Is this the syntax that will make freebsd make happy?

Makefile.am

@@ -25,8 +25,6 @@ include src/include.am
 include doc/include.am
 include contrib/include.am
 
-export TESTING_TOR_BINARY
-
 EXTRA_DIST+= \
 	ChangeLog					\
 	INSTALL						\

src/or/include.am

@@ -123,9 +123,9 @@ src_or_tor_cov_LDADD = src/or/libtor-testing.a src/common/libor-testing.a \
 	src/common/libor-event-testing.a src/trunnel/libor-trunnel-testing.a \
 	@TOR_ZLIB_LIBS@ @TOR_LIB_MATH@ @TOR_LIBEVENT_LIBS@ @TOR_OPENSSL_LIBS@ \
 	@TOR_LIB_WS32@ @TOR_LIB_GDI@ @CURVE25519_LIBS@ @TOR_SYSTEMD_LIBS@
-TESTING_TOR_BINARY = $(top_builddir)/src/or/tor-cov
+export TESTING_TOR_BINARY = $(top_builddir)/src/or/tor-cov
 else
-TESTING_TOR_BINARY = $(top_builddir)/src/or/tor
+export TESTING_TOR_BINARY = $(top_builddir)/src/or/tor
 endif
 
 ORHEADERS = \