Emscripten make issue

[liquidzym]

setting up the latest the emsdk and env according to the page https://openframeworks.cc/setup/emscripten/
the xcode version which is 15.2(15c500b)

the nightly build version and 0.12.0 both with this error

clang++: error: unknown argument: '--gc-sections'
em++: error: '/Users/liquid/Desktop/emsdk/upstream/bin/clang++ -target wasm32-unknown-emscripten -fignore-exceptions -fvisibility=default -mllvm -combiner-global-alias-analysis=false -mllvm -enable-emscripten-sjlj -mllvm -disable-lsr --sysroot=/Users/liquid/Desktop/emsdk/upstream/emscripten/cache/sysroot -DEMSCRIPTEN -isystem /Users/liquid/Desktop/emsdk/upstream/emscripten/cache/sysroot/include/freetype2 -Xclang -iwithsysroot/include/fakesdl -Xclang -iwithsysroot/include/compat -O3 -Wl --gc-sections /Users/liquid/Desktop/of_v20240228_osx_release/libs/openFrameworksCompiled/lib/emscripten/libopenFrameworks.bc -c -o /var/folders/63/p36n6bnn21lc5x59z00d7nqw0000gn/T/emscripten_temp_5ucj2s0_/libopenFrameworks_0.o' failed (returned 1)
make[1]: *** [bin/em/graphicsExample/index.html] Error 1
make: *** [Release] Error 2
emmake: error: 'make' failed (returned 2)

[danoli3]

I just tested as well, seems okay, hmmm lets verify your setup:

Env setup:

echo "Emscripten Download SRC"
	cd ../../
	git clone https://github.com/emscripten-core/emsdk.git
	cd emsdk
	git pull

	echo "if any issues with python - make sure to add python paths to bash environment Variables:"
  python -m pip install --upgrade pip setuptools virtualenv
  ./emsdk install latest
  ./emsdk activate latest --permanent
   ./emsdk_env.sh

And are you running a command like this in the project directory:

emmake make

[danoli3]

output should be like this:

     
#de  f157i | n        e# dGeLf_iDnEeP TGHL__CDOEMPTH_CPOOMNPEONNTE2N4T    2        4                                                                            G        L        _GDLE_PDTEPTH_HC_OCMOPMOPNOENNETN2T42_4O_EOSES
      
|       |                 ^
                ^
/Users/~/SOURCE/EMSDK/emsdk/upstream/emscripten/cache/sysroot/include/GL/glext.h:325:9/Users/~/SOURCE/EMSDK/emsdk/upstream/emscripten/cache/sysroot/include/GL/glext.h:: 325:note: 9:previous definition is here 
note:   previous definition is here325 | 
#d  325 | efi#ndefe GiLn_eD EGPLT_HD_ECPOTMHP_OCNOEMNPTO2N4E N T 2 4                    0 x 8 1 A06x8
1A6      |         ^

      |         ^
4 warnings generated.
4 warnings generated.
Linking bin/em/emscripten/index.html for emscripten
/Users/~/SOURCE/EMSDK/emsdk/upstream/emscripten/em++ -o bin/em/emscripten/index.html -O3 -s TOTAL_MEMORY=134217728 --memory-init-file 1 obj/emscripten/Release/src/ofApp.o obj/emscripten/Release/src/main.o  /Users/~/SOURCE/openFrameworksEm/addons/obj/emscripten/Release/ofxEmscripten/src/ofxEmscriptenSoundStream.o /Users/~/SOURCE/openFrameworksEm/addons/obj/emscripten/Release/ofxEmscripten/src/ofxEmscriptenVideoPlayer.o /Users/~/SOURCE/openFrameworksEm/addons/obj/emscripten/Release/ofxEmscripten/src/ofxEmscriptenSoundPlayer.o /Users/~/SOURCE/openFrameworksEm/addons/obj/emscripten/Release/ofxEmscripten/src/ofxEmscriptenVideoGrabber.o /Users/~/SOURCE/openFrameworksEm/addons/obj/emscripten/Release/ofxEmscripten/src/ofxEmscriptenURLFileLoader.o /Users/~/SOURCE/openFrameworksEm/addons/obj/emscripten/Release/ofxEmscripten/src/ofxAppEmscriptenWindow.o  /Users/~/SOURCE/openFrameworksEm/libs/openFrameworksCompiled/lib/emscripten/libopenFrameworks.bc   -Wl --gc-sections --preload-file bin/data@data --emrun --bind --profiling-funcs -s USE_FREETYPE=1 -s ALLOW_MEMORY_GROWTH=1 -s MAX_WEBGL_VERSION=2 -s WEBGL2_BACKWARDS_COMPATIBILITY_EMULATION=1 -s FULL_ES2 -sFULL_ES3=1 -s USE_PTHREADS=0 --js-library /Users/~/SOURCE/openFrameworksEm/addons/ofxEmscripten/libs/html5video/lib/emscripten/library_html5video.js --js-library /Users/~/SOURCE/openFrameworksEm/addons/ofxEmscripten/libs/html5audio/lib/emscripten/library_html5audio.js --shell-file /Users/~/SOURCE/openFrameworksEm/libs/openFrameworksCompiled/project/emscripten/template.html /Users/~/SOURCE/openFrameworksEm/libs/FreeImage/lib/emscripten/libfreeimage.a /Users/~/SOURCE/openFrameworksEm/libs/boost/lib/emscripten/libboost_system.a /Users/~/SOURCE/openFrameworksEm/libs/boost/lib/emscripten/libboost_filesystem.a /Users/~/SOURCE/openFrameworksEm/libs/pugixml/lib/emscripten/libpugixml.bc /Users/~/SOURCE/openFrameworksEm/libs/tess2/lib/emscripten/libtess2.a /Users/~/SOURCE/openFrameworksEm/libs/uriparser/lib/emscripten/liburiparser.a    
em++: warning: --memory-init-file is only supported with -sWASM=0 [-Wunsupported]
wasm-ld: warning: function signature mismatch: StrIODecTerm
>>> defined as (i32) -> void in /Users/~/SOURCE/openFrameworksEm/libs/FreeImage/lib/emscripten/libfreeimage.a(JXRTranscode.o)
>>> defined as (i32) -> i32 in /Users/~/SOURCE/openFrameworksEm/libs/FreeImage/lib/emscripten/libfreeimage.a(strdec.o)

