Improved how the unit tests build all/source.cpp

dlib/CMakeLists.txt

@@ -568,6 +568,11 @@ if (NOT TARGET dlib)
 
    endif ()  ##### end of if NOT DLIB_ISO_CPP_ONLY ##########################################################
 
+   # Allow the unit tests to ask us to compile the all/source.cpp file just to make sure it compiles.
+   if (DLIB_TEST_COMPILE_ALL_SOURCE_CPP)
+      ADD_LIBRARY(dlib_all_source_cpp STATIC all/source.cpp) 
+   endif()
+
    # Install the library
    if (NOT DLIB_IN_PROJECT_BUILD)
        set (LIB_INSTALL_DIR lib CACHE STRING "Install location of libraries (e.g. lib32 or lib64 for multilib installations)")

dlib/test/CMakeLists.txt

@@ -9,6 +9,9 @@ cmake_minimum_required(VERSION 2.8.4)
 set (target_name dtest)
 PROJECT(${target_name})
 
+# compile the dlib/all/source.cpp file into its own object just to make sure it compiles
+set(DLIB_TEST_COMPILE_ALL_SOURCE_CPP ON)
+
 include(../cmake)
 
 # This variable contains a list of all the tests we are building
@@ -177,7 +180,6 @@ TARGET_LINK_LIBRARIES(${target_name} dlib )
 if (NOT DLIB_NO_GUI_SUPPORT)
    add_subdirectory(gui)
    add_subdirectory(examples)
-   add_subdirectory(all_source)
 endif()
 
 

dlib/test/all_source/CMakeLists.txt

-#
-# This is a CMake makefile.  You can find the cmake utility and
-# information about it at http://www.cmake.org
-#
-
-cmake_minimum_required(VERSION 2.8.4)
-
-set (target_name test_all_source_builds)
-PROJECT(${target_name})
-include(../../cmake_utils/use_cpp_11.cmake)
-ADD_LIBRARY(${target_name} STATIC ../../all/source.cpp) 
-
-