package guile: allow unused vars

src/guile.mk

@@ -30,12 +30,13 @@ define $(PKG)_BUILD
         --disable-shared \
         --without-threads \
         scm_cv_struct_timespec=no \
-        LIBS='-lunistring -lintl -liconv'
+        LIBS='-lunistring -lintl -liconv' \
+        CFLAGS='-Wno-unused-but-set-variable'
     $(MAKE) -C '$(1)' -j '$(JOBS)' schemelib_DATA=
     $(MAKE) -C '$(1)' -j 1 install schemelib_DATA=
 
     '$(TARGET)-gcc' \
-        -W -Wall -Werror -ansi -pedantic \
+        -W -Wall -Werror -ansi -pedantic -Wno-unused-but-set-variable \
         '$(2).c' -o '$(PREFIX)/$(TARGET)/bin/test-guile.exe' \
         `'$(TARGET)-pkg-config' guile-1.8 --cflags --libs`
 endef