diff --git a/PolkitQt-1Config.cmake.in b/PolkitQt-1Config.cmake.in
index e09678c..57d465a 100644
--- a/PolkitQt-1Config.cmake.in
+++ b/PolkitQt-1Config.cmake.in
@@ -20,9 +20,9 @@ if(NOT POLKITQT-1_INSTALL_DIR)
    set(POLKITQT-1_INSTALL_DIR "@CMAKE_INSTALL_PREFIX@")
 endif(NOT POLKITQT-1_INSTALL_DIR)
 
-set_and_check(POLKITQT-1_INCLUDE_DIR "@PACKAGE_CMAKE_INSTALL_INCLUDEDIR@/@POLKITQT-1_INCLUDE_PATH@")
+set_and_check(POLKITQT-1_INCLUDE_DIR "@CMAKE_INSTALL_FULL_INCLUDEDIR@/@POLKITQT-1_INCLUDE_PATH@")
 set_and_check(POLKITQT-1_INCLUDE_DIRS "${POLKITQT-1_INCLUDE_DIR}")
-set_and_check(POLKITQT-1_LIB_DIR "@PACKAGE_CMAKE_INSTALL_LIBDIR@")
+set_and_check(POLKITQT-1_LIB_DIR "@CMAKE_INSTALL_FULL_LIBDIR@")
 set(POLKITQT-1_POLICY_FILES_INSTALL_DIR "${POLKITQT-1_INSTALL_DIR}/share/polkit-1/actions")
 ##################################
 
diff --git a/polkit-qt-1.pc.cmake b/polkit-qt-1.pc.cmake
index ba8e46e..2d7ea64 100644
--- a/polkit-qt-1.pc.cmake
+++ b/polkit-qt-1.pc.cmake
@@ -1,7 +1,7 @@
 prefix=@CMAKE_INSTALL_PREFIX@
 exec_prefix=@CMAKE_INSTALL_PREFIX@
-libdir=${exec_prefix}/@CMAKE_INSTALL_LIBDIR@
-includedir=${prefix}/@CMAKE_INSTALL_INCLUDEDIR@/@POLKITQT-1_INCLUDE_PATH@
+libdir=@CMAKE_INSTALL_FULL_LIBDIR@
+includedir=@CMAKE_INSTALL_FULL_INCLUDEDIR@/@POLKITQT-1_INCLUDE_PATH@
 
 Name: @POLKITQT-1_PCNAME@
 Description: Convenience library for using polkit with a Qt-styled API
diff --git a/polkit-qt-agent-1.pc.cmake b/polkit-qt-agent-1.pc.cmake
index 23b2cae..86670a7 100644
--- a/polkit-qt-agent-1.pc.cmake
+++ b/polkit-qt-agent-1.pc.cmake
@@ -1,7 +1,7 @@
 prefix=@CMAKE_INSTALL_PREFIX@
 exec_prefix=@CMAKE_INSTALL_PREFIX@
-libdir=${exec_prefix}/@CMAKE_INSTALL_LIBDIR@
-includedir=${prefix}/@CMAKE_INSTALL_INCLUDEDIR@/@POLKITQT-1_INCLUDE_PATH@
+libdir=@CMAKE_INSTALL_FULL_LIBDIR@
+includedir=@CMAKE_INSTALL_FULL_INCLUDEDIR@/@POLKITQT-1_INCLUDE_PATH@
 
 Name: @POLKITQT-1_AGENT_PCNAME@
 Description: Convenience library for using polkit Agent with a Qt-styled API
diff --git a/polkit-qt-core-1.pc.cmake b/polkit-qt-core-1.pc.cmake
index fa501f0..61faa63 100644
--- a/polkit-qt-core-1.pc.cmake
+++ b/polkit-qt-core-1.pc.cmake
@@ -1,7 +1,7 @@
 prefix=@CMAKE_INSTALL_PREFIX@
 exec_prefix=@CMAKE_INSTALL_PREFIX@
-libdir=${exec_prefix}/@CMAKE_INSTALL_LIBDIR@
-includedir=${prefix}/@CMAKE_INSTALL_INCLUDEDIR@/@POLKITQT-1_INCLUDE_PATH@
+libdir=@CMAKE_INSTALL_FULL_LIBDIR@
+includedir=@CMAKE_INSTALL_FULL_INCLUDEDIR@/@POLKITQT-1_INCLUDE_PATH@
 
