU_BUILD := $(shell echo $(RC_ProjectSourceVersion) | sed -E -e 's/[0-9]+.([0-9]+)(.[0-9]+)?/\1/')
+               ICU_BUILD_Y  := $(shell echo $(RC_ProjectSourceVersion) | sed -E -e 's/([0-9]+)(\.([0-9]{1,2})(\.([0-9])([0-9])?)?)?/\3/')
+               ICU_BUILD_Z1 := $(shell echo $(RC_ProjectSourceVersion) | sed -E -e 's/([0-9]+)(\.([0-9]{1,2})(\.([0-9])([0-9])?)?)?/\5/')
+               ICU_BUILD_Z2 := $(shell echo $(RC_ProjectSourceVersion) | sed -E -e 's/([0-9]+)(\.([0-9]{1,2})(\.([0-9])([0-9])?)?)?/\6/')
+       endif
+       ifeq "$(ICU_BUILD_Y)" ""
+               ICU_BUILD := 0
+       else
+               ICU_BUILD := $(subst a,$(ICU_BUILD_Y),abc)
+               ifeq "$(ICU_BUILD_Z1)" ""
+                       ICU_BUILD := $(subst b,0,$(ICU_BUILD))
+                       ICU_BUILD := $(subst c,0,$(ICU_BUILD))
+               else
+                       ifeq "$(ICU_BUILD_Z2)" ""
+                               ICU_BUILD := $(subst b,0,$(ICU_BUILD))
+                               ICU_BUILD := $(subst c,$(ICU_BUILD_Z1),$(ICU_BUILD))
+                       else
+                               ICU_BUILD := $(subst b,$(ICU_BUILD_Z1),$(ICU_BUILD))
+                               ICU_BUILD := $(subst c,$(ICU_BUILD_Z2),$(ICU_BUILD))
+                       endif
+               endif
        endif
 else
        ICU_BUILD := 0
 endif
+$(info # ICU_BUILD=$(ICU_BUILD))
+ifeq "$(ICU_BUILD)" "0"
+       DEFINE_BUILD_LEVEL = 
+else
+       DEFINE_BUILD_LEVEL =-DU_ICU_VERSION_BUILDLEVEL_NUM=$(ICU_BUILD)
+endif
 
 # Disallow $(SRCROOT) == $(OBJROOT)
 ifeq ($(OBJROOT), $(SRCROOT))
 $(error SRCROOT same as OBJROOT)
 endif
 
+# Disallow cross builds on Windows/Linux for now
+# (since those builds are not out-of-source as required for cross-builds)
+ifeq "$(CROSS_BUILD)" "YES"
+ifeq "$(WINDOWS)" "YES"
+$(error Cross-builds currently not allowed on Windows)
+endif
+ifeq "$(LINUX)" "YES"
+$(error Cross-builds currently not allowed on Linux)
+endif
+endif
+
 #################################
 # Headers
 #################################
@@ -120,11 +382,12 @@ else
     HDR_MAKE_SUBDIR = ./common/ ./i18n/ ./io/ $(EXTRA_HDRS)
 endif
 ifeq "$(WINDOWS)" "YES"
-       HDR_PREFIX=$(APPLE_INTERNAL_DIR)
        PRIVATE_HDR_PREFIX=$(APPLE_INTERNAL_DIR)
-else
+else ifeq "$(APPLE_EMBEDDED)" "YES"
        HDR_PREFIX=/usr
        PRIVATE_HDR_PREFIX=/usr/local
+else
+       PRIVATE_HDR_PREFIX=/usr/local
 endif
 
 #################################
@@ -141,10 +404,6 @@ COMMON_OBJ = ./common/*.o
 I18N_OBJ = ./i18n/*.o
 IO_OBJ = ./io/*.o
 STUB_DATA_OBJ = ./stubdata/*.o
-#COMMON_SRC = $(OBJROOT)/common/*.c
-#I18N_SRC = $(OBJROOT)/i18n/*.c
-#IO_SRC = $(OBJROOT)/io/*.c
-#STUB_DATA_SRC = $(OBJROOT)/stubdata/*.c
 EXTRA_LIBS =
 #EXTRA_LIBS =./extra/ ./layout/ ./tools/ctestfw/ ./tools/toolutil/
 #DATA_OBJ = ./data/out/build/*.o
@@ -164,7 +423,7 @@ endif
 # Note that installsrc is run on the system from which ICU is submitted, which
 # may be a different environment than the one for a which a build is targeted.
 
-INSTALLSRC_VARFILES=./ICU_embedded.order ./minimalpatchconfig.txt ./windowspatchconfig.txt ./patchconfig.txt
+INSTALLSRC_VARFILES=./ICU_embedded.order ./minimalapis.txt ./minimalapisTest.c ./minimalpatchconfig.txt ./windowspatchconfig.txt ./patchconfig.txt ./crosshostpatchconfig.txt
 
 #################################
 # Cleaning
@@ -186,18 +445,34 @@ CLEAN_SUBDIR = ./stubdata ./common ./i18n ./io ./layout ./layoutex ./data ./tool
 # Config flags
 #################################
 
-ifeq "$(APPLE_EMBEDDED)" "YES"
-       CONFIG_FLAGS = --disable-renaming --disable-extras --disable-icuio --disable-layout \
-               --disable-samples --with-data-packaging=archive --prefix=$(PRIVATE_HDR_PREFIX) \
-               $(DRAFT_FLAG) --srcdir=$(SRCROOT)/icuSources
-else ifeq "$(WINDOWS)" "YES"
-       CONFIG_FLAGS = --disable-extras --disable-icuio --disable-layout \
-               --disable-samples --with-data-packaging=library --prefix=$(PRIVATE_HDR_PREFIX) \
+ifeq "$(WINDOWS)" "YES"
+       ifeq "$(ARCH64)" "YES"
+               CONFIG_FLAGS = --disable-renaming --disable-extras --disable-layout --disable-samples --disable-icuio \
+                       --with-data-packaging=library --prefix=$(PRIVATE_HDR_PREFIX) --with-library-bits=64 \
+                       $(DRAFT_FLAG)
+       else
+               CONFIG_FLAGS = --disable-renaming --disable-extras --disable-layout --disable-samples --disable-icuio \
+                       --with-data-packaging=library --prefix=$(PRIVATE_HDR_PREFIX) --with-library-bits=32 \
+                       $(DRAFT_FLAG)
+       endif
+else ifeq "$(LINUX)" "YES"
+       ifeq "$(ARCH64)" "YES"
+               CONFIG_FLAGS = --disable-renaming --disable-extras --disable-layout --disable-samples \
+                       --with-data-packaging=archive --prefix=$(PRIVATE_HDR_PREFIX) --with-library-bits=64 \
+                       $(DRAFT_FLAG)
+       else
+               CONFIG_FLAGS = --disable-renaming --disable-extras --disable-layout --disable-samples \
+                       --with-data-packaging=archive --prefix=$(PRIVATE_HDR_PREFIX) --with-library-bits=32 \
+                       $(DRAFT_FLAG)
+       endif
+else ifeq "$(APPLE_EMBEDDED)" "YES"
+       CONFIG_FLAGS = --disable-renaming --disable-extras --disable-layout --disable-samples --disable-icuio \
+               --with-data-packaging=archive --prefix=$(PRIVATE_HDR_PREFIX) \
                $(DRAFT_FLAG)
 else
-       CONFIG_FLAGS = --disable-renaming --disable-extras --disable-layout \
-               --disable-samples --with-data-packaging=archive --prefix=$(PRIVATE_HDR_PREFIX) \
-               $(DRAFT_FLAG) --srcdir=$(SRCROOT)/icuSources
+       CONFIG_FLAGS = --disable-renaming --disable-extras --disable-layout --disable-samples \
+               --with-data-packaging=archive --prefix=$(PRIVATE_HDR_PREFIX) \
+               $(DRAFT_FLAG)
 endif
 
 #################################
@@ -212,18 +487,34 @@ endif
 # The ICU version/subversion should reflect the actual ICU version.
 
 LIB_NAME = icucore
-ICU_VERS = 40
-ICU_SUBVERS = 0
+ICU_VERS = 51
+ICU_SUBVERS = 1
 CORE_VERS = A
 
 ifeq "$(WINDOWS)" "YES"
        DYLIB_SUFF = dll
-       libdir = /AppleInternal/bin/
-       winlibdir = /AppleInternal/lib/
+       ifeq "$(ARCH64)" "YES"
+               winprogdir = /Program\ Files/Common\ Files/Apple/Apple\ Application\ Support/
+               winintlibdir = /AppleInternal/lib64/
+       else
+               winprogdir = /Program\ Files\ \(x86\)/Common\ Files/Apple/Apple\ Application\ Support/
+               winintlibdir = /AppleInternal/lib32/
+       endif
+       libdir =
+else ifeq "$(LINUX)" "YES"
+       DYLIB_SUFF = so
+       ifeq "$(ARCH64)" "YES"
+               libdir = /usr/lib64/
+       else
+               libdir = /usr/lib/
+       endif
+       winprogdir =
+       winintlibdir =
 else
        DYLIB_SUFF = dylib
        libdir = /usr/lib/
-       winlibdir =
+       winprogdir =
+       winintlibdir =
 endif
 
 DYLIB = lib$(LIB_NAME).$(DYLIB_SUFF)
@@ -233,6 +524,10 @@ ifeq "$(WINDOWS)" "YES"
        INSTALLED_DYLIB = $(LIB_NAME).$(DYLIB_SUFF)
        INSTALLED_DYLIB_DEBUG = $(LIB_NAME)_debug.$(DYLIB_SUFF)
        INSTALLED_DYLIB_PROFILE = $(LIB_NAME)_profile.$(DYLIB_SUFF)
+else ifeq "$(LINUX)" "YES"
+       INSTALLED_DYLIB = lib$(LIB_NAME).$(DYLIB_SUFF)
+       INSTALLED_DYLIB_DEBUG = lib$(LIB_NAME)_debug.$(DYLIB_SUFF)
+       INSTALLED_DYLIB_PROFILE = lib$(LIB_NAME)_profile.$(DYLIB_SUFF)
 else
        INSTALLED_DYLIB = lib$(LIB_NAME).$(CORE_VERS).$(DYLIB_SUFF)
        INSTALLED_DYLIB_DEBUG = lib$(LIB_NAME).$(CORE_VERS)_debug.$(DYLIB_SUFF)
@@ -250,12 +545,43 @@ DYLIB_profile = DYLIB_PROFILE
 # Data files
 #################################
 
