Calling XmathCommand() from a ucb block on Windows

[Farshid]

I would like to call matlab external program interface function "XmathCommand()" from a ucb code.

I include   "xmathlib.h" header file in the ucb c code.

Xmath Solaris (71.5):

REFS The only changes that need to is to add "INCLUDES    = -I$(SYSBLD)/../xmath/include" to the makefile and everything works fine. The following is the final linking message reported on the xmath command  window:

Creating ./simucb.so.1.0
/usr/ccs/bin/ld -G -z nodefs -o ./simucb.so.1.0.new ./tt_cmc_rtw/tt.o ./tt_cmc_rtw/tt_data.o    ucbhook.o tt_cmc_rtw/tt_ucb.o   -lm  -lhyper
Done.

Windows (71.6):

The same process does not work on windows platform. I use the same ucb code. I copy the "makelnx.bat" and "makelnx.mk" to the working directory and add the followings:

INCLUDES    = -I$(SYSBLD)/../xmath/include

If I run the simulation,  the following error is produced:

Linking simucb.dll ..
link /OUT:simucb.dll /NOLOGO /DLL /SUBSYSTEM:console /INCREMENTAL:no ucbhook.obj tt_cmc_rtw\tt_ucb.obj C:\PROGRA~1\NATION~1\MATRIXx\mx_71.6\sysbld\lib\simucb.exp
C:\PROGRA~1\NATION~1\MATRIXx\mx_71.6\sysbld\lib\simexe.lib C:\PROGRA~1\NATION~1\MATRIXx\mx_71.6\sysbld\lib\libdllutil.lib C:\PROGRA~1\NATION~1\MATRIXx\mx_71.6\hyper\lib\libhyper.lib
ttlib.lib libcmt.lib
LINK : warning LNK4098: defaultlib "LIBC" conflicts with use of other libs; use /NODEFAULTLIB:library
tt_ucb.obj : error LNK2001: unresolved external symbol _XmathCommand
simucb.dll : fatal error LNK1120: 1 unresolved externals

I modify the LIBS  in  "makelnx.mk" to include Xmath.lib:

LIBS = \
"C:\Program Files\National Instruments\MATRIXx\mx_71.6\xmath\lib\xmath.lib" \
$(SYSBLD)\lib\simucb.exp \
$(SYSBLD)\lib\simexe.lib \
$(SYSBLD)\lib\libdllutil.lib \
$(HYPER)\lib\libhyper.lib \
$(USRLIBS) \
$(FLIB)

If I run the simulation,  the following error is produced:

Linking simucb.dll ..
 link /OUT:simucb.dll /NOLOGO /DLL /SUBSYSTEM:console /INCREMENTAL:no ucbhook.obj tt_cmc_rtw\tt_ucb.obj "C:\Program Files\National Instruments\MATRIXx\mx_71.6\xmath\lib\xmath.lib"
C:\PROGRA~1\NATION~1\MATRIXx\mx_71.6\sysbld\lib\simucb.exp C:\PROGRA~1\NATION~1\MATRIXx\mx_71.6\sysbld\lib\simexe.lib C:\PROGRA~1\NATION~1\MATRIXx\mx_71.6\sysbld\lib\libdllutil.lib
C:\PROGRA~1\NATION~1\MATRIXx\mx_71.6\hyper\lib\libhyper.lib ttlib.lib libcmt.lib
libdllutil.lib(dll_init.obj) : error LNK2005: _AllocateMatrix already defined in xmath.lib(externtypes.obj)
libdllutil.lib(dll_init.obj) : error LNK2005: _WrapMatrix already defined in xmath.lib(externtypes.obj)
libdllutil.lib(dll_init.obj) : error LNK2005: _DeleteMatrix already defined in xmath.lib(externtypes.obj)
libdllutil.lib(dll_init.obj) : error LNK2005: _AllocateString already defined in xmath.lib(externtypes.obj)
libdllutil.lib(dll_init.obj) : error LNK2005: _WrapString already defined in xmath.lib(externtypes.obj)
libdllutil.lib(dll_init.obj) : error LNK2005: _AllocateStringMatrix already defined in xmath.lib(externtypes.obj)
libdllutil.lib(dll_init.obj) : error LNK2005: _WrapStringMatrix already defined in xmath.lib(externtypes.obj)
libdllutil.lib(dll_init.obj) : error LNK2005: _DeleteString already defined in xmath.lib(externtypes.obj)
libdllutil.lib(dll_init.obj) : error LNK2005: _WrapPDM already defined in xmath.lib(externtypes.obj)
libdllutil.lib(dll_init.obj) : error LNK2005: _DeletePDM already defined in xmath.lib(externtypes.obj)
libdllutil.lib(dll_init.obj) : error LNK2005: _AllocateNull already defined in xmath.lib(externtypes.obj)
libdllutil.lib(dll_init.obj) : error LNK2005: _DeleteNull already defined in xmath.lib(externtypes.obj)
libdllutil.lib(dll_init.obj) : error LNK2005: _AllocateList already defined in xmath.lib(externtypes.obj)
libdllutil.lib(dll_init.obj) : error LNK2005: _DeleteList already defined in xmath.lib(externtypes.obj)
libdllutil.lib(dll_init.obj) : error LNK2005: _DeleteAny already defined in xmath.lib(externtypes.obj)
libdllutil.lib(dll_init.obj) : error LNK2005: _XmathMain already defined in xmath.lib(xmath_client.obj)
libdllutil.lib(dll_init.obj) : error LNK2005: _XmathStart already defined in xmath.lib(xmath_client.obj)
libdllutil.lib(dll_init.obj) : error LNK2005: _XmathStop already defined in xmath.lib(xmath_client.obj)
libdllutil.lib(dll_init.obj) : error LNK2005: _XmathPut already defined in xmath.lib(xsp.obj)
libdllutil.lib(dll_init.obj) : error LNK2005: _XmathGet already defined in xmath.lib(xsp.obj)
libdllutil.lib(dll_init.obj) : error LNK2005: _XmathExecute already defined in xmath.lib(xmath_client.obj)
libdllutil.lib(dll_init.obj) : error LNK2005: _XmathPanic already defined in xmath.lib(xsp.obj)
libdllutil.lib(dll_init.obj) : error LNK2005: _XmathReleaseIPC already defined in xmath.lib(xsp.obj)
libdllutil.lib(dll_init.obj) : error LNK2005: _XmathSyncWorkDir already defined in xmath.lib(xmath_client.obj)
LINK : warning LNK4098: defaultlib "LIBC" conflicts with use of other libs; use /NODEFAULTLIB:library
xmath.lib(s_win32_dbg.obj) : error LNK2001: unresolved external symbol __imp__MessageBoxA@16
xmath.lib(s_win32.obj) : error LNK2001: unresolved external symbol __imp__GetUserNameA@8
simucb.dll : fatal error LNK1120: 2 unresolved externals

Any idea why the windows behave differently and how to resolve the issue.

Thanks

Farshid

[NathanT]

Farshid,
      
      On windows, you can't link with xmath.lib directly, so that must be removed from the linked in libraries for the UCB. The libdllutil.lib has everything that's possible to call within a UCB.

It looks like the XmathCommand function is not part of the libdllutil.lib and therefore not accessible. However, the XmathExecute function is available. So, use that one instead.

Cheers,

NathanT