Patch from Bastian Blank:

    The updated patch adds a config option to explicitely enable 64 bit
    arithmetic.

    Also it removes the arith prototype from libbb.h as it is not used
    outside of ash.

    Bastian

this patch has been slightly modified by Erik for cleanliness.

1 files changed, 9 insertions, 0 deletions

diff --git a/shell/Config.in b/shell/Config.in
index b064ed41b..c8f4a936c 100644
--- a/shell/Config.in
+++ b/shell/Config.in
@@ -67,6 +67,15 @@ config CONFIG_ASH_MATH_SUPPORT
         help
           Enable math support in the ash shell.
 
+config CONFIG_ASH_MATH_SUPPORT_64
+        bool "    Extend Posix math support to 64 bit"
+        default n
+        depends on CONFIG_ASH_MATH_SUPPORT
+        help
+          Enable 64-bit math support in the ash shell.  This will make
+          the shell slightly larger, but will allow computation with very
+          large numbers.
+
 config CONFIG_ASH_GETOPTS
         bool "  Enable getopt builtin to parse positional parameters"
         default n