SetReqStrLen: Allow compile w/ 8192 special build only

Author: Afrow UK (talk, contrib)

Description

Currently (at time of writing) you can't change NSIS_MAX_STRLEN without re-compiling NSIS (or by downloading a special makensis.exe build from the Special Builds page). This was a problem because some NSIS projects would require the special build and some wouldn't, and sometimes we'd compile a project that required the special build, with the normal MakeNSIS build.

This cool snippet of code will stop scripts that need the 8192 NSIS_MAX_STRLEN special build from compiling.

---

Save it into your NSIS Include folder, as e.g. SetReqStrLen.nsh...

The Snippet

!macro SetReqStrLen Req_STRLEN
!define "Check_${NSIS_MAX_STRLEN}"
!ifndef "Check_${Req_STRLEN}"
 !error "You're not using the ${Req_STRLEN} string length special build! \
 ${NSIS_MAX_STRLEN} is no good!"
!else
 !undef "Check_${NSIS_MAX_STRLEN}"
 !undef "SetReqStrLen"
!endif
!macroend
!define SetReqStrLen "!insertmacro SetReqStrLen"

Then, in your own scripts use...

!include SetReqStrLen.nsh
${SetReqStrLen} 8192

If you want your script to compile only on the normal build, change 8192 to 1024.

I made it for kike_velez in this topic.

-Stu