revert CMakeList.txt at groonga-normalizer-mysql/normalizers

storage/mroonga/vendor/groonga/vendor/plugins/groonga-normalizer-mysql/CMakeLists.txt

@@ -54,13 +54,6 @@ else()
   _pkgconfig_invoke(groonga GROONGA PLUGINS_DIR "" --variable=pluginsdir)
 endif()
 
-if(NOT DEFINED CMAKE_C_COMPILE_OPTIONS_PIC)
-  # For old CMake
-  if(CMAKE_COMPILER_IS_GNUCXX OR CMAKE_COMPILER_IS_CLANGCXX)
-    check_build_flag("-fPIC")
-  endif()
-endif()
-
 include_directories(
   ${CMAKE_BINARY_DIR}
   ${GROONGA_INCLUDE_DIRS})

storage/mroonga/vendor/groonga/vendor/plugins/groonga-normalizer-mysql/normalizers/CMakeLists.txt

@@ -17,22 +17,10 @@
 
 set(NORMALIZERS_DIR "${GROONGA_PLUGINS_DIR}/normalizers")
 read_file_list(${CMAKE_CURRENT_SOURCE_DIR}/mysql_sources.am MYSQL_SOURCES)
-
-if(NOT DEFINED CMAKE_C_COMPILE_OPTIONS_PIC)
-  # For old CMake
-  if(CMAKE_COMPILER_IS_GNUCXX OR CMAKE_COMPILER_IS_CLANGCXX)
-    check_build_flag("-fPIC")
-  endif()
-endif()
-
 if(GROONGA_NORMALIZER_MYSQL_EMBED)
-  add_library(mysql_normalizer STATIC ${MYSQL_SOURCES})
+  add_convenience_library(mysql_normalizer ${MYSQL_SOURCES})
   set_property(TARGET mysql_normalizer APPEND PROPERTY
     COMPILE_DEFINITIONS "GROONGA_NORMALIZER_MYSQL_EMBED")
-  set_target_properties(
-    mysql_normalizer
-    PROPERTIES
-    POSITION_INDEPENDENT_CODE ON)
 else()
   add_library(mysql_normalizer MODULE ${MYSQL_SOURCES})
   set_target_properties(mysql_normalizer PROPERTIES