dropbear: make ssh compression support configurable

Adds config option to enable compression support which is usefull
when using a terminal sessions over a slow link. Impact on binary
size is negligible but additional 60 kB (uncompressed) is needed for
a shared zlib library.

Signed-off-by: Marcin Jurkowski <marcin1j@gmail.com>

diff --git a/package/network/services/dropbear/Config.in b/package/network/services/dropbear/Config.in
index 7c2edd79f23708f9ef01c6a62a54073b0c7a33ed..ca0af9d5e078f3a4d0d9e02e034cd1e03ce40a2e 100644 (file)
--- a/package/network/services/dropbear/Config.in
+++ b/package/network/services/dropbear/Config.in
@@ -32,6 +32,15 @@ config DROPBEAR_ECC
 
                Increases binary size by about 23 kB (MIPS).
 
+config DROPBEAR_ZLIB
+       bool "Enable compression"
+       default n
+       help
+               Enables compression using shared zlib library.
+
+               Increases binary size by about 0.1 kB (MIPS) and requires additional 62 kB (MIPS)
+               for a shared zlib library.
+
 config DROPBEAR_UTMP
        bool "Utmp support"
        default n

diff --git a/package/network/services/dropbear/Makefile b/package/network/services/dropbear/Makefile
index 7302db273c9db4768c9eeaf8f4b631e4bd74446c..29460ede51f5abc7c6c45cd7d94c53beef5545ac 100644 (file)
--- a/package/network/services/dropbear/Makefile
+++ b/package/network/services/dropbear/Makefile
@@ -9,7 +9,7 @@ include $(TOPDIR)/rules.mk
 
 PKG_NAME:=dropbear
 PKG_VERSION:=2017.75
-PKG_RELEASE:=3
+PKG_RELEASE:=4
 
 PKG_SOURCE:=$(PKG_NAME)-$(PKG_VERSION).tar.bz2
 PKG_SOURCE_URL:= \
@@ -23,7 +23,7 @@ PKG_LICENSE_FILES:=LICENSE libtomcrypt/LICENSE libtommath/LICENSE
 PKG_BUILD_PARALLEL:=1
 PKG_USE_MIPS16:=0
 
-PKG_CONFIG_DEPENDS:=CONFIG_TARGET_INIT_PATH CONFIG_DROPBEAR_ECC CONFIG_DROPBEAR_CURVE25519
+PKG_CONFIG_DEPENDS:=CONFIG_TARGET_INIT_PATH CONFIG_DROPBEAR_ECC CONFIG_DROPBEAR_CURVE25519 CONFIG_DROPBEAR_ZLIB
 
 include $(INCLUDE_DIR)/package.mk
 
@@ -44,6 +44,7 @@ define Package/dropbear
   SECTION:=net
   CATEGORY:=Base system
   TITLE:=Small SSH2 client/server
+  DEPENDS:= +DROPBEAR_ZLIB:zlib
 endef
 
 define Package/dropbear/description
@@ -74,7 +75,7 @@ CONFIGURE_ARGS += \
        --disable-loginfunc \
        $(if $(CONFIG_DROPBEAR_PUTUTLINE),,--disable-pututline) \
        --disable-pututxline \
-       --disable-zlib \
+       $(if $(CONFIG_DROPBEAR_ZLIB),,--disable-zlib) \
        --enable-bundled-libtom
 
 TARGET_CFLAGS += -DARGTYPE=3 -ffunction-sections -fdata-sections