NSIS/Docs/src/compiler.but

\C{compcommands} Compiler Utility Commands

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. 

\H{include} !include

\e{!include file}

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).  

\H{cd} !cd

\e{!cd new_path}

This command will change the compiler to the new directory, new_path. new_path can be relative or absolute.  

\H{echo} !echo

\e{!echo message} 

This command will echo a message to the user compiling the script.  

\H{error} !error

\e{!error [message]}

This commnd will issue an error to the script compiler and will stop execution of the script. You can also add a message to this error.  

\H{packhdr} !packhdr

\e{!packhdr tempfile command}

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.  

\H{system} !system

\e{!system command [compare comparevalue]}

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 '=' or 'ignore'.  

\H{warning} !warning

\e{!warning [message]} 

This command will issue a warning to the script compiler. You can also add a message to this warning.  

\H{verbose} !verbose

\e{!verbose level} 

This command will set the level of verbosity. 4=all, 3=no script, 2=no info, 1=no warnings, 0=none