Emscripten size comparison between <iostream>, fprintf, and write

hello-fprintf.cpp

#include <stdio.h>

int main()
{
	fprintf(stdout, "hello world\n");
}

hello-iostream.cpp

#include <iostream>

int main()
{
	std::cout << "hello world" << std::endl;
}

hello-write.cpp

#include <unistd.h>

int main()
{
	write(1, "hello world\n", sizeof("hello world\n"));
}

Makefile

all: hello-fprintf.html hello-iostream.html hello-write.html

hello-fprintf.html: hello-fprintf.cpp
	em++ -std=c++11 -O2 hello-fprintf.cpp -o hello-fprintf.bc
	emcc -O2 hello-fprintf.bc -o hello-fprintf.html

hello-iostream.html: hello-iostream.cpp
	em++ -std=c++11 -O2 hello-iostream.cpp -o hello-iostream.bc
	emcc -O2 hello-iostream.bc -o hello-iostream.html

hello-write.html: hello-write.cpp
	em++ -std=c++11 -O2 hello-write.cpp -o hello-write.bc
	emcc -O2 hello-write.bc -o hello-write.html

clean:
	rm -f *.bc *.js *.html *.html.map *.html.mem