The following compiler directories are defined by the makefile:
     
- 
BASEDIR 
 - Is set to the current directory if the pwd command is available. If not, it is set
     to ’.’.
                                                                            
                                                                            
     
 - 
COMPILER_INCDIR 
 - Is a space-separated list of include file paths. Each directory in
     the list is prepended with -Fi and added to the compiler options. Set by the incdir
     keyword in the Compiler section.
     
 - 
COMPILER_LIBDIR 
 - Is a space-separated list of library paths. Each directory in the list
     is prepended with -Fl and added to the compiler options. Set by the libdir keyword
     in the Compiler section.
     
 - 
COMPILER_OBJDIR 
 - Is  a  list  of  object  file  directories,  separated  by  spaces.  Each
     directory in the list is prepended with -Fo and added to the compiler options. Set by
     the objdir keyword in the Compiler section.
     
 - 
COMPILER_TARGETDIR 
 - This  directory  is  added  as  the  output  directory  of  the
     compiler, where all units and executables are written, i.e. it gets -FE prepended. It is
     set by the targetdir keyword in the Compiler section.
     
 - 
COMPILER_TARGETUNITDIR 
 - If set, this directory is added as the output directory
     of the compiler, where all units and executables are written, i.e. it gets -FU prepended.It
     is set by the targetdir keyword in the Dirs section.
     
 - 
COMPILER_UNITDIR 
 - Is a list of unit directories, separated by spaces. Each directory
     in the list is prepended with -Fu and is added to the compiler options. Set by the
     unitdir keyword in the Compiler section.
     
 - 
GCCLIBDIR 
 - (linux only) Is set to the directory where libgcc.a is. If needgcclib is set
     to True in the Libs section, then this directory is added to the compiler command line
     with -Fl.
     
 - 
OTHERLIBDIR 
 - Is a space-separated list of library paths. Each directory in the list is
     prepended with -Fl and added to the compiler options. If it is not defined on linux,
     then the contents of the /etc/ld.so.conf file is added.
 
The following directories are used for installs:
     
- 
INSTALL_BASEDIR 
 - Is the base for all directories where units are installed. By default,
     On linux, this is set to $(INSTALL_PREFIX)/lib/fpc/$(RELEASEVER).
On other systems, it is set to $(PREFIXINSTALLDIR). You can also set it with the
     basedir variable in the Install section.
      - 
INSTALL_BINDIR 
 - Is set to $(INSTALL_BASEDIR)/bin on linux, and
$(INSTALL_BASEDIR)/bin/$(OS_TARGET) on other systems. This is the place where
     binaries are installed.
      - 
INSTALL_DATADIR 
 - The directory where data files are installed. Set by the Data key
     in the Install section.
                                                                            
                                                                            
     
 - 
INSTALL_LIBDIR 
 - Is set to $(INSTALL_PREFIX)/lib on linux,
and $(INSTALL_UNITDIR) on other systems.
      - 
INSTALL_PREFIX 
 - Is set to /usr/local on linux, /pp on dos or Windows NT. Set by
     the prefix keyword in the Install section.
     
 - 
INSTALL_UNITDIR 
 - Is where units will be installed. This is set to
$(INSTALL_BASEDIR)/units/$(OS_TARGET). If the units are compiled as a package,
     $(PACKAGE_NAME) is added to the directory.