conflicting types for ‘gsl_matrix_complex_equal’

[gsanchezd]

Error installing similarity:
ERROR: Failed to build gem native extension.

/usr/local/Cellar/gsl/1.15/include/gsl/gsl_matrix_complex_double.h:227: error: previous declaration of ‘gsl_matrix_complex_equal’ was here
make: *** [matrix_complex.o] Error 1

i think the error is related to the v1.15 of gsl

this post show how to make it work with version 1.14 of gsl
http://bretthard.in/2012/03/getting-related_posts-lsi-and-gsl-to-work-in-jekyll/#.T7Vay3lYtH0