Use libpy_handle instead of libpython

Author: isuruf

src/pyinit.jl

@@ -86,6 +86,8 @@ function __init__()
         error("Using Conda.jl python, but location of $python seems to have moved to $(Conda.PYTHONDIR).  Re-run Pkg.build(\"PyCall\") and restart Julia.")
     end
 
+    global libpy_handle
+
     # issue #189
     libpy_handle = libpython === nothing ? C_NULL :
         Libdl.dlopen(libpython, Libdl.RTLD_LAZY|Libdl.RTLD_GLOBAL)

src/startup.jl

@@ -125,15 +125,15 @@ if libpython == nothing
     end
 else
     macro pysym(func)
-        :(($(esc(func)), libpython))
+        :(Libdl.dlsym(libpy_handle, $(esc(func))))
     end
     macro pyglobal(name)
-        :(cglobal(($(esc(name)), libpython)))
+        :(convert(Ptr{Cvoid}, Libdl.dlsym(libpy_handle, $(esc(name)))))
     end
     macro pyglobalobj(name)
-        :(cglobal(($(esc(name)), libpython), PyObject_struct))
+        :(convert(Ptr{PyObject_struct}, Libdl.dlsym(libpy_handle, $(esc(name)))))
     end
     macro pyglobalobjptr(name)
-        :(unsafe_load(cglobal(($(esc(name)), libpython), Ptr{PyObject_struct})))
+        :(unsafe_load(convert(Ptr{Ptr{PyObject_struct}}, Libdl.dlsym(libpy_handle, $(esc(name))))))
     end
 end