File fix-pthreads-missing.patch of Package cpp-netlib
diff -Nur cpp-netlib-0.12.0-final/libs/network/src/CMakeLists.txt new/libs/network/src/CMakeLists.txt
--- cpp-netlib-0.12.0-final/libs/network/src/CMakeLists.txt 2016-03-30 13:38:49.000000000 +0200
+++ new/libs/network/src/CMakeLists.txt 2016-04-08 00:44:58.373851583 +0200
@@ -42,6 +42,7 @@
PROPERTIES VERSION ${CPPNETLIB_VERSION_STRING}
SOVERSION ${CPPNETLIB_VERSION_MAJOR}
PUBLIC_HEADER "${CPP-NETLIB_HEADERS}")
+target_link_libraries(cppnetlib-client-connections ${CMAKE_THREAD_LIBS_INIT})
if (OPENSSL_FOUND)
target_link_libraries(cppnetlib-client-connections ${OPENSSL_LIBRARIES})
endif ()