Able to install to lib64 if LIB_SUFFIX var is set to 64

CMakeLists.txt

@@ -8,6 +8,7 @@ set(GLFW_VERSION_PATCH "0")
 set(GLFW_VERSION_EXTRA "")
 set(GLFW_VERSION "${GLFW_VERSION_MAJOR}.${GLFW_VERSION_MINOR}")
 set(GLFW_VERSION_FULL "${GLFW_VERSION}.${GLFW_VERSION_PATCH}${GLFW_VERSION_EXTRA}")
+set(LIB_SUFFIX "" CACHE STRING "Takes an empty string or 64. Directory where lib will be installed: lib or lib64")
 
 option(GLFW_BUILD_EXAMPLES "Build the GLFW example programs" ON)
 option(GLFW_BUILD_TESTS "Build the GLFW test programs" ON)
@@ -265,7 +266,7 @@ if (_GLFW_X11_GLX OR _GLFW_COCOA_NSGL)
                    ${GLFW_BINARY_DIR}/src/libglfw3.pc @ONLY)
 
     install(FILES ${GLFW_BINARY_DIR}/src/libglfw3.pc
-            DESTINATION lib/pkgconfig)
+            DESTINATION lib${LIB_SUFFIX}/pkgconfig)
 endif()
 
 #--------------------------------------------------------------------

src/CMakeLists.txt

@@ -1,4 +1,3 @@
-
 include_directories(${GLFW_SOURCE_DIR}/src
                     ${GLFW_BINARY_DIR}/src
                     ${glfw_INCLUDE_DIRS})
@@ -59,5 +58,5 @@ if (BUILD_SHARED_LIBS)
     target_link_libraries(glfw LINK_INTERFACE_LIBRARIES)
 endif()
 
-install(TARGETS glfw DESTINATION lib)
+install(TARGETS glfw DESTINATION lib${LIB_SUFFIX} )