Introduce icu_dependency.pri

Simply to hide the magic bahind the scenes.

Change-Id: I69a159eb14712e68117f10e78745bdfbad46b6f2
Reviewed-by: Oswald Buddenhagen <oswald.buddenhagen@theqtcompany.com>

config.tests/unix/icu/icu.pro

@@ -2,16 +2,4 @@ SOURCES = icu.cpp
 CONFIG += console
 CONFIG -= qt dylib
 
-win32 {
+include($$PWD/../../../src/3rdparty/icu_dependency.pri)
-    CONFIG(static, static|shared) {
-        CONFIG(debug, debug|release) {
-            LIBS += -lsicuind -lsicuucd -lsicudtd
-        } else {
-            LIBS += -lsicuin -lsicuuc -lsicudt
-        }
-    } else {
-        LIBS += -licuin -licuuc -licudt
-    }
-} else {
-    LIBS += -licui18n -licuuc -licudata
-}

src/3rdparty/icu_dependency.pri

@@ -0,0 +1,13 @@
+win32 {
+    CONFIG(static, static|shared) {
+        CONFIG(debug, debug|release) {
+            LIBS_PRIVATE += -lsicuind -lsicuucd -lsicudtd
+        } else {
+            LIBS_PRIVATE += -lsicuin -lsicuuc -lsicudt
+        }
+    } else {
+        LIBS_PRIVATE += -licuin -licuuc -licudt
+    }
+} else {
+    LIBS_PRIVATE += -licui18n -licuuc -licudata
+}

src/corelib/tools/tools.pri

@@ -161,23 +161,12 @@ contains(QT_CONFIG, zlib) {
 }
 
 contains(QT_CONFIG,icu) {
+    include($$PWD/../../3rdparty/icu_dependency.pri)
+
     SOURCES += tools/qlocale_icu.cpp \
                tools/qcollator_icu.cpp \
                tools/qtimezoneprivate_icu.cpp
     DEFINES += QT_USE_ICU
-    win32 {
-        CONFIG(static, static|shared) {
-            CONFIG(debug, debug|release) {
-                LIBS_PRIVATE += -lsicuind -lsicuucd -lsicudtd
-            } else {
-                LIBS_PRIVATE += -lsicuin -lsicuuc -lsicudt
-            }
-        } else {
-            LIBS_PRIVATE += -licuin -licuuc -licudt
-        }
-    } else {
-        LIBS_PRIVATE += -licui18n -licuuc -licudata
-    }
 } else: win32 {
     SOURCES += tools/qcollator_win.cpp
 } else: macx {