merged

dlib/cmake_find_blas.txt

@@ -49,10 +49,6 @@ if (UNIX)
    include(CheckLibraryExists)
 
 
-   # Don't try to use the Intel MKL when we are building a MATLAB mex file
-   # since it will usually conflict with MATLAB's copy of the MKL and cause
-   # problems.
-   if (NOT BUILDING_MATLAB_MEX_FILE)
     # Search for the needed libraries from the MKL.  We will try to link against the mkl_rt
     # file first since this way avoids linking bugs in some cases.
     find_library(mkl_rt mkl_rt ${mkl_search_path})
@@ -65,6 +61,13 @@ if (UNIX)
         set(lapack_found 1)
         set(found_intel_mkl 1)
         message(STATUS "Found Intel MKL BLAS/LAPACK library")
+        if (BUILDING_MATLAB_MEX_FILE)
+            message(STATUS "\n!!!! Don't forget to set the BLAS_VERSION and LAPACK_VERSION environment variables to !!!!\n!!!! ${blas_libraries} so MATLAB doesn't explode when you run this mex file !!!!\n")
+        endif()
+    endif()
+
+    if (BUILDING_MATLAB_MEX_FILE)
+        return()
     endif()
 
     if (NOT found_intel_mkl)
@@ -86,7 +89,6 @@ if (UNIX)
             message(STATUS "Found Intel MKL BLAS/LAPACK library")
         endif()
     endif()
-   endif()
 
 
    # try to find some other LAPACK libraries if we didn't find the MKL

dlib/matlab/call_matlab.h

@@ -8,6 +8,14 @@
 
 // ----------------------------------------------------------------------------------------
 
+void check_for_ctrl_c();
+/*!
+    ensures
+        - If the user of MATLAB has pressed ctrl+c then this function will throw an
+          exception.
+!*/
+
+// ----------------------------------------------------------------------------------------
 
 class matlab_struct 
 {

dlib/matlab/cmake_mex_wrapper

@@ -6,6 +6,7 @@
 cmake_minimum_required(VERSION 2.8.4)
 
 set(BUILDING_MATLAB_MEX_FILE true)
+set(CMAKE_POSITION_INDEPENDENT_CODE True)
 
 # Find MATLAB's include directory and needed libraries 
 find_program(MATLAB_EXECUTABLE matlab PATHS
@@ -67,6 +68,7 @@ INCLUDE(InstallRequiredSystemLibraries)
 
 MACRO(add_mex_function name )
    ADD_LIBRARY(${name} MODULE ${name}.cpp )
+
     # Change the output file extension to a mex extension.
    if (WIN32)
       set_target_properties(${name} PROPERTIES SUFFIX ".mexw64")

dlib/matlab/mex_wrapper.cpp

@@ -253,6 +253,8 @@ namespace mex_binding
 
 // -------------------------------------------------------
 
+    struct user_hit_ctrl_c {};
+
     struct invalid_args_exception
     {
         invalid_args_exception(const std::string& msg_): msg(msg_) {}
@@ -897,7 +899,7 @@ namespace mex_binding
         }
         else if (is_same_type<dlib::rgb_pixel, type>::value)
         {
-            mwSize dims[3] = {(unsigned long)item.nr(), (unsigned long)item.nc(), 3};
+            mwSize dims[3] = {(mwSize)item.nr(), (mwSize)item.nc(), 3};
             plhs = mxCreateNumericArray(3, dims, mxUINT8_CLASS, mxREAL);
 
             assign_image_to_matlab((dlib::uint8*)mxGetData(plhs), item);
@@ -1573,6 +1575,10 @@ namespace mex_binding
             mexErrMsgIdAndTxt("mex_function:validate_and_populate_arg",
                               ("Input" + e.msg).c_str());
         }
+        catch (user_hit_ctrl_c& )
+        {
+            // do nothing, just return to matlab
+        }
         catch (dlib::error& e)
         {
             mexErrMsgIdAndTxt("mex_function:error",
@@ -2371,6 +2377,14 @@ void call_matlab (
     call_matlab("feval", funct);
 }
 
+extern "C" bool utIsInterruptPending();
+void check_for_ctrl_c(
+)
+{
+    if (utIsInterruptPending())
+        throw mex_binding::user_hit_ctrl_c();
+}
+
 // ----------------------------------------------------------------------------------------
 // ----------------------------------------------------------------------------------------