Workaround linker bug in libnoise-c

.travis.yml

@@ -8,7 +8,7 @@ d:
 
 before_install:
   - sudo apt-get -qq update
-  - sudo apt-get install make build-essential pkg-config libtool autoconf automake gettext libevent-dev -y
+  - sudo apt-get install make build-essential pkg-config libtool autoconf automake gettext libevent-dev libssl-dev -y
 
 install:
   - wget -O doveralls "https://github.com/ColdenCullen/doveralls/releases/download/v1.3.1/doveralls_linux_travis"

noise-c.patch

@@ -0,0 +1,23 @@
+diff --git a/src/protocol/internal.c b/src/protocol/internal.c
+index 28e97e6..58e33d6 100644
+--- a/src/protocol/internal.c
++++ b/src/protocol/internal.c
+@@ -28,8 +28,6 @@ NoiseCipherState *noise_aesgcm_new_sodium(void);
+ #endif
+ #if USE_OPENSSL
+ NoiseCipherState *noise_aesgcm_new_openssl(void);
+-#else
+-NoiseCipherState *noise_aesgcm_new_ref(void);
+ #endif
+
+ /**
+@@ -47,9 +45,6 @@ NoiseCipherState *noise_aesgcm_new(void)
+ #if USE_OPENSSL
+     if (!state)
+         state = noise_aesgcm_new_openssl();
+-#else
+-    if (!state)
+-        state = noise_aesgcm_new_ref();
+ #endif
+
+     return state;

travis-ci.sh

@@ -1,5 +1,7 @@
 #!/bin/bash
 
+BASEDIR=${PWD}
+
 git clone git://github.com/jedisct1/libsodium.git
 pushd libsodium
     git checkout 1.0.12
@@ -11,12 +13,11 @@ popd
 
 git clone https://github.com/rweather/noise-c.git
 pushd noise-c
+    patch -p1 -i ${BASEDIR}/noise-c.patch
     ./autogen.sh
     ./configure --with-libsodium --prefix=/usr
-    pushd src
     make
     sudo make install
-    popd
 popd
 
 dub test -b unittest-cov --combined