Made cmake script work a little better in projects that involve a lot of

subdirectories and create a lot of executables.

dlib/cmake

+# This is a CMake file meant to be included via include()
 
 cmake_minimum_required(VERSION 2.6.4)
 
@@ -7,21 +8,19 @@ if (POLICY CMP0054)
     cmake_policy(SET CMP0054 NEW)
 endif()
 
-# Don't add dlib if it's already been added to the cmake project
-if (NOT TARGET dlib)
 
-    # Determine the path to dlib.
-    string(REGEX REPLACE "cmake$" "" dlib_path ${CMAKE_CURRENT_LIST_FILE})
+# Determine the path to dlib.
+string(REGEX REPLACE "cmake$" "" dlib_path ${CMAKE_CURRENT_LIST_FILE})
 
-    if (CMAKE_COMPILER_IS_GNUCXX)
+if (CMAKE_COMPILER_IS_GNUCXX)
     # By default, g++ won't warn or error if you forget to return a value in a
     # function which requires you to do so.  This option makes it give a warning
     # for doing this. 
     add_definitions("-Wreturn-type")
-    endif()
+endif()
 
-    # Setup some options to allow a user to enable SSE and AVX instruction use.  
-    if (CMAKE_COMPILER_IS_GNUCXX OR "${CMAKE_CXX_COMPILER_ID}" STREQUAL "Clang" 
+# Setup some options to allow a user to enable SSE and AVX instruction use.  
+if (CMAKE_COMPILER_IS_GNUCXX OR "${CMAKE_CXX_COMPILER_ID}" STREQUAL "Clang" 
                                 OR "${CMAKE_CXX_COMPILER_ID}" STREQUAL "GNU"
                                 OR "${CMAKE_CXX_COMPILER_ID}" STREQUAL "Intel")
     option(USE_SSE2_INSTRUCTIONS "Compile your program with SSE2 instructions" OFF)
@@ -34,7 +33,7 @@ if (NOT TARGET dlib)
     elseif(USE_SSE2_INSTRUCTIONS)
         add_definitions(-msse2)
     endif()
-    elseif (MSVC OR "${CMAKE_CXX_COMPILER_ID}" STREQUAL "MSVC") # else if using Visual Studio 
+elseif (MSVC OR "${CMAKE_CXX_COMPILER_ID}" STREQUAL "MSVC") # else if using Visual Studio 
     # Use SSE2 by default when using Visual Studio.
     option(USE_SSE2_INSTRUCTIONS "Compile your program with SSE2 instructions" ON)
     # Visual Studio 2005 didn't support SSE4 
@@ -66,16 +65,19 @@ if (NOT TARGET dlib)
         endif()
         add_definitions(-DDLIB_HAVE_SSE2)
     endif()
-    endif()
+endif()
+
 
+# Add folder containing dlib to the include search path.
+INCLUDE_DIRECTORIES(${dlib_path}/..)
 
-    # Add folder containing dlib to the include search path.
-    INCLUDE_DIRECTORIES(${dlib_path}/..)
+# This is really optional, but nice.  It will make sure the build mode 
+# created by cmake is always release by default.
+include(${dlib_path}/release_build_by_default)
 
-    # This is really optional, but nice.  It will make sure the build mode 
-    # created by cmake is always release by default.
-    include(${dlib_path}/release_build_by_default)
 
+# Don't add dlib if it's already been added to the cmake project
+if (NOT TARGET dlib)
     add_subdirectory(${dlib_path} dlib_build)
 endif()