Re: Question

[David Chisnall]

You seem to be trying to compile Objective-C with something that is not an 
Objective-C compiler.

Try:

$ mkdir Build
$ cd Build
$ cmake .. -DCMAKE_C_COMPILER=clang -DCMAKE_CXX_COMPILER=clang++
$ make
$ make install

You may wish to run ccmake . after the cmake step to tweak any options (e.g. 
install locations).

David

On 6 Mar 2013, at 12:06, Laurent Michel <address@hidden> wrote:

> Hi David....
> 
> Found a git repo and cloned it.  But the build fails.
> 
> Tried 
> 
> cmake .
> make
> 
> Also tried
> 
> mkdir Build
> cd Build
> cmake ..
> make
> 
> And tried
> 
> cmake .
> make CC=clang CXX=clang++
> 
> All end in the same way:
> 
> (With the tarball version, all I did was make -f Makefile)
> 
> /usr/local/src/gnustep-libobjc2/objc/message.h:44:6: note: 
> 'objc_msgSend_stret' is a builtin with type 'id (id, SEL, ...)'
> 1 warning generated.
> [ 26%] Building C object CMakeFiles/objc.dir/protocol.c.o
> [ 28%] Building C object CMakeFiles/objc.dir/runtime.c.o
> [ 29%] Building C object CMakeFiles/objc.dir/sarray2.c.o
> [ 31%] Building C object CMakeFiles/objc.dir/selector_table.c.o
> [ 32%] Building C object CMakeFiles/objc.dir/sendmsg2.c.o
> [ 34%] Building C object CMakeFiles/objc.dir/statics_loader.c.o
> [ 35%] Building C object CMakeFiles/objc.dir/toydispatch.c.o
> [ 37%] Building ASM object CMakeFiles/objc.dir/block_trampolines.S.o
> [ 39%] Building ASM object CMakeFiles/objc.dir/objc_msgSend.S.o
> [ 40%] Building C object CMakeFiles/objc.dir/NSBlocks.m.o
> gcc: error trying to exec 'cc1obj': execvp: No such file or directory
> make[2]: *** [CMakeFiles/objc.dir/NSBlocks.m.o] Error 1
> make[1]: *** [CMakeFiles/objc.dir/all] Error 2
> make: *** [all] Error 2
> 
> 
> This is where I cloned from:
> 
> address@hidden:/usr/local/src/gnustep-libobjc2# cat .git/config 
> [core]
>       repositoryformatversion = 0
>       filemode = true
>       bare = false
>       logallrefupdates = true
> [remote "origin"]
>       fetch = +refs/heads/*:refs/remotes/origin/*
>       url = git://github.com/gnustep/gnustep-libobjc2.git
> [branch "master"]
>       remote = origin
>       merge = refs/heads/master
> 
> 
> Wrong place ? 
> 
> 
> --
>  Laurent
> 
> On Mar 6, 2013, at 4:10 AM, David Chisnall <address@hidden> wrote:
> 
>> Hi Laurent,
>> 
>> This doesn't look like the code from trunk.  Are you using an old release?  
>> As I said, I think this bug is fixed some months ago.
>> 
>> David
>> 
>> On 6 Mar 2013, at 01:12, Laurent Michel <address@hidden> wrote:
>> 
>>> David,
>>> 
>>> I recompiled and here is the trace:
>>> 
>>> Program received signal SIGSEGV, Segmentation fault.
>>> 0xb7a55695 in isEmptyProtocol (aProto=0xb7736f90) at protocol.c:62
>>> 62                  isEmpty &= (p2->properties->count == 0);
>>> (gdb) where
>>> #0  0xb7a55695 in isEmptyProtocol (aProto=0xb7736f90) at protocol.c:62
>>> #1  0xb7a5553e in unique_protocol (aProto=0xb7736f90) at protocol.c:118
>>> #2  0xb7a534eb in init_protocols (protocols=0xb7736fb0) at protocol.c:189
>>> #3  0xb7a534da in init_protocols (protocols=0xb773a0c0) at protocol.c:186
