Fix getaddrinfo and gethostbyname build problems on Solaris.

ConfigureChecks.cmake

@@ -35,7 +35,15 @@ if (WIN32)
   set(HAVE_SELECT TRUE)
 else (WIN32)
   check_function_exists(getaddrinfo HAVE_GETADDRINFO)
+  if (NOT HAVE_GETADDRINFO)
+    check_library_exists("socket" "getaddrinfo" "" HAVE_LIB_GETADDRINFO)
+    set(HAVE_GETADDRINFO 1)
+  endif (NOT HAVE_GETADDRINFO)
   check_function_exists(gethostbyname HAVE_GETHOSTBYNAME)
+  if (NOT HAVE_GETHOSTBYNAME)
+    check_library_exists("nsl" "gethostbyname" "" HAVE_LIB_GETHOSTBYNAME)
+    set(HAVE_GETHOSTBYNAME 1)
+  endif (NOT HAVE_GETHOSTBYNAME)
   check_function_exists(poll HAVE_POLL)
   check_function_exists(select HAVE_SELECT)
   check_function_exists(regcomp HAVE_REGCOMP)

libssh/CMakeLists.txt

@@ -35,6 +35,20 @@ if (WIN32)
   )
 endif (WIN32)
 
+if (HAVE_LIB_GETHOSTBYNAME)
+  set(LIBSSH_LINK_LIBRARIES
+    ${LIBSSH_LINK_LIBRARIES}
+    nsl
+  )
+endif (HAVE_LIB_GETHOSTBYNAME)
+
+if (HAVE_LIB_GETADDRINFO)
+  set(LIBSSH_LINK_LIBRARIES
+    ${LIBSSH_LINK_LIBRARIES}
+    socket
+  )
+endif (HAVE_LIB_GETADDRINFO)
+
 if (CRYPTO_LIBRARY)
   set(LIBSSH_PRIVATE_INCLUDE_DIRS
     ${LIBSSH_PRIVATE_INCLUDE_DIRS}