[PATCH 2/2] threads: Be less strict when deciding whether to build libssh_threads.

[Raphael Kubo da Costa <rakuco@xxxxxxxxxxx>]

As mentioned in the previous commit, there are cases where
CMAKE_HAVE_THREADS_LIBRARY is not set and pthreads _is_ being used: one can
pass -DTHREADS_HAVE_PTHREAD_ARG=1 to CMake directly so that it just passes
-pthread to the compiler/linker and does not set CMAKE_HAVE_THREADS_LIBRARY.

Since we are only interested in knowing whether any threading library has
been found, we should use CMAKE_THREAD_LIBS_INIT instead (Threads_FOUND
would also work).

Note that, at the moment, there is only a pthreads backend available in
threads/, so if it is not found configuration will fail because CMake will
try to create a library from an empty set of source files.
---
 src/CMakeLists.txt | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/src/CMakeLists.txt b/src/CMakeLists.txt
index 83435d0..fa8c5c2 100644
--- a/src/CMakeLists.txt
+++ b/src/CMakeLists.txt
@@ -288,6 +288,6 @@ if (WITH_STATIC_LIB)
   )
 endif (WITH_STATIC_LIB)
 
-if (CMAKE_HAVE_THREADS_LIBRARY)
+if (CMAKE_THREAD_LIBS_INIT)
     add_subdirectory(threads)
-endif (CMAKE_HAVE_THREADS_LIBRARY)
+endif (CMAKE_THREAD_LIBS_INIT)
-- 
1.8.5.2