-datadir=/usr/share/icu/
 OPEN_SOURCE_VERSIONS_DIR=/usr/local/OpenSourceVersions/
 OPEN_SOURCE_LICENSES_DIR=/usr/local/OpenSourceLicenses/
-ICU_DATA_DIR= data/out
+
 B_DATA_FILE=icudt$(ICU_VERS)b.dat
 L_DATA_FILE=icudt$(ICU_VERS)l.dat
+DATA_BUILD_SUBDIR= data/out
+DATA_INSTALL_DIR=/usr/share/icu/
+# DATA_LOOKUP_DIR is what the target ICU_DATA_DIR gets set to in CFLAGS, CXXFLAGS;
+# DATA_LOOKUP_DIR_BUILDHOST is what any crossbuild host ICU_DATA_DIR gets set to.
+ifneq "$(APPLE_EMBEDDED)" "YES"
+       DATA_LOOKUP_DIR=/usr/share/icu/
+else
+       ifeq "$(RC_INDIGO)" "YES"
+               DATA_LOOKUP_DIR=/usr/share/icu/
+       else
+               DATA_LOOKUP_DIR=/var/db/icu/
+       endif
+endif
+DATA_LOOKUP_DIR_BUILDHOST=/usr/share/icu/
+
+# Name of runtime environment variable to get the prefix path for DATA_LOOKUP_DIR
+# Currently we are only using this for LINUX, should also use for iOS simulator
+ifeq "$(LINUX)" "YES"
+       DATA_DIR_PREFIX_ENV_VAR=APPLE_FRAMEWORKS_ROOT
+else
+       DATA_DIR_PREFIX_ENV_VAR=
+endif
+
+#################################
+# Info tool
+#################################
+
+localtooldir=/usr/local/bin/
+
+INFOTOOL = icuinfo
+
+INFOTOOL_OBJS = ./tools/icuinfo/icuinfo.o ./tools/toolutil/udbgutil.o ./tools/toolutil/uoptions.o
 
 #################################
 # Environment variables
@@ -267,55 +593,153 @@ L_DATA_FILE=icudt$(ICU_VERS)l.dat
 # into CFLAGS (and CXXFLAGS). This controls a lot of the external variables so we don't
 # need to directly modify the ICU files (like for CFLAGS, etc).
 
-LIBOVERRIDES=LIBICUDT="-L$(OBJROOT) -l$(LIB_NAME)" \
-       LIBICUUC="-L$(OBJROOT) -l$(LIB_NAME)" \
-       LIBICUI18N="-L$(OBJROOT) -l$(LIB_NAME)"
+LIBOVERRIDES=LIBICUDT="-L$(OBJROOT_CURRENT) -l$(LIB_NAME)" \
+       LIBICUUC="-L$(OBJROOT_CURRENT) -l$(LIB_NAME)" \
+       LIBICUI18N="-L$(OBJROOT_CURRENT) -l$(LIB_NAME)"
 
