diff --git a/Makefile.in b/Makefile.in
index bf7bda583..4b268c883 100644
--- a/Makefile.in
+++ b/Makefile.in
@@ -157,7 +157,8 @@ endif
 	rm -rf autom4te.cache
 
 cppcheck: $(O:.o=.cc) $(srcdir)/dosify.c $(srcdir)/version.c
-	cppcheck --enable=all -f $(INCLUDE_PATH) $^
+	cppcheck --enable=all -f --suppressions $(srcdir)/cppcheck.sup \
+	         $(INCLUDE_PATH) $^
 
 cppcheck-all:
 	$(foreach dir,$(SUBDIRS),$(MAKE) -C $(dir) cppcheck && ) true
diff --git a/cppcheck.sup b/cppcheck.sup
new file mode 100644
index 000000000..76827e0c2
--- /dev/null
+++ b/cppcheck.sup
@@ -0,0 +1,3 @@
+// These are correct and are used to find the base (zero) pin.
+thisSubtraction:netlist.h:4119
+thisSubtraction:netlist.h:4128
diff --git a/vpi/Makefile.in b/vpi/Makefile.in
index a9720dbd7..18e06489a 100644
--- a/vpi/Makefile.in
+++ b/vpi/Makefile.in
@@ -87,7 +87,8 @@ distclean: clean
 	rm -f vpi_config.h stamp-vpi_config-h
 
 cppcheck: $(O:.o=.c) $(OPP:.o=.cc) $(M:.o=.c) $(V:.o=.c)
-	cppcheck --enable=all -f $(INCLUDE_PATH) $^
+	cppcheck --enable=all -f --suppressions $(srcdir)/cppcheck.sup \
+	         $(INCLUDE_PATH) $^
 
 Makefile: $(srcdir)/Makefile.in ../config.status
 	cd ..; ./config.status --file=vpi/$@
diff --git a/vpi/cppcheck.sup b/vpi/cppcheck.sup
new file mode 100644
index 000000000..fa763acd9
--- /dev/null
+++ b/vpi/cppcheck.sup
@@ -0,0 +1,41 @@
+// The following three files are copied directly from GTKWave and we do not
+// have control over them. Tony has a specific programming style so these
+// problems will not be fixed.
+
+// fstapi.c from GTKWave
+variableScope:fstapi.c:1485
+variableScope:fstapi.c:1602
+variableScope:fstapi.c:1642
+variableScope:fstapi.c:1643
+variableScope:fstapi.c:2336
+variableScope:fstapi.c:2651
+variableScope:fstapi.c:2655
+variableScope:fstapi.c:2656
+
+// lxt2_write.c from GTKWave
+variableScope:lxt2_write.c:63
+variableScope:lxt2_write.c:523
+variableScope:lxt2_write.c:581
+variableScope:lxt2_write.c:587
+variableScope:lxt2_write.c:1602
+variableScope:lxt2_write.c:2049
+
+// lxt_write.c from GTKWave
+variableScope:lxt_write.c:31
+variableScope:lxt_write.c:587
+variableScope:lxt_write.c:640
+variableScope:lxt_write.c:1056
+variableScope:lxt_write.c:1057
+variableScope:lxt_write.c:1058
+variableScope:lxt_write.c:1841
+variableScope:lxt_write.c:2586
+variableScope:lxt_write.c:2587
+variableScope:lxt_write.c:2588
+variableScope:lxt_write.c:2589
+
+// The routines in sys_random.c are exact copies from IEEE1364-2005 and
+// they have scope warnings that we need to ignore.
+variableScope:sys_random.c:46
+variableScope:sys_random.c:69
+variableScope:sys_random.c:92
+variableScope:sys_random.c:147