My compilation fails on ubuntu 12.10 with 300mb memory available (750mb total, 350mb to MySQL), 1.5ghz, I am trying to rework wt's basic hello world file into a simple ajax page. I'm pretty sure it's not a memory issue at heart since I was able to compile the original hello.C file with g++ -O3 -o hello hello.C -lwtfcgi -lwt -lboost_signals
.
I'm sure I'm screwing up the c++ since I ripped out the guts of HelloApplication::HelloApplication(const WEnvironment& env)
: WApplication(env)
and put in the example from the Wt::Json example
HelloApplication::HelloApplication(const WEnvironment& env)
: WApplication(env)
{
Json::Object result;
Json::parse("{ "
" \"a\": \"That's great\", "
" \"b\": true "
"}",
result);
std::cerr << "Size: " << result.size(); << std::endl; // Size: 2
WString s = result.get("a");
bool b = result.get("b");
std::cerr << "a: " << s << ", b: " << b << std::endl; // a: That's great, b: true
}
I'm new to c++, so I have almost no idea what I'm doing. All I can do is execute the simplest of c++ files.
Here's the original source to the hello world file.
Here's where I got the json sample from.
** Repercussions**
Wow, my respect level just went through the roof for the power of c++.
This has totally destroyed my VPS. I can't restart. I can't even reinstall my distro.
When I finally go into production, I think I'm going to set up a totally different dev system to prevent something like this killing my production system.
As a potential quick fix: You can reduce the memory usage by doing
make -j 1
which tells the build tool to use only one CPU. Worked for me.