 # For normal Windows builds set the ENV= options here; for debug Windows builds set the ENV_DEBUG=
 # options here and also the update the LINK.EXE lines in the TARGETS section below.
 ifeq "$(WINDOWS)" "YES"
-       ifeq "$(ICU_BUILD)" "0"
-               CPPOPTIONS = 
+       ifeq "$(ARCH64)" "YES"
+               ENV= CFLAGS="/O2 /Ob2 /MD /GF /GS /Zi /nologo /D_CRT_SECURE_CPP_OVERLOAD_STANDARD_NAMES" \
+                       CXXFLAGS="/O2 /Ob2 /MD /GF /GS /Zi /nologo /D_CRT_SECURE_CPP_OVERLOAD_STANDARD_NAMES /EHsc /Zc:wchar_t" \
+                       LDFLAGS="/NXCOMPAT /DYNAMICBASE /DEBUG /OPT:REF"
        else
-               CPPOPTIONS = CPPFLAGS="-DU_ICU_VERSION_BUILDLEVEL_NUM=$(ICU_BUILD)"
+               ENV= CFLAGS="/O2 /Ob2 /MD /GF /GS /Zi /nologo /D_CRT_SECURE_CPP_OVERLOAD_STANDARD_NAMES" \
+                       CXXFLAGS="/O2 /Ob2 /MD /GF /GS /Zi /nologo /D_CRT_SECURE_CPP_OVERLOAD_STANDARD_NAMES /EHsc /Zc:wchar_t" \
+                       LDFLAGS="/NXCOMPAT /SAFESEH /DYNAMICBASE /DEBUG /OPT:REF"
        endif
-       ENV= CFLAGS="/O2 /Ob2 /MD /GF /GS /nologo /D_CRT_SECURE_CPP_OVERLOAD_STANDARD_NAMES" CXXFLAGS="/O2 /Ob2 /MD /GF /GS /nologo /D_CRT_SECURE_CPP_OVERLOAD_STANDARD_NAMES /EHsc /Zc:wchar_t" LDFLAGS="/NXCOMPAT /SAFESEH /DYNAMICBASE"
-       ENV_CONFIGURE= $(CPPOPTIONS) CFLAGS="/O2 /Ob2 /MD /GF /GS /nologo /D_CRT_SECURE_CPP_OVERLOAD_STANDARD_NAMES" CXXFLAGS="/O2 /Ob2 /MD /GF /GS /nologo /D_CRT_SECURE_CPP_OVERLOAD_STANDARD_NAMES /EHsc /Zc:wchar_t"
-       ENV_DEBUG= CFLAGS="/O2 /Ob2 /MDd /GF /GS /Zi /D_CRT_SECURE_CPP_OVERLOAD_STANDARD_NAMES" CXXFLAGS="/O2 /Ob2 /MDd /GF /GS /Zi /D_CRT_SECURE_CPP_OVERLOAD_STANDARD_NAMES" LDFLAGS="/DEBUG"
+       ENV_CONFIGURE= CPPFLAGS="-DU_DISABLE_RENAMING=1 $(DEFINE_BUILD_LEVEL)" \
+               CFLAGS="/O2 /Ob2 /MD /GF /GS /nologo /D_CRT_SECURE_CPP_OVERLOAD_STANDARD_NAMES" \
+               CXXFLAGS="/O2 /Ob2 /MD /GF /GS /nologo /D_CRT_SECURE_CPP_OVERLOAD_STANDARD_NAMES /EHsc /Zc:wchar_t"
+       ENV_DEBUG= CFLAGS="/O2 /Ob2 /MDd /GF /GS /Zi /D_CRT_SECURE_CPP_OVERLOAD_STANDARD_NAMES" \
+               CXXFLAGS="/O2 /Ob2 /MDd /GF /GS /Zi /D_CRT_SECURE_CPP_OVERLOAD_STANDARD_NAMES /EHsc" \
+               LDFLAGS="/DEBUG /DYNAMICBASE"
        ENV_PROFILE=
-else
-       ifeq "$(ICU_BUILD)" "0"
-               CPPOPTIONS = CPPFLAGS="-DSTD_INSPIRED -DMAC_OS_X_VERSION_MIN_REQUIRED=1040"
+else ifeq "$(LINUX)" "YES"
+       ifeq "$(ARCH64)" "YES"
+               ENV_CONFIGURE= APPLE_INTERNAL_DIR="$(APPLE_INTERNAL_DIR)" \
+                       CPPFLAGS="-DU_DISABLE_RENAMING=1 $(DEFINE_BUILD_LEVEL)"  \
+                       CC="$(CC)" \
+                       CXX="$(CXX)" \
+                       CFLAGS="-DU_SHOW_CPLUSPLUS_API=1 -DU_SHOW_INTERNAL_API=1 -DICU_DATA_DIR=\"\\\"$(DATA_LOOKUP_DIR)\\\"\" -DICU_DATA_DIR_PREFIX_ENV_VAR=\"\\\"$(DATA_DIR_PREFIX_ENV_VAR)\\\"\" -m64 -g -Os -fno-exceptions -fvisibility=hidden" \
+                       CXXFLAGS="-DU_SHOW_CPLUSPLUS_API=1 -DU_SHOW_INTERNAL_API=1 -DICU_DATA_DIR=\"\\\"$(DATA_LOOKUP_DIR)\\\"\" -DICU_DATA_DIR_PREFIX_ENV_VAR=\"\\\"$(DATA_DIR_PREFIX_ENV_VAR)\\\"\" -m64 -g -Os -fno-exceptions -fvisibility=hidden -fvisibility-inlines-hidden" \
+                       TZDATA="$(TZDATA)" \
+                       DYLD_LIBRARY_PATH="$(DEST_ROOT)usr/local/lib64"
+
+               ENV= APPLE_INTERNAL_DIR="$(APPLE_INTERNAL_DIR)" \
+                       CC="$(CC)" \
+                       CXX="$(CXX)" \
+                       CFLAGS="-DU_SHOW_CPLUSPLUS_API=1 -DU_SHOW_INTERNAL_API=1 -DICU_DATA_DIR=\"\\\"$(DATA_LOOKUP_DIR)\\\"\" -DICU_DATA_DIR_PREFIX_ENV_VAR=\"\\\"$(DATA_DIR_PREFIX_ENV_VAR)\\\"\" -m64 -g -Os -fno-exceptions -fvisibility=hidden" \
+                       CXXFLAGS="-DU_SHOW_CPLUSPLUS_API=1 -DU_SHOW_INTERNAL_API=1 -DICU_DATA_DIR=\"\\\"$(DATA_LOOKUP_DIR)\\\"\" -DICU_DATA_DIR_PREFIX_ENV_VAR=\"\\\"$(DATA_DIR_PREFIX_ENV_VAR)\\\"\" -m64 -g -Os -fno-exceptions -fvisibility=hidden -fvisibility-inlines-hidden" \
+                       TZDATA="$(TZDATA)" \
+                       DYLD_LIBRARY_PATH="$(DEST_ROOT)usr/local/lib64"
+
+               ENV_DEBUG= APPLE_INTERNAL_DIR="$(APPLE_INTERNAL_DIR)" \
+                       CC="$(CC)" \
+                       CXX="$(CXX)" \
+                       CFLAGS="-DU_SHOW_CPLUSPLUS_API=1 -DU_SHOW_INTERNAL_API=1 -DICU_DATA_DIR=\"\\\"$(DATA_LOOKUP_DIR)\\\"\" -DICU_DATA_DIR_PREFIX_ENV_VAR=\"\\\"$(DATA_DIR_PREFIX_ENV_VAR)\\\"\" -m64 -O0 -gfull -fno-exceptions -fvisibility=hidden" \
+                       CXXFLAGS="-DU_SHOW_CPLUSPLUS_API=1 -DU_SHOW_INTERNAL_API=1 -DICU_DATA_DIR=\"\\\"$(DATA_LOOKUP_DIR)\\\"\" -DICU_DATA_DIR_PREFIX_ENV_VAR=\"\\\"$(DATA_DIR_PREFIX_ENV_VAR)\\\"\" -m64 -O0 -gfull -fno-exceptions -fvisibility=hidden -fvisibility-inlines-hidden" \
+                       TZDATA="$(TZDATA)" \
+                       DYLD_LIBRARY_PATH="$(DEST_ROOT)usr/local/lib64"
+               
+               ENV_PROFILE= APPLE_INTERNAL_DIR="$(APPLE_INTERNAL_DIR)" \
+                       CC="$(CC)" \
+                       CXX="$(CXX)" \
+                       CFLAGS="-DU_SHOW_CPLUSPLUS_API=1 -DU_SHOW_INTERNAL_API=1 -DICU_DATA_DIR=\"\\\"$(DATA_LOOKUP_DIR)\\\"\" -DICU_DATA_DIR_PREFIX_ENV_VAR=\"\\\"$(DATA_DIR_PREFIX_ENV_VAR)\\\"\" -m64 -g -Os -pg -fno-exceptions -fvisibility=hidden" \
+                       CXXFLAGS="-DU_SHOW_CPLUSPLUS_API=1 -DU_SHOW_INTERNAL_API=1 -DICU_DATA_DIR=\"\\\"$(DATA_LOOKUP_DIR)\\\"\" -DICU_DATA_DIR_PREFIX_ENV_VAR=\"\\\"$(DATA_DIR_PREFIX_ENV_VAR)\\\"\" -m64 -g -Os -pg -fno-exceptions -fvisibility=hidden -fvisibility-inlines-hidden" \
+                       TZDATA="$(TZDATA)" \
+                       DYLD_LIBRARY_PATH="$(DEST_ROOT)usr/local/lib64"
        else
-               CPPOPTIONS = CPPFLAGS="-DU_ICU_VERSION_BUILDLEVEL_NUM=$(ICU_BUILD) -DSTD_INSPIRED -DMAC_OS_X_VERSION_MIN_REQUIRED=1040"
+               ENV_CONFIGURE= APPLE_INTERNAL_DIR="$(APPLE_INTERNAL_DIR)" \
+                       CPPFLAGS="-DU_DISABLE_RENAMING=1 $(DEFINE_BUILD_LEVEL)" \
+                       CC="$(CC)" \
+                       CXX="$(CXX)" \
+                       CFLAGS="-DU_SHOW_CPLUSPLUS_API=1 -DU_SHOW_INTERNAL_API=1 -DICU_DATA_DIR=\"\\\"$(DATA_LOOKUP_DIR)\\\"\" -DICU_DATA_DIR_PREFIX_ENV_VAR=\"\\\"$(DATA_DIR_PREFIX_ENV_VAR)\\\"\" -m32 -g -Os -fno-exceptions -fvisibility=hidden" \
+                       CXXFLAGS="-DU_SHOW_CPLUSPLUS_API=1 -DU_SHOW_INTERNAL_API=1 -DICU_DATA_DIR=\"\\\"$(DATA_LOOKUP_DIR)\\\"\" -DICU_DATA_DIR_PREFIX_ENV_VAR=\"\\\"$(DATA_DIR_PREFIX_ENV_VAR)\\\"\" -m32 -g -Os -fno-exceptions -fvisibility=hidden -fvisibility-inlines-hidden" \
+                       TZDATA="$(TZDATA)" \
+                       DYLD_LIBRARY_PATH="$(DEST_ROOT)usr/local/lib"
+               
+               ENV= APPLE_INTERNAL_DIR="$(APPLE_INTERNAL_DIR)" \
+                       CC="$(CC)" \
+                       CXX="$(CXX)" \
+                       CFLAGS="-DU_SHOW_CPLUSPLUS_API=1 -DU_SHOW_INTERNAL_API=1 -DICU_DATA_DIR=\"\\\"$(DATA_LOOKUP_DIR)\\\"\" -DICU_DATA_DIR_PREFIX_ENV_VAR=\"\\\"$(DATA_DIR_PREFIX_ENV_VAR)\\\"\" -m32 -g -Os -fno-exceptions -fvisibility=hidden" \
+                       CXXFLAGS="-DU_SHOW_CPLUSPLUS_API=1 -DU_SHOW_INTERNAL_API=1 -DICU_DATA_DIR=\"\\\"$(DATA_LOOKUP_DIR)\\\"\" -DICU_DATA_DIR_PREFIX_ENV_VAR=\"\\\"$(DATA_DIR_PREFIX_ENV_VAR)\\\"\" -m32 -g -Os -fno-exceptions -fvisibility=hidden -fvisibility-inlines-hidden" \
+                       TZDATA="$(TZDATA)" \
+                       DYLD_LIBRARY_PATH="$(DEST_ROOT)usr/local/lib"
+                       
+               ENV_DEBUG= APPLE_INTERNAL_DIR="$(APPLE_INTERNAL_DIR)" \
+                       CC="$(CC)" \
+                       CXX="$(CXX)" \
+                       CFLAGS="-DU_SHOW_CPLUSPLUS_API=1 -DU_SHOW_INTERNAL_API=1 -DICU_DATA_DIR=\"\\\"$(DATA_LOOKUP_DIR)\\\"\" -DICU_DATA_DIR_PREFIX_ENV_VAR=\"\\\"$(DATA_DIR_PREFIX_ENV_VAR)\\\"\" -m32 -O0 -gfull -fno-exceptions -fvisibility=hidden" \
+                       CXXFLAGS="-DU_SHOW_CPLUSPLUS_API=1 -DU_SHOW_INTERNAL_API=1 -DICU_DATA_DIR=\"\\\"$(DATA_LOOKUP_DIR)\\\"\" -DICU_DATA_DIR_PREFIX_ENV_VAR=\"\\\"$(DATA_DIR_PREFIX_ENV_VAR)\\\"\" -m32 -O0 -gfull -fno-exceptions -fvisibility=hidden -fvisibility-inlines-hidden" \
+                       TZDATA="$(TZDATA)" \
+                       DYLD_LIBRARY_PATH="$(DEST_ROOT)usr/local/lib"
+               
+               ENV_PROFILE= APPLE_INTERNAL_DIR="$(APPLE_INTERNAL_DIR)" \
+                       CC="$(CC)" \
+                       CXX="$(CXX)" \
+                       CFLAGS="-DU_SHOW_CPLUSPLUS_API=1 -DU_SHOW_INTERNAL_API=1 -DICU_DATA_DIR=\"\\\"$(DATA_LOOKUP_DIR)\\\"\" -DICU_DATA_DIR_PREFIX_ENV_VAR=\"\\\"$(DATA_DIR_PREFIX_ENV_VAR)\\\"\" -m32 -g -Os -pg -fno-exceptions -fvisibility=hidden" \
+                       CXXFLAGS="-DU_SHOW_CPLUSPLUS_API=1 -DU_SHOW_INTERNAL_API=1 -DICU_DATA_DIR=\"\\\"$(DATA_LOOKUP_DIR)\\\"\" -DICU_DATA_DIR_PREFIX_ENV_VAR=\"\\\"$(DATA_DIR_PREFIX_ENV_VAR)\\\"\" -m32 -g -Os -pg -fno-exceptions -fvisibility=hidden -fvisibility-inlines-hidden" \
+                       TZDATA="$(TZDATA)" \
+                       DYLD_LIBRARY_PATH="$(DEST_ROOT)usr/local/lib"
        endif
-       ENV=    APPLE_INTERNAL_DIR="$(APPLE_INTERNAL_DIR)" \
-               CFLAGS="-DICU_DATA_DIR=\"\\\"/usr/share/icu/\\\"\" $(RC_ARCHS:%=-arch %) -g -Os -fno-exceptions -fvisibility=hidden $(ISYSROOT) $(THUMB_FLAG)" \
-               CXXFLAGS="-DICU_DATA_DIR=\"\\\"/usr/share/icu/\\\"\" $(RC_ARCHS:%=-arch %) -g -Os -fno-exceptions -fno-rtti -fvisibility=hidden -fvisibility-inlines-hidden $(ISYSROOT) $(THUMB_FLAG)" \
+else
+       CPPOPTIONS = 
+       ENV_CONFIGURE= APPLE_INTERNAL_DIR="$(APPLE_INTERNAL_DIR)" \
+               CPPFLAGS="$(DEFINE_BUILD_LEVEL) -DSTD_INSPIRED -DMAC_OS_X_VERSION_MIN_REQUIRED=$(MAC_OS_X_VERSION_MIN_REQUIRED) $(ISYSROOT) $(ENV_CONFIGURE_ARCHS)" \
+               CC="$(CC)" \
+               CXX="$(CXX)" \
+               CFLAGS="-DU_SHOW_CPLUSPLUS_API=1 -DU_SHOW_INTERNAL_API=1 -DICU_DATA_DIR=\"\\\"$(DATA_LOOKUP_DIR)\\\"\" $(ENV_CONFIGURE_ARCHS) $(ICU_TARGET_VERSION) -g -Os -Wglobal-constructors -fno-exceptions -fvisibility=hidden $(ISYSROOT) $(THUMB_FLAG)" \
+               CXXFLAGS="-DU_SHOW_CPLUSPLUS_API=1 -DU_SHOW_INTERNAL_API=1 -DICU_DATA_DIR=\"\\\"$(DATA_LOOKUP_DIR)\\\"\" $(ENV_CONFIGURE_ARCHS) $(ICU_TARGET_VERSION) -g -Os -Wglobal-constructors -fno-exceptions -fvisibility=hidden -fvisibility-inlines-hidden $(ISYSROOT) $(THUMB_FLAG)" \
+               RC_ARCHS="$(RC_ARCHS)" $(FORCEENDIAN)\
+               TZDATA="$(TZDATA)" \
+               DYLD_LIBRARY_PATH="$(DEST_ROOT)usr/local/lib"
+       
+       ENV= APPLE_INTERNAL_DIR="$(APPLE_INTERNAL_DIR)" \
+               CC="$(CC)" \
+               CXX="$(CXX)" \
+               CFLAGS="-DU_SHOW_CPLUSPLUS_API=1 -DU_SHOW_INTERNAL_API=1 -DICU_DATA_DIR=\"\\\"$(DATA_LOOKUP_DIR)\\\"\" $(RC_ARCHS:%=-arch %) $(ICU_TARGET_VERSION) -g -Os -Wglobal-constructors -fno-exceptions -fvisibility=hidden $(ISYSROOT) $(THUMB_FLAG)" \
+               CXXFLAGS="-DU_SHOW_CPLUSPLUS_API=1 -DU_SHOW_INTERNAL_API=1 -DICU_DATA_DIR=\"\\\"$(DATA_LOOKUP_DIR)\\\"\" $(RC_ARCHS:%=-arch %) $(ICU_TARGET_VERSION) -g -Os -Wglobal-constructors -fno-exceptions -fvisibility=hidden -fvisibility-inlines-hidden $(ISYSROOT) $(THUMB_FLAG)" \
                RC_ARCHS="$(RC_ARCHS)" \
                TZDATA="$(TZDATA)" \
-               DYLD_LIBRARY_PATH="$(DEST_ROOT)/usr/local/lib"
+               DYLD_LIBRARY_PATH="$(DEST_ROOT)usr/local/lib"
                
