MDEV-17868 mysqltest fails to link with system PCRE libraries

pcre needs symbols from pcreposix
(but this is only an issue when linking with system static libraries)

client/CMakeLists.txt

@@ -41,7 +41,7 @@ ENDIF(UNIX)
 
 MYSQL_ADD_EXECUTABLE(mysqltest mysqltest.cc COMPONENT Test)
 SET_SOURCE_FILES_PROPERTIES(mysqltest.cc PROPERTIES COMPILE_FLAGS "-DTHREADS")
-TARGET_LINK_LIBRARIES(mysqltest mysqlclient pcre pcreposix)
+TARGET_LINK_LIBRARIES(mysqltest mysqlclient pcreposix pcre)
 SET_TARGET_PROPERTIES(mysqltest PROPERTIES ENABLE_EXPORTS TRUE)
 
 

libmysqld/examples/CMakeLists.txt

@@ -34,7 +34,7 @@ ENDIF(UNIX)
 
 MYSQL_ADD_EXECUTABLE(mysqltest_embedded ../../client/mysqltest.cc
   COMPONENT Test)
-TARGET_LINK_LIBRARIES(mysqltest_embedded mysqlserver pcre pcreposix)
+TARGET_LINK_LIBRARIES(mysqltest_embedded mysqlserver pcreposix pcre)
 
 IF(CMAKE_GENERATOR MATCHES "Xcode")
 # It does not seem possible to tell Xcode the resulting target might need