Compiling OpenFAST S Function on mac

Wind & Water Computer-Aided Engineering Software Tools
1

Hi

I successfully compiled open fast using cmake. The cmake flags were:

cmake .. -BUILD_OPENFAST_SIMULINK_API=ON -BUILD_TESTING=ON -BUILD_SHARED_LIBS=ON

Then I modified the MATLAB script create_FAST_SFunc.m with the appropriate paths.

When I execute the script, I got the following error:

[code]----------------------------
Creating ./FAST_SFunc.mexmaci64

Building with ‘Xcode with Clang’.
Error using mex
ld: warning: could not create compact unwind for _FAST_OpFM_Restart: stack subq
instruction is too different from dwarf stack size
ld: warning: could not create compact unwind for _FAST_OpFM_Init: stack subq instruction
is too different from dwarf stack size
ld: warning: could not create compact unwind for _FAST_Restart: stack subq instruction
is too different from dwarf stack size
ld: warning: could not create compact unwind for _FAST_CreateCheckpoint: stack subq
instruction is too different from dwarf stack size
ld: warning: could not create compact unwind for _FAST_Sizes: stack subq instruction is
too different from dwarf stack size
Undefined symbols for architecture x86_64:
“___extenddftf2”, referenced from:
_FAST_OpFM_Init in libopenfastlib.a(FAST_Library.f90.o)
_FAST_Sizes in libopenfastlib.a(FAST_Library.f90.o)
“___fast_subs_MOD_exitthisprogram_t”, referenced from:
_FAST_End in libopenfastlib.a(FAST_Library.f90.o)
“___fast_subs_MOD_fast_createcheckpoint_t”, referenced from:
_FAST_CreateCheckpoint in libopenfastlib.a(FAST_Library.f90.o)
“___fast_subs_MOD_fast_initializeall_t”, referenced from:
_FAST_OpFM_Init in libopenfastlib.a(FAST_Library.f90.o)
_FAST_Sizes in libopenfastlib.a(FAST_Library.f90.o)
“___fast_subs_MOD_fast_linearize_t”, referenced from:
_FAST_Update in libopenfastlib.a(FAST_Library.f90.o)
_FAST_Start in libopenfastlib.a(FAST_Library.f90.o)
“___fast_subs_MOD_fast_restorefromcheckpoint_t”, referenced from:
_FAST_OpFM_Restart in libopenfastlib.a(FAST_Library.f90.o)
_FAST_Restart in libopenfastlib.a(FAST_Library.f90.o)
“___fast_subs_MOD_fast_solution0_t”, referenced from:
_FAST_OpFM_Solution0 in libopenfastlib.a(FAST_Library.f90.o)
_FAST_Start in libopenfastlib.a(FAST_Library.f90.o)
“___fast_subs_MOD_fast_solution_t”, referenced from:
_FAST_OpFM_Step in libopenfastlib.a(FAST_Library.f90.o)
_FAST_Update in libopenfastlib.a(FAST_Library.f90.o)
“___fast_subs_MOD_filloutputary_t”, referenced from:
_FAST_Update in libopenfastlib.a(FAST_Library.f90.o)
_FAST_Start in libopenfastlib.a(FAST_Library.f90.o)
“___netf2”, referenced from:
_FAST_OpFM_Restart in libopenfastlib.a(FAST_Library.f90.o)
_FAST_Restart in libopenfastlib.a(FAST_Library.f90.o)
“___nwtc_base_MOD_aborterrlev”, referenced from:
_FAST_OpFM_Restart in libopenfastlib.a(FAST_Library.f90.o)
_FAST_OpFM_Init in libopenfastlib.a(FAST_Library.f90.o)
_FAST_Restart in libopenfastlib.a(FAST_Library.f90.o)
_FAST_Start in libopenfastlib.a(FAST_Library.f90.o)