 Name: @POLKITQT-1_CORE_PCNAME@
 Description: Convenience library for using polkit with a Qt-styled API, non-GUI classes
diff --git a/polkit-qt-gui-1.pc.cmake b/polkit-qt-gui-1.pc.cmake
index 7261b0c..8c633bb 100644
--- a/polkit-qt-gui-1.pc.cmake
+++ b/polkit-qt-gui-1.pc.cmake
@@ -1,7 +1,7 @@
 prefix=@CMAKE_INSTALL_PREFIX@
 exec_prefix=@CMAKE_INSTALL_PREFIX@
-libdir=${exec_prefix}/@CMAKE_INSTALL_LIBDIR@
-includedir=${prefix}/@CMAKE_INSTALL_INCLUDEDIR@/@POLKITQT-1_INCLUDE_PATH@
+libdir=@CMAKE_INSTALL_FULL_LIBDIR@
+includedir=@CMAKE_INSTALL_FULL_INCLUDEDIR@/@POLKITQT-1_INCLUDE_PATH@
 
 Name: @POLKITQT-1_GUI_PCNAME@
 Description: Convenience library for using polkit with a Qt-styled API, GUI classes
diff --git a/polkit-qt5-1.pc.cmake b/polkit-qt5-1.pc.cmake
index ba8e46e..2d7ea64 100644
--- a/polkit-qt5-1.pc.cmake
+++ b/polkit-qt5-1.pc.cmake
@@ -1,7 +1,7 @@
 prefix=@CMAKE_INSTALL_PREFIX@
 exec_prefix=@CMAKE_INSTALL_PREFIX@
-libdir=${exec_prefix}/@CMAKE_INSTALL_LIBDIR@
-includedir=${prefix}/@CMAKE_INSTALL_INCLUDEDIR@/@POLKITQT-1_INCLUDE_PATH@
+libdir=@CMAKE_INSTALL_FULL_LIBDIR@
+includedir=@CMAKE_INSTALL_FULL_INCLUDEDIR@/@POLKITQT-1_INCLUDE_PATH@
 
 Name: @POLKITQT-1_PCNAME@
 Description: Convenience library for using polkit with a Qt-styled API
diff --git a/polkit-qt5-agent-1.pc.cmake b/polkit-qt5-agent-1.pc.cmake
index 60b22d5..ee8b80b 100644
--- a/polkit-qt5-agent-1.pc.cmake
+++ b/polkit-qt5-agent-1.pc.cmake
@@ -1,7 +1,7 @@
 prefix=@CMAKE_INSTALL_PREFIX@
 exec_prefix=@CMAKE_INSTALL_PREFIX@
-libdir=${exec_prefix}/@CMAKE_INSTALL_LIBDIR@
-includedir=${prefix}/@CMAKE_INSTALL_INCLUDEDIR@/@POLKITQT-1_INCLUDE_PATH@
+libdir=@CMAKE_INSTALL_FULL_LIBDIR@
+includedir=@CMAKE_INSTALL_FULL_INCLUDEDIR@/@POLKITQT-1_INCLUDE_PATH@
 
 Name: @POLKITQT-1_AGENT_PCNAME@
 Description: Convenience library for using polkit Agent with a Qt-styled API
diff --git a/polkit-qt5-core-1.pc.cmake b/polkit-qt5-core-1.pc.cmake
index 2f5d562..387c64b 100644
--- a/polkit-qt5-core-1.pc.cmake
+++ b/polkit-qt5-core-1.pc.cmake
@@ -1,7 +1,7 @@
 prefix=@CMAKE_INSTALL_PREFIX@
 exec_prefix=@CMAKE_INSTALL_PREFIX@
-libdir=${exec_prefix}/@CMAKE_INSTALL_LIBDIR@
-includedir=${prefix}/@CMAKE_INSTALL_INCLUDEDIR@/@POLKITQT-1_INCLUDE_PATH@
+libdir=@CMAKE_INSTALL_FULL_LIBDIR@
+includedir=@CMAKE_INSTALL_FULL_INCLUDEDIR@/@POLKITQT-1_INCLUDE_PATH@
 
 Name: @POLKITQT-1_CORE_PCNAME@
 Description: Convenience library for using polkit with a Qt-styled API, non-GUI classes
diff --git a/polkit-qt5-gui-1.pc.cmake b/polkit-qt5-gui-1.pc.cmake
index 1d208fb..dd95f52 100644
--- a/polkit-qt5-gui-1.pc.cmake
+++ b/polkit-qt5-gui-1.pc.cmake
@@ -1,7 +1,7 @@
 prefix=@CMAKE_INSTALL_PREFIX@
 exec_prefix=@CMAKE_INSTALL_PREFIX@
-libdir=${exec_prefix}/@CMAKE_INSTALL_LIBDIR@
-includedir=${prefix}/@CMAKE_INSTALL_INCLUDEDIR@/@POLKITQT-1_INCLUDE_PATH@
+libdir=@CMAKE_INSTALL_FULL_LIBDIR@
+includedir=@CMAKE_INSTALL_FULL_INCLUDEDIR@/@POLKITQT-1_INCLUDE_PATH@
 
