build: various improvements

- add option to install only host tools
- add option to specify lib and runtime dir

Type: improvement

Change-Id: I6356b52df459120fc9b0127948bae7679fb10e52
Signed-off-by: Damjan Marion <damarion@cisco.com>

src/cmake/VPPConfig.cmake

@@ -33,7 +33,9 @@ if (compiler_flag_no_address_of_packed_member)
   add_definitions(-Wno-address-of-packed-member)
 endif()
 
-include(CheckCCompilerFlag)
+set(VPP_RUNTIME_DIR "bin" CACHE STRING "Relative runtime directory path")
+set(VPP_LIBRARY_DIR "lib" CACHE STRING "Relative library directory path")
+
 include(${CMAKE_CURRENT_LIST_DIR}/cpu.cmake)
 include(${CMAKE_CURRENT_LIST_DIR}/api.cmake)
 include(${CMAKE_CURRENT_LIST_DIR}/library.cmake)

src/cmake/exec.cmake

@@ -30,7 +30,7 @@ macro(add_vpp_executable exec)
     add_dependencies(${exec} ${ARG_DEPENDS})
   endif()
   if(NOT ARG_NO_INSTALL)
-    install(TARGETS ${exec} DESTINATION bin)
+    install(TARGETS ${exec} DESTINATION ${VPP_RUNTIME_DIR})
   endif()
 endmacro()
 

src/cmake/library.cmake

@@ -34,7 +34,7 @@ macro(add_vpp_library lib)
   endif()
   install(
     TARGETS ${lib}
-    DESTINATION lib
+    DESTINATION ${VPP_LIBRARY_DIR}
     COMPONENT ${ARG_COMPONENT}
   )
 

src/cmake/plugin.cmake

@@ -86,13 +86,13 @@ macro(add_vpp_plugin name)
       LIBRARY_OUTPUT_DIRECTORY ${CMAKE_LIBRARY_OUTPUT_DIRECTORY}/vpp_api_test_plugins)
     install(
       TARGETS ${test_plugin_name}
-      DESTINATION lib/vpp_api_test_plugins
+      DESTINATION ${VPP_LIBRARY_DIR}/vpp_api_test_plugins
       COMPONENT ${PLUGIN_COMPONENT}
     )
   endif()
   install(
     TARGETS ${plugin_name}
-    DESTINATION lib/vpp_plugins
+    DESTINATION ${VPP_LIBRARY_DIR}/vpp_plugins
     COMPONENT ${PLUGIN_COMPONENT}
   )
 endmacro()