"emcc" command does not recognized

[Harsha Jayaweera]

I'm having issue with building this demo.

https://github.com/kakukogou/opencvjs_demo_segmentation

when i cd into this folder and run make command i get this error message:

/bin/sh: 1: emcc: not found

make: *** [segmentation] Error 127

this is how make file looks like.

segmentation: ../src/segmentation.cpp ../src/export.cpp

mkdir -p $(OBJDIR)

emcc \

../src/segmentation.cpp \

../src/export.cpp \

-I $(OPENCV_INSTALL_DIR)/include \

$(OPENCV_INSTALL_DIR)/lib/libopencv_core.so \

$(OPENCV_INSTALL_DIR)/lib/libopencv_imgproc.so \

-s EXPORTED_FUNCTIONS="['_on_mouse', '_on_init', '_on_process']" \

-O3 \

--llvm-lto 1 \

--closure 1 \

-s PRECISE_F32=1 \

-s FORCE_ALIGNED_MEMORY=1 \

-s TOTAL_MEMORY=306777216 \

-o ./bin/segmentation.js

clean:

rm ./bin/*.js ./bin/*.mem

.......

i guess it does not recognize "emcc" command. is there any specific environment variable i have to set to get this command working.

[Alon Zakai]

You may need to add emcc to your path, if you see an error like that.

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[Harsha Jayaweera]

Can you please tell me to where.... I have already set my environment variable set in .emscripten. as EMSCRIPTEN_ROOT.

"..../emsdk_portable/emscripten/master" is the path where i have pointed as "EMSCRIPTEN_ROOT" but still it does not recognize the command "emcc".

Is there any where else i have to set the path variable.

Any help would be greatly appreciated.

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[Harsha Jayaweera]

Can you please tell me to where.... I have already set my environment variable set in .emscripten. as EMSCRIPTEN_ROOT.

"..../emsdk_portable/emscripten/master" is the path where i have pointed as "EMSCRIPTEN_ROOT" but still it does not recognize the command "emcc".

Is there any where else i have to set the path variable.

Any help would be greatly appreciated.

[Harsha Jayaweera]

[Alon Zakai]

Setting the path is something that depends on your system. A search for setting the path + your OS should find a result.

You will need to add the directory containing "emcc" to the path. Where that is depends on how you installed emscripten, and which OS you are on.

- Alon

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[Harsha Jayaweera]

Thanks. I added it to environment in ubuntu and now it works fine. but then it gave following error:

"ERROR root: Compiler settings are incompatible with fastcomp. You can fall back to the older compiler core, although that is not recommended"

 

Solution i found for this is to set EMCC_FAST_COMPILER=0. it solved the above issue and now i'm getting this error:

"Non-fastcomp compiler is no longer available, please use fastcomp or an older version of emscripten"

How can i fix this. am i missing something here. I did exactly what emscripten's documentation has mentioned in their installation guide and their test sample programs in master\tests folder are also compiling and working fine. is there any issue with my make file. or anything i should be aware of.

Sorry for my confusion. I'm bit new to this.

Can you please tell me how can i solve this. and what am i thinking in wrong way. 

On Thursday, June 11, 2015 at 10:43:52 AM UTC+5:30, Harsha Jayaweera wrote:

[Harsha Jayaweera]

I found the solution to my issue. In new version fastcomp compiler is enabled by default and Non-fastcomp compiler is no longer support. and issue with fast-comp compiler was my make file contains FORCE_ALIGNED_MEMORY flag which is not supported by new version. so i simply removed it and now my program compiled fine. but i didn't install it but i guess it will work too. Thanks everyone for helping.