Build failure on MacOS X about ui

[andlabs]

I think I know what's going on here, but to be sure: what version of Mac OS X and what version of Xcode are you using? Thanks.

[tompao]

MacOS X 10.7.5
XCode 4.1
SDKs for MacOS 10.6 and 10.7

Thanks

[andlabs]

Can't check it myself right now (on Xcode 5) but does this patch fix it?

diff --git a/objc_darwin.h b/objc_darwin.h
index 1208e0e..e2d9d92 100644
--- a/objc_darwin.h
+++ b/objc_darwin.h
@@ -26,7 +26,7 @@ extern Class NilClass;
 /* for listbox_darwin.go */
 extern id *_NSObservedObjectKey;

-inline id objc_msgSend_noargs(id obj, SEL sel)
+static inline id objc_msgSend_noargs(id obj, SEL sel)
 {
    return objc_msgSend(obj, sel);
 }
@@ -52,25 +52,25 @@ extern uintptr_t objc_msgSend_uintret_noargs(id objc, SEL sel);
 extern intptr_t objc_msgSend_intret_noargs(id obj, SEL sel);

 #define m1(name, type1) \
-   inline id objc_msgSend_ ## name (id obj, SEL sel, type1 a) \
+   static inline id objc_msgSend_ ## name (id obj, SEL sel, type1 a) \
    { \
        return objc_msgSend(obj, sel, a); \
    }

 #define m2(name, type1, type2) \
-   inline id objc_msgSend_ ## name (id obj, SEL sel, type1 a, type2 b) \
+   static inline id objc_msgSend_ ## name (id obj, SEL sel, type1 a, type2 b) \
    { \
        return objc_msgSend(obj, sel, a, b); \
    }

 #define m3(name, type1, type2, type3) \
-   inline id objc_msgSend_ ## name (id obj, SEL sel, type1 a, type2 b, type3 c) \
+   static inline id objc_msgSend_ ## name (id obj, SEL sel, type1 a, type2 b, type3 c) \
    { \
        return objc_msgSend(obj, sel, a, b, c); \
    }

 #define m4(name, type1, type2, type3, type4) \
-   inline id objc_msgSend_ ## name (id obj, SEL sel, type1 a, type2 b, type3 c, type4 d) \
+   static inline id objc_msgSend_ ## name (id obj, SEL sel, type1 a, type2 b, type3 c, type4 d) \
    { \
        return objc_msgSend(obj, sel, a, b, c, d); \
    }

[tompao]

Hi Pietro,

Thanks, the fix works and compilation goes past that point.
With go 1.2.1, linkage fails with undefined symbols, so I realized only go tip (future 1.3) is supported... doh!

My suggestion is to add a note in the documentation, this limitation was not clear.

For reference, the error with go 1.2.1 is:

Undefined symbols for architecture x86_64:
  "_NilClass", referenced from:
      __cgohack_NilClass in _cgo_main.o
     (maybe you meant: __cgohack_NilClass)
  "__NSObservedObjectKey", referenced from:
      __cgohack__NSObservedObjectKey in _cgo_main.o
     (maybe you meant: __cgohack__NSObservedObjectKey)
  "_objc_msgSend_stret_rect_noargs", referenced from:
      __cgo_778eeb4287e1_Cfunc_objc_msgSend_stret_rect_noargs in delegate_darwin.cgo2.o
     (maybe you meant: __cgo_778eeb4287e1_Cfunc_objc_msgSend_stret_rect_noargs)
  "_objc_msgSend_uintret_noargs", referenced from:
      __cgo_778eeb4287e1_Cfunc_objc_msgSend_uintret_noargs in listbox_darwin.cgo2.o
     (maybe you meant: __cgo_778eeb4287e1_Cfunc_objc_msgSend_uintret_noargs)
  "_objc_msgSend_id_uint", referenced from:
      __cgo_778eeb4287e1_Cfunc_objc_msgSend_id_uint in listbox_darwin.cgo2.o
     (maybe you meant: __cgo_778eeb4287e1_Cfunc_objc_msgSend_id_uint)
  "_NSIndexSetEntries", referenced from:
      __cgo_778eeb4287e1_Cfunc_NSIndexSetEntries in listbox_darwin.cgo2.o
     (maybe you meant: __cgo_778eeb4287e1_Cfunc_NSIndexSetEntries)
  "__objc_msgSend_rect", referenced from:
      __cgo_778eeb4287e1_Cfunc__objc_msgSend_rect in objc_darwin.cgo2.o
     (maybe you meant: __cgo_778eeb4287e1_Cfunc__objc_msgSend_rect, __cgo_778eeb4287e1_Cfunc__objc_msgSend_rect_bool , __cgo_778eeb4287e1_Cfunc__objc_msgSend_rect_uint_uint_bool )
  "__objc_msgSend_uint", referenced from:
      __cgo_778eeb4287e1_Cfunc__objc_msgSend_uint in objc_darwin.cgo2.o
     (maybe you meant: __cgo_778eeb4287e1_Cfunc__objc_msgSend_uint)
  "__objc_msgSend_rect_uint_uint_bool", referenced from:
      __cgo_778eeb4287e1_Cfunc__objc_msgSend_rect_uint_uint_bool in objc_darwin.cgo2.o
     (maybe you meant: __cgo_778eeb4287e1_Cfunc__objc_msgSend_rect_uint_uint_bool)
  "__objc_msgSend_rect_bool", referenced from:
      __cgo_778eeb4287e1_Cfunc__objc_msgSend_rect_bool in objc_darwin.cgo2.o
     (maybe you meant: __cgo_778eeb4287e1_Cfunc__objc_msgSend_rect_bool)
  "_objc_msgSend_intret_noargs", referenced from:
      __cgo_778eeb4287e1_Cfunc_objc_msgSend_intret_noargs in sysdata_darwin.cgo2.o
     (maybe you meant: __cgo_778eeb4287e1_Cfunc_objc_msgSend_intret_noargs)
  "_objc_msgSend_int", referenced from:
      __cgo_778eeb4287e1_Cfunc_objc_msgSend_int in sysdata_darwin.cgo2.o
     (maybe you meant: __cgo_778eeb4287e1_Cfunc_objc_msgSend_int, __cgo_778eeb4287e1_Cfunc_objc_msgSend_intret_noargs )
  "_objc_msgSend_id_int", referenced from:
      __cgo_778eeb4287e1_Cfunc_objc_msgSend_id_int in sysdata_darwin.cgo2.o
     (maybe you meant: __cgo_778eeb4287e1_Cfunc_objc_msgSend_id_int)
ld: symbol(s) not found for architecture x86_64
collect2: ld returned 1 exit status

[andlabs]

Fixed by 7866d3e
Also added a Go 1.3 note: ebd15cc
(I didn't specify the fixes line in the commit message properly.)
Thanks again!