_FAST_Sizes in libopenfastlib.a(FAST_Library.f90.o)
“___nwtc_io_MOD_int2lstr”, referenced from:
_FAST_CreateCheckpoint in libopenfastlib.a(FAST_Library.f90.o)
“___nwtc_io_MOD_wrscr1”, referenced from:
_FAST_AllocateTurbines in libopenfastlib.a(FAST_Library.f90.o)
“___nwtc_library_MOD_nwtc_init”, referenced from:
_FAST_OpFM_Restart in libopenfastlib.a(FAST_Library.f90.o)
“___nwtc_library_types_MOD_seterrstat”, referenced from:
_FAST_OpFM_Restart in libopenfastlib.a(FAST_Library.f90.o)
_FAST_Restart in libopenfastlib.a(FAST_Library.f90.o)
“___supercontroller_MOD_sc_setinputs”, referenced from:
_FAST_OpFM_Step in libopenfastlib.a(FAST_Library.f90.o)
_FAST_OpFM_Solution0 in libopenfastlib.a(FAST_Library.f90.o)
“___supercontroller_MOD_sc_setoutputs”, referenced from:
_FAST_OpFM_Step in libopenfastlib.a(FAST_Library.f90.o)
_FAST_OpFM_Solution0 in libopenfastlib.a(FAST_Library.f90.o)
“___trunctfdf2”, referenced from:
_FAST_OpFM_Restart in libopenfastlib.a(FAST_Library.f90.o)
_FAST_OpFM_Init in libopenfastlib.a(FAST_Library.f90.o)
_FAST_Restart in libopenfastlib.a(FAST_Library.f90.o)
_FAST_Update in libopenfastlib.a(FAST_Library.f90.o)
_FAST_Start in libopenfastlib.a(FAST_Library.f90.o)
_FAST_Sizes in libopenfastlib.a(FAST_Library.f90.o)
“__gfortran_concat_string”, referenced from:
_FAST_OpFM_Step in libopenfastlib.a(FAST_Library.f90.o)
_FAST_OpFM_Restart in libopenfastlib.a(FAST_Library.f90.o)
_FAST_OpFM_Solution0 in libopenfastlib.a(FAST_Library.f90.o)
_FAST_OpFM_Init in libopenfastlib.a(FAST_Library.f90.o)
_FAST_Restart in libopenfastlib.a(FAST_Library.f90.o)
_FAST_CreateCheckpoint in libopenfastlib.a(FAST_Library.f90.o)
_FAST_Update in libopenfastlib.a(FAST_Library.f90.o)
…
“__gfortran_os_error”, referenced from:
_FAST_AllocateTurbines in libopenfastlib.a(FAST_Library.f90.o)
“__gfortran_runtime_error_at”, referenced from:
_FAST_DeallocateTurbines in libopenfastlib.a(FAST_Library.f90.o)
_FAST_AllocateTurbines in libopenfastlib.a(FAST_Library.f90.o)
“__gfortran_string_index”, referenced from:
_FAST_OpFM_Restart in libopenfastlib.a(FAST_Library.f90.o)
_FAST_OpFM_Init in libopenfastlib.a(FAST_Library.f90.o)
_FAST_Restart in libopenfastlib.a(FAST_Library.f90.o)
_FAST_CreateCheckpoint in libopenfastlib.a(FAST_Library.f90.o)
_FAST_Sizes in libopenfastlib.a(FAST_Library.f90.o)
“__gfortran_string_len_trim”, referenced from:
_FAST_OpFM_Step in libopenfastlib.a(FAST_Library.f90.o)
_FAST_OpFM_Restart in libopenfastlib.a(FAST_Library.f90.o)
_FAST_OpFM_Solution0 in libopenfastlib.a(FAST_Library.f90.o)
_FAST_OpFM_Init in libopenfastlib.a(FAST_Library.f90.o)
_FAST_Restart in libopenfastlib.a(FAST_Library.f90.o)
_FAST_CreateCheckpoint in libopenfastlib.a(FAST_Library.f90.o)
_FAST_Update in libopenfastlib.a(FAST_Library.f90.o)
…
“__gfortran_string_trim”, referenced from:
_FAST_CreateCheckpoint in libopenfastlib.a(FAST_Library.f90.o)
ld: symbol(s) not found for architecture x86_64
clang: error: linker command failed with exit code 1 (use -v to see invocation)