>>> #4  0xb7a5328a in objc_init_protocols (protocols=0xb773a0c0) at 
>>> protocol.c:196
>>> #5  0xb7a48264 in load_category (cat=0xb773a2c0, class=0xb7a64340) at 
>>> category_loader.c:38
>>> #6  0xb7a47f02 in try_load_category (cat=0xb773a2c0) at category_loader.c:50
>>> #7  0xb7a47e6a in objc_try_load_category (cat=0xb773a2c0) at 
>>> category_loader.c:63
>>> #8  0xb7a5143f in __objc_exec_class (module=0xb773a398) at loader.c:89
>>> #9  0xb76c55a4 in .objc_load_function () from 
>>> /home/ldm/work/platform/Clo/queens2/../ORFoundation/libORFoundation.so
>>> #10 0xb7fece9b in ?? () from /lib/ld-linux.so.2
>>> #11 0xb7fecf84 in ?? () from /lib/ld-linux.so.2
>>> #12 0xb7fdf20f in ?? () from /lib/ld-linux.so.2
>>> 
>>> 
>>> So line 62. 
>>> 
>>> It won't show the variables though:
>>> 
>>> (gdb) p *p2
>>> $3 = {
>>> isa = 0xb7a642f0, 
>>> name = 0xb771df54 "ORExpr", 
>>> protocol_list = 0xb7795a18, 
>>> instance_methods = 0xb7795a20, 
>>> class_methods = 0xb7795a20, 
>>> optional_instance_methods = 0xb7795a20, 
>>> optional_class_methods = 0xb7795a20, 
>>> properties = 0x0, 
>>> optional_properties = 0x0
>>> }
>>> (gdb) l
>>> 57          if (aProto->isa == ObjC2ProtocolClass)
>>> 58          {
>>> 59                  struct objc_protocol2 *p2 = (struct 
>>> objc_protocol2*)aProto;
>>> 60                  isEmpty &= (p2->optional_instance_methods->count == 0);
>>> 61                  isEmpty &= (p2->optional_class_methods->count == 0);
>>> 62                  isEmpty &= (p2->properties->count == 0);
>>> 63                  isEmpty &= (p2->optional_properties->count == 0);
>>> 64          }
>>> 65          return isEmpty;
>>> 66  }
>>> 
>>> So p2->properties is NULL and trying to access the count attribute crashes. 
>>> This is happening on a protocol
>>> of mine (ORExpr) which inherits from other protocols:
>>> 
>>> @protocol ORExpr <ORConstraint,NSObject,NSCoding>
>>> -(id<ORTracker>) tracker;
>>> -(ORInt) min;
>>> -(ORInt) max;
>>> -(BOOL) isConstant;
>>> -(BOOL) isVariable;
>>> 
>>> ....
>>> 
>>> @end
>>> 
>>> Any ideas?
>>> 
>>> 
>>> On Mar 5, 2013, at 7:20 AM, Laurent Michel <address@hidden> wrote:
>>> 
>>>> 
>>>> On Mar 5, 2013, at 4:10 AM, David Chisnall <address@hidden> wrote:
>>>> 
>>>>> Hi,
>>>>> 
>>>>> How old is your runtime?  Without debugging symbols, this looks like it 
>>>>> might be a bug that was fixed in May last year.  It would really help if 
>>>>> you could do a debug build of the runtime and let me know exactly what is 
>>>>> failing.  If you do ccmake . in your libobjc2 build directory, and change 
>>>>> the build type to Debug, you should get the symbols.
>>>> 
>>>> libobjc2 was 1.6.1
>>>> 
>>>> 
>>>> address@hidden:/usr/local/src/old$ sha1sum libobjc2-1.6.tar.gz 
>>>> 348ab64899b25ecb2bfdfd13ebeeab2d6a2c8988  libobjc2-1.6.tar.gz
>>>> 
>>>> 
>>>> total 9196
>>>> drwxr-xr-x 4 root root     4096 Mar  4 08:37 GNUstep
>>>> lrwxrwxrwx 1 root root       23 Mar  4 08:37 libgnustep-base.so -> 
>>>> libgnustep-base.so.1.24
>>>> lrwxrwxrwx 1 root root       25 Mar  4 08:37 libgnustep-base.so.1.24 -> 
>>>> libgnustep-base.so.1.24.3
>>>> -rwxr-xr-x 1 root root  9105637 Mar  4 08:36 libgnustep-base.so.1.24.3
