diff options
Diffstat (limited to 'emcc')
| -rwxr-xr-x | emcc | 40 |
1 files changed, 28 insertions, 12 deletions
@@ -120,18 +120,34 @@ There is NO warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR P ''' exit(0) elif sys.argv[1] == '--help': - print '''OVERVIEW: Emscripten "gcc-compatible" driver script, using LLVM/Clang - Many but not all gcc options can be used. - -USAGE: emcc [options] <inputs> - -OPTIONS: - -O0 No optimization. Enables runtime assertions. This is the default. - -O1 Basic optimizations. Disables runtime assertions. - -O2 Like -O2, but includes loop recreation optimization (relooper). - -O3 Like -O3, but includes closure compiler advanced optimizations. - Use with care and read the closure compiler docs. -''' + this = os.path.basename('em++' if os.environ.get('EMMAKEN_CXX') else 'emcc') + + print '''%s [options] file... + +Most normal gcc/g++ options will work, for example: + --help Display this information + --version Display compiler version information + +Options that are modified or new in %s include: + -O0 [..] default + -OX TODO + -s OPTION=VALUE JavaScript code generation option + 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 + +The target file, if specified (-o <target>), defines what will +be generated: + <name>.js JavaScript (default) + <name>.o LLVM bitcode + <name>.bc LLVM bitcode + <name>.html HTML with embedded JavaScript + +''' % (this, this) exit(0) # If this is a configure-type thing, just do that |