CMake: skia_link_arguments.txt repects BUILD_SHARED_LIBS

cmake/CMakeLists.txt

 # Boilerplate.
 cmake_minimum_required (VERSION 3.1)   # First version with CMAKE_CXX_STANDARD.
 project (skimake)
 set (CMAKE_CXX_STANDARD 11)
 
 # Default to Release mode.  We're mainly targeting Skia users, not Skia developers.
 if (NOT CMAKE_BUILD_TYPE)
     set (CMAKE_BUILD_TYPE Release)
 endif ()
 
@@ skipping 284 matching lines @@
 endif()
 if (UNIX AND NOT APPLE)
   set (SK_SAMPLES_FOR_X 1)
 else()
   set (SK_SAMPLES_FOR_X 0)
 endif()
 configure_file ("SkUserConfig.h.in" "${userconfig_directory}/SkUserConfig.h")
 
 # skia_link_arguments.txt
 set (link_arguments ${CMAKE_BINARY_DIR}/skia_link_arguments.txt)
-file (WRITE ${link_arguments} "-L${CMAKE_BINARY_DIR}\n")
-file (APPEND ${link_arguments} "-lskia\n")
-file (APPEND ${link_arguments} "-Wl,-rpath,${CMAKE_BINARY_DIR}\n")
+if (BUILD_SHARED_LIBS)
+  file (WRITE ${link_arguments} "-L${CMAKE_BINARY_DIR}\n")
+  file (APPEND ${link_arguments} "-lskia\n")
+  file (APPEND ${link_arguments} "-Wl,-rpath,${CMAKE_BINARY_DIR}\n")
+else()
+  file (WRITE ${link_arguments} "${CMAKE_BINARY_DIR}/libskia.a\n")
+  foreach (lib ${libs})
+    if (EXISTS ${lib})
+      get_filename_component(lib_path ${lib} ABSOLUTE)
+      file (APPEND ${link_arguments} "${lib_path}\n")
+    else()
+      file (APPEND ${link_arguments} "-l${lib}\n")
+    endif()
+  endforeach()
+endif()
 
 # skia_compile_arguments.txt
 set (compile_arguments ${CMAKE_BINARY_DIR}/skia_compile_arguments.txt)
 file (WRITE ${compile_arguments} "--std=c++11\n")
 foreach (include ${public_includes})
   get_filename_component (abs_include ${include} ABSOLUTE)
   file (APPEND ${compile_arguments} "-I${abs_include}\n")
 endforeach()
 
 # cmake .
@@ skipping 18 matching lines @@
         file (APPEND ${skia_h_path} "#include \"${filename_component}\"\n")
       endif ()
     endforeach()
   endif()
 endforeach()
 file(APPEND ${skia_h_path} "\n#endif  // skia_DEFINED\n")
 
 # Now build a simple example app that uses Skia via libskia.so.
 add_executable(example example.cpp)
 target_link_libraries(example skia ${OPENGL_LIBRARIES})