I/O return sts if system not build with release

otherio/lib/rt/src/os_linux/rt_io_m_usb_agent.c

@@ -70,8 +70,8 @@ static pwr_tStatus IoAgentClose( io_tCtx ctx,
 }
 
 #else
-static pwr_tStatus IoAgentInit( io_tCtx ctx, io_sAgent *ap) { return 0;}
-static pwr_tStatus IoAgentClose( io_tCtx ctx, io_sAgent *ap) { return 0;}
+static pwr_tStatus IoAgentInit( io_tCtx ctx, io_sAgent *ap) { return IO__RELEASEBUILD;}
+static pwr_tStatus IoAgentClose( io_tCtx ctx, io_sAgent *ap) { return IO__RELEASEBUILD;}
 #endif
 
 /*  Every method should be registred here. */

otherio/lib/rt/src/os_linux/rt_io_m_velleman_k8055_board.c

@@ -298,10 +298,10 @@ static pwr_tStatus IoCardWrite( io_tCtx ctx,
 }
 
 #else
-static pwr_tStatus IoCardInit( io_tCtx ctx,io_sAgent *ap,io_sRack *rp,io_sCard *cp) {return 0;}
-static pwr_tStatus IoCardClose( io_tCtx ctx,io_sAgent *ap,io_sRack *rp,io_sCard *cp) {return 0;}
-static pwr_tStatus IoCardRead( io_tCtx ctx,io_sAgent *ap,io_sRack *rp,io_sCard *cp) {return 0;}
-static pwr_tStatus IoCardWrite( io_tCtx ctx,io_sAgent *ap,io_sRack *rp,io_sCard *cp) {return 0;}
+static pwr_tStatus IoCardInit( io_tCtx ctx,io_sAgent *ap,io_sRack *rp,io_sCard *cp) {return IO__RELEASEBUILD;}
+static pwr_tStatus IoCardClose( io_tCtx ctx,io_sAgent *ap,io_sRack *rp,io_sCard *cp) {return IO__RELEASEBUILD;}
+static pwr_tStatus IoCardRead( io_tCtx ctx,io_sAgent *ap,io_sRack *rp,io_sCard *cp) {return IO__RELEASEBUILD;}
+static pwr_tStatus IoCardWrite( io_tCtx ctx,io_sAgent *ap,io_sRack *rp,io_sCard *cp) {return IO__RELEASEBUILD;}
 #endif
 
 /*  Every method should be registred here. */

src/msg/rt/src/rt_io_msg.msg

@@ -101,6 +101,8 @@ replaced	<Symbol is replaced>					/info
 normal		<Normal operating state>				/succ
 initfail        <Initialization failed>                                 /error
 nodevice	<Device not found>					/error
+releasebuild    <I/O system is not built with this release>             /error
+dummybuild      <Archive for I/O system is not linked with this executable> /error
 .end