Clang: Move 'disable_external_rpath' to clang_installation.pri

It should be required for every project part which
depends on LLVM.

Change-Id: I8d645661dfa4fc4858bb40e156671a0ecf0bdbe3
Reviewed-by: Christian Stenger <christian.stenger@qt.io>

src/shared/clang/clang_installation.pri

@@ -172,4 +172,9 @@ isEmpty(LLVM_VERSION) {
     LLVM_CXXFLAGS ~= s,-gsplit-dwarf,
 
     LLVM_IS_COMPILED_WITH_RTTI = $$system($$llvm_config --has-rtti, lines)
+
+    unix:!disable_external_rpath:!contains(QMAKE_DEFAULT_LIBDIRS, $${LLVM_LIBDIR}) {
+        !macos: QMAKE_LFLAGS += -Wl,-z,origin
+        QMAKE_LFLAGS += -Wl,-rpath,$$shell_quote($${LLVM_LIBDIR})
+    }
 }

src/tools/clangbackend/clangbackend.pro

@@ -18,8 +18,3 @@ SOURCES += clangbackendmain.cpp
 
 HEADERS += ../qtcreatorcrashhandler/crashhandlersetup.h
 SOURCES += ../qtcreatorcrashhandler/crashhandlersetup.cpp
-
-unix:!disable_external_rpath:!contains(QMAKE_DEFAULT_LIBDIRS, $${LLVM_LIBDIR}) {
-    !osx: QMAKE_LFLAGS += -Wl,-z,origin
-    QMAKE_LFLAGS += -Wl,-rpath,$$shell_quote($${LLVM_LIBDIR})
-}

src/tools/clangpchmanagerbackend/clangpchmanagerbackend.pro

@@ -27,10 +27,4 @@ SOURCES += \
     ../clangrefactoringbackend/source/clangtool.cpp \
     ../clangrefactoringbackend/source/refactoringcompilationdatabase.cpp
 
-
-unix:!disable_external_rpath:!contains(QMAKE_DEFAULT_LIBDIRS, $${LLVM_LIBDIR}) {
-    !macx: QMAKE_LFLAGS += -Wl,-z,origin
-    QMAKE_LFLAGS += -Wl,-rpath,$$shell_quote($${LLVM_LIBDIR})
-}
-
 DEFINES += CLANG_COMPILER_PATH=\"R\\\"xxx($${LLVM_BINDIR}/clang)xxx\\\"\"

src/tools/clangrefactoringbackend/clangrefactoringbackend.pro

@@ -22,8 +22,3 @@ QMAKE_CXXFLAGS += $$LLVM_CXXFLAGS
 
 SOURCES += \
     clangrefactoringbackendmain.cpp
-
-unix:!disable_external_rpath:!contains(QMAKE_DEFAULT_LIBDIRS, $$LLVM_LIBDIR) {
-    !osx: QMAKE_LFLAGS += -Wl,-z,origin
-    QMAKE_LFLAGS += -Wl,-rpath,$$shell_quote($${LLVM_LIBDIR})
-}