Add workaround for broken gpsim includes.

Signed-off-by: Slávek Banko <slavek.banko@axis.cz>

ConfigureChecks.cmake

@@ -53,6 +53,21 @@ if( NOT WITH_GPSIM )
 
 ##### check for gpsim version
 
+        if( EXISTS ${GPSIM_INCLUDE_DIRS}/gpsim/breakpoints.h )
+          file( STRINGS ${GPSIM_INCLUDE_DIRS}/gpsim/breakpoints.h
+                GPSIM_BROKEN_INCLUDE
+                REGEX "^#include \"../config.h" )
+          if( NOT "${GPSIM_BROKEN_INCLUDE}" STREQUAL "" )
+            message( STATUS "Create fake config.h, due to broken gpsim includes" )
+            list( APPEND CMAKE_REQUIRED_INCLUDES "${CMAKE_BINARY_DIR}/CMakeFiles" )
+            list( APPEND GPSIM_INCLUDE_DIRS "${CMAKE_BINARY_DIR}/src" )
+            if( NOT EXISTS "${CMAKE_BINARY_DIR}/config.h" )
+              file( WRITE "${CMAKE_BINARY_DIR}/config.h"
+                    "/* fake config.h - due to broken gpsim includes */" )
+            endif()
+          endif()
+        endif()
+
         check_cxx_source_compiles( "
         #include <gpsim/interface.h>
         #include <gpsim/gpsim_interface.h>