diff --git a/cmake/PkgConfigLibrary.pc.in b/cmake/PkgConfigLibrary.pc.in
index b840e79e794..5a6665c85c5 100644
--- a/cmake/PkgConfigLibrary.pc.in
+++ b/cmake/PkgConfigLibrary.pc.in
@@ -1,4 +1,4 @@
-prefix=@CMAKE_INSTALL_PREFIX@
+prefix=${pcfiledir}/@relative_install_prefix@
 exec_prefix=${prefix}
 bindir=${prefix}/@INSTALL_BINDIR@
 libexecdir=${prefix}/@INSTALL_LIBEXECDIR@
diff --git a/cmake/QtPkgConfigHelpers.cmake b/cmake/QtPkgConfigHelpers.cmake
index 2790498bf2c..a0eff0d6a2c 100644
--- a/cmake/QtPkgConfigHelpers.cmake
+++ b/cmake/QtPkgConfigHelpers.cmake
@@ -125,6 +125,9 @@ function(qt_internal_generate_pkg_config_file module)
     qt_path_join(pc_step1_path "${build_dir}" ${step_prefix}_step1.pc)
     qt_path_join(pc_step2_path "${build_dir}" ${step_prefix}_$<CONFIG>_step2.pc)
 
+    file(RELATIVE_PATH relative_install_prefix "/${path_suffix}" "/foo")
+    get_filename_component(relative_install_prefix "${relative_install_prefix}" DIRECTORY)
+
     configure_file("${template_pc}" "${pc_step1_path}" @ONLY)
 
     file(GENERATE OUTPUT "${pc_step2_path}" INPUT "${pc_step1_path}")