Add icudt.dll for Windows

README.chromium

 Name: icu
 URL: http://site.icu-project.org/
 Version: 52.1
 License: MIT
 Security Critical: yes
 
 Description:
 This directory contains the source code of ICU 52.1 for C/C++
 
 1. It was obtained with the following:
@@ skipping 127 matching lines @@
 
   - patches/wpo.patch
     Upstream bugs : http://bugs.icu-project.org/trac/ticket/8043
                     http://bugs.icu-project.org/trac/ticket/5701
   - patches/vscomp.patch for building with Visual Studio on Windows.
      a. do not use WINDOWS_LOCALE_API in locmap.c
      b. do not redefine stringpiece::npos
   - patches/data.build.patch :
       Remove unnecessary resources : invuca, unames, collator source, stringprep
   - patches/data.build.win.patch :
-      Windows-only data build patch. Add a new target DATALIB to makedata.mak
-  - add an empty file (stubdatabuilt.txt) to source/stubdata
+      Windows-only data build patch.
 
 9. Pre-built data files are checked in with the following steps on Linux:
 
     a. Make a icu data build directory outside the Chromium source tree 
        and cd to that directory.
     b. Run 
 
       ${CHROME_ICU_TREE_TOP}/source/runConfigureICU Linux --disable-layout
 
     c. Run 'make'
     d. 'make' will fail in the 1st pass. Copy 
        ${CHROME_ICU_TREE_TOP}/source/data/in/coll/invuca.icu
        to {BUILD_DIR_ROOT}/data/out/build/icudt52l/coll and re-run 'make'
        in {BUILD_DIR_ROOT}/data.
 
     e. 'make' will fail again when pkgdata looks for css3transform.res. Edit
     data/out/tmp/icudata.lst to replace 'css3transform.res' with 'root.res'.
     (see http://bugs.icu-project.org/trac/ticket/10570 ) and run 'make' again.
 
 
     - source/data/in/icudtl.dat : Built on Linux with all the patches
       above applied. icudt52l.dat is generated in
       {BUILD_DIR_ROOT}/data/out/tmp and copied to the above location with a
       version number (52) dropped.
 
-    - windows/icudt.dll : With icudt52l.dat in place, all the patches applied
-      and header files moved (#11 below), generated by building icudt_build
-      project of build/icudt_build.sln on Windows. icudt52.dll is
-      generated in bin/{Release,Debug} and copied to windows/icudt.dll
-      and checked in. Note that we drop the version number ('52') from the
-      dll name to avoind having to update our build scripts/configuration
-      files everytime ICU is upgraded to a new version.
 
     - {mac,linux}/icudtl_dat.S : Built on Linux with all the
       patches above (except android/brkitr.patch) applied and checked in.
       This file will be generated in {BUILD_DIR_ROOT}/data/out/tmp as
       icudt52l_dat.S, but '52' is dropped while copying.
 
-      mac/icudtl_dat.S is identical to linux/icudtl_dat.S. It's made
-      by changing the header portion of the Linux version to read as following
-      (no leading whitespace) :
-
-          .globl _icudt52_dat
-          #ifdef U_HIDE_DATA_SYMBOL
-                 .private_extern _icudt52_dat
-          #endif
-                 .data
-                 .const
-                 .align 4
-          _icudt52_dat:
-
+      mac/icudtl_dat.S is identical to linux/icudtl_dat.S except for
+      the header portion. With "linux/icudtl_dat.S" in its place, 
+      run scripts/make_mac_assembly.sh to generate it.
 
     - android/icudtl_dat.S : Built on Linux with all the patches above and
       android/brkitr.patch applied and android/patch_locale.sh executed.
       '52' is dropped from the name generated in the build tree.
 
     - android/icudtl.dat : Generated as icudt52l.dat in
       {BUILD_DIR_ROOT}/data/out/tmp along with icudt52l_dat.S and
       copied to the above location with '52' dropped in its name.
 
+    - windows/icudt.dll (by default, we set icu_use_icu_data_flag to 1
+      and don't use this file.) 
+
+      a. check out a clean copy of icu52  from the upstream on Windows
+         outside the Chrome tree.
+
+        $ svn export --native-eol LF http://source.icu-project.org/repos/icu/icu/tags/release-52-1 ${SEPARATE_ICU_ROOT}/icu52
+
+      b. copy ${CHROME_ICU_ROOT}/source/data/in/icudtl.dat to 
+         ${SEPARATE_ICU_ROOT}/source/data/in/icudt52l.dat
+      c. copy ${CHROME_ICU_ROOT}/source/data/makedata.mak to
+         ${SEPARATE_ICU_ROOT}/source/data/makedata.mak
+      c. In Visual Studio, open source/allinone/allinone.sln solution
+         in ${SEPARATE_ICU_ROOT}
+      d. Build 'makedata' target 
+      e. icudt52.dll will be generated in ${SEPARATE_ICU_ROOT}/bin
+      f. Copy that icudt52.dll to ${CHROME_ICU_ROOT}/windows/icudt.dll 
+         and check that in.
+
 
 10. Change export of U_ICUDATA_ENTRY_POINT from U_IMPORT to U_EXPORT.
     - patches/declspec.patch