Help with using `__declspec'

[romydmisc]

Hi All,

I've written a simple C program that executes linux shell commands and
returns an output. I export the C program to library and use it in C#
project.

Following is the code that works on windows 

#include <stdio.h>
#include "libserverusage.h"
#define DllExport __declspec( dllexport )

DllExport int GetServerUsage()
{
      int usage = 1;
#if LINUX

        FILE * fp;
        char buf[1024];
        int n = 0;
        char * cmd = "vmstat | gawk '/0/ {tot=tot+1; id=id+$16} END {print 100 -
id/tot}'";
        fp = popen(cmd,"r");
        n = fread(buf,1,sizeof(buf),fp);
        buf[n] = '\0';
/*      printf("%s\n", buf);
        printf("Characters read: %d\n\n", n);
        */
        fclose(fp);
        usage = atoi(buf);

#endif
      return usage;
}

But when i try to compile it on linux, i get these errors:

libserverusage.c: In function `__declspec':
libserverusage.c:33: error: parse error before '{' token
libserverusage.c:39: error: parameter `n' is initialized
libserverusage.c:40: error: parameter `cmd' is initialized
libserverusage.c:41: error: parse error before "fp"
libserverusage.c:40: error: declaration for parameter `cmd' but no such
parameter
libserverusage.c:39: error: declaration for parameter `n' but no such
parameter
libserverusage.c:38: error: declaration for parameter `buf' but no such
parameter
libserverusage.c:37: error: declaration for parameter `fp' but no such
parameter
libserverusage.c:33: error: declaration for parameter `GetServerUsage' but
no such parameter

BTW the code compiles with gcc compiler, if i copy the contents of this
function to main method.

This is how i compile my code:
gcc -DLINUX -shared -fPIC -Wall -O2 libserverusage.c -o
../bin/Release/libserverusage.so

Can someone help me fix this?

Thanks,
Romy
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