Why Rapid Accelerator Simulation fails with Visual Studio Compiler error: "rt_nonfinite.c(4): error C2099: initializer is not a constant rt_nonfinite.c(5): error C2099: initializer is not a constant" ?

I got the following error message when run Rapid Accelerator simulation using Windows SDK Version 10.0.26100.0.

** Error message **

cl -c -nologo -GS -W4 -DWIN32 @test_comp.rsp -D_MT -D_DLL -MD -D_CRT_SECURE_NO_WARNINGS -DTGTCONN -DIS_SIM_TARGET -DNRT -DRSIM_PARAMETER_LOADING -DRSIM_WITH_SL_SOLVER -DUSE_LOCALHOST -DENABLE_SLEXEC_SSBRIDGE=1 -DMODEL_HAS_DYNAMICALLY_LOADED_SFCNS=0 -DON_TARGET_WAIT_FOR_START=0 -DTID01EQ=1 /DNDEBUG /Od /Oy- -DMODEL=test -DNUMST=2 -DNCSTATES=0 -DMAT_FILE=1 -DINTEGER_CODE=0 -DONESTEPFCN=0 -DTERMFCN=1 -DHAVESTDIO -DMULTI_INSTANCE_CODE=0 -DCLASSIC_INTERFACE=1 -DALLOCATIONFCN=0 -DEXT_MODE -DIS_RAPID_ACCEL -DHAVESTDIO -DMT=0 -DMODEL_HAS_DYNAMICALLY_LOADED_SFCNS=0 rt_nonfinite.c

rt_nonfinite.c

rt_nonfinite.c(4): error C2099: initializer is not a constant

rt_nonfinite.c(5): error C2099: initializer is not a constant

NMAKE : fatal error U1077: 'cl -c -nologo -GS -W4 -DWIN32 @test_comp.rsp -D_MT -D_DLL -MD -D_CRT_SECURE_NO_WARNINGS -DTGTCONN -DIS_SIM_TARGET -DNRT -DRSIM_PARAMETER_LOADING -DRSIM_WITH_SL_SOLVER -DUSE_LOCALHOST -DENABLE_SLEXEC_SSBRIDGE=1 -DMODEL_HAS_DYNAMICALLY_LOADED_SFCNS=0 -DON_TARGET_WAIT_FOR_START=0 -DTID01EQ=1 /DNDEBUG /Od /Oy- -DMODEL=test -DNUMST=2 -DNCSTATES=0 -DMAT_FILE=1 -DINTEGER_CODE=0 -DONESTEPFCN=0 -DTERMFCN=1 -DHAVESTDIO -DMULTI_INSTANCE_CODE=0 -DCLASSIC_INTERFACE=1 -DALLOCATIONFCN=0 -DEXT_MODE -DIS_RAPID_ACCEL -DHAVESTDIO -DMT=0 -DMODEL_HAS_DYNAMICALLY_LOADED_SFCNS=0 rt_nonfinite.c ' : return code '0x2'

Stop.

**

Answer 1

[MathWorks Support Team]

Given this is a bug specific to Windows SDK version 10.0.26100.0 as described in https://developercommunity.visualstudio.com/t/NAN-is-no-longer-compile-time-constant-i/10688907 .

To work around the MSVC bug when generating code for a model, do one of the following: Add the compiler option -D_UCRT_NOISY_NAN to the C Compiler or C++ Compiler option listed for model configuration parameter Toolchain details. To change settings of model configuration parameter Toolchain details, you might need to set model configuration parameter Build configuration to Specify. Set model configuration parameter Language standard to C89/C90 (ANSI) or C++03 (ISO) OR Select a different compiler, such as MinGW, or roll back the MSVC SDK to an earlier version