Fixed libsodium building on Illumos / Solaris. (#1070)

link_libsodium.sh

@@ -3,6 +3,7 @@
 set -e
 
 readonly CWD=$PWD
+readonly OS=$(uname)
 readonly LIBSODIUM_VERSION="1.0.17"
 
 test -d tmp/libsodium || mkdir -p tmp/libsodium
@@ -12,7 +13,13 @@ cd tmp/libsodium
 curl --retry 5 --retry-delay 0 -sL https://github.com/jedisct1/libsodium/releases/download/$LIBSODIUM_VERSION/libsodium-$LIBSODIUM_VERSION.tar.gz -o libsodium-$LIBSODIUM_VERSION.tar.gz
 tar xfz libsodium-$LIBSODIUM_VERSION.tar.gz --strip-components=1
 
-./configure --prefix $PWD
+CONFIGURE_ARGS="--prefix ${PWD}"
+if [[ "${OS}" == "SunOS" ]]; then
+  # On Illumos / Solaris libssp causes linking issues when building wal-g.
+  CONFIGURE_ARGS="${CONFIGURE_ARGS} --disable-ssp"
+fi      
+
+./configure ${CONFIGURE_ARGS}
 make && make check && make install
 
 # Remove shared libraries for using static