fix links for icu4c

packages/i/icu4c/xmake.lua

@@ -1,7 +1,7 @@
 package("icu4c")
 
     set_homepage("https://ssl.icu-project.org/")
-    set_description("C/C++ and Java libraries for Unicode and globalization.")
+    set_description("C/C++ libraries for Unicode and globalization.")
 
     add_urls("https://ssl.icu-project.org/files/icu4c/$(version)-src.tgz", {version = function (version)
             return version .. "/icu4c-" .. (version:gsub("%.", "_"))
@@ -13,6 +13,9 @@ package("icu4c")
     add_versions("64.2", "627d5d8478e6d96fc8c90fed4851239079a561a6a8b9e48b0892f24e82d31d6c")
 
     add_links("icuuc", "icutu", "icui18n", "icuio", "icudata")
+    if is_plat("linux") then
+        add_syslinks("dl")
+    end
 
     on_install("macosx", "linux", function (package)
         os.cd("source")