Pelles C forum

C language => Expert questions => Topic started by: drCsharp on March 25, 2019, 09:26:05 PM

Title: Remove Unused Imports from Import Table
Post by: drCsharp on March 25, 2019, 09:26:05 PM

Hi Everybody

I'm working with Visual Studio 2012 & 2017 with C++ 11 and Pelles C 9.0 with C++ 11...

When I build a empty program and DLL but they contain lots of unused imports in pe file!

VC++ has 26 imports of KERNEL32 and Pelles has 55 imports of KERNEL32 My project is totally empty!

I need to remove them from linker and compiled file.

I have an DLL is compiled with Pelles C and it only has 4 import that it really use :

Code: [Select]

KERNEL32.dll
          VirtualProtect  ord:0 rva2iat: 000012A0
          GetModuleHandleA  ord:0 rva2iat: 000012A8
          Sleep  ord:0 rva2iat: 000012B0
          CreateThread  ord:0 rva2iat: 000012B8
I want to do the same , I don't need any of those 55 imports and functions , How Can I do it ?

< Referenced File developed in Pelles C Attached >

Regards,
Mike
 

Title: Re: Remove Unused Imports from Import Table
Post by: TimoVJL on March 25, 2019, 09:56:30 PM

Examine this:

Code: [Select]

#define WIN32_LEAN_AND_MEAN
#include <windows.h>

#ifdef _WIN64
#pragma comment(linker, "/ENTRY:DllMainCRTStartup")
#else
#pragma comment(linker, "/ENTRY:_DllMainCRTStartup@12")
#endif
BOOL WINAPI DllMainCRTStartup(HANDLE hDLL, DWORD dwReason, LPVOID lpReserved)
{
if (dwReason == DLL_PROCESS_ATTACH) g_hmod = hDLL;
return TRUE;
}


Title: Re: Remove Unused Imports from Import Table
Post by: drCsharp on March 25, 2019, 10:46:31 PM

Quote from: TimoVJL on March 25, 2019, 09:56:30 PM

Examine this...

TimoVJL (https://forum.pellesc.de/index.php?action=profile;u=25) Wow ! thanks a lot buddy! I was searching for this for 2 days you saved me!
I'm getting really interested in Pelles C !

Where can I find and learn stuffs like this question ? linker and imports, section editing and ...
Thank you Again !