-SUBDIRS= base adns hbytes cdb crypto
-# dgram tuntap
+SUBDIRS= base adns hbytes cdb crypto dgram
+
+ifneq ($(wildcard /usr/include/linux/if_tun.h),)
+SUBDIRS+= tuntap
+endif
+
+ifneq ($(wildcard /usr/include/wiringPi.h /usr/include/arm-*/wiringPi.h),)
+SUBDIRS+= wiringpi
+endif
default: all
-clean all:
+clean all debian-substvars:
set -e; for d in $(SUBDIRS); do $(MAKE) -C $$d $@; done
+
+# To find undefined symbols when implementing, for example:
+#
+# liberator:chiark-tcl> LD_LIBRARY_PATH=:adns:base:cdb:crypto:dgram:hbytes:tuntap tclsh8.3
+# % load chiark_tcl_tuntap-1.so
+# couldn't load file "chiark_tcl_tuntap-1.so": tuntap/chiark_tcl_tuntap-1.so: undefined symbol: cht_tunsocket_entries
+# %