Bug is still present in ipsec-tools 0.7.1-1.3. Patch is attached.
diff -ur ipsec-tools-0.7.1/debian/rules ipsec-tools-0.7.1_mod/debian/rules --- ipsec-tools-0.7.1/debian/rules 2009-01-06 10:50:50.000000000 -0500 +++ ipsec-tools-0.7.1_mod/debian/rules 2009-01-06 10:50:39.000000000 -0500 @@ -22,7 +22,7 @@ DEB_BUILD_GNU_TYPE ?= $(shell dpkg-architecture -qDEB_BUILD_GNU_TYPE) -CFLAGS = -Wall -g +CFLAGS = -Wall -g -isystem /usr/include ifneq (,$(findstring noopt,$(DEB_BUILD_OPTIONS))) CFLAGS += -O0
