diff --git a/archiver/xz/xz.conf b/archiver/xz/xz.conf
index 1dbbb20d3..4f167b814 100644
--- a/archiver/xz/xz.conf
+++ b/archiver/xz/xz.conf
@@ -14,4 +14,5 @@
 
 var_append GCC_WRAPPER_APPEND ' ' '-std=gnu99'
 var_append SYSGCC_WRAPPER_APPEND ' ' '-std=gnu99'
-var_append makeopt ' ' 'CFLAGS="-std=gnu99"'
+export CC="$CC -std=gnu99"
+var_append confopt ' ' ' --disable-lzmadec --disable-lzmainfo --disable-lzma-links'