Using !packhdr: Difference between revisions
Line 40: | Line 40: | ||
!define _Packhdr_Included | !define _Packhdr_Included | ||
!if `${Packhdr}` != upx | !if `${Packhdr}` != upx | ||
!if `${Packhdr}` != upx+noicon | |||
!error `Packhdr must be defined as: noicon, noicon+upx, upx` | |||
!if `${Packhdr}` != upx+noicon | !endif | ||
!endif | !endif | ||
Revision as of 15:16, 24 July 2010
Author: Afrow UK (talk, contrib) |
!packhdr
!packhdr is a useful compile time directive which allows modifications to the built installer executable header before it is written to the finished installer executable file. It can be used to pack the executable header using UPX or edit resources using Resource Hacker. I have used !packhdr for many years in conjunction with some useful batch files to:
- Pack the header (UPX)
- Pack the header (UPX) and remove the installer icon (Resource Hacker)
Batch files
Firstly you will need to download UPX and Resource Hacker and copy upx.exe and reshacker.exe to a new NSIS\Packhdr folder. Then place the following batch files in the NSIS\Packhdr folder:
upx.bat
cd /d %~dp0 upx --best %1
upx+noicon.bat
cd /d %~dp0 ResHacker -delete %1, %1, icongroup,103, del ResHacker.log upx --best %1
Usage
Simply place the following at the top of your NSIS scripts:
!packhdr $%TEMP%\exehead.tmp `"${NSISDIR}\Packhdr\upx.bat" "$%TEMP%\exehead.tmp"`
You can substitute upx.bat with upx+noicon.bat depending on your requirement for the particular installer. I use upx+noicon.bat for utility executables that are written in NSIS but do not serve a purpose as an installation wizard (i.e. SilentInstall silent).
Script header
You can put this code into an NSH file and place it in your NSIS\Include folder:
!ifndef _Packhdr_Included !define _Packhdr_Included !if `${Packhdr}` != upx !if `${Packhdr}` != upx+noicon !error `Packhdr must be defined as: noicon, noicon+upx, upx` !endif !endif !packhdr $%TEMP%\exehead.tmp `"${NSISDIR}\packhdr\${Packhdr}.bat" "$%TEMP%\exehead.tmp"` !undef Packhdr !endif
Usage:
!define Packhdr upx !include Packhdr.nsh