package readline: enable shared build

src/readline.mk

@@ -21,12 +21,10 @@ define $(PKG)_BUILD
     $(SED) -i 's,^ *case SIGQUIT:.*,,' '$(1)/signals.c'
     $(SED) -i 's,^ *case SIGTSTP:.*,,' '$(1)/signals.c'
     cd '$(1)' && ./configure \
-        --host='$(TARGET)' \
-        --disable-shared \
-        --prefix='$(PREFIX)/$(TARGET)' \
+        $(MXE_CONFIGURE_OPTS) \
         --enable-multibyte \
         --without-purify \
         --with-curses \
         LIBS='-lpdcurses'
-    $(MAKE) -C '$(1)' -j '$(JOBS)' install SHARED_LIBS=
+    $(MAKE) -C '$(1)' -j '$(JOBS)' install $(if $(BUILD_STATIC),SHARED_LIBS=,SHLIB_LIBS='-lpdcurses')
 endef