-       ENV_CONFIGURE=  $(CPPOPTIONS) APPLE_INTERNAL_DIR="$(APPLE_INTERNAL_DIR)" \
-               CFLAGS="-DICU_DATA_DIR=\"\\\"/usr/share/icu/\\\"\" -g -Os -fno-exceptions -fvisibility=hidden $(ISYSROOT) $(THUMB_FLAG)" \
-               CXXFLAGS="-DICU_DATA_DIR=\"\\\"/usr/share/icu/\\\"\" -g -Os -fno-exceptions -fno-rtti -fvisibility=hidden -fvisibility-inlines-hidden $(ISYSROOT) $(THUMB_FLAG)" \
+       ENV_DEBUG= APPLE_INTERNAL_DIR="$(APPLE_INTERNAL_DIR)" \
+               CC="$(CC)" \
+               CXX="$(CXX)" \
+               CFLAGS="-DU_SHOW_CPLUSPLUS_API=1 -DU_SHOW_INTERNAL_API=1 -DICU_DATA_DIR=\"\\\"$(DATA_LOOKUP_DIR)\\\"\" $(RC_ARCHS:%=-arch %) $(ICU_TARGET_VERSION) -O0 -gfull -Wglobal-constructors -fno-exceptions -fvisibility=hidden $(ISYSROOT) $(THUMB_FLAG)" \
+               CXXFLAGS="-DU_SHOW_CPLUSPLUS_API=1 -DU_SHOW_INTERNAL_API=1 -DICU_DATA_DIR=\"\\\"$(DATA_LOOKUP_DIR)\\\"\" $(RC_ARCHS:%=-arch %) $(ICU_TARGET_VERSION) -O0 -gfull -Wglobal-constructors -fno-exceptions -fvisibility=hidden -fvisibility-inlines-hidden $(ISYSROOT) $(THUMB_FLAG)" \
                RC_ARCHS="$(RC_ARCHS)" \
                TZDATA="$(TZDATA)" \
-               DYLD_LIBRARY_PATH="$(DEST_ROOT)/usr/local/lib"
+               DYLD_LIBRARY_PATH="$(DEST_ROOT)usr/local/lib"
        
-       ENV_DEBUG = APPLE_INTERNAL_DIR="$(APPLE_INTERNAL_DIR)" \
-               CFLAGS="-DICU_DATA_DIR=\"\\\"/usr/share/icu/\\\"\" $(RC_ARCHS:%=-arch %) -O0 -gfull -fno-exceptions -fvisibility=hidden $(ISYSROOT) $(THUMB_FLAG)" \
-               CXXFLAGS="-DICU_DATA_DIR=\"\\\"/usr/share/icu/\\\"\" $(RC_ARCHS:%=-arch %) -O0 -gfull -fno-exceptions -fno-rtti -fvisibility=hidden -fvisibility-inlines-hidden $(ISYSROOT) $(THUMB_FLAG)" \
+       ENV_PROFILE= APPLE_INTERNAL_DIR="$(APPLE_INTERNAL_DIR)" \
+               CC="$(CC)" \
+               CXX="$(CXX)" \
+               CFLAGS="-DU_SHOW_CPLUSPLUS_API=1 -DU_SHOW_INTERNAL_API=1 -DICU_DATA_DIR=\"\\\"$(DATA_LOOKUP_DIR)\\\"\" $(RC_ARCHS:%=-arch %) $(ICU_TARGET_VERSION) -g -Os -pg -Wglobal-constructors -fno-exceptions -fvisibility=hidden $(ISYSROOT) $(THUMB_FLAG)" \
+               CXXFLAGS="-DU_SHOW_CPLUSPLUS_API=1 -DU_SHOW_INTERNAL_API=1 -DICU_DATA_DIR=\"\\\"$(DATA_LOOKUP_DIR)\\\"\" $(RC_ARCHS:%=-arch %) $(ICU_TARGET_VERSION) -g -Os -pg -Wglobal-constructors -fno-exceptions -fvisibility=hidden -fvisibility-inlines-hidden $(ISYSROOT) $(THUMB_FLAG)" \
                RC_ARCHS="$(RC_ARCHS)" \
                TZDATA="$(TZDATA)" \
-               DYLD_LIBRARY_PATH="$(DEST_ROOT)/usr/local/lib"
+               DYLD_LIBRARY_PATH="$(DEST_ROOT)usr/local/lib"
+
+       ENV_CONFIGURE_BUILDHOST= APPLE_INTERNAL_DIR="$(APPLE_INTERNAL_DIR)" \
+               CPPFLAGS="$(DEFINE_BUILD_LEVEL) -DSTD_INSPIRED -DMAC_OS_X_VERSION_MIN_REQUIRED=$(MAC_OS_X_VERSION_MIN_REQUIRED) $(HOSTISYSROOT)" \
+               CC="$(HOSTCC)" \
+               CXX="$(HOSTCXX)" \
+               CFLAGS="-DU_SHOW_CPLUSPLUS_API=1 -DU_SHOW_INTERNAL_API=1 -DICU_DATA_DIR=\"\\\"$(DATA_LOOKUP_DIR_BUILDHOST)\\\"\" -DMAC_OS_X_VERSION_MIN_REQUIRED=$(MAC_OS_X_VERSION_MIN_REQUIRED) -mmacosx-version-min=$(OSX_HOST_VERSION_MIN_STRING) $(HOSTISYSROOT) -g -Os -Wglobal-constructors -fno-exceptions -fvisibility=hidden" \
+               CXXFLAGS="-DU_SHOW_CPLUSPLUS_API=1 -DU_SHOW_INTERNAL_API=1 -DICU_DATA_DIR=\"\\\"$(DATA_LOOKUP_DIR_BUILDHOST)\\\"\" -DMAC_OS_X_VERSION_MIN_REQUIRED=$(MAC_OS_X_VERSION_MIN_REQUIRED) -mmacosx-version-min=$(OSX_HOST_VERSION_MIN_STRING) $(HOSTISYSROOT) -g -Os -Wglobal-constructors -fno-exceptions -fvisibility=hidden -fvisibility-inlines-hidden" \
+               TZDATA="$(TZDATA)" \
+               DYLD_LIBRARY_PATH="$(DEST_ROOT)usr/local/lib"
        
-       ENV_PROFILE = APPLE_INTERNAL_DIR="$(APPLE_INTERNAL_DIR)" \
-               CFLAGS="-DICU_DATA_DIR=\"\\\"/usr/share/icu/\\\"\" $(RC_ARCHS:%=-arch %) -g -Os -pg -fno-exceptions -fvisibility=hidden $(ISYSROOT) $(THUMB_FLAG)" \
-               CXXFLAGS="-DICU_DATA_DIR=\"\\\"/usr/share/icu/\\\"\" $(RC_ARCHS:%=-arch %) -g -Os -pg -fno-exceptions -fno-rtti -fvisibility=hidden -fvisibility-inlines-hidden $(ISYSROOT) $(THUMB_FLAG)" \
-               RC_ARCHS="$(RC_ARCHS)" \
+       ENV_BUILDHOST= APPLE_INTERNAL_DIR="$(APPLE_INTERNAL_DIR)" \
+               CC="$(HOSTCC)" \
+               CXX="$(HOSTCXX)" \
+               CFLAGS="-DU_SHOW_CPLUSPLUS_API=1 -DU_SHOW_INTERNAL_API=1 -DICU_DATA_DIR=\"\\\"$(DATA_LOOKUP_DIR_BUILDHOST)\\\"\" -DMAC_OS_X_VERSION_MIN_REQUIRED=$(MAC_OS_X_VERSION_MIN_REQUIRED) -mmacosx-version-min=$(OSX_HOST_VERSION_MIN_STRING) $(HOSTISYSROOT) -g -Os -Wglobal-constructors -fno-exceptions -fvisibility=hidden" \
+               CXXFLAGS="-DU_SHOW_CPLUSPLUS_API=1 -DU_SHOW_INTERNAL_API=1 -DICU_DATA_DIR=\"\\\"$(DATA_LOOKUP_DIR_BUILDHOST)\\\"\" -DMAC_OS_X_VERSION_MIN_REQUIRED=$(MAC_OS_X_VERSION_MIN_REQUIRED) -mmacosx-version-min=$(OSX_HOST_VERSION_MIN_STRING) $(HOSTISYSROOT) -g -Os -Wglobal-constructors -fno-exceptions -fvisibility=hidden -fvisibility-inlines-hidden" \
                TZDATA="$(TZDATA)" \
-               DYLD_LIBRARY_PATH="$(DEST_ROOT)/usr/local/lib"
+               DYLD_LIBRARY_PATH="$(DEST_ROOT)usr/local/lib"
+
 endif
        
