Ticket #12387: g95.patch

numpy/distutils/fcompiler/g95.py

@@ -23 +23 @@
         'compiler_f77' : ["g95", "-ffixed-form"],
         'compiler_fix' : ["g95", "-ffixed-form"],
         'compiler_f90' : ["g95"],
-        'linker_so'    : ["g95","-shared"],
+        'linker_so'    : ["g95", "-g", "-Wall"],
         'archiver'     : ["ar", "-cr"],
         'ranlib'       : ["ranlib"]
         }
@@ -37 +37 @@
         return ['-O']
     def get_flags_debug(self):
         return ['-g']
+    def get_flags_linker_so(self):
+        opt = self.linker_so[1:]
+        if sys.platform=='darwin':
+            # MACOSX_DEPLOYMENT_TARGET must be at least 10.3. This is
+            # a reasonable default value even when building on 10.4 when using
+            # the official Python distribution and those derived from it (when
+            # not broken).
+            target = os.environ.get('MACOSX_DEPLOYMENT_TARGET', None)
+            if target is None or target == '':
+                target = '10.3'
+            major, minor = target.split('.')
+            if int(minor) < 3:
+                minor = '3'
+                warnings.warn('Environment variable '
+                    'MACOSX_DEPLOYMENT_TARGET reset to %s.%s' % (major, minor))
+            os.environ['MACOSX_DEPLOYMENT_TARGET'] = '%s.%s' % (major,
+                minor)
+
+            opt.extend(['-undefined', 'dynamic_lookup', '-bundle'])
+        else:
+            opt.append("-shared")
+        if sys.platform[:5]=='sunos':
+            # SunOS often has dynamically loaded symbols defined in the
+            # static library libg2c.a  The linker doesn't like this.  To
+            # ignore the problem, use the -mimpure-text flag.  It isn't
+            # the safest thing, but seems to work. 'man gcc' says:
+            # ".. Instead of using -mimpure-text, you should compile all
+            #  source code with -fpic or -fPIC."
+            opt.append('-mimpure-text')
+        return opt
+
 
 if __name__ == '__main__':
     from distutils import log