wasm-ld: warning: function signature mismatch: StrIOEncTerm
>>> defined as (i32) -> void in /Users/~/SOURCE/openFrameworksEm/libs/FreeImage/lib/emscripten/libfreeimage.a(JXRTranscode.o)
>>> defined as (i32) -> i32 in /Users/~/SOURCE/openFrameworksEm/libs/FreeImage/lib/emscripten/libfreeimage.a(strenc.o)

wasm-ld: warning: function signature mismatch: encodeMB
>>> defined as (i32, i32, i32) -> void in /Users/~/SOURCE/openFrameworksEm/libs/FreeImage/lib/emscripten/libfreeimage.a(JXRTranscode.o)
>>> defined as (i32, i32, i32) -> i32 in /Users/~/SOURCE/openFrameworksEm/libs/FreeImage/lib/emscripten/libfreeimage.a(strenc.o)

     compiling done
     to launch the application on the default browser, run:

     emrun bin/em/emscripten
     
     some browsers, like safari, don't support webgl
     
emrun has automatically found the following browsers in the default install locations on the system:

  - chrome: Google Chrome 
  - safari: Apple Safari 

You can pass the --browser <id> option to launch with the given browser above.
Even if your browser was not detected, you can use --browser /path/to/browser/executable to launch with that browser.

```

[liquidzym]

emm,wired ,still not working,i'm sure i'm setting up everything this is the lastest step

liquid@liquiddeMacBook-Pro graphicsExample % cd /Users/liquid/Desktop/emsdk
liquid@liquiddeMacBook-Pro emsdk % ./emsdk_env.sh
Setting up EMSDK environment (suppress these messages with EMSDK_QUIET=1)
Setting environment variables:
liquid@liquiddeMacBook-Pro emsdk % cd /Users/liquid/Desktop/of_v20240228_osx_release/examples/graphics/graphicsExample
liquid@liquiddeMacBook-Pro graphicsExample % emmake make
make: make
Compiling OF library for Release
Done!

Compiling graphicsExample for Release
Linking bin/em/graphicsExample/index.html for emscripten
/Users/liquid/Desktop/emsdk/upstream/emscripten/em++ -o bin/em/graphicsExample/index.html -O3 -s TOTAL_MEMORY=134217728 --memory-init-file 1 obj/emscripten/Release/src/ofApp.o obj/emscripten/Release/src/main.o /Users/liquid/Desktop/of_v20240228_osx_release/addons/obj/emscripten/Release/ofxEmscripten/src/ofxEmscriptenSoundStream.o /Users/liquid/Desktop/of_v20240228_osx_release/addons/obj/emscripten/Release/ofxEmscripten/src/ofxEmscriptenVideoPlayer.o /Users/liquid/Desktop/of_v20240228_osx_release/addons/obj/emscripten/Release/ofxEmscripten/src/ofxEmscriptenSoundPlayer.o /Users/liquid/Desktop/of_v20240228_osx_release/addons/obj/emscripten/Release/ofxEmscripten/src/ofxEmscriptenVideoGrabber.o /Users/liquid/Desktop/of_v20240228_osx_release/addons/obj/emscripten/Release/ofxEmscripten/src/ofxEmscriptenURLFileLoader.o /Users/liquid/Desktop/of_v20240228_osx_release/addons/obj/emscripten/Release/ofxEmscripten/src/ofxAppEmscriptenWindow.o /Users/liquid/Desktop/of_v20240228_osx_release/libs/openFrameworksCompiled/lib/emscripten/libopenFrameworks.bc -Wl --gc-sections --preload-file bin/data@data --emrun --bind --profiling-funcs -s USE_FREETYPE=1 -s ALLOW_MEMORY_GROWTH=1 -s MAX_WEBGL_VERSION=2 -s WEBGL2_BACKWARDS_COMPATIBILITY_EMULATION=1 -s FULL_ES2 -sFULL_ES3=1 -s USE_PTHREADS=0 --js-library /Users/liquid/Desktop/of_v20240228_osx_release/addons/ofxEmscripten/libs/html5video/lib/emscripten/library_html5video.js --js-library /Users/liquid/Desktop/of_v20240228_osx_release/addons/ofxEmscripten/libs/html5audio/lib/emscripten/library_html5audio.js --shell-file /Users/liquid/Desktop/of_v20240228_osx_release/libs/openFrameworksCompiled/project/emscripten/template.html /Users/liquid/Desktop/of_v20240228_osx_release/libs/FreeImage/lib/emscripten/libfreeimage.a /Users/liquid/Desktop/of_v20240228_osx_release/libs/boost/lib/emscripten/libboost_system.a /Users/liquid/Desktop/of_v20240228_osx_release/libs/boost/lib/emscripten/libboost_filesystem.a /Users/liquid/Desktop/of_v20240228_osx_release/libs/pugixml/lib/emscripten/libpugixml.bc /Users/liquid/Desktop/of_v20240228_osx_release/libs/tess2/lib/emscripten/libtess2.a /Users/liquid/Desktop/of_v20240228_osx_release/libs/uriparser/lib/emscripten/liburiparser.a