 ENV_icu = ENV
@@ -340,92 +764,211 @@ endif
 #################################
 #################################
 
-.PHONY : icu check installsrc installhdrs installhdrsint clean install debug debug-install
+.PHONY : icu check installsrc installhdrs installhdrsint clean install debug debug-install crossbuildhost
 .DELETE_ON_ERROR :
 
-icu debug profile : $(OBJROOT)/Makefile
-       (cd $(OBJROOT); \
+icu debug profile : $(OBJROOT_CURRENT)/Makefile
+       echo "# make for target";
+       (cd $(OBJROOT_CURRENT); \
                $(MAKE) $($(ENV_$@)); \
                if test "$(WINDOWS)" = "YES"; then \
+                       (cd common; \
+                               rc.exe /folibicuuc.res $(CPPFLAGS) -DU_RELEASE=1 -D_CRT_SECURE_NO_DEPRECATE -I. -I../i18n \
+                                       "-DDEFAULT_ICU_PLUGINS=\"/AppleInternal/lib/icu\" " -DU_LOCAL_SERVICE_HOOK=1 libicuuc.rc; \
+                       ); \
+                       (cd i18n; \
+                               rc.exe /folibicuin.res $(CPPFLAGS) -DU_RELEASE=1 -D_CRT_SECURE_NO_DEPRECATE -I. -I../common libicuin.rc; \
+                       ); \
                        if test "$@" = "debug"; then \
                                (cd common; \
-                                       LINK.EXE /subsystem:console /DLL /nologo /base:"0x4a800000" /DEBUG \
-                                               /IMPLIB:../lib/icuuc_$@.lib /out:../lib/icuuc$(ICU_VERS)_$@.dll *.o \
-                                               common.res ../stubdata/icudt.lib advapi32.lib;); \
+                                       LINK.EXE /subsystem:console /DLL /nologo /base:"0x4a800000" /DYNAMICBASE /DEBUG \
+                                               /IMPLIB:../lib/libicuuc_$@.lib /out:../lib/libicuuc_$@.dll \
+                                               *.o libicuuc.res ../stubdata/icudt.lib advapi32.lib; \
+                               ); \
                                (cd i18n; \
-                                       LINK.EXE /subsystem:console /DLL /nologo /base:"0x4a900000" /DEBUG \
-                                               /IMPLIB:../lib/icuin_$@.lib /out:../lib/icuin$(ICU_VERS)_$@.dll *.o \
-                                               i18n.res ../lib/icuuc_$@.lib ../stubdata/icudt.lib advapi32.lib;); \
+                                       LINK.EXE /subsystem:console /DLL /nologo /base:"0x4a900000" /DYNAMICBASE /DEBUG \
+                                               /IMPLIB:../lib/libicuin_$@.lib /out:../lib/libicuin_$@.dll \
+                                               *.o libicuin.res ../lib/libicuuc_$@.lib ../stubdata/icudt.lib advapi32.lib; \
+                               ); \
+                       else \
+                               (cd common; \
+                                       rm -f ../lib/libicuuc.dll.manifest; \
+                                       if test "$(ARCH64)" = "YES"; then \
+                                               LINK.EXE /DLL /NXCOMPAT /DYNAMICBASE /DEBUG /OPT:REF /MANIFEST \
+                                                       /IMPLIB:../lib/libicuuc.lib /out:../lib/libicuuc.dll \
+                                                       *.o libicuuc.res ../stubdata/icudt.lib advapi32.lib; \
+                                       else \
+                                               LINK.EXE /DLL /NXCOMPAT /SAFESEH /DYNAMICBASE /DEBUG /OPT:REF /MANIFEST \
+                                                       /IMPLIB:../lib/libicuuc.lib /out:../lib/libicuuc.dll \
+                                                       *.o libicuuc.res ../stubdata/icudt.lib advapi32.lib; \
+                                       fi; \
+                                       mt.exe -nologo -manifest ../lib/libicuuc.dll.manifest -outputresource:"../lib/libicuuc.dll;2"; \
+                               ); \
+                               (cd i18n; \
+                                       rm -f ../lib/libicuin.dll.manifest; \
+                                       if test "$(ARCH64)" = "YES"; then \
+                                               LINK.EXE /DLL /NXCOMPAT /DYNAMICBASE /DEBUG /OPT:REF /MANIFEST \
+                                                       /IMPLIB:../lib/libicuin.lib /out:../lib/libicuin.dll \
+                                                       *.o libicuin.res ../lib/libicuuc.lib ../stubdata/icudt.lib advapi32.lib; \
+                                       else \
+                                               LINK.EXE /DLL /NXCOMPAT /SAFESEH /DYNAMICBASE /DEBUG /OPT:REF /MANIFEST \
+                                                       /IMPLIB:../lib/libicuin.lib /out:../lib/libicuin.dll \
+                                                       *.o libicuin.res ../lib/libicuuc.lib ../stubdata/icudt.lib advapi32.lib; \
+                                       fi; \
+                                       mt.exe -nologo -manifest ../lib/libicuin.dll.manifest -outputresource:"../lib/libicuin.dll;2"; \
+                               ); \
+                               if test "$(ARCH64)" != "YES"; then \
+                                       mkdir -p lib/shim; \
+                                       (cd common; \
+                                               rm -f icuuc40shim.o; \
+                                               rm -f ../lib/icuuc40.dll.manifest; \
+                                               cl -DU_DISABLE_RENAMING=1 -DU_ICU_VERSION_BUILDLEVEL_NUM=$(ICU_BUILD) \
+                                                       -DU_RELEASE=1 -D_CRT_SECURE_NO_DEPRECATE -I. -I../i18n \
+                                                       -DU_LOCAL_SERVICE_HOOK=1 -DWIN32 -DU_COMMON_IMPLEMENTATION \
+                                                       /O2 /Ob2 /MD /GF /GS /Zi /nologo /D_CRT_SECURE_CPP_OVERLOAD_STANDARD_NAMES /EHsc /Zc:wchar_t \
+                                                       /c /Foicuuc40shim.o icuuc40shim.cpp; \
+                                               rc.exe /foicuuc40shim.res $(CPPFLAGS) -DU_RELEASE=1 -D_CRT_SECURE_NO_DEPRECATE -I. -I../i18n \
+                                                       "-DDEFAULT_ICU_PLUGINS=\"/AppleInternal/lib/icu\" " -DU_LOCAL_SERVICE_HOOK=1 icuuc40shim.rc; \
+                                               LINK.EXE /DLL /NXCOMPAT /SAFESEH /DYNAMICBASE /DEBUG /OPT:REF /MANIFEST \
+                                                       /IMPLIB:../lib/shim/icuuc.lib /out:../lib/icuuc40.dll \
+                                                       icuuc40shim.o icuuc40shim.res ../lib/libicuuc.lib ../stubdata/icudt.lib advapi32.lib; \
+                                               mt.exe -nologo -manifest ../lib/icuuc40.dll.manifest -outputresource:"../lib/icuuc40.dll;2"; \
+                                       ); \
+                                       (cd i18n; \
+                                               rm -f icuin40shim.o; \
+                                               rm -f ../lib/icuin40.dll.manifest; \
+                                               cl -DU_DISABLE_RENAMING=1 -DU_ICU_VERSION_BUILDLEVEL_NUM=$(ICU_BUILD) \
+                                                       -DU_RELEASE=1 -D_CRT_SECURE_NO_DEPRECATE -I. -I../common \
+                                                       -DU_LOCAL_SERVICE_HOOK=1 -DWIN32 -DU_I18N_IMPLEMENTATION \
+                                                       /O2 /Ob2 /MD /GF /GS /Zi /nologo /D_CRT_SECURE_CPP_OVERLOAD_STANDARD_NAMES /EHsc /Zc:wchar_t \
+                                                       /c /Foicuin40shim.o icuin40shim.cpp; \
+                                               rc.exe /foicuin40shim.res $(CPPFLAGS) -DU_RELEASE=1 -D_CRT_SECURE_NO_DEPRECATE -I. -I../common \
+                                                       "-DDEFAULT_ICU_PLUGINS=\"/AppleInternal/lib/icu\" " -DU_LOCAL_SERVICE_HOOK=1 icuin40shim.rc; \
+                                               LINK.EXE /DLL /NXCOMPAT /SAFESEH /DYNAMICBASE /DEBUG /OPT:REF /MANIFEST \
+                                                       /IMPLIB:../lib/shim/icuin.lib /out:../lib/icuin40.dll \
+                                                       icuin40shim.o icuin40shim.res ../lib/libicuin.lib ../stubdata/icudt.lib advapi32.lib; \
+                                               mt.exe -nologo -manifest ../lib/icuin40.dll.manifest -outputresource:"../lib/icuin40.dll;2"; \
+                                       ); \
+                               fi; \
                        fi; \
                else \
-                       tmpfile=`mktemp -t weakexternal` || exit 1; \
-                       nm -m $(RC_ARCHS:%=-arch %) $(DYLIB_OBJS) | fgrep "weak external" | fgrep -v "undefined" | sed -e 's/.*weak external[^_]*//' | sort | uniq | cat >$$tmpfile; \
-                       $($(ENV_$@)) $(CXX) -current_version $(ICU_VERS).$(ICU_SUBVERS) -compatibility_version 1 -dynamiclib -dynamic \
-                               $(RC_ARCHS:%=-arch %) $(CXXFLAGS) $(LDFLAGS) -single_module $(SECTORDER_FLAGS) -unexported_symbols_list $$tmpfile -dead_strip \
-                               -install_name $(libdir)$($(INSTALLED_DYLIB_$@)) -o ./$($(INSTALLED_DYLIB_$@)) $(DYLIB_OBJS); \
-                       if test -f ./$(ICU_DATA_DIR)/$(B_DATA_FILE); then \
-                               ln -fs ./$(ICU_DATA_DIR)/$(B_DATA_FILE); \
+                       if test "$(LINUX)" = "YES"; then \
+                               if test "$(ARCH64)" = "YES"; then \
+                                       $($(ENV_$@)) $(CXX) \
+                                               -m64 -g -Os -fno-exceptions -fvisibility=hidden -fvisibility-inlines-hidden \
+                                               $(CXXFLAGS) $(LDFLAGS) -shared -Wl,-Bsymbolic -Wl,-soname,$($(INSTALLED_DYLIB_$@)) -Wl,-L/usr/lib64/ -ldl \
+                                               -o ./$($(INSTALLED_DYLIB_$@)) $(DYLIB_OBJS); \
+                               else \
+                                       $($(ENV_$@)) $(CXX) \
+                                               -m32 -g -Os -fno-exceptions -fvisibility=hidden -fvisibility-inlines-hidden \
+                                               $(CXXFLAGS) $(LDFLAGS) -shared -Wl,-Bsymbolic -Wl,-soname,$($(INSTALLED_DYLIB_$@)) -ldl \
+                                               -o ./$($(INSTALLED_DYLIB_$@)) $(DYLIB_OBJS); \
+                               fi; \
                        else \
-                               DYLD_LIBRARY_PATH="./lib:./stubdata" \
-                               ./bin/icupkg -tb ./$(ICU_DATA_DIR)/$(L_DATA_FILE) $(B_DATA_FILE); \
+                               tmpfile=`mktemp -t weakexternal.XXXXXX` || exit 1; \
+                               $(NM) -m $(RC_ARCHS:%=-arch %) $(DYLIB_OBJS) | fgrep "weak external" | fgrep -v "undefined" | sed -e 's/.*weak external[^_]*//' | sort | uniq | cat >$$tmpfile; \
+                               $($(ENV_$@)) $(CXX) -current_version $(ICU_VERS).$(ICU_SUBVERS) -compatibility_version 1 -dynamiclib -dynamic \
+                                       $(RC_ARCHS:%=-arch %) $(ICU_TARGET_VERSION) -g -Os -fno-exceptions -fvisibility=hidden -fvisibility-inlines-hidden $(ISYSROOT) $(THUMB_FLAG) \
+                                       $(CXXFLAGS) $(LDFLAGS) -single_module $(SECTORDER_FLAGS) -unexported_symbols_list $$tmpfile -dead_strip \
+                                       -install_name $(libdir)$($(INSTALLED_DYLIB_$@)) -o ./$($(INSTALLED_DYLIB_$@)) $(DYLIB_OBJS); \
+                               if test "$@" = "icu"; then \
+                                       ln -fs  $(INSTALLED_DYLIB) $(DYLIB); \
+                                       $($(ENV_$@)) $(CXX) $(RC_ARCHS:%=-arch %) -g -Os -fno-exceptions -fvisibility=hidden -fvisibility-inlines-hidden $(ISYSROOT) $(THUMB_FLAG) \
+                                               $(LDFLAGS) -Wl,-S -Wl,-x -dead_strip -o ./$(INFOTOOL) $(INFOTOOL_OBJS) -L./ -l$(LIB_NAME) ; \
+                               fi; \
+                       fi; \
+                       if test -f ./$(DATA_BUILD_SUBDIR)/$(B_DATA_FILE); then \
+                               ln -fs ./$(DATA_BUILD_SUBDIR)/$(B_DATA_FILE); \
                        fi; \
-                       if test -f ./$(ICU_DATA_DIR)/$(L_DATA_FILE); then \
-                               ln -fs ./$(ICU_DATA_DIR)/$(L_DATA_FILE); \
+                       if test -f ./$(DATA_BUILD_SUBDIR)/$(L_DATA_FILE); then \
+                               ln -fs ./$(DATA_BUILD_SUBDIR)/$(L_DATA_FILE); \
                        else \
-                               DYLD_LIBRARY_PATH="./lib:./stubdata" \
-                               ./bin/icupkg -tl ./$(ICU_DATA_DIR)/$(B_DATA_FILE) $(L_DATA_FILE); \
+                               DYLD_LIBRARY_PATH=$(ICUPKGTOOLIBS) \
+                               $(ICUPKGTOOL) -tl ./$(DATA_BUILD_SUBDIR)/$(B_DATA_FILE) $(L_DATA_FILE); \
                        fi; \
                fi; \
        );
 
