Move FEATURE_BUFFERS_USE_foo options to library tuning

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

1 files changed, 24 insertions, 0 deletions

diff --git a/libbb/Config.src b/libbb/Config.src
index 18a40f2..00804e3 100644
--- a/libbb/Config.src
+++ b/libbb/Config.src
@@ -7,6 +7,30 @@ menu "Busybox Library Tuning"
 
 INSERT
 
+choice
+	prompt "Buffer allocation policy"
+	default FEATURE_BUFFERS_USE_MALLOC
+	help
+	  There are 3 ways BusyBox can handle buffer allocations:
+	  - Use malloc. This costs code size for the call to xmalloc.
+	  - Put them on stack. For some very small machines with limited stack
+	    space, this can be deadly. For most folks, this works just fine.
+	  - Put them in BSS. This works beautifully for computers with a real
+	    MMU (and OS support), but wastes runtime RAM for uCLinux. This
+	    behavior was the only one available for BusyBox versions 0.48 and
+	    earlier.
+
+config FEATURE_BUFFERS_USE_MALLOC
+	bool "Allocate with Malloc"
+
+config FEATURE_BUFFERS_GO_ON_STACK
+	bool "Allocate on the Stack"
+
+config FEATURE_BUFFERS_GO_IN_BSS
+	bool "Allocate in the .bss section"
+
+endchoice
+
 config PASSWORD_MINLEN
 	int "Minimum password length"
 	default 6