 Name: @POLKITQT-1_GUI_PCNAME@
 Description: Convenience library for using polkit with a Qt-styled API, GUI classes
diff --git a/polkit-qt6-1.pc.cmake b/polkit-qt6-1.pc.cmake
index ba8e46e..2d7ea64 100644
--- a/polkit-qt6-1.pc.cmake
+++ b/polkit-qt6-1.pc.cmake
@@ -1,7 +1,7 @@
 prefix=@CMAKE_INSTALL_PREFIX@
 exec_prefix=@CMAKE_INSTALL_PREFIX@
-libdir=${exec_prefix}/@CMAKE_INSTALL_LIBDIR@
-includedir=${prefix}/@CMAKE_INSTALL_INCLUDEDIR@/@POLKITQT-1_INCLUDE_PATH@
+libdir=@CMAKE_INSTALL_FULL_LIBDIR@
+includedir=@CMAKE_INSTALL_FULL_INCLUDEDIR@/@POLKITQT-1_INCLUDE_PATH@
 
 Name: @POLKITQT-1_PCNAME@
 Description: Convenience library for using polkit with a Qt-styled API
diff --git a/polkit-qt6-agent-1.pc.cmake b/polkit-qt6-agent-1.pc.cmake
index 60b22d5..ee8b80b 100644
--- a/polkit-qt6-agent-1.pc.cmake
+++ b/polkit-qt6-agent-1.pc.cmake
@@ -1,7 +1,7 @@
 prefix=@CMAKE_INSTALL_PREFIX@
 exec_prefix=@CMAKE_INSTALL_PREFIX@
-libdir=${exec_prefix}/@CMAKE_INSTALL_LIBDIR@
-includedir=${prefix}/@CMAKE_INSTALL_INCLUDEDIR@/@POLKITQT-1_INCLUDE_PATH@
+libdir=@CMAKE_INSTALL_FULL_LIBDIR@
+includedir=@CMAKE_INSTALL_FULL_INCLUDEDIR@/@POLKITQT-1_INCLUDE_PATH@
 
 Name: @POLKITQT-1_AGENT_PCNAME@
 Description: Convenience library for using polkit Agent with a Qt-styled API
diff --git a/polkit-qt6-core-1.pc.cmake b/polkit-qt6-core-1.pc.cmake
index 2f5d562..387c64b 100644
--- a/polkit-qt6-core-1.pc.cmake
+++ b/polkit-qt6-core-1.pc.cmake
@@ -1,7 +1,7 @@
 prefix=@CMAKE_INSTALL_PREFIX@
 exec_prefix=@CMAKE_INSTALL_PREFIX@
-libdir=${exec_prefix}/@CMAKE_INSTALL_LIBDIR@
-includedir=${prefix}/@CMAKE_INSTALL_INCLUDEDIR@/@POLKITQT-1_INCLUDE_PATH@
+libdir=@CMAKE_INSTALL_FULL_LIBDIR@
+includedir=@CMAKE_INSTALL_FULL_INCLUDEDIR@/@POLKITQT-1_INCLUDE_PATH@
 
 Name: @POLKITQT-1_CORE_PCNAME@
 Description: Convenience library for using polkit with a Qt-styled API, non-GUI classes
diff --git a/polkit-qt6-gui-1.pc.cmake b/polkit-qt6-gui-1.pc.cmake
index 1d208fb..dd95f52 100644
--- a/polkit-qt6-gui-1.pc.cmake
+++ b/polkit-qt6-gui-1.pc.cmake
@@ -1,7 +1,7 @@
 prefix=@CMAKE_INSTALL_PREFIX@
 exec_prefix=@CMAKE_INSTALL_PREFIX@
-libdir=${exec_prefix}/@CMAKE_INSTALL_LIBDIR@
-includedir=${prefix}/@CMAKE_INSTALL_INCLUDEDIR@/@POLKITQT-1_INCLUDE_PATH@
+libdir=@CMAKE_INSTALL_FULL_LIBDIR@
+includedir=@CMAKE_INSTALL_FULL_INCLUDEDIR@/@POLKITQT-1_INCLUDE_PATH@
 
 Name: @POLKITQT-1_GUI_PCNAME@
 Description: Convenience library for using polkit with a Qt-styled API, GUI classes