Change stack size for a C++ application in Linux during compilation with GNU compiler

问题

In OSX during C++ program compilation with g++ I use

LD_FLAGS= -Wl,-stack_size,0x100000000

but in SUSE Linux I constantly get errors like:

x86_64-suse-linux/bin/ld: unrecognized option '--stack'

and similar.

I know that it is possible to use

ulimit -s unlimited

but this is not nice as not always can a single user do that.

How can I increase the stack size in Linux with GCC for a single application?

回答1:

You can set the stack size programmatically with setrlimit, e.g.

#include <sys/resource.h>

int main (int argc, char **argv)
{
    const rlim_t kStackSize = 16 * 1024 * 1024;   // min stack size = 16 MB
    struct rlimit rl;
    int result;

    result = getrlimit(RLIMIT_STACK, &rl);
    if (result == 0)
    {
        if (rl.rlim_cur < kStackSize)
        {
            rl.rlim_cur = kStackSize;
            result = setrlimit(RLIMIT_STACK, &rl);
            if (result != 0)
            {
                fprintf(stderr, "setrlimit returned result = %d\n", result);
            }
        }
    }

    // ...

    return 0;
}

Note: even when using this method to increase stack size you should not declare large local variables in main() itself, since you may well get a stack overflow as soon as you enter main(), before the getrlimit/setrlimit code has had a chance to change the stack size. Any large local variables should therefore be defined only in functions which are subsequently called from main(), after the stack size has successfully been increased.

回答2:

Instead of stack_size, use --stack like so:

gcc -Wl,--stack,4194304 -o program program.c

This example should give you 4 MB of stack space. Works on MinGW's GCC, but as the manpage says, "This option is specific to the i386 PE targeted port of the linker" (i.e. only works for outputting Windows binaries). Seems like there isn't an option for ELF binaries.

回答3:

Consider using -fsplit-stack option https://gcc.gnu.org/wiki/SplitStacks

回答4:

Change it with the ulimit bash builtin, or setrlimit(), or at login with PAM (pam_limits.so).

It's a settable user resource limit; see RLIMIT_STACK in setrlimit(2).

http://bytes.com/topic/c/answers/221976-enlarge-stack-size-gcc

来源：https://stackoverflow.com/questions/2275550/change-stack-size-for-a-c-application-in-linux-during-compilation-with-gnu-com

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