Matlab Coder fails to generate executable using coder.ceval

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Maximilian M.
Maximilian M. il 11 Lug 2016
I'm trying to generate a minimal example to generate a C executable with Matlab Coder including native C code using coder.ceval I can create the full c-code from my Matlab code, however generating the executable fails. I am trying to compile the absval example from the Matlab documentation: http://nl.mathworks.com/help/simulink/slref/coder.ceval.html
My program structure looks the following:
absval.m:
function y = absval(u) %#codegen
y = abs(u);
From this I generated c-code using
codegen -config:lib absval -args {0.0}
The c-code is called by callabsval.m
function y = callabsval %#codegen
y = -2.75;
coder.ceval('absval_initialize');
y = coder.ceval('absval',y);
coder.ceval('absval_terminate');
As a last step I want to use Matlab Coder to generate a standalone c executable from callabsval.m, however the build fails with the output:
SummaryAll Messages (2)VariablesTarget Build Log
Build Parameters
Build directory /path/absval/codegen/exe/callabsval
Build Log
1 xcrun clang -c -isysroot /Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.11.sdk -arch x86_64 -fno-common -fexceptions -O0 -g -DMODEL=callabsval -DHAVESTDIO -DUSE_RTMODEL -DUNIX -I/path/absval -I/path/absval/codegen/exe/callabsval -I/Applications/MATLAB_R2016a.app/extern/include -I/Applications/MATLAB_R2016a.app/simulink/include -I/Applications/MATLAB_R2016a.app/rtw/c/src -I/Applications/MATLAB_R2016a.app/rtw/c/src/ext_mode/common -I/Applications/MATLAB_R2016a.app/rtw/c/ert -o "callabsval_initialize.o" "callabsval_initialize.c"
2 xcrun clang -c -isysroot /Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.11.sdk -arch x86_64 -fno-common -fexceptions -O0 -g -DMODEL=callabsval -DHAVESTDIO -DUSE_RTMODEL -DUNIX -I/path/absval -I/path/absval/codegen/exe/callabsval -I/Applications/MATLAB_R2016a.app/extern/include -I/Applications/MATLAB_R2016a.app/simulink/include -I/Applications/MATLAB_R2016a.app/rtw/c/src -I/Applications/MATLAB_R2016a.app/rtw/c/src/ext_mode/common -I/Applications/MATLAB_R2016a.app/rtw/c/ert -o "callabsval_terminate.o" "callabsval_terminate.c"
3 xcrun clang -c -isysroot /Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.11.sdk -arch x86_64 -fno-common -fexceptions -O0 -g -DMODEL=callabsval -DHAVESTDIO -DUSE_RTMODEL -DUNIX -I/path/absval -I/path/absval/codegen/exe/callabsval -I/Applications/MATLAB_R2016a.app/extern/include -I/Applications/MATLAB_R2016a.app/simulink/include -I/Applications/MATLAB_R2016a.app/rtw/c/src -I/Applications/MATLAB_R2016a.app/rtw/c/src/ext_mode/common -I/Applications/MATLAB_R2016a.app/rtw/c/ert -o "callabsval.o" "callabsval.c"
4 callabsval.c:30:3: warning: implicit declaration of function 'absval_initialize' is invalid in C99 [-Wimplicit-function-declaration]
5 absval_initialize();
6 ^
7 callabsval.c:33:7: warning: implicit declaration of function 'absval' is invalid in C99 [-Wimplicit-function-declaration]
8 y = absval(-2.75);
9 ^
10 callabsval.c:37:3: warning: implicit declaration of function 'absval_terminate' is invalid in C99 [-Wimplicit-function-declaration]
11 absval_terminate();
12 ^
13 3 warnings generated.
14 xcrun clang -c -isysroot /Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.11.sdk -arch x86_64 -fno-common -fexceptions -O0 -g -DMODEL=callabsval -DHAVESTDIO -DUSE_RTMODEL -DUNIX -I/path/absval -I/path/absval/codegen/exe/callabsval -I/Applications/MATLAB_R2016a.app/extern/include -I/Applications/MATLAB_R2016a.app/simulink/include -I/Applications/MATLAB_R2016a.app/rtw/c/src -I/Applications/MATLAB_R2016a.app/rtw/c/src/ext_mode/common -I/Applications/MATLAB_R2016a.app/rtw/c/ert -o "rt_nonfinite.o" "rt_nonfinite.c"
15 xcrun clang -c -isysroot /Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.11.sdk -arch x86_64 -fno-common -fexceptions -O0 -g -DMODEL=callabsval -DHAVESTDIO -DUSE_RTMODEL -DUNIX -I/path/absval -I/path/absval/codegen/exe/callabsval -I/Applications/MATLAB_R2016a.app/extern/include -I/Applications/MATLAB_R2016a.app/simulink/include -I/Applications/MATLAB_R2016a.app/rtw/c/src -I/Applications/MATLAB_R2016a.app/rtw/c/src/ext_mode/common -I/Applications/MATLAB_R2016a.app/rtw/c/ert -o "rtGetNaN.o" "rtGetNaN.c"
16 xcrun clang -c -isysroot /Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.11.sdk -arch x86_64 -fno-common -fexceptions -O0 -g -DMODEL=callabsval -DHAVESTDIO -DUSE_RTMODEL -DUNIX -I/path/absval -I/path/absval/codegen/exe/callabsval -I/Applications/MATLAB_R2016a.app/extern/include -I/Applications/MATLAB_R2016a.app/simulink/include -I/Applications/MATLAB_R2016a.app/rtw/c/src -I/Applications/MATLAB_R2016a.app/rtw/c/src/ext_mode/common -I/Applications/MATLAB_R2016a.app/rtw/c/ert -o "rtGetInf.o" "rtGetInf.c"
17 ### Creating standalone executable /path/absval/callabsval ...
18 xcrun clang -arch x86_64 -isysroot /Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.11.sdk -Wl,-rpath,/Applications/MATLAB_R2016a.app/bin/maci64 -Wl,-rpath,@executable_path -Wl,-rpath,@executable_path//path/absval -L"/Applications/MATLAB_R2016a.app/bin/maci64" -g -o /path/absval/callabsval callabsval_initialize.o callabsval_terminate.o callabsval.o rt_nonfinite.o rtGetNaN.o rtGetInf.o -lm
19 Undefined symbols for architecture x86_64:
20 "_absval", referenced from:
21 _callabsval in callabsval.o
22 "_absval_initialize", referenced from:
23 _callabsval in callabsval.o
24 "_absval_terminate", referenced from:
25 _callabsval in callabsval.o
26 "_main", referenced from:
27 implicit entry/start for main executable
28 ld: symbol(s) not found for architecture x86_64
29 clang: error: linker command failed with exit code 1 (use -v to see invocation)
30 gmake: *** [/path/absval/callabsval] Error 1
31
32 Error(s) encountered while building "callabsval":
33 ### Failed to generate all binary outputs.
I'm trying this on MacOS 10.11.5 using Matlab 2016a. Any help is greatly appreciated!

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