wget: fix shared build

src/wget.mk

@@ -19,7 +19,8 @@ define $(PKG)_BUILD
     cd '$(1)' && ./configure \
         $(MXE_CONFIGURE_OPTS) \
         --with-ssl=gnutls \
-        CFLAGS='-DIN6_ARE_ADDR_EQUAL=IN6_ADDR_EQUAL -D_WIN32_WINNT=0x0600 $(if $(BUILD_STATIC),-DGNUTLS_INTERNAL_BUILD,)'
+        CFLAGS='-DIN6_ARE_ADDR_EQUAL=IN6_ADDR_EQUAL -D_WIN32_WINNT=0x0600 $(if $(BUILD_STATIC),-DGNUTLS_INTERNAL_BUILD,)'\
+        LDFLAGS='$(if $(BUILD_SHARED),-Wl$(comma)--allow-multiple-definition,)'
     $(MAKE) -C '$(1)/lib' -j '$(JOBS)'
     $(MAKE) -C '$(1)/src' -j '$(JOBS)' install-binPROGRAMS
 endef