[icu] Fix wasm, fix icudt for almost-native builds (#35529)

ports/icu/portfile.cmake

@@ -19,11 +19,22 @@ vcpkg_extract_source_archive(SOURCE_PATH
         mingw-dll-install.patch
         disable-static-prefix.patch # https://gitlab.kitware.com/cmake/cmake/-/issues/16617; also mingw.
         fix-win-build.patch
+        vcpkg-cross-data.patch
 )
 
 vcpkg_find_acquire_program(PYTHON3)
 set(ENV{PYTHON} "${PYTHON3}")
 
+vcpkg_list(SET CONFIGURE_OPTIONS)
+vcpkg_list(SET CONFIGURE_OPTIONS_RELEASE)
+vcpkg_list(SET CONFIGURE_OPTIONS_DEBUG)
+vcpkg_list(SET BUILD_OPTIONS)
+
+if(VCPKG_TARGET_IS_EMSCRIPTEN)
+    vcpkg_list(APPEND CONFIGURE_OPTIONS --disable-extras)
+    vcpkg_list(APPEND BUILD_OPTIONS "PKGDATA_OPTS=--without-assembly -O ../data/icupkg.inc")
+endif()
+
 if(VCPKG_TARGET_IS_WINDOWS)
     list(APPEND CONFIGURE_OPTIONS --enable-icu-build-win)
 endif()
@@ -144,7 +155,7 @@ if(VCPKG_TARGET_IS_OSX AND VCPKG_LIBRARY_LINKAGE STREQUAL "dynamic")
 
 endif()
 
-vcpkg_install_make()
+vcpkg_install_make(OPTIONS ${BUILD_OPTIONS})
 
 file(REMOVE_RECURSE
     "${CURRENT_PACKAGES_DIR}/share"

ports/icu/vcpkg-cross-data.patch

@@ -0,0 +1,13 @@
+diff --git a/source/configure.ac b/source/configure.ac
+index 1bd5871..c508f48 100644
+--- a/source/configure.ac
++++ b/source/configure.ac
+@@ -1151,7 +1151,7 @@ AC_ARG_ENABLE(fuzzer,
+ 	fuzzer=false)
+ ICU_CONDITIONAL(FUZZER, test "$fuzzer" = true)
+ 
+-ICU_CONDITIONAL(DATA, test "$tools" = true || test "$cross_compiling" = "yes")
++ICU_CONDITIONAL(DATA, test "$tools" = true || test "$cross_compiling" = "yes" || test -n "$cross_buildroot")
+ 
+ AC_ARG_WITH(data-packaging,
+ 	[  --with-data-packaging     specify how to package ICU data. Possible values:

ports/icu/vcpkg.json

@@ -1,7 +1,7 @@
 {
   "name": "icu",
   "version": "73.1",
-  "port-version": 1,
+  "port-version": 2,
   "description": "Mature and widely used Unicode and localization library.",
   "homepage": "https://icu.unicode.org/home",
   "license": "ICU",

versions/baseline.json

@@ -3386,7 +3386,7 @@
     },
     "icu": {
       "baseline": "73.1",
-      "port-version": 1
+      "port-version": 2
     },
     "ideviceinstaller": {
       "baseline": "2023-07-21",

versions/i-/icu.json

@@ -1,5 +1,10 @@
 {
   "versions": [
+    {
+      "git-tree": "b6ac20c2420a4f7118d5db326c8c599e50b2c5a4",
+      "version": "73.1",
+      "port-version": 2
+    },
     {
       "git-tree": "deb5694d7965a264d6eb579df49aff4fe6362c24",
       "version": "73.1",