avoid compiling objects twice: shared and static library now can be build in one step

Author: 9EOR9

libmariadb/CMakeLists.txt

@@ -144,13 +144,14 @@ ELSE()
   INCLUDE_DIRECTORIES(${CMAKE_SOURCE_DIR}/zlib)
 ENDIF()
 
-ADD_LIBRARY(mariadbclient STATIC ${LIBMARIADB_SOURCES})
+ADD_LIBRARY(mariadblib_core OBJECT ${LIBMARIADB_SOURCES})
+ADD_LIBRARY(mariadbclient STATIC $<TARGET_OBJECTS:mariadblib_core>)
 TARGET_LINK_LIBRARIES(mariadbclient ${CMAKE_THREAD_LIBS_INIT} ${CMAKE_DL_LIBS} ${MATH_LIBRARY} ${ICONV_LIBRARIES})
 IF(OPENSSL_FOUND)
   TARGET_LINK_LIBRARIES(mariadbclient ${SSL_LIBRARIES})
 ENDIF()
 
-ADD_LIBRARY(libmariadb SHARED ${LIBMARIADB_SOURCES})
+ADD_LIBRARY(libmariadb SHARED $<TARGET_OBJECTS:mariadblib_core>)
 TARGET_LINK_LIBRARIES(libmariadb ${CMAKE_THREAD_LIBS_INIT} ${CMAKE_DL_LIBS} ${MATH_LIBRARY} ${ICONV_LIBRARIES})
 
 IF(OPENSSL_FOUND)