+crossbuildhost : $(CROSSHOST_OBJROOT)/Makefile
+       echo "# make for crossbuild host";
+       (cd $(CROSSHOST_OBJROOT); \
+               $(MAKE) $($(ENV_BUILDHOST)); \
+       );
+
 check : icu
-       (cd $(OBJROOT); \
-               ICU_DATA=$(OBJROOT) $(MAKE) $(ENV) check; \
+ifneq "$(CROSS_BUILD)" "YES"
+       (cd $(OBJROOT_CURRENT); \
+               ICU_DATA=$(OBJROOT_CURRENT) $(MAKE) $(ENV) check; \
        );
+else
+       $(warning check not supported for cross-build)
+endif
 
 check-debug: debug
-       (cd $(OBJROOT); \
-               ICU_DATA=$(OBJROOT) $(MAKE) $(ENV_DEBUG) check; \
+ifneq "$(CROSS_BUILD)" "YES"
+       (cd $(OBJROOT_CURRENT); \
+               ICU_DATA=$(OBJROOT_CURRENT) $(MAKE) $(ENV_DEBUG) check; \
        );
+else
+       $(warning check not supported for cross-build)
+endif
 
 samples: icu
-       (cd $(OBJROOT)/samples; \
+       (cd $(OBJROOT_CURRENT)/samples; \
                $(MAKE) $(ENV_DEBUG) $(LIBOVERRIDES); \
        );
 
 extra: icu
-       (cd $(OBJROOT)/extra; \
+       (cd $(OBJROOT_CURRENT)/extra; \
                $(MAKE) $(ENV_DEBUG) $(LIBOVERRIDES); \
        );
 
-$(OBJROOT)/Makefile : 
-       if test ! -d $(OBJROOT); then \
-               mkdir -p $(OBJROOT); \
+ifneq "$(CROSS_BUILD)" "YES"
+$(OBJROOT_CURRENT)/Makefile : 
+else
+$(OBJROOT_CURRENT)/Makefile : crossbuildhost
+endif
+       if test ! -d $(OBJROOT_CURRENT); then \
+               mkdir -p $(OBJROOT_CURRENT); \
        fi;
+       cp -Rpf $(SRCROOT)/icuSources/* $(OBJROOT_CURRENT)/;
        if test "$(WINDOWS)" = "YES"; then \
-               cp -Rpf $(SRCROOT)/icuSources/* $(OBJROOT); \
-               (cd $(OBJROOT)/data/unidata; mv base_unidata/*.txt .;); \
-               (cd $(OBJROOT); $(ENV_CONFIGURE) ./runConfigureICU Cygwin/MSVC $(CONFIG_FLAGS);) \
+               echo "# configure for target"; \
+               (cd $(OBJROOT_CURRENT)/data/unidata; mv base_unidata/*.txt .;); \
+               (cd $(OBJROOT_CURRENT)/data/unidata/norm2; mv base_norm2/*.txt .;); \
+               (cd $(OBJROOT_CURRENT)/data/in; mv base_in/*.nrm .; mv base_in/*.icu .;); \
+               (cd $(OBJROOT_CURRENT); $(ENV_CONFIGURE) ./runConfigureICU Cygwin/MSVC $(CONFIG_FLAGS);) \
+       elif test "$(LINUX)" = "YES"; then \
+               echo "# configure for target"; \
+               (cd $(OBJROOT_CURRENT)/data/unidata; mv base_unidata/*.txt .;); \
+               (cd $(OBJROOT_CURRENT)/data/unidata/norm2; mv base_norm2/*.txt .;); \
+               (cd $(OBJROOT_CURRENT)/data/in; mv base_in/*.nrm .; mv base_in/*.icu .;); \
+               (cd $(OBJROOT_CURRENT); $(ENV_CONFIGURE) ./runConfigureICU Linux $(CONFIG_FLAGS);) \
+       elif test "$(CROSS_BUILD)" = "YES"; then \
+               echo "# configure for crossbuild target"; \
+               (cd $(OBJROOT_CURRENT); $(ENV_CONFIGURE) ./configure --host=$(TARGET_SPEC) --with-cross-build=$(CROSSHOST_OBJROOT) $(CONFIG_FLAGS);) \
        else \
-               (cd $(OBJROOT); $(ENV_CONFIGURE) $(SRCROOT)/icuSources/runConfigureICU MacOSX $(CONFIG_FLAGS);) \
+               echo "# configure for non-crossbuild target"; \
+               (cd $(OBJROOT_CURRENT); $(ENV_CONFIGURE) ./runConfigureICU MacOSX $(CONFIG_FLAGS);) \
        fi;
        if test "$(APPLE_EMBEDDED)" = "YES"; then \
-               (cd $(OBJROOT)/common/unicode/; \
-                       cp $(SRCROOT)/icuSources/common/unicode/uconfig.h . ; \
-                       cp $(SRCROOT)/icuSources/common/unicode/udata.h . ; \
-                       patch <$(SRCROOT)/minimalpatchconfig.txt;) \
+               (cd $(OBJROOT_CURRENT)/common/unicode/; patch <$(SRCROOT)/minimalpatchconfig.txt;) \
        elif test "$(WINDOWS)" = "YES"; then \
-               (cd $(OBJROOT)/common/unicode/; \
-                       cp $(SRCROOT)/icuSources/common/unicode/uconfig.h . ; \
-                       patch <$(SRCROOT)/windowspatchconfig.txt;) \
+               (cd $(OBJROOT_CURRENT)/common/unicode/; patch <$(SRCROOT)/windowspatchconfig.txt;) \
        else \
-               (cd $(OBJROOT)/common/unicode/; \
-                       cp $(SRCROOT)/icuSources/common/unicode/uconfig.h . ; \
-                       patch <$(SRCROOT)/patchconfig.txt;) \
+               (cd $(OBJROOT_CURRENT)/common/unicode/; patch <$(SRCROOT)/patchconfig.txt;) \
        fi; \
-       if test -f $(SRCROOT)/icuSources/common/Makefile.local; then \
-               cp -p $(SRCROOT)/icuSources/common/Makefile.local $(OBJROOT)/common/ ; \
-       fi; 
+
+# for the tools that build the data file, cannot set UDATA_DEFAULT_ACCESS = UDATA_ONLY_PACKAGES
+# as minimalpatchconfig.txt does; need different patches for the host build.
+$(CROSSHOST_OBJROOT)/Makefile : 
+       if test ! -d $(CROSSHOST_OBJROOT); then \
+               mkdir -p $(CROSSHOST_OBJROOT); \
+       fi;
+       cp -Rpf $(SRCROOT)/icuSources/* $(CROSSHOST_OBJROOT);
+       echo "# configure for crossbuild host";
+       (cd $(CROSSHOST_OBJROOT); $(ENV_CONFIGURE_BUILDHOST) ./runConfigureICU MacOSX $(CONFIG_FLAGS);)
+       (cd $(CROSSHOST_OBJROOT)/common/unicode/; patch <$(SRCROOT)/crosshostpatchconfig.txt;)
 
