These commands are similar to the C preprocessor in terms of purpose and functionality. They allow file inclusion, conditional compilation, executable header packing, and processes execution during the build process. Note: none of these commands allow use of variables.
This command will include 'file' as if it was part of the original script. Note that if a file is included in another directory, the current directory is still where the script was compiled from (not where the included file resides). If the compiler can't find the file it will look for it in every include directory. See !addincludedir for more information.
\S1{addincludedir} !addincludedir
\c directory
Adds another include directory to the include directories list. This list is searched when !include is used. This list's initial value is $\{NSISDIR\}\\Include alone.
This option makes the compiler an external EXE packer (such as Petite or UPX) to compress the executable header. Specify a temporary file name (such as "temp.dat") and a command line (such as "C:\\program files\\upx\\upx -9 temp.dat") to compress the header.
This command will execute 'command' using a call to system(), and if the return value compared (using 'compare') to 'comparevalue' is false, execution will halt. 'compare' can be '<' or '>' or '<>' or '='.
