5.3 Variable substitution in paths

To avoid having to edit your configuration files too often, the compiler allows you to specify the following variables in the paths that you feed to the compiler:

FPCVER

is replaced by the compiler’s full version string.

FPCDATE

is replaced by the compiler’s date.

FPCTARGET

is replaced by the compiler’s target CPU (deprecated).

FPCCPU

is also replaced by the compiler’s target CPU.

TARGET

is replaced by the compiler’s target OS (deprecated).

FPCOS

is replaced by the compiler’s target OS.

To have these variables subsituted, just insert them with a $ prepended, as follows:

 -Fu/usr/lib/fpc/$FPCVER/rtl/$FPCOS

 -Fu/usr/lib/fpc/0.99.12a/rtl/linux

These replacemens are valid on the command-line and also in the configuration file.

On the linux command-line, you must be careful to escape the $ since otherwise the shell will expand the variable for you, which may have undesired effects.