 #################################
 # B&I TARGETS
@@ -462,11 +1005,26 @@ else
 installhdrs : installhdrsint
 endif
        
-installhdrsint : $(OBJROOT)/Makefile
-       (cd $(OBJROOT); \
+installhdrsint : $(OBJROOT_CURRENT)/Makefile
+       (cd $(OBJROOT_CURRENT); \
                for subdir in $(HDR_MAKE_SUBDIR); do \
                        (cd $$subdir; $(MAKE) -e DESTDIR=$(DEST_ROOT) $(ENV) install-headers); \
                done; \
+               if test "$(APPLE_EMBEDDED)" = "YES"; then \
+                       if test ! -d $(DEST_ROOT)$(HDR_PREFIX)/include/unicode/; then \
+                               $(INSTALL) -d -m 0755 $(DEST_ROOT)$(HDR_PREFIX)/include/unicode/; \
+                       fi; \
+                       if test -d $(DEST_ROOT)$(PRIVATE_HDR_PREFIX)/include/unicode/; then \
+                               (cd $(DEST_ROOT)$(PRIVATE_HDR_PREFIX)/include/unicode; \
+                                       for i in *.h; do \
+                                               if fgrep -q -x $$i $(SRCROOT)/minimalapis.txt ; then \
+                                                       mv $$i $(DEST_ROOT)$(HDR_PREFIX)/include/unicode ; \
+                                               fi ; \
+                                       done ); \
+                               $(CC) $(SRCROOT)/minimalapisTest.c $(INSTALLHDRS_ARCH) $(ISYSROOT) -nostdinc \
+                                       -I $(DEST_ROOT)$(HDR_PREFIX)/include/ -I $(SDKROOTMOD)/usr/include/ -E > /dev/null ; \
+                       fi; \
+               fi; \
        );
 
 # We run configure and run make first. This generates the .o files. We then link them 
@@ -475,37 +1033,53 @@ installhdrsint : $(OBJROOT)/Makefile
 # We cleanup the sources folder.
 
 install : installhdrsint icu
-       if test ! -d $(DEST_ROOT)$(libdir)/; then \
-               $(INSTALL) -d -m 0755 $(DEST_ROOT)$(libdir)/; \
-       fi;
        if test "$(WINDOWS)" = "YES"; then \
-               if test ! -d $(DEST_ROOT)$(winlibdir)/; then \
-                       $(INSTALL) -d -m 0755 $(DEST_ROOT)$(winlibdir)/; \
+               if test ! -d $(DEST_ROOT)$(winprogdir)/; then \
+                       $(INSTALL) -d -m 0755 $(DEST_ROOT)$(winprogdir)/; \
+               fi; \
+               if test ! -d $(DEST_ROOT)$(winintlibdir)/; then \
+                       $(INSTALL) -d -m 0755 $(DEST_ROOT)$(winintlibdir)/; \
+               fi; \
+               $(INSTALL) -b -m 0644 $(OBJROOT_CURRENT)/lib/libicuuc.lib $(DEST_ROOT)$(winintlibdir)libicuuc.lib; \
+               $(INSTALL) -b -m 0644 $(OBJROOT_CURRENT)/lib/libicuuc.pdb $(DEST_ROOT)$(winprogdir)libicuuc.pdb; \
+               $(INSTALL) -b -m 0755 $(OBJROOT_CURRENT)/lib/libicuuc.dll $(DEST_ROOT)$(winprogdir)libicuuc.dll; \
+               $(INSTALL) -b -m 0644 $(OBJROOT_CURRENT)/lib/libicuin.lib $(DEST_ROOT)$(winintlibdir)libicuin.lib; \
+               $(INSTALL) -b -m 0644 $(OBJROOT_CURRENT)/lib/libicuin.pdb $(DEST_ROOT)$(winprogdir)libicuin.pdb; \
+               $(INSTALL) -b -m 0755 $(OBJROOT_CURRENT)/lib/libicuin.dll $(DEST_ROOT)$(winprogdir)libicuin.dll; \
+               $(INSTALL) -b -m 0755 $(OBJROOT_CURRENT)/lib/icudt$(ICU_VERS).dll $(DEST_ROOT)$(winprogdir)icudt$(ICU_VERS).dll; \
+               if test "$(ARCH64)" != "YES"; then \
+                       $(INSTALL) -b -m 0644 $(OBJROOT_CURRENT)/lib/shim/icuuc.lib $(DEST_ROOT)$(winintlibdir)icuuc.lib; \
+                       $(INSTALL) -b -m 0644 $(OBJROOT_CURRENT)/lib/icuuc40.pdb $(DEST_ROOT)$(winprogdir)icuuc40.pdb; \
+                       $(INSTALL) -b -m 0755 $(OBJROOT_CURRENT)/lib/icuuc40.dll $(DEST_ROOT)$(winprogdir)icuuc40.dll; \
+                       $(INSTALL) -b -m 0644 $(OBJROOT_CURRENT)/lib/shim/icuin.lib $(DEST_ROOT)$(winintlibdir)icuin.lib; \
+                       $(INSTALL) -b -m 0644 $(OBJROOT_CURRENT)/lib/icuin40.pdb $(DEST_ROOT)$(winprogdir)icuin40.pdb; \
+                       $(INSTALL) -b -m 0755 $(OBJROOT_CURRENT)/lib/icuin40.dll $(DEST_ROOT)$(winprogdir)icuin40.dll; \
                fi; \
-               $(INSTALL) -b -m 0644 $(OBJROOT)/lib/icuuc.lib $(DEST_ROOT)$(winlibdir)icuuc.lib; \
-               $(INSTALL) -b -m 0644 $(OBJROOT)/lib/icuuc$(ICU_VERS).pdb $(DEST_ROOT)$(libdir)icuuc$(ICU_VERS).pdb; \
-               $(INSTALL) -b -m 0755 $(OBJROOT)/lib/icuuc$(ICU_VERS).dll $(DEST_ROOT)$(libdir)icuuc$(ICU_VERS).dll; \
-               $(INSTALL) -b -m 0644 $(OBJROOT)/lib/icuin.lib $(DEST_ROOT)$(winlibdir)icuin.lib; \
-               $(INSTALL) -b -m 0644 $(OBJROOT)/lib/icuin$(ICU_VERS).pdb $(DEST_ROOT)$(libdir)icuin$(ICU_VERS).pdb; \
-               $(INSTALL) -b -m 0755 $(OBJROOT)/lib/icuin$(ICU_VERS).dll $(DEST_ROOT)$(libdir)icuin$(ICU_VERS).dll; \
-               $(INSTALL) -b -m 0755 $(OBJROOT)/lib/icudt$(ICU_VERS).dll $(DEST_ROOT)$(libdir)icudt$(ICU_VERS).dll; \
        else \
-               $(INSTALL) -b -m 0664 $(OBJROOT)/$(INSTALLED_DYLIB) $(DEST_ROOT)$(libdir)$(INSTALLED_DYLIB); \
-               (cd $(DEST_ROOT)$(libdir); \
-               ln -fs  $(INSTALLED_DYLIB) $(DYLIB)); \
-               cp $(OBJROOT)/$(INSTALLED_DYLIB) $(SYMROOT)/$(INSTALLED_DYLIB); \
-               strip -x -u -r -S $(DEST_ROOT)$(libdir)$(INSTALLED_DYLIB); \
+               if test ! -d $(DEST_ROOT)$(libdir)/; then \
+                       $(INSTALL) -d -m 0755 $(DEST_ROOT)$(libdir)/; \
+               fi; \
+               $(INSTALL) -b -m 0755 $(OBJROOT_CURRENT)/$(INSTALLED_DYLIB) $(DEST_ROOT)$(libdir)$(INSTALLED_DYLIB); \
+               if test "$(LINUX)" = "YES"; then \
+                       cp $(OBJROOT_CURRENT)/$(INSTALLED_DYLIB) $(SYMROOT_CURRENT)/$(INSTALLED_DYLIB); \
+                       strip -x -S $(DEST_ROOT)$(libdir)$(INSTALLED_DYLIB); \
+               else \
+                       (cd $(DEST_ROOT)$(libdir); \
+                       ln -fs  $(INSTALLED_DYLIB) $(DYLIB)); \
+                       cp $(OBJROOT_CURRENT)/$(INSTALLED_DYLIB) $(SYMROOT_CURRENT)/$(INSTALLED_DYLIB); \
+                       if test "$(APPLE_EMBEDDED)" = "NO"; then \
+                               $(DSYMTOOL) -o $(SYMROOT_CURRENT)/$(INSTALLED_DYLIB)$(DSYMSUFFIX) $(SYMROOT_CURRENT)/$(INSTALLED_DYLIB); \
+                       fi; \
+                       $(STRIPCMD) -x -u -r -S $(DEST_ROOT)$(libdir)$(INSTALLED_DYLIB); \
+               fi; \
                for subdir in $(EXTRA_LIBS); do \
-                       (cd $(OBJROOT)/$$subdir; $(MAKE) -e DESTDIR=$(DEST_ROOT) $(ENV) install-library;) \
+                       (cd $(OBJROOT_CURRENT)/$$subdir; $(MAKE) -e DESTDIR=$(DEST_ROOT) $(ENV) install-library;) \
                done; \
-               if test ! -d $(DEST_ROOT)$(datadir)/; then \
-                       $(INSTALL) -d -m 0755 $(DEST_ROOT)$(datadir)/; \
-               fi;     \
-               if test -f $(OBJROOT)/$(B_DATA_FILE); then \
-                       $(INSTALL) -b -m 0644  $(OBJROOT)/$(B_DATA_FILE) $(DEST_ROOT)$(datadir)$(B_DATA_FILE); \
+               if test ! -d $(DEST_ROOT)$(DATA_INSTALL_DIR)/; then \
+                       $(INSTALL) -d -m 0755 $(DEST_ROOT)$(DATA_INSTALL_DIR)/; \
                fi; \
-               if test -f $(OBJROOT)/$(L_DATA_FILE); then \
-                       $(INSTALL) -b -m 0644  $(OBJROOT)/$(L_DATA_FILE) $(DEST_ROOT)$(datadir)$(L_DATA_FILE); \
+               if test -f $(OBJROOT_CURRENT)/$(L_DATA_FILE); then \
+                       $(INSTALL) -b -m 0644  $(OBJROOT_CURRENT)/$(L_DATA_FILE) $(DEST_ROOT)$(DATA_INSTALL_DIR)$(L_DATA_FILE); \
                fi; \
                if test ! -d $(DEST_ROOT)$(OPEN_SOURCE_VERSIONS_DIR)/; then \
                        $(INSTALL) -d -m 0755 $(DEST_ROOT)$(OPEN_SOURCE_VERSIONS_DIR)/; \
@@ -515,6 +1089,12 @@ install : installhdrsint icu
                        $(INSTALL) -d -m 0755 $(DEST_ROOT)$(OPEN_SOURCE_LICENSES_DIR)/; \
                fi; \
                $(INSTALL) -b -m 0644 $(SRCROOT)/license.html $(DEST_ROOT)$(OPEN_SOURCE_LICENSES_DIR)ICU.html; \
+               if test -f $(OBJROOT_CURRENT)/$(INFOTOOL); then \
+                       if test ! -d $(DEST_ROOT)$(localtooldir)/; then \
+                               $(INSTALL) -d -m 0755 $(DEST_ROOT)$(localtooldir)/; \
+                       fi; \
+                       $(INSTALL) -b -m 0755  $(OBJROOT_CURRENT)/$(INFOTOOL) $(DEST_ROOT)$(localtooldir)$(INFOTOOL); \
+               fi; \
        fi;
 
