build fix: Installing the static lib will also install headers (#1948)

Installing the static lib will also install headers (Fixes: #1896).

This is useful for debian's iotjs-dev package. The extra archive rule is needed to prevent this error:
   install TARGETS given no ARCHIVE DESTINATION for static library target

Change-Id: Ib9f6cb50631f4cdfeb308108f91ed28e7d204dc4
Forwarded: #1948
Origin: https://github.com/TizenTeam/iotjs/tree/sandbox/rzr/cmake/lib/review/master
Bug: #1945
Bug-Debian: https://bugs.debian.org/957364
Relate-to: #1896
Last-Update: 2020-10-16

IoT.js-DCO-1.0-Signed-off-by: Philippe Coval rzr@users.sf.net

cmake/iotjs.cmake

@@ -580,16 +580,11 @@ if(NOT BUILD_LIB_ONLY)
   )
   target_include_directories(${TARGET_IOTJS} PRIVATE ${IOTJS_INCLUDE_DIRS})
   target_link_libraries(${TARGET_IOTJS} ${TARGET_LIB_IOTJS})
-  install(TARGETS ${TARGET_IOTJS}
+  install(TARGETS ${TARGET_IOTJS} ${TARGET_LIB_IOTJS}
           RUNTIME DESTINATION "${INSTALL_PREFIX}/bin"
+          ARCHIVE DESTINATION "${INSTALL_PREFIX}/lib"
           LIBRARY DESTINATION "${INSTALL_PREFIX}/lib"
           PUBLIC_HEADER DESTINATION "${INSTALL_PREFIX}/include/iotjs")
-  if(CREATE_SHARED_LIB)
-    install(TARGETS ${TARGET_LIB_IOTJS}
-            RUNTIME DESTINATION "${INSTALL_PREFIX}/bin"
-            LIBRARY DESTINATION "${INSTALL_PREFIX}/lib"
-            PUBLIC_HEADER DESTINATION "${INSTALL_PREFIX}/include/iotjs")
-  endif()
 else()
   install(TARGETS ${TARGET_LIB_IOTJS} DESTINATION ${LIB_INSTALL_DIR})
 endif()