tentative patch for runtime verbosity control of libsvm

debian/patches/deb_libsvm_verbosity_control

+--- a/scikits/learn/svm/src/libsvm/libsvm_helper.c
++++ b/scikits/learn/svm/src/libsvm/libsvm_helper.c
+@@ -669,5 +669,33 @@ int free_param(struct svm_parameter *par
+     free(param);
+     return 0;
+ }
+-       
+-                            
++
++/* rely on built-in facility to control verbose output
++ * in the versions of libsvm >= 2.89
++ */
++#if LIBSVM_VERSION && LIBSVM_VERSION >= 289
++
++/* borrowed from original libsvm code */
++static void print_null(const char *s) {}
++
++static void print_string_stdout(const char *s)
++{
++	fputs(s,stdout);
++	fflush(stdout);
++}
++
++/* provide convenience wrapper */
++void svm_set_verbosity(int verbosity_flag){
++	if (verbosity_flag)
++# if LIBSVM_VERSION < 291
++		svm_print_string = &print_string_stdout;
++	else
++		svm_print_string = &print_null;
++# else
++		svm_set_print_string_function(&print_string_stdout);
++	else
++		svm_set_print_string_function(&print_null);
++# endif
++}
++#endif
++
+--- a/scikits/learn/svm/src/libsvm/_libsvm.pyx
++++ b/scikits/learn/svm/src/libsvm/_libsvm.pyx
+@@ -93,7 +93,7 @@ cdef extern from "libsvm_helper.c":
+     int  free_model     (svm_model *)
+     int  free_model_SV  (svm_model *)
+     int  free_param     (svm_parameter *)
+-
++    void svm_set_verbosity(int)
+ 
+ ################################################################################
+ # Wrapper functions

debian/patches/series

 deb_use_system_joblib
 deb_use_system_libraries
+deb_libsvm_verbosity_control