Error in create_FAST_SFunc (line 62)
mex(‘-largeArrayDims’, …[/code]

When I first saw the error I thought it was related to the lack of MEX configuration to compile fortran. But I managed to configure gfortran with mex and the error continues the same. For reference, the current output for the “mex -setup -v fortran” matlab command is:

Verbose mode is on. ... Looking for compiler 'Intel Fortran Composer XE' ... ... Looking for environment variable 'IFORT_COMPILER20' ...No. ... Looking for environment variable 'IFORT_COMPILER19' ...No. ... Looking for environment variable 'IFORT_COMPILER18' ...No. ... Looking for environment variable 'IFORT_COMPILER17' ...No. ... Looking for environment variable 'IFORT_COMPILER16' ...No. ... Looking for environment variable 'IFORT_COMPILER15' ...No. ... Executing command 'which ifort' ...No. Did not find installed compiler 'Intel Fortran Composer XE'. ... Looking for compiler 'gfortran' ... ... Looking for environment variable 'DEVELOPER_DIR' ...No. ... Executing command 'which gfortran' ...No. ... Looking for file '/usr/local/bin/gfortran' ...Yes. ... Looking for folder '/usr/local/Cellar/gcc/10.1.0/bin' ...Yes. ... Executing command 'which gfortran' ...No. ... Looking for file '/usr/local/bin/gfortran' ...Yes. ... Executing command '/usr/local/bin/gfortran -print-file-name=libgfortran.dylib' ...Yes ('/usr/local/Cellar/gcc/10.1.0/lib/gcc/10/libgfortran.dylib'). ... Looking for folder '/usr/local/Cellar/gcc/10.1.0/lib/gcc/10' ...Yes. ... Executing command 'xcrun -sdk macosx --show-sdk-path' ...Yes ('/Library/Developer/CommandLineTools/SDKs/MacOSX.sdk'). ... Executing command 'xcrun -sdk macosx --show-sdk-version' ...Yes ('10.15.4'). Found installed compiler 'gfortran'. ... Looking for compiler 'gfortran' ... ... Looking for environment variable 'DEVELOPER_DIR' ...No. ... Executing command 'which gfortran' ...No. ... Looking for file '/usr/local/bin/gfortran' ...Yes. ... Looking for folder '/usr/local/Cellar/gcc/10.1.0/bin' ...Yes. ... Executing command 'which gfortran' ...No. ... Looking for file '/usr/local/bin/gfortran' ...Yes. ... Executing command '/usr/local/bin/gfortran -print-file-name=libgfortran.dylib' ...Yes ('/usr/local/Cellar/gcc/10.1.0/lib/gcc/10/libgfortran.dylib'). ... Looking for folder '/usr/local/Cellar/gcc/10.1.0/lib/gcc/10' ...Yes. ... Executing command 'xcrun -sdk macosx --show-sdk-path' ...Yes ('/Library/Developer/CommandLineTools/SDKs/MacOSX.sdk'). ... Executing command 'xcrun -sdk macosx --show-sdk-version' ...Yes ('10.15.4'). Found installed compiler 'gfortran'. MEX configured to use 'gfortran' for FORTRAN language compilation.

Could someone provide me some directions?

My environment is MATLAB R2019b with Catalina (10.15.5).

2

Dear Pedro,

I have no experience compiling the OpenFAST S-Function on mac with CMake, so, I don’t know the answer to your question. I would suggest that you repost your question on the OpenFAST github site (github.com/OpenFAST/openfast/issues), where OpenFAST compiling-related questions are better supported. The forum better supports usage-related questions.

Best regards,

3

Dear Jason

Thanks for your prompt response.

I gave up compiling the S Function on Mac and set up a virtual machine with windows. If I eventually come up with a solution in the future I’ll post here.