libarchive: FEATURE_LZMA_FAST should be visible if FEATURE_SEAMLESS_LZMA

While at it, tweak some config help texts.

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>

1 files changed, 8 insertions, 0 deletions

diff --git a/archival/Config.src b/archival/Config.src
index 0c97f3d7c..4bb46f167 100644
--- a/archival/Config.src
+++ b/archival/Config.src
@@ -27,4 +27,12 @@ config FEATURE_SEAMLESS_Z
 
 INSERT
 
+config FEATURE_LZMA_FAST
+        bool "Optimize lzma for speed"
+        default n
+        depends on UNLZMA || LZCAT || LZMA || FEATURE_SEAMLESS_LZMA
+        help
+          This option reduces decompression time by about 25% at the cost of
+          a 1K bigger binary.
+
 endmenu