.

setup.py

@@ -29,8 +29,9 @@ import os
 import sys
 
 
-# XXX doc
-def _with_includes(what, *argv, **kw):
+# _with_defaults calls what(*argv, **kw) with kw amended with default build flags.
+# e.g. _with_defaults(_DSO, *argv, **kw)
+def _with_defaults(what, *argv, **kw):
     kw = kw.copy()
     kw['include_dirs'] = [
             '.',
@@ -38,27 +39,12 @@ def _with_includes(what, *argv, **kw):
             './3rdparty/ccan',
             './3rdparty/include',
         ]
-    return what(*argv, **kw)
-
-def PyGoExt(*argv, **kw):
-    return _with_includes(_PyGoExt, *argv, **kw)
-
-def DSO(*argv, **kw):
-    return _with_includes(_DSO, *argv, **kw)
-
 
-
-#_bigfile = Extension('wendelin.bigfile._bigfile',
-_bigfile = PyGoExt('wendelin.bigfile._bigfile',
-            sources = [
-                'bigfile/_bigfile.c',
-            ],
-            define_macros       = [('_GNU_SOURCE',None)],
-            language            = 'c',
-            extra_compile_args  = [
+    ccdefault = []
+    if kw.get('language') == 'c':
+        ccdefault += [
             '-std=gnu99',           # declarations inside for-loop
             '-fplan9-extensions',   # anonymous-structs + simple inheritance
-                '-fvisibility=hidden',  # by default symbols not visible outside DSO
 
             # in C99 declaration after statement is ok, and we explicitly compile with -std=gnu99.
             # Python >= 3.4 however adds -Werror=declaration-after-statement even for extension
@@ -69,16 +55,43 @@ _bigfile = PyGoExt('wendelin.bigfile._bigfile',
             # ensure there is no warnings / errors for decl-after-statements.
             '-Wno-declaration-after-statement',
             '-Wno-error=declaration-after-statement',
-            ],
+        ]
+    else:
+        ccdefault.append('-std=gnu++11')    # not c++11 since we use typeof
+
+    # DSOs are not yet annoated for visibility
+    # XXX pyext besides _bigfile.so also cannot do this because PyMODINIT_FUNC
+    # does not include export in it. TODO reenable for _bigfile.so
+    """
+    if what != _DSO:
+        ccdefault.append('-fvisibility=hidden')  # by default symbols not visible outside DSO
+    """
+
+    _ = kw.get('extra_compile_args', [])[:]
+    _[0:0] = ccdefault
+    kw['extra_compile_args'] = _
+
+    # XXX link default: no-undefined (only for DSO)
+    lddefault = []
+    # python extensions cannot be built with -Wl,--no-undefined: at runtime
+    # they links with either python (without libpython) or libpython. linking
+    # with both libpython and python would be wrong
+    if what == _DSO:
+        lddefault.append('-Wl,--no-undefined')  # check DSO for undefined symbols at link time
+
+    _ = kw.get('extra_link_args', [])[:]
+    _[0:0] = lddefault
+    kw['extra_link_args'] = _
 
-            # can't - at runtime links with either python (without libpython) or libpython
-            # linking with both libpython and python would be wrong
-            #extra_link_args     = [
-            #    '-Wl,--no-undefined',   # check DSO for undefined symbols at link time
-            #]
 
-            dsos = ['wendelin.bigfile.libvirtmem'],
-            )
+    return what(*argv, **kw)
+
+def PyGoExt(*argv, **kw):
+    return _with_defaults(_PyGoExt, *argv, **kw)
+
+def DSO(*argv, **kw):
+    return _with_defaults(_DSO, *argv, **kw)
+
 
 
 # build_py that
@@ -250,26 +263,18 @@ setup(
                      'lib/bug.c',
                      'lib/utils.c'],
                     define_macros       = [('_GNU_SOURCE',None), ('BUILDING_LIBVIRTMEM',None)],   # XXX dup
-                    language = 'c',
-                    extra_compile_args  = [ # XXX dup
-                        '-std=gnu99',           # declarations inside for-loop
-                        '-fplan9-extensions',   # anonymous-structs + simple inheritance
-                        # TODO reenable
-                        #'-fvisibility=hidden',  # by default symbols not visible outside DSO
-                    ],
-
-                    extra_link_args     = [
-                        '-Wl,--no-undefined',   # check DSO for undefined symbols at link time
-                    ])],
+                    language = 'c')],
 
     ext_modules = [
-                    _bigfile,
+                    PyGoExt('wendelin.bigfile._bigfile',
+                        ['bigfile/_bigfile.c'],
+                        define_macros   = [('_GNU_SOURCE',None)],
+                        language        = 'c',
+                        dsos = ['wendelin.bigfile.libvirtmem'],
+                    ),
 
                     PyGoExt('wendelin.bigfile._file_zodb',
                         ['bigfile/_file_zodb.pyx'],
-                        extra_compile_args = [
-                            '-std=gnu++11', # not c++11 since we use typeof
-                        ],
                         dsos=['wendelin.bigfile.libvirtmem']),  # XXX needed?
 
                     PyGoExt('wendelin.wcfs.internal._wcfs',
@@ -278,9 +283,6 @@ setup(
                          'wcfs/internal/wcfs_watchlink.cpp',
                          'wcfs/internal/wcfs_misc.cpp',
                         ],
-                        extra_compile_args = [
-                            '-std=gnu++11', # not c++11 since we use typeof
-                        ],
                         dsos=['wendelin.bigfile.libvirtmem']),
 
                     PyGoExt('wendelin.wcfs.internal.wcfs_test',