diff -Nru a/CMakeLists.txt b/CMakeLists.txt
--- a/CMakeLists.txt	2019-01-06 20:09:30.000000000 +0100
+++ b/CMakeLists.txt	2019-01-14 07:13:12.287934291 +0100
@@ -666,8 +666,8 @@
 configure_file(${CMAKE_CURRENT_SOURCE_DIR}/libvncclient.pc.cmakein ${CMAKE_CURRENT_BINARY_DIR}/libvncclient.pc @ONLY)
 
 
-install_targets(/lib vncserver)
-install_targets(/lib vncclient)
+install_targets(/${lib} vncserver)
+install_targets(/${lib} vncclient)
 install_files(/include/rfb FILES
     rfb/keysym.h
     rfb/rfb.h
@@ -677,7 +677,7 @@
     rfb/rfbregion.h
 )
 
-install_files(/lib/pkgconfig FILES
+install_files(/${lib}/pkgconfig FILES
     libvncserver.pc
     libvncclient.pc
 )
diff -Nru a/libvncclient.pc.cmakein b/libvncclient.pc.cmakein
--- a/libvncclient.pc.cmakein	2019-01-06 20:09:30.000000000 +0100
+++ b/libvncclient.pc.cmakein	2019-01-14 07:17:32.569550206 +0100
@@ -1,6 +1,6 @@
 prefix=@CMAKE_INSTALL_PREFIX@
 exec_prefix=@CMAKE_INSTALL_PREFIX@
-libdir=@CMAKE_INSTALL_PREFIX@/lib
+libdir=@CMAKE_INSTALL_LIBDIR@
 includedir=@CMAKE_INSTALL_PREFIX@/include
 
 Name: LibVNCClient
diff -Nru a/libvncserver.pc.cmakein b/libvncserver.pc.cmakein
--- a/libvncserver.pc.cmakein	2019-01-06 20:09:30.000000000 +0100
+++ b/libvncserver.pc.cmakein	2019-01-14 07:17:50.633662256 +0100
@@ -1,6 +1,6 @@
 prefix=@CMAKE_INSTALL_PREFIX@
 exec_prefix=@CMAKE_INSTALL_PREFIX@
-libdir=@CMAKE_INSTALL_PREFIX@/lib
+libdir=@CMAKE_INSTALL_LIBDIR@
 includedir=@CMAKE_INSTALL_PREFIX@/include
 
 Name: LibVNCServer