try libgsl.so

Author: Tieqiong

setup.py

@@ -95,7 +95,7 @@ def get_gsl_config_win():
 compiler_type = get_compiler_type()
 if compiler_type in ("unix", "cygwin", "mingw32"):
     extra_compile_args = ["-std=c++11", "-Wall", "-Wno-write-strings", "-O3", "-funroll-loops", "-ffast-math"]
-    extra_objects += ((p + "/libgsl.a") for p in gcfg["library_dirs"])
+    extra_objects += ((p + "/libgsl.so") for p in gcfg["library_dirs"])
 elif compiler_type == "msvc":
     define_macros += [("_USE_MATH_DEFINES", None)]
     extra_compile_args = ["/EHs"]