Fix Mac OS build

you still need to export LDFLAGS=-L/usr/lib/ though

setup.py

@@ -173,12 +173,12 @@ class BuildExtCommand(build_ext):
             ]
         else:
             HOME = environ.get('PER_USER_DIRECTORY') or environ.get('HOME')
-            PEPLIBNAME = 'libpEpEngine.so'
+            PEPLIBNAME = 'pEpEngine.so'
             LIBPEPA = 'libpEpAdapter.a'
-            BOOSTLIBNAME = 'libboost_python37.so'
+            BOOSTLIBNAME = 'boost_{boost_python:s}-mt.so'
             SYS_INCLUDES = ['/usr/local/pEp/include', '/usr/local/include', '/usr/include']
             SYS_SHARES = ['/usr/local/pEp/share', '/usr/local/share', '/usr/share']
-            SYS_LIB_PREFIXES = ['/usr/local/pEp/bin', '/usr/local/bin', '/usr/bin', '/usr/lib/x86_64-linux-gnu/']
+            SYS_LIB_PREFIXES = ['/usr/local/pEp/bin', '/usr/local/bin', '/usr/bin']
 
         use_local_incl = (self.local or os.path.isfile(
             join(HOME, 'include', 'pEp', 'pEpEngine.h')) )
@@ -251,7 +251,7 @@ class BuildExtCommand(build_ext):
         global module_pEp
         extend_once( module_pEp.include_dirs, [ENGINE_INC, LIBPEPA_INC, BOOST_INC, ASN1C_INC] )
         extend_once( module_pEp.library_dirs, [ENGINE_LIB, LIBPEPA_LIB, BOOST_LIB] )
-        extend_once( module_pEp.libraries, ['pEpEngine', 'boost_python3', 'boost_locale'] )
+        extend_once( module_pEp.libraries, ['pEpEngine', 'boost_python37-mt', 'boost_locale-mt'] )
 
         if self.debug:
             module_pEp.extra_compile_args = ['-O0', '-g', '-UNDEBUG', '-std=c++14']