* Unresolved external symbol __imp_pthread_mutex_unlock
@ 2018-11-08 21:54 Josh Henrie
2018-11-08 22:15 ` Josh Henrie
2018-11-09 8:20 ` John Emmas
0 siblings, 2 replies; 3+ messages in thread
From: Josh Henrie @ 2018-11-08 21:54 UTC (permalink / raw)
To: pthreads-win32
I have compiled pthreads-win32 as a static library using VS 2008 with the
following preprocessor definitions:
_DEBUG
_WIN32_WCE=0x600
UNDER_CE
WINCE
DEBUG
_LIB
ARM
_ARM_
_UNICODE
UNICODE
HAVE_CONFIG_H
NEED_PROCESS_AFFINITY_MASK
NEED_ERRNO
__PTW32_RC_MSC
__PTW32_ARCHARM
__PTW32_STATIC_LIB
However, when I try to link it with my project I get the following linker
errors:
error LNK2001: unresolved external symbol __imp_pthread_mutex_unlock
error LNK2001: unresolved external symbol __imp_pthread_mutex_lock
error LNK2001: unresolved external symbol __imp_pthread_self
error LNK2001: unresolved external symbol __imp_pthread_cond_signal
error LNK2001: unresolved external symbol __imp_pthread_join
error LNK2001: unresolved external symbol __imp_pthread_create
error LNK2001: unresolved external symbol __imp_pthread_equal
error LNK2019: unresolved external symbol __imp_pthread_cond_timedwait
error LNK2019: unresolved external symbol __imp_pthread_cond_broadcast
When I use `dumpbin /symbols` on the static library I see the following
symbols:
4BE 00005CC0 SECT8 notype () External | pthread_mutex_unlock
44D 000050B4 SECT8 notype () External | pthread_mutex_lock
399 00004428 SECT8 notype () External | pthread_self
2E6 0000359C SECT8 notype () External | pthread_cond_signal
83D 0000A110 SECT8 notype () External | pthread_join
332 00003D50 SECT8 notype () External | pthread_create
377 0000423C SECT8 notype () External | pthread_equal
32B 00003D00 SECT8 notype () External | pthread_cond_timedwait
302 000038C0 SECT8 notype () External | pthread_cond_broadcast
Why is the linker trying to resolve the functions with the prefix `__imp_`?
What do I need to do to resolve the symbols?
^ permalink raw reply [flat|nested] 3+ messages in thread
* Re: Unresolved external symbol __imp_pthread_mutex_unlock
2018-11-08 21:54 Unresolved external symbol __imp_pthread_mutex_unlock Josh Henrie
@ 2018-11-08 22:15 ` Josh Henrie
2018-11-09 8:20 ` John Emmas
1 sibling, 0 replies; 3+ messages in thread
From: Josh Henrie @ 2018-11-08 22:15 UTC (permalink / raw)
To: pthreads-win32
I should also state that I do have the full name and path of my
pthreads-win32 static library as an additional linker dependency within my
project.
https://sourceware.org/ml/pthreads-win32/2013/msg00015.html
^ permalink raw reply [flat|nested] 3+ messages in thread
* Re: Unresolved external symbol __imp_pthread_mutex_unlock
2018-11-08 21:54 Unresolved external symbol __imp_pthread_mutex_unlock Josh Henrie
2018-11-08 22:15 ` Josh Henrie
@ 2018-11-09 8:20 ` John Emmas
1 sibling, 0 replies; 3+ messages in thread
From: John Emmas @ 2018-11-09 8:20 UTC (permalink / raw)
To: pthreads-win32
On 08/11/2018 21:53, Josh Henrie wrote:
> Why is the linker trying to resolve the functions with the prefix `__imp_`?
> What do I need to do to resolve the symbols?
>
The prefix '__imp_' signifies that your main project (i.e. not the
pthreads_win32 project) is expecting to import those symbols from a DLL
(but it found a static link lib, rather than the DLL link lib that it
was expecting). Basically, there's a mismatch between your main project
and pthreads_win32. Most likely, your main project also needs to
#define PTW32_STATIC_LIB (so that BOTH projects expect a static lib).
Hope that helps,
John
^ permalink raw reply [flat|nested] 3+ messages in thread
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2018-11-08 21:54 Unresolved external symbol __imp_pthread_mutex_unlock Josh Henrie
2018-11-08 22:15 ` Josh Henrie
2018-11-09 8:20 ` John Emmas
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