diff -c /Users/john/Development/Gnucash-Build/Gnucash-master-git/src/libchipcard-5.0.4/configure.ac\~ /Users/john/Development/Gnucash-Build/Gnucash-master-git/src/libchipcard-5.0.4/configure.ac
--- a/configure.ac	Tue Dec 15 06:46:03 2015
+++ b/configure.ac	Mon Mar 13 13:43:03 2017
@@ -413,7 +413,7 @@
 elif test "$OSYSTEM" = "osx" ; then
   AC_MSG_CHECKING(for pcsc includes)
 #  pcsc_includes="-I\$(libchipcard_symlinkdir)/PCSC"
-  pcsc_includes="-I/System/Library/Frameworks/PCSC.framework/Headers"
+  pcsc_includes="-I${SDKDIR}/System/Library/Frameworks/PCSC.framework/Headers"
   AC_MSG_RESULT($pcsc_includes)
   AC_MSG_CHECKING(for pcsc libs)
   pcsc_libraries=""

Diff finished.  Mon Mar 13 13:49:02 2017