message: use -Wall for cmake
diff: @@ -44,6 +44,15 @@ include(PlatformCheck)
  include(CheckLibraryExists)
  find_package(PkgConfig)
  +##
  +## Compiler checks
  +##
  +include(CheckCXXCompilerFlag)
  +check_cxx_compiler_flag(-Wall temp)
  +if(temp)
  + set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -Wall")
  +endif()
  +
  ##
  ## Try to find libssl
  ##
  