mosh: add package

Maintainer: Jakub Tymejczyk <jakub@tymejczyk.pl>
Compile tested: ramips, Xiaomi Router 3G, fc54256
Run tested: ramips, Xiaomi Router 3G, 0f54d96

Description:
Mosh is "Remote terminal application that allows roaming, supports
intermittent connectivity, and provides intelligent local echo and line
editing of user keystrokes".

Project's site: https://mosh.org

Makefile and patch taken from: https://github.com/mchwalisz/mosh-openwrt
updated by me

Signed-off-by: Jakub Tymejczyk <jakub@tymejczyk.pl>
(Makefile cleanup and size optimizations)
Signed-off-by: Rosen Penev <rosenp@gmail.com>

net/mosh/Makefile

@@ -0,0 +1,115 @@
+#
+# Copyright (C) 2011-2013 Entware
+# Copyright (C) 2018 Jakub Tymejczyk <jakub.tymejczyk.pl>
+# This is free software, licensed under the GNU General Public License v2.
+# See /LICENSE for more information.
+#
+
+include $(TOPDIR)/rules.mk
+
+PKG_NAME:=mosh
+PKG_VERSION:=1.3.2
+PKG_RELEASE:=1
+
+PKG_SOURCE:=$(PKG_NAME)-$(PKG_VERSION).tar.gz
+PKG_SOURCE_URL:=https://mosh.org/
+PKG_HASH:=da600573dfa827d88ce114e0fed30210689381bbdcff543c931e4d6a2e851216
+
+PKG_MAINTAINER:=Rosen Penev <rosenp@gmail.com>
+PKG_LICENSE:=GPL-3.0-or-later
+PKG_LICENSE_FILES:=COPYING
+
+PKG_FIXUP:=autoreconf
+PKG_INSTALL:=1
+PKG_BUILD_PARALLEL:=1
+PKG_USE_MIPS16:=0
+
+include $(INCLUDE_DIR)/package.mk
+
+define Package/mosh/Default
+  SECTION:=utils
+  CATEGORY:=Utilities
+  TITLE:=Mosh mobile shell
+  DEPENDS:=+libncursesw +libopenssl +protobuf
+  URL:=https://mosh.org/
+endef
+
+define Package/mosh-client
+$(call Package/mosh/Default)
+ TITLE+= (client)
+endef
+
+define Package/mosh-server
+$(call Package/mosh/Default)
+ TITLE+= (server)
+endef
+
+define Package/mosh-full
+$(call Package/mosh/Default)
+ TITLE+= (full)
+ DEPENDS:= \
+    +mosh-client \
+    +mosh-server \
+    +perlbase-essential \
+    +perlbase-socket \
+    +perlbase-xsloader \
+    +perlbase-getopt \
+    +perlbase-errno \
+    +perlbase-config \
+    +perlbase-io \
+    +perlbase-symbol \
+    +perlbase-selectsaver \
+    +perlbase-posix \
+    +perlbase-autoloader \
+    +perlbase-fcntl \
+    +perlbase-tie
+endef
+
+
+define Package/mosh/Default/description
+ Mosh is a remote terminal application that allows roaming, supports
+ intermittent connectivity, and provides intelligent local echo and line
+ editing of user keystrokes.
+endef
+
+define Package/mosh-client/description
+$(call Package/mosh/Default/description)
+ This is a mosh client.
+endef
+
+define Package/mosh-server/description
+$(call Package/mosh/Default/description)
+ This is a mosh server.
+endef
+
+define Package/mosh-full/description
+$(call Package/mosh/Default/description)
+ This is a full package with perl wrapper script
+endef
+
+CONFIGURE_ARGS += \
+	--disable-compile-warnings \
+	--disable-hardening \
+	--without-utempter
+
+TARGET_CXXFLAGS += -ffunction-sections -fdata-sections -flto -std=c++11
+TARGET_LDFLAGS += -Wl,--gc-sections -lncurses
+
+define Package/mosh-client/install
+	$(INSTALL_DIR) $(1)/usr/bin
+	$(INSTALL_BIN) $(PKG_INSTALL_DIR)/usr/bin/mosh-client $(1)/usr/bin/
+endef
+
+define Package/mosh-server/install
+	$(INSTALL_DIR) $(1)/usr/bin
+	$(INSTALL_BIN) $(PKG_INSTALL_DIR)/usr/bin/mosh-server $(1)/usr/bin/
+endef
+
+define Package/mosh-full/install
+	$(INSTALL_DIR) $(1)/usr/bin
+	$(INSTALL_BIN) $(PKG_INSTALL_DIR)/usr/bin/mosh $(1)/usr/bin/
+endef
+
+$(eval $(call BuildPackage,mosh-client))
+$(eval $(call BuildPackage,mosh-server))
+$(eval $(call BuildPackage,mosh-full))

net/mosh/patches/010-ffs.patch

@@ -0,0 +1,12 @@
+--- a/configure.ac
++++ b/configure.ac
+@@ -425,7 +425,8 @@ AC_CHECK_DECL([mach_absolute_time],
+ AC_CHECK_DECLS([__builtin_ctz])
+ 
+ AC_CHECK_DECLS([ffs], [], [],
+-  [[#include <strings.h>]])
++  [[#define _GNU_SOURCE
++#include <strings.h>]])
+ 
+ AC_CHECK_DECLS([be64toh, betoh64, bswap64, __builtin_bswap64], [], [],
+   [[#if defined(HAVE_ENDIAN_H)