 DEPEND_install_debug = debug
@@ -522,27 +1102,35 @@ DEPEND_install_profile = profile
        
 .SECONDEXPANSION:
 install_debug install_profile : $$(DEPEND_$$@)
-       if test ! -d $(DEST_ROOT)$(libdir)/; then \
-               $(INSTALL) -d -m 0755 $(DEST_ROOT)$(libdir)/; \
-       fi;
        if test "$(WINDOWS)" = "YES"; then \
-               if test ! -d $(DEST_ROOT)$(winlibdir)/; then \
-                       $(INSTALL) -d -m 0755 $(DEST_ROOT)$(winlibdir)/; \
+               if test ! -d $(DEST_ROOT)$(winprogdir)/; then \
+                       $(INSTALL) -d -m 0755 $(DEST_ROOT)$(winprogdir)/; \
+               fi; \
+               if test ! -d $(DEST_ROOT)$(winintlibdir)/; then \
+                       $(INSTALL) -d -m 0755 $(DEST_ROOT)$(winintlibdir)/; \
                fi; \
-               $(INSTALL) -b -m 0644 $(OBJROOT)/lib/icuuc_$(DEPEND_$@).lib $(DEST_ROOT)$(winlibdir)icuuc_$(DEPEND_$@).lib; \
-               $(INSTALL) -b -m 0644 $(OBJROOT)/lib/icuuc$(ICU_VERS)_$(DEPEND_$@).pdb $(DEST_ROOT)$(libdir)icuuc$(ICU_VERS)_$(DEPEND_$@).pdb; \
-               $(INSTALL) -b -m 0755 $(OBJROOT)/lib/icuuc$(ICU_VERS)_$(DEPEND_$@).dll $(DEST_ROOT)$(libdir)icuuc$(ICU_VERS)_$(DEPEND_$@).dll; \
-               $(INSTALL) -b -m 0644 $(OBJROOT)/lib/icuin_$(DEPEND_$@).lib $(DEST_ROOT)$(winlibdir)icuin_$(DEPEND_$@).lib; \
-               $(INSTALL) -b -m 0644 $(OBJROOT)/lib/icuin$(ICU_VERS)_$(DEPEND_$@).pdb $(DEST_ROOT)$(libdir)icuin$(ICU_VERS)_$(DEPEND_$@).pdb; \
-               $(INSTALL) -b -m 0755 $(OBJROOT)/lib/icuin$(ICU_VERS)_$(DEPEND_$@).dll $(DEST_ROOT)$(libdir)icuin$(ICU_VERS)_$(DEPEND_$@).dll; \
+               $(INSTALL) -b -m 0644 $(OBJROOT_CURRENT)/lib/libicuuc_$(DEPEND_$@).lib $(DEST_ROOT)$(winintlibdir)libicuuc_$(DEPEND_$@).lib; \
+               $(INSTALL) -b -m 0644 $(OBJROOT_CURRENT)/lib/libicuuc_$(DEPEND_$@).pdb $(DEST_ROOT)$(winprogdir)libicuuc_$(DEPEND_$@).pdb; \
+               $(INSTALL) -b -m 0755 $(OBJROOT_CURRENT)/lib/libicuuc_$(DEPEND_$@).dll $(DEST_ROOT)$(winprogdir)libicuuc_$(DEPEND_$@).dll; \
+               $(INSTALL) -b -m 0644 $(OBJROOT_CURRENT)/lib/libicuin_$(DEPEND_$@).lib $(DEST_ROOT)$(winintlibdir)libicuin_$(DEPEND_$@).lib; \
+               $(INSTALL) -b -m 0644 $(OBJROOT_CURRENT)/lib/libicuin_$(DEPEND_$@).pdb $(DEST_ROOT)$(winprogdir)libicuin_$(DEPEND_$@).pdb; \
+               $(INSTALL) -b -m 0755 $(OBJROOT_CURRENT)/lib/libicuin_$(DEPEND_$@).dll $(DEST_ROOT)$(winprogdir)libicuin_$(DEPEND_$@).dll; \
        else \
-               $(INSTALL) -b -m 0664 $(OBJROOT)/$($(INSTALLED_DYLIB_$(DEPEND_$@))) $(DEST_ROOT)$(libdir)$($(INSTALLED_DYLIB_$(DEPEND_$@))); \
-               (cd $(DEST_ROOT)$(libdir); \
-               ln -fs  $($(INSTALLED_DYLIB_$(DEPEND_$@))) $($(DYLIB_$(DEPEND_$@)))); \
-               cp $(OBJROOT)/$($(INSTALLED_DYLIB_$(DEPEND_$@))) $(SYMROOT)/$($(INSTALLED_DYLIB_$(DEPEND_$@))); \
-               strip -x -u -r -S $(DEST_ROOT)$(libdir)$($(INSTALLED_DYLIB_$(DEPEND_$@))); \
+               if test ! -d $(DEST_ROOT)$(libdir)/; then \
+                       $(INSTALL) -d -m 0755 $(DEST_ROOT)$(libdir)/; \
+               fi; \
+               $(INSTALL) -b -m 0664 $(OBJROOT_CURRENT)/$($(INSTALLED_DYLIB_$(DEPEND_$@))) $(DEST_ROOT)$(libdir)$($(INSTALLED_DYLIB_$(DEPEND_$@))); \
+               if test "$(LINUX)" = "YES"; then \
+                       cp $(OBJROOT_CURRENT)/$($(INSTALLED_DYLIB_$(DEPEND_$@))) $(SYMROOT_CURRENT)/$($(INSTALLED_DYLIB_$(DEPEND_$@))); \
+                       strip -x -S $(DEST_ROOT)$(libdir)$($(INSTALLED_DYLIB_$(DEPEND_$@))); \
+               else \
+                       (cd $(DEST_ROOT)$(libdir); \
+                       ln -fs  $($(INSTALLED_DYLIB_$(DEPEND_$@))) $($(DYLIB_$(DEPEND_$@)))); \
+                       cp $(OBJROOT_CURRENT)/$($(INSTALLED_DYLIB_$(DEPEND_$@))) $(SYMROOT_CURRENT)/$($(INSTALLED_DYLIB_$(DEPEND_$@))); \
+                       $(STRIPCMD) -x -u -r -S $(DEST_ROOT)$(libdir)$($(INSTALLED_DYLIB_$(DEPEND_$@))); \
+               fi; \
                for subdir in $(EXTRA_LIBS); do \
-                       (cd $(OBJROOT)/$$subdir; $(MAKE) -e DESTDIR=$(DEST_ROOT) $(ENV) install-library;) \
+                       (cd $(OBJROOT_CURRENT)/$$subdir; $(MAKE) -e DESTDIR=$(DEST_ROOT) $(ENV) install-library;) \
                done; \
        fi;