Hi,
I’m Trying to use shared libraries and looking at *the instructions* <https://github.com/kripken/emscripten/wiki/Linking> on MAIN_MODULE=1 and SIDE_MODULE=1. The basics seem to be woking, but the main module got much larger than expected. It jumped from 800k to 2.7 meg. So I’ll looking to determine If i am missing one of the options, or using in correctly. I reduced it to a simple example and tried to make a small *.js output file following the tips in the maximally minimal discussion thread <https://groups.google.com/forum/#!searchin/emscripten-discuss/maximally/emscripten-discuss/FWMrXIQNwCg/IWUTI3PdRYMJ> #include <stdio.h> int main() { puts("hello world\n"); } Building that program with no optimization yields about 360k. If the standard set of options for smaller builds is used that can shrink down to about 56k, roughly the size mentioned in the other thread. This is the command line used: emcc linktest.c -Os --memory-init-file 0 -s NO_FILESYSTEM=1 -s NO_BROWSER=1 -o linktest.js When adding -s MAIN_MODULE=1, the size bumped to 890k, (1.7meg it optimization is omitted). The side modules I want to build will have minimal need for standard libraries beyond what main uses so I’d still like to still trip out most of the standard library. Looking at the the linktest.js file I can see that larger file has SDL, and many parts (all??) of the the standard C and C++ libraries. I was able to get it a bit smaller (790k) by setting the following environment variables. EMCC_FORCE_STDLIBS=libc EMCC_ONLY_FORCED_STDLIBS=1 As a check I also tried: EMCC_FORCE_STDLIBS=1. That bumped it to 3.7Meg, Well that pulled in the entire standard set (as expected), the flags are having an effect. So, is there a way to strip out unused symbol in the main module but still allow some dlopen() functionality? Thank you, Paul -- You received this message because you are subscribed to the Google Groups "emscripten-discuss" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. For more options, visit https://groups.google.com/d/optout.