clang++: error: unknown argument: '--gc-sections'
em++: error: '/Users/liquid/Desktop/emsdk/upstream/bin/clang++ -target wasm32-unknown-emscripten -fignore-exceptions -fvisibility=default -mllvm -combiner-global-alias-analysis=false -mllvm -enable-emscripten-sjlj -mllvm -disable-lsr --sysroot=/Users/liquid/Desktop/emsdk/upstream/emscripten/cache/sysroot -DEMSCRIPTEN -isystem /Users/liquid/Desktop/emsdk/upstream/emscripten/cache/sysroot/include/freetype2 -Xclang -iwithsysroot/include/fakesdl -Xclang -iwithsysroot/include/compat -O3 -Wl --gc-sections /Users/liquid/Desktop/of_v20240228_osx_release/libs/openFrameworksCompiled/lib/emscripten/libopenFrameworks.bc -c -o /var/folders/63/p36n6bnn21lc5x59z00d7nqw0000gn/T/emscripten_temp_cpygkmyl/libopenFrameworks_0.o' failed (returned 1)
make[1]: *** [bin/em/graphicsExample/index.html] Error 1
make: *** [Release] Error 2
emmake: error: 'make' failed (returned 2)

any ideas? btw,thank you so much for looking into it

[Jonathhhan]

It should work with: #7909

[liquidzym]

great,thank you so much @Jonathhhan

[azuremous]

I still have problems with using pugixml, something like xmlExample, svgExample, pugiXmlExample.

I tried to delete --gc-sections from config.emscripten.default.mk, and then I got this error:

error: expected top-level entity
1 | <U+0000>asm<U+0001><U+0000><U+0000><U+0000><U+0001><81><80><80><U+0000><U+001B><U+0002><U+007F><U+007F><U+0001><U+007F><U+0003><U+007F><U+007F><U+007F><U+0000><U+0004><U+007F><U+007F><U+007F><U+007F><U+0001><U+007F><U+0003><U+007F><U+007F><U+007F><U+0001><U+007F><U+0004><U+007F><U+007F><U+007F><U+007F><U+0000><U+0001><U+007F><U+0001><U+007F><U+0001><U+007F><U+0000><U+0002><U+007F>|<U+0001>|<U+0002><U+007F><U+007F><U+0001>|<U+0002><U+007F>}<U+0001>}<U+0002><U+007F>~<U+0001>~<U+0003><U+007F>~~<U+0001><U+0005><U+007F><U+007F><U+007F><U+007F><U+007F><U+0001><U+007F><U+0002><U+007F>|<U+0001><U+007F><U+0002><U+007F>}<U+0001><U+007F><U+0002><U+007F><U+0001><U+007F><U+0002><U+007F><U+007F><U+0000><U+0006><U+007F><U+007F><U+007F><U+007F><U+007F><U+007F><U+0000>`
| ^
1 error generated.

I tried to change pugixml.bc to pugixml.o, but it didn't work.
However the ones that don't use pugixml have no problem.

emcc (Emscripten gcc/clang-like replacement + linker emulating GNU ld) 3.1.56 (cf90417346b78455089e64eb909d71d091ecc055)

[azuremous]

I downloaded the pugixml library and created a new .bc file with this command:
emcc -c pugixml.cpp -o pugixml.bc -emit-llvm
I also removed -Wl,--gc-sections from config.emscripten.default.mk, and it works now.
(-Wl show this warning.
warning: unknown warning option '-Wl' [-Wunknown-warning-option])

[Jonathhhan]

@azuremous it should be solved here: openframeworks/apothecary#367

I also removed -Wl,--gc-sections from config.emscripten.default.mk, and it works now.

Was it not working or just showing the warning?

[azuremous]

@Jonathhhan
The '-WL' option only displayed a warning, but the '--gc-sections' option resulted in an error, so I removed it.

[Jonathhhan]

@azuremous alright, added that to the PR #7909