cmake: use cmake libdir

Signed-off-by: Kevron Rees <kevron.m.rees@intel.com>
Signed-off-by: Mihai Tudor Panu <mihai.tudor.panu@intel.com>

CMakeLists.txt

@@ -15,7 +15,7 @@ message (INFO " found mraa version: ${MRAA_VERSION}")
 
 # Appends the cmake/modules path to MAKE_MODULE_PATH variable.
 set (CMAKE_MODULE_PATH ${CMAKE_CURRENT_SOURCE_DIR}/cmake/modules ${CMAKE_MODULE_PATH})
-set (LIB_INSTALL_DIR "lib${LIB_SUFFIX}" CACHE PATH "Installation path for libraries")
+set (LIB_INSTALL_DIR "${CMAKE_INSTALL_LIBDIR}" CACHE PATH "Installation path for libraries")
 
 # Set CMAKE_LIB_INSTALL_DIR if not defined
 include(GNUInstallDirs)

src/CMakeLists.txt

@@ -184,7 +184,7 @@ macro(upm_module_init)
     SOVERSION ${upm_VERSION_MAJOR}
     VERSION ${upm_VERSION_STRING}
   )
-  upm_create_install_pkgconfig (upm-${libname}.pc lib${LIB_SUFFIX}/pkgconfig)
+  upm_create_install_pkgconfig (upm-${libname}.pc ${CMAKE_INSTALL_LIBDIR}/pkgconfig)
   if (SWIG_FOUND)
     upm_swig_python()
     upm_swig_node()