>>>> -r--r--r-- 1 root root   136452 May 18  2012 libobjc.a
>>>> lrwxrwxrwx 1 root root       31 May 18  2012 libobjc.so -> 
>>>> /usr/local/lib/libobjc.so.4.6.0
>>>> lrwxrwxrwx 1 root root       31 May 18  2012 libobjc.so.4 -> 
>>>> /usr/local/lib/libobjc.so.4.6.0
>>>> lrwxrwxrwx 1 root root       31 May 18  2012 libobjc.so.4.6 -> 
>>>> /usr/local/lib/libobjc.so.4.6.0
>>>> -r--r--r-- 1 root root   140820 May 18  2012 libobjc.so.4.6.0
>>>> lrwxrwxrwx 1 root root       33 May 18  2012 libobjcxx.so -> 
>>>> /usr/local/lib/libobjcxx.so.4.6.0
>>>> lrwxrwxrwx 1 root root       33 May 18  2012 libobjcxx.so.4 -> 
>>>> /usr/local/lib/libobjcxx.so.4.6.0
>>>> lrwxrwxrwx 1 root root       33 May 18  2012 libobjcxx.so.4.6 -> 
>>>> /usr/local/lib/libobjcxx.so.4.6.0
>>>> -r--r--r-- 1 root root    13002 May 18  2012 libobjcxx.so.4.6.0
>>>> drwxrwsr-x 4 root staff    4096 Mar  3 13:33 python2.7
>>>> address@hidden:/usr/local/lib$ 
>>>> 
>>>> I was looking yesterday night for a more recent tar ball, but couldn't 
>>>> locate one. 
>>>> 
>>>> I'll recompile libobjc2 in debug and will update you. Thanks for the info 
>>>> David!
>>>> 
>>>> --
>>>> Laurent
>>>> 
>>>> 
>>>>> 
>>>>> David
>>>>> 
>>>>> On 5 Mar 2013, at 01:37, Laurent Michel <address@hidden> wrote:
>>>>> 
>>>>>> PS/ I decided to recompile GNUstep simply because I was experiencing a 
>>>>>> crash with my compiled binary during the 
>>>>>> library initializations of GNUstep/libobjc. Namely, here is the 
>>>>>> backtrace:
>>>>>> 
>>>>>> [Thread debugging using libthread_db enabled]
>>>>>> Using host libthread_db library "/lib/i386-linux-gnu/libthread_db.so.1".
>>>>>> [New Thread 0xb7021b40 (LWP 8378)]
>>>>>> 
>>>>>> Program received signal SIGSEGV, Segmentation fault.
>>>>>> 0xb7a58d50 in init_protocols () from /usr/local/lib/libobjc.so
>>>>>> (gdb) where
>>>>>> #0  0xb7a58d50 in init_protocols () from /usr/local/lib/libobjc.so
>>>>>> #1  0xb7a58c47 in init_protocols () from /usr/local/lib/libobjc.so
>>>>>> #2  0xb7a588c1 in objc_init_protocols () from /usr/local/lib/libobjc.so
>>>>>> #3  0xb7a517e3 in objc_try_load_category () from 
>>>>>> /usr/local/lib/libobjc.so
>>>>>> #4  0xb7a57251 in __objc_exec_class () from /usr/local/lib/libobjc.so
>>>>>> #5  0xb76d15d4 in .objc_load_function () from 
>>>>>> /home/ldm/work/platform/Clo/queens2/../ORFoundation/libORFoundation.so
>>>>>> #6  0xb7fece9b in ?? () from /lib/ld-linux.so.2
>>>>>> #7  0xb7fecf84 in ?? () from /lib/ld-linux.so.2
>>>>>> #8  0xb7fdf20f in ?? () from /lib/ld-linux.so.2
>>>>>> (gdb) quit
>>>>>> A debugging session is active.
>>>>> 
>>>>> --
>>>>> This email complies with ISO 3103
>>>>> 
>>>>> 
>>>>> _______________________________________________
>>>>> Gnustep-dev mailing list
>>>>> address@hidden
>>>>> https://lists.gnu.org/mailman/listinfo/gnustep-dev
>>>> 
>>> 
>>> 
>>> _______________________________________________
>>> Gnustep-dev mailing list
>>> address@hidden
>>> https://lists.gnu.org/mailman/listinfo/gnustep-dev
>> 
>> 
>> 
>> 
>> -- Sent from my Difference Engine
>> 
>> 
>> 
> 
> 
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