File 005-botan_pkgconfig_check-4.5.0.patch of Package qtcreator

diff -uprN qt-creator-opensource-src-4.5.0-orig/src/libs/3rdparty/botan/botan.pri qt-creator-opensource-src-4.5.0/src/libs/3rdparty/botan/botan.pri
--- qt-creator-opensource-src-4.5.0-orig/src/libs/3rdparty/botan/botan.pri	2017-12-01 11:22:06.000000000 +0100
+++ qt-creator-opensource-src-4.5.0/src/libs/3rdparty/botan/botan.pri	2018-02-28 21:13:16.292199316 +0100
@@ -2,9 +2,11 @@ INCLUDEPATH *= $$PWD/..
 HEADERS += $$PWD/botan.h
 
 equals(USE_SYSTEM_BOTAN, 1) {
-    DEFINES += USE_SYSTEM_BOTAN
-    CONFIG += link_pkgconfig
-    PKGCONFIG += botan-1.10
+    packagesExist(botan-1.10) {
+        DEFINES += USE_SYSTEM_BOTAN
+        CONFIG += link_pkgconfig
+        PKGCONFIG += botan-1.10
+    }
 } else {
 
 SOURCES += $$PWD/botan.cpp