relay: add missing gcrypt lib in CMake and autotools files

This fixes build on Cygwin.

src/plugins/relay/CMakeLists.txt

@@ -50,6 +50,8 @@ if(GNUTLS_FOUND)
   list(APPEND LINK_LIBS ${GNUTLS_LIBRARY})
 endif()
 
+list(APPEND LINK_LIBS ${GCRYPT_LDFLAGS})
+
 target_link_libraries(relay ${LINK_LIBS} coverage_config)
 
 install(TARGETS relay LIBRARY DESTINATION ${WEECHAT_LIBDIR}/plugins)

src/plugins/relay/Makefile.am

@@ -17,7 +17,7 @@
 # along with WeeChat.  If not, see <https://www.gnu.org/licenses/>.
 #
 
-AM_CPPFLAGS = -DLOCALEDIR=\"$(datadir)/locale\" $(ZLIB_CFLAGS) $(GNUTLS_CFLAGS)
+AM_CPPFLAGS = -DLOCALEDIR=\"$(datadir)/locale\" $(ZLIB_CFLAGS) $(GCRYPT_CFLAGS) $(GNUTLS_CFLAGS)
 
 libdir = ${weechat_libdir}/plugins
 
@@ -61,6 +61,6 @@ relay_la_SOURCES = relay.c \
                    weechat/relay-weechat-protocol.h
 
 relay_la_LDFLAGS = -module -no-undefined
-relay_la_LIBADD  = $(RELAY_LFLAGS) $(ZLIB_LFLAGS) $(GNUTLS_LFLAGS)
+relay_la_LIBADD  = $(RELAY_LFLAGS) $(ZLIB_LFLAGS) $(GCRYPT_LFLAGS) $(GNUTLS_LFLAGS)
 
 EXTRA_DIST = CMakeLists.txt