Hi,
I have a very simple helloworld program that I compiled to wasm using the
following command:
emcc helloworld.cpp -s BINARYEN=1 -o helloworld.html
These are my build steps:
1. Build sdk-1.36.3-64bit from source on windows using VS2015
2. Make a manual fix to file.cpp in binaryen e.g. in wasm::read_file,
template <typename T>
T wasm::read_file(const std::string &filename, bool binary, bool debug) {
if (debug) std::cerr << "Loading '" << filename << "'..." << std::endl;
std::ifstream infile;
auto flags = std::ifstream::in;
if (binary) flags |= std::ifstream::binary;
infile.open(filename, flags);
if (!infile.is_open()) {
std::cerr << "Failed opening '" << filename << "'" << std::endl;
exit(EXIT_FAILURE);
}
infile.seekg(0, std::ios::end);
std::streampos insize = infile.tellg();
if (uint64_t(insize) >= std::numeric_limits<size_t>::max()) {
// Building a 32-bit executable where size_t == 32 bits, we are not
able to create strings larger than 2^32 bytes in length, so must abort here.
std::cerr << "Failed opening '" << filename << "': Input file too
large: " << insize << " bytes. Try rebuilding in 64-bit mode." << std::endl;
exit(EXIT_FAILURE);
}
T input(size_t(insize) + 1, '\0');
infile.seekg(0);
infile.read(&input[0], insize);
return input;
}
change the highlighted line to 'int flags = std::ifstream::in;'
When I try to run it on Chrome Canary (Version 54.0.2831.0 canary (64-bit)),
I get the following error:
helloworld.js:89594 Uncaught Wasm.instantiateModule(): Result = expected
version 0b 00 00 00, found 0a 00 00 00 @+4
Module.asm @ helloworld.js:89594(anonymous function) @ helloworld.js:95297
On Firefox Nightly (51.0a1 (2016-08-09)), I see the following error:
TypeError: wasm error: compile error at offset 8: failed to match binary
version
helloworld.js:89594:18doNativeWasm/Module.asmhttp://localhost:8080/helloworld.js:89594:18<anonymous>
Any advice to fix the above error would be much appreciated. Thanks.
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