cpp-netlib/build$ cmake ../ -DCPP-NETLIB_BUILD_SINGLE_LIB=ON-- Optional package ICU was not found-- Boost version: 1.53.0-- Found the following Boost libraries:--   system--   regex--   date_time--   filesystem--   program_optionsC++ Compiler ID: GNUC++ Flags: -std=c++11 -Wall link flags: -- CPP-NETLIB options selected:--   CPP-NETLIB_BUILD_SHARED_LIBS: OFF  (Build cpp-netlib as shared libraries: OFF, ON)--   CPP-NETLIB_BUILD_SINGLE_LIB:  ON   (Build cpp-netlib into a single library: OFF, ON)--   CPP-NETLIB_BUILD_TESTS:       ON   (Build the unit tests: ON, OFF)--   CPP-NETLIB_BUILD_EXAMPLES:    ON   (Build the examples using cpp-netlib: ON, OFF)--   CPP-NETLIB_ALWAYS_LOGGING:    OFF  (Allow cpp-netlib to log debug messages even in non-debug mode: ON, OFF)--   CPP-NETLIB_DISABLE_LOGGING:   OFF  (Disable logging definitely, no logging code will be generated or compiled: ON, OFF)--   CPP-NETLIB_DISABLE_LIBCXX:    OFF  (Disable using libc++ when building with clang: ON, OFF)-- CMake build options selected:-- Boost version: 1.53.0-- Found the following Boost libraries:--   system--   filesystemC++ Flags: -std=c++11 link flags: -- Configuring doneCMake Error at CMakeLists.txt:152 (add_library):  Cannot find source file:    message.cpp  Tried extensions .c .C .c++ .cc .cpp .cxx .m .M .mm .h .hh .h++ .hm .hpp  .hxx .in .txx