openssl: avoid OPENSSL_SMALL_FOOTPRINT, no-asm

[openwrt/staging/dedeckeh.git] / package / libs / openssl / Config.in

diff --git a/package/libs/openssl/Config.in b/package/libs/openssl/Config.in
index 6a668fe4cd32c62ffe082be43385ebedcf574339..b948aab7093fdb4fec316fc19902f10675d7616c 100644 (file)
--- a/package/libs/openssl/Config.in
+++ b/package/libs/openssl/Config.in
@@ -12,9 +12,23 @@ config OPENSSL_OPTIMIZE_SPEED
                The increase in performance and size depends on the
                target CPU. EC and AES seem to benefit the most.
 
+config OPENSSL_SMALL_FOOTPRINT
+       bool
+       depends on !OPENSSL_OPTIMIZE_SPEED
+       default y if SMALL_FLASH || LOW_MEMORY_FOOTPRINT
+       prompt "Build with OPENSSL_SMALL_FOOTPRINT (read help)"
+       help
+               This turns on -DOPENSSL_SMALL_FOOTPRINT.  This will save only
+               1-3% of of the ipk size.  The performance drop depends on
+               architecture and algorithm.  MIPS drops 13% of performance for
+               a 3% decrease in ipk size.  On Aarch64, for a 1% reduction in
+               size, ghash and GCM performance decreases 90%, while
+               Chacha20-Poly1305 is 15% slower.  X86_64 drops 1% of its size
+               for 3% of performance.  Other arches have not been tested.
+
 config OPENSSL_WITH_ASM
        bool
-       default y if !SMALL_FLASH || !arm
+       default y
        prompt "Compile with optimized assembly code"
        depends on !arc
        help
@@ -46,7 +60,7 @@ config OPENSSL_NO_DEPRECATED
 
 config OPENSSL_WITH_ERROR_MESSAGES
        bool
-       default y if !SMALL_FLASH && !LOW_MEMORY_FOOTPRINT
+       default y if !OPENSSL_SMALL_FOOTPRINT || (!SMALL_FLASH && !LOW_MEMORY_FOOTPRINT)
        prompt "Include error messages"
        help
                This option aids debugging, but increases package size and