Reference/!ifndef: Difference between revisions
From NSIS Wiki
Jump to navigationJump to search
No edit summary |
No edit summary |
||
| Line 5: | Line 5: | ||
The opposite of !ifdef. The lines will be compiled when the gflag has not been defined. | The opposite of !ifdef. The lines will be compiled when the gflag has not been defined. | ||
<highlight-nsis>!undef SOMETHING | <highlight-nsis>!def SOMETHING | ||
!ifdef SOMETHING | |||
!echo "SOMETHING is defined" | |||
!endif</highlight-nsis> | |||
!undef SOMETHING | |||
!ifndef SOMETHING | !ifndef SOMETHING | ||
!echo "SOMETHING is not defined" | !echo "SOMETHING is not defined" | ||
!endif</highlight-nsis> | !endif</highlight-nsis> | ||
Revision as of 15:09, 27 May 2013
!ifndef
gflag [bcheck gflag [...]]]
The opposite of !ifdef. The lines will be compiled when the gflag has not been defined.
!def SOMETHING !ifdef SOMETHING !echo "SOMETHING is defined" !endif
!undef SOMETHING !ifndef SOMETHING
!echo "SOMETHING is not defined"
!endif</highlight-nsis>
