gmake: *** No rule to make target `spacemouse.obj', needed by...

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John Wick
John Wick 2015-4-15
回答： Pratik 2024-7-17
Hello,
I am trying to build realtime model which includes Space Mouse Input block (which references to s-function 'spacemouse'). Whenever I try to build the model, I get the following error:
L:/matlab/toolbox/rtw/targets/rtwin/openwat/binnt/wcc386 -wcd=201 -wcd=202 -wcd=302 -wcd=400 -q -ei -zp8 -6r -fpi87 -fp6 -zri -zl -wx -oneatxh -DEXT_MODE -DUSE_RTMODEL -DMODEL=untitled -DRT -DNUMST=2 -DTID01EQ=1 -DNCSTATES=0 -DMT=0 -D__OBSCURE_STREAM_INTERNALS -fo="rt_sim.obj" "L:/matlab/rtw/c/src/rt_sim.c"
gmake: *** No rule to make target `spacemouse.obj', needed by `../untitled.rwd'. Stop.
### Build procedure for model: 'untitled' aborted due to an error.
The filename of the model is untitled.
In untitled.mk makefile there is one line including reference to s-function spacemouse.c file which does not exist (only spacemouse.mexw32 is available in toolbox\sl3d\sl3d folder).
I am trying to build using system target file: rtwin.tlc and make_rtw command.
To reproduce the problem: 1. Create new simulink file with Space Mouse Input block from Simulink 3D Animation library 2. Change mode to external and system target file to rtwin.tlc, make command to make_rtw 3. Build model
I am using Matlab R2011a.
Your help will be very much appreciated!

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回答（1 个）

Pratik
Pratik 2024-7-17
Hi John,
The error "No rule to make target" is typically thrown by the make/gmake build automation tool because it can't find the instructions on how to create a particular file or target. This can happen for several reasons:
  1. Incorrect Path: Your project path, source file path and/or include folder path contains white spaces that the "make" tool cannot handle.
  2. Missing File: It could also mean that the indicated file is missing.
  3. Windows Character Length Limit: A long directory path name could also violate the Windows 256-character length limit and result in this error.
  4. Simulink Real-Time Character Length Limit: The error could be due to the third-party QNX compiler used by Speedgoat hitting the character length limit
Please refer to the following MATLAB Answer post for more detail:
www.mathworks.com/matlabcentral/answers/814790-why-do-i-get-the-build-error-no-rule-to-make-target
I hope this helps!

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