Set CLASSESDIR for OSes using unix/classes.pp source

rtl/aix/Makefile.fpc

@@ -58,6 +58,7 @@ PROCINC=$(RTL)/$(CPU_TARGET)
 OSPROCINC=$(RTL)/aix/$(CPU_TARGET)
 UNIXINC=$(RTL)/unix
 UNITPREFIX=rtl
+CLASSESDIR=$(UNIXINC)
 CPU_UNITS=
 CWSTRING_DEPS_OS=$(UNIXINC)/cwstraix.inc
 DYNLIBS_DEPS_OS=$(DLUNIT)$(PPUEXT)

rtl/android/Makefile.fpc

@@ -51,6 +51,7 @@ PROCINC=$(RTL)/$(ARCH)
 UNIXINC=$(RTL)/unix
 OSPROCINC=$(RTL)/linux/$(CPU_TARGET)
 LINUXINC=$(RTL)/linux
+CLASSESDIR=$(UNIXINC)
 DYNLIBS_DEPS_OS=$(DLUNIT)$(PPUEXT)
 DYNLIBSINCDIR=$(UNIXINC)
 DL_DEPS_OS=dlandroid.inc

rtl/dragonfly/Makefile.fpc

@@ -62,6 +62,7 @@ UNITPREFIX=rtl
 CPU_UNITS=
 
 BSD_DEPS_OS=$(SYSCALLUNIT)$(PPUEXT)
+CLASSESDIR=$(UNIXINC)
 DOSDIR=$(UNIXINC)
 
 DYNLIBS_DEPS_OS=$(DLUNIT)$(PPUEXT)

rtl/freebsd/Makefile.fpc

@@ -63,6 +63,7 @@ UNITPREFIX=rtl
 CPU_UNITS=
 BASEUNIX_DEPS_OS=$(SYSCTLUNIT)$(PPUEXT)
 BSD_DEPS_OS=$(SYSCALLUNIT)$(PPUEXT)
+CLASSESDIR=$(UNIXINC)
 DOSDIR=$(UNIXINC)
 DYNLIBS_DEPS_OS=$(DLUNIT)$(PPUEXT)
 DYNLIBSINCDIR=$(UNIXINC)

rtl/netbsd/Makefile.fpc

@@ -62,6 +62,7 @@ TARGETPROCINC=$(RTL)/netbsd/$(CPU_TARGET)
 
 BASEUNIX_DEPS_OS=$(SYSCTLUNIT)$(PPUEXT)
 BSD_DEPS_OS=$(SYSCALLUNIT)$(PPUEXT)
+CLASSESDIR=$(UNIXINC)
 DOSDIR=$(UNIXINC)
 DYNLIBS_DEPS_OS=$(DLUNIT)$(PPUEXT)
 DYNLIBSINCDIR=$(UNIXINC)

rtl/openbsd/Makefile.fpc

@@ -61,6 +61,7 @@ TARGETPROCINC=$(RTL)/openbsd/$(CPU_TARGET)
 
 BASEUNIX_DEPS_OS=$(SYSCTLUNIT)$(PPUEXT)
 BSD_DEPS_OS=$(SYSCALLUNIT)$(PPUEXT)
+CLASSESDIR=$(UNIXINC)
 DOSDIR=$(UNIXINC)
 DYNLIBS_DEPS_OS=$(DLUNIT)$(PPUEXT)
 DYNLIBSINCDIR=$(UNIXINC)

rtl/solaris/Makefile.fpc

@@ -57,6 +57,7 @@ PROCINC=$(RTL)/$(CPU_TARGET)
 OSPROCINC=$(RTL)/solaris/$(CPU_TARGET)
 UNIXINC=$(RTL)/unix
 UNITPREFIX=rtl
+CLASSESDIR=$(UNIXINC)
 CPU_UNITS=
 DOSDIR=$(UNIXINC)
 DYNLIBS_DEPS_OS=$(DLUNIT)$(PPUEXT)