Re: [MinGW-dvlpr] GCC's default link order

[Kai T. <kti...@go...>]

2012/1/9 Earnie Boyd <ea...@us...>:
> On Mon, Jan 9, 2012 at 8:57 AM, Chris Sutcliffe <ir0...@gm...> wrote:
>> On 2 January 2012 10:00, Chris Sutcliffe wrote:
>>> I've been working with Yongwei Wu to incorporate a patch the includes
>>> MBCS support into putc / putchar (as apparently the MS implementation
>>> is broken).  To that end, Yongwei added new implementations of putc /
>>> putchar into mingwex.  The issue I've run in to is that with the
>>> latest GCC (and possibly older releases as well), the default link
>>> order picks up the mingwex implementation of putc / putchar first,
>>> before the the msvcrt implementation which causes issues (link
>>> failures) for the 'general' case (where the user wants to use the MS
>>> supplied putc / putchar):
>>>
>>> -lmingw32 -lgcc_eh -lgcc -lmoldname -lmingwex -lmsvcrt -ladvapi32
>>> -lshell32 -luser32 -lkernel32 -lmingw32 -lgcc_eh -lgcc -lmoldname
>>> -lmingwex -lmsvcrt c:/mingw/bin/../lib/gcc/mingw32/4.6.2/crtend.o
>>>
>>> Shouldn't -lmingwex be after -lmsvcrt?  Yongwei also raises a good
>>> point, in that -lkernel32 should probably be added to the end of the
>>> default link list as well:
>>>
>>> The reason why the new putc makes libgcc_eh use additional functions
>>> from kernel32 is that I used static __thread variables. By default,
>>> libgcc_eh is linked before libmingwex, then libkernel32 satisfies the
>>> initial link need of libgcc_eh; libgcc_eh appears again to provide the
>>> additional needed functions for using __thread in libmingex, but no
>>> libkernel32 again to provide the missing functions.
>>>
>>> Putting kernel32 at the end of auto-linked libraries solves such
>>> issues and is very reliable: import libraries do not introduce more
>>> dependencies (while libraries like libgcc_eh and libmingwex do).
>>>
>>> Thoughts?
>>
>> Ping?
>>
>
> If Cesar doesn't have a comment, you might want to ping Kai about it.
> IIRC he is no longer a member of this list.
>
> --
> Earnie

I am still monitoring this list, but rarely reply.  To change order of
libmsvcrt and libmingwex would be a flaw, as libmingwex uses functions
from libmsvcrt.  Therefore the order has not to be changed for gcc.
If you want to get msvcrt's symbols before mingwex, then add -lmsvcrt
as user-option.

Regards,
Kai