diff options
Diffstat (limited to 'emcc')
| -rwxr-xr-x | emcc | 24 |
1 files changed, 7 insertions, 17 deletions
@@ -15,14 +15,6 @@ For example, compilation will be translated into calls to clang with -emit-llvm, and linking will be translated into calls to llvm-link, and so forth. -emcc is only meant to *COMPILE* source code into LLVM bitcode. It does -not do optimizations (in fact, it will disable -Ox flags and warn you -about that). The reason is that doing such optimizations early can lead -to bitcode that Emscripten cannot process properly, or can process but -not fully optimize. You can (and probably should) still run LLVM -optimizations though, by telling emscripten.py to do so (or run LLVM -opt yourself, but be careful with the parameters you pass). - Example uses: * For configure, instead of ./configure, cmake, etc., run emconfiguren.py @@ -68,11 +60,7 @@ Example uses: env.Replace(LD = LLVM_LD) TODO: Document all relevant setup changes -After setting that up, run your build system normally. It should generate -LLVM instead of the normal output, and end up with .ll files that you can -give to Emscripten. Note that this tool doesn't run Emscripten itself. Note -also that you may need to do some manual fiddling later, for example to -link files that weren't linked, and them llvm-dis them. +After setting that up, run your build system normally. Note the appearance of em++ instead of emcc for the C++ compiler. This is needed for cases where we get @@ -138,10 +126,7 @@ Options that are modified or new in %s include: passed into the emscripten compiler --typed-arrays <mode> 0: no typed arrays 1: parallel typed arrays - 2: shared typed arrays (default) - --llvm-opts <mode> 0: none (default) - 1: safe/portable - 2: unsafe/unportable + 2: shared (C-like) typed arrays (default) The target file, if specified (-o <target>), defines what will be generated: @@ -279,6 +264,11 @@ elif use_compiler: if newargs[i] == '-s': settings_changes.append(newargs[i+1]) newargs[i] = newargs[i+1] = '' + elif newargs[i].startswith('--typed-arrays'): + assert '=' not in newargs[i], 'Invalid typed arrays parameter (do not use "=")' + settings_changes.append('USE_TYPED_ARRAYS=' + newargs[i+1]) + newargs[i] = '' + newargs[i+1] = '' newargs = [ arg for arg in newargs if arg is not '' ] newargs += CC_ADDITIONAL_ARGS |