From 3a73f1735437ef08d32e3d14966f813a5ed7dfb9 Mon Sep 17 00:00:00 2001
From: Nicolas Viennot <nicolas@viennot.biz>
Date: Sat, 9 Jan 2016 21:35:13 -0500
Subject: [PATCH] Allow static linking

---
 .gitignore            |  4 ++++
 Makefile.static-build | 49 +++++++++++++++++++++++++++++++++++++++++++
 configure.ac          | 14 +++++++++++++
 3 files changed, 67 insertions(+)
 create mode 100644 Makefile.static-build

diff --git a/.gitignore b/.gitignore
index 0cd63730..93153ede 100644
--- a/.gitignore
+++ b/.gitignore
@@ -21,3 +21,7 @@ cscope.*
 ctags
 *.log
 tmate.1.*
+downloads/
+ext/
+libssh-*/
+msgpack-*/
diff --git a/Makefile.static-build b/Makefile.static-build
new file mode 100644
index 00000000..cb16c961
--- /dev/null
+++ b/Makefile.static-build
@@ -0,0 +1,49 @@
+LIBSSH=libssh-0.7.2
+LIBSSH_URL=https://red.libssh.org/attachments/download/177/$(LIBSSH).tar.xz
+LIBSSH_LIB=ext/lib/libssh.a
+
+MSGPACK=msgpack-1.3.0
+MSGPACK_URL=https://github.com/msgpack/msgpack-c/releases/download/cpp-1.3.0/$(MSGPACK).tar.gz
+MSGPACK_LIB=ext/lib/libmsgpack.a
+
+TMATE_CONFIGURE=PKG_CONFIG_PATH=./ext/lib/pkgconfig
+
+all: tmate
+
+dependencies:
+	apt-get install build-essentials cmake libssl-dev autoconf automake pkg-config libtool libevent-dev libncurses-dev zlib1g-dev
+
+downloads/$(notdir $(LIBSSH_URL)):
+	mkdir -p downloads
+	wget -O $@ $(LIBSSH_URL)
+
+$(LIBSSH)/.ready: downloads/$(notdir $(LIBSSH_URL))
+	tar xf $<
+	touch $@
+
+downloads/$(notdir $(MSGPACK_URL)):
+	mkdir -p downloads
+	wget -O $@ $(MSGPACK_URL)
+
+$(MSGPACK)/.ready: downloads/$(notdir $(MSGPACK_URL))
+	tar xf $<
+	touch $@
+
+$(LIBSSH_LIB): $(LIBSSH)/.ready
+	mkdir -p $(LIBSSH)/build
+	cd $(LIBSSH)/build; ([ -f Makefile ] || cmake -DCMAKE_INSTALL_PREFIX:PATH=$(shell pwd)/ext .. -DWITH_SFTP=OFF -DWITH_SERVER=OFF -DWITH_PCAP=OFF -DWITH_STATIC_LIB=ON -DWITH_GSSAPI=OFF)
+	+make -C $(LIBSSH)/build install
+
+$(MSGPACK_LIB): $(MSGPACK)/.ready
+	mkdir -p $(MSGPACK)/build
+	cd $(MSGPACK)/build; ([ -f Makefile ] || cmake -DCMAKE_INSTALL_PREFIX:PATH=$(shell pwd)/ext ..)
+	+make -C $(MSGPACK)/build install
+
+tmate: $(MSGPACK_LIB) $(LIBSSH_LIB)
+	./autogen.sh
+	$(TMATE_CONFIGURE) ./configure --enable-static
+	+make
+
+clean:
+	rm -rf ext $(LIBSSH) $(MSGPACK)
+	+make clean
diff --git a/configure.ac b/configure.ac
index e8074373..6c1c5b77 100644
--- a/configure.ac
+++ b/configure.ac
@@ -49,6 +49,20 @@ AC_ARG_ENABLE(
 if test "x$found_static" = xyes; then
 	LDFLAGS="$LDFLAGS -static"
 	PKG_CONFIG="pkg-config --static"
+
+	CFLAGS="$CFLAGS -flto"
+	LDFLAGS="$LDFLAGS -flto"
+
+	 PKG_CHECK_MODULES([ZLIB], [zlib], [
+		CPPFLAGS="$ZLIB_CFLAGS $CPPFLAGS"
+		LIBS="$ZLIB_LIBS $LIBS"
+	 ])
+
+	PKG_CHECK_MODULES([LIBCRYPTO], [libcrypto], [
+		CPPFLAGS="$LIBCRYPTO_CFLAGS $CPPFLAGS"
+		LIBS="$LIBCRYPTO_LIBS $LIBS"
+	])
+	AC_CHECK_LIB(dl, dlopen)
 fi
 
 # Is this gcc?