X-Git-Url: http://www.chiark.greenend.org.uk/ucgi/~ian/git?a=blobdiff_plain;f=Makefile;h=b457d711b0b519333abb0534469c51f12fbd7524;hb=a3466b322998a623a15907a5c3520b4f30d1c050;hp=1ccf437362a42c00ec77790e3837e4003c8521eb;hpb=82f88c53ddb84e42c770c23feb9bb0ee18341188;p=chiark-tcl.git

diff --git a/Makefile b/Makefile
index 1ccf437..b457d71 100644
--- a/Makefile
+++ b/Makefile
@@ -1,7 +1,18 @@
 
-SUBDIRS=	base adns hbytes crypto dgram tuntap
+SUBDIRS=	base adns hbytes cdb crypto dgram tuntap
+
+ifneq ($(wildcard /usr/include/wiringPi.h /usr/include/arm-*/wiringPi.h),)
+SUBDIRS+=	wiringpi
+endif
 
 default: all
 
 clean all:
 	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
+# %