Experimental Physics and
Industrial Control System

Hi all，

     When I make the seq in my ioc, I met some questions. I use synapps5_8, seq-2-2-1, fedora27(64), base 3.14.15.

     I setup sncNewRT.stt file and did the following step as the manual of seq said:

"Assume you have a SNL program file named *test.st* then the steps to
build are, in principle::
   snc test.st
   cc -c test.c -o test.o ...additional compiler options...
   cc test.o -o test ...additional linker options...
or, if SNL sources are to be pre-processed::
   cc -E -x c test.st > test.i
   snc test.i
   cc -c test.c -o test.o ...additional compiler options...
   cc test.o -o test ...additional linker options..."

I did it as "not pre-processed" way, typed "snc sncNewRT.stt ", "cc -c sncNewRT.c -o sncNewRT.o ", then "cc sncNewRT.o -o sncNewRT".

When I typed the last command( cc sncNewRT.o -o sncNewRT ), I got the following error:

**************************************************

[lyx@localhost src]$ cc sncNewRT.o -o sncNewRT
/usr/lib/gcc/x86_64-redhat-linux/7/../../../../lib64/crt1.o: In function `_start':
(.text+0x20): undefined reference to `main'
sncNewRT.o: In function `seqg_event_tem_change_0_init':
sncNewRT.c:(.text+0x37): undefined reference to `seq_delay'
sncNewRT.o: In function `seqg_action_tem_change_0_cool':
sncNewRT.c:(.text+0x141): undefined reference to `seq_pvPutTmo'
sncNewRT.o: In function `seqg_action_tem_change_0_heat':
sncNewRT.c:(.text+0x1e1): undefined reference to `seq_pvPutTmo'
sncNewRT.o: In function `sncNewRTRegistrar':
sncNewRT.c:(.text+0x1ed): undefined reference to `seqRegisterSequencerCommands'
sncNewRT.c:(.text+0x1f7): undefined reference to `seqRegisterSequencerProgram'
collect2: error: ld returned 1 exit status

My sncNewRT.dbd:

**************************

registrar(sncNewRTRegistrar)

My sncNewRT.stt:

***************************

program sncNewRT
float tem_indoor;
int run_cool_heat;
int run_auto;
int tem_up;
int tem_low;

assign tem_indoor to "{user}:Tem_indoor";
assign run_cool_heat to "{user}:Air_Run";
assign tem_up to "{user}:Tem_Up";
assign tem_low to "{user}:Tem_Low";
assign run_auto to "{user}:Run_Auto";

monitor run_auto;
monitor tem_indoor;
monitor tem_up;
monitor tem_low;

ss tem_change {
    state init {
        when (delay(3)) {
            printf("sncNewRT start\n");
            if (run_auto == 0)
                printf("run_auto = 0\n");
            else
                printf("run_auto != 0\n");
        } state cool
    }
    state cool {
        when (tem_indoor > tem_up) {
            printf("begin to cool\n");
                run_cool_heat = 1;
                pvPut(run_cool_heat);
        } state heat
    }
    state heat {
        when (tem_indoor < tem_low) {
            printf("begin to heat\n");
                run_cool_heat = 2;
                pvPut(run_cool_heat);
        } state cool
    }
}

My makefile in App/src:

***************************

TOP=../..

include $(TOP)/configure/CONFIG
#----------------------------------------
#  ADD MACRO DEFINITIONS AFTER THIS LINE
#=============================

LIBRARY_IOC += Longin
DBD += Longin.dbd
Longin_SRCS += devLongin.c
Longin_LIBS += $(EPICS_BASE_IOC_LIBS)

#=============================
# Build the IOC application

PROD_IOC = NewRT
# NewRT.dbd will be created and installed
DBD += NewRT.dbd

# NewRT.dbd will be made up from these files:
NewRT_DBD += base.dbd

# Include dbd files from all support applications:
NewRT_DBD += Longin.dbd

# Add all the support libraries needed by this IOC
#NewRT_LIBS += xxx

# NewRT_registerRecordDeviceDriver.cpp derives from NewRT.dbd
NewRT_SRCS += NewRT_registerRecordDeviceDriver.cpp

# Build the main IOC entry point on workstation OSs.
NewRT_SRCS_DEFAULT += NewRTMain.cpp
NewRT_SRCS_vxWorks += -nil-

NewRT_LIBS += Longin   # add the line

# To build SNL programs, SNCSEQ must be defined
# in the <top>/configure/RELEASE file
ifneq ($(SNCSEQ),)
    # Build sncExample into exampleSupport
    sncNewRT_SNCFLAGS += +r
    NewRT_DBD += sncNewRT.dbd
    # A .stt sequence program is *not* pre-processed:
    NewRTSupport_SRCS += sncNewRT.stt
    NewRTSupport_LIBS += seq pv
    NewRT_LIBS += seq pv

    # Build sncProgram as a standalone program
    PROD_HOST += sncProgram
    sncProgram_SNCFLAGS += +m
    # A .st sequence program *is* pre-processed:
    sncProgram_SRCS += sncProgram.st
    sncProgram_LIBS += seq pv
    sncProgram_LIBS += $(EPICS_BASE_HOST_LIBS)
endif

# Finally link to the EPICS Base libraries
NewRT_LIBS += $(EPICS_BASE_IOC_LIBS)
#===========================

include $(TOP)/configure/RULES
#----------------------------------------
#  ADD RULES AFTER THIS LINE

Could you give me some suggestion.

Regards,

Liang yx