diff --git a/src/signer/Makefile.am b/src/signer/Makefile.am
index 2aca76a0..e20a9d1e 100644
--- a/src/signer/Makefile.am
+++ b/src/signer/Makefile.am
@@ -26,4 +26,8 @@ noinst_HEADERS = \
 	opensc-crypto.h opensc-support.h signer.h 
 
 install-exec-local: install-libLTLIBRARIES
+if HAVE_SSL
+if HAVE_ASSUAN
 	-$(LN_S) -f $(libdir)/opensc-signer.so $(DESTDIR)$(plugindir)/
+endif
+endif
diff --git a/src/sslengines/Makefile.am b/src/sslengines/Makefile.am
index 5b7ac86e..5b9c34a5 100644
--- a/src/sslengines/Makefile.am
+++ b/src/sslengines/Makefile.am
@@ -32,9 +32,11 @@ engine_pkcs11_la_LIBADD = @LIBCRYPTOA@ ../pkcs11/libpkcs11.la
 engine_pkcs11_la_LDFLAGS = @OPENSSL_LDFLAGS@ -module -avoid-version
 
 install-exec-local: install-libLTLIBRARIES
+if HAVE_ENGINE
 if HAVE_BUNDLES
 	-${top_srcdir}/macos/libtool-bundle $(DESTDIR)$(libdir)/engine_opensc.so \
 		$(DESTDIR)$(bundledir)/
 	-${top_srcdir}/macos/libtool-bundle $(DESTDIR)$(libdir)/engine_pkcs11.so \
 		$(DESTDIR)$(bundledir)/
 endif
+endif