Undefined references when running a model reference in accelerator mode

I built a very simple model and created a model reference for it. When I try to simulate the model reference in accelerator mode, it will not link. I get the following errors:

        gcc -c -ansi -pedantic -Wno-long-long -fwrapv -fPIC    -O0 -fPIC -DNDEBUG -DMODEL=mini_model -DNUMST=1 -DNCSTATES=0 -DUNIX -DMAT_FILE=0 -DINTEGER_CODE=0 -DONESTEPFCN=1 -DTERMFCN=1 -DHAVESTDIO -DMULTI_INSTANCE_CODE=0 -DCLASSIC_INTERFACE=0 -DALLOCATIONFCN=0 -DMDL_REF_SIM_TGT=1 -I. -I../../.. -I/usr/local/MATLAB/R2014b/extern/include -I/usr/local/MATLAB/R2014b/simulink/include -I/usr/local/MATLAB/R2014b/rtw/c/src -I/usr/local/MATLAB/R2014b/rtw/c/src/ext_mode/common -I/home/andrew/slprj/sim/mini_model -I/home/andrew     -I../../../slprj/sim/_sharedutils   "mini_model.c"
        gcc -c -ansi -pedantic -Wno-long-long -fwrapv -fPIC    -O0 -fPIC -DNDEBUG -DMODEL=mini_model -DNUMST=1 -DNCSTATES=0 -DUNIX -DMAT_FILE=0 -DINTEGER_CODE=0 -DONESTEPFCN=1 -DTERMFCN=1 -DHAVESTDIO -DMULTI_INSTANCE_CODE=0 -DCLASSIC_INTERFACE=0 -DALLOCATIONFCN=0 -DMDL_REF_SIM_TGT=1 -I. -I../../.. -I/usr/local/MATLAB/R2014b/extern/include -I/usr/local/MATLAB/R2014b/simulink/include -I/usr/local/MATLAB/R2014b/rtw/c/src -I/usr/local/MATLAB/R2014b/rtw/c/src/ext_mode/common -I/home/andrew/slprj/sim/mini_model -I/home/andrew     -I../../../slprj/sim/_sharedutils   "mini_model_capi.c"
        ar ruvs mini_modellib.a mini_model.o mini_model_capi.o 
        ar: creating mini_modellib.a
        a - mini_model.o
        a - mini_model_capi.o
        ### Created mini_modellib.a
        /usr/local/MATLAB/R2014b/bin/mex -MATLAB_ARCH=glnxa64 COPTIMFLAGS="-ansi -pedantic -Wno-long-long -fwrapv -fPIC -O0 -fPIC -DNDEBUG" -DMODEL=mini_model -DNUMST=1 -DNCSTATES=0 -DUNIX -DMAT_FILE=0 -DINTEGER_CODE=0 -DONESTEPFCN=1 -DTERMFCN=1 -DHAVESTDIO -DMULTI_INSTANCE_CODE=0 -DCLASSIC_INTERFACE=0 -DALLOCATIONFCN=0 -I. -I../../.. -I/usr/local/MATLAB/R2014b/extern/include -I/usr/local/MATLAB/R2014b/simulink/include -I/usr/local/MATLAB/R2014b/rtw/c/src -I/usr/local/MATLAB/R2014b/rtw/c/src/ext_mode/common -I/home/andrew/slprj/sim/mini_model -I/home/andrew     -I../../../slprj/sim/_sharedutils  -DMDL_REF_SIM_TGT=1 mini_model_msf.c LINKLIBS='mini_modellib.a -Wl,--start-group  -Wl,--end-group ../../../slprj/sim/_sharedutils/rtwshared.a $LINKLIBS' -outdir ../../.. -silent -L/usr/local/MATLAB/R2014b/bin/glnxa64 -lfixedpoint    -L/usr/local/MATLAB/R2014b/bin/glnxa64 -lmwipp -L/usr/local/MATLAB/R2014b/bin/glnxa64 -lmwmathutil -lmwsimulink -lmwsl_fileio -lmwsigstream -lmwsl_log_load_blocks -lmwsl_AsyncioQueue
        Warning: Legacy MEX infrastructure is provided for compatibility; it will be removed in a future version of MATLAB. For more information, consult the MEX release notes http://www.mathworks.com/help/matlab/release-notes.html.
        ../../../mini_model_msf.o: In function `mdlInitializeSizes':
        mini_model_msf.c:(.text+0x77): undefined reference to `rt_InitInfAndNaN'
        mini_model_msf.c:(.text+0xb5): undefined reference to `rtInf'
        mini_model_msf.c:(.text+0x77a): undefined reference to `rtMinusInf'
        mini_model_msf.c:(.text+0x788): undefined reference to `rtInf'
        mini_model_msf.c:(.text+0x828): undefined reference to `rtMinusInf'
        mini_model_msf.c:(.text+0x836): undefined reference to `rtInf'
        mini_model_msf.c:(.text+0xd84): undefined reference to `mr_mini_model_MdlInfoRegFcn'
        ../../../mini_model_msf.o: In function `mdlStart':
        mini_model_msf.c:(.text+0x11e5): undefined reference to `hccjfz11o0'
        ../../../mini_model_msf.o: In function `mdlOutputs':
        mini_model_msf.c:(.text+0x12c4): undefined reference to `mini_model'
        collect2: error: ld returned 1 exit status

            mex: link of ' "../../../mini_model_msf.mexa64"' failed.

        gmake: *** [../../../mini_model_msf.mexa64] Error 255
        ### Build procedure for model: 'mini_model' aborted due to an error.

I'm using 2014b on Ubuntu.