Link problems

Dear MinGW

On 29/05/2020 I updated my MinGW package on my Desktop PC using the MinGW
installer.
To check the new arrangement I attempted to compile several programs that
had  previously compiled and run successfully.
Graphics programs running under plplot and numerical programs using
Numerical Recipes all failed with a common set of
linking error messages. An example is shown below.

Can you advise me on these errors? Am I missing something? It runs with no
errors on my un-updated laptop.
I notice that there reference to:
 /home/keith/builds/mingw/gcc-9.2.0-mingw32-cross-native/mingw32/libgcc/./
gthr-default.h:639: ......



C:\Pete\PlPXmpl>c:\Windows\System32\cmd.exe
Microsoft Windows [Version 10.0.18363.836]
(c) 2019 Microsoft Corporation. All rights reserved.

C:\Pete\PlPXmpl>x03.bat

gcc -c -I C:\plplot32\include\plplot x03.c
gcc -o x03.exe x03.o C:\plplot32\lib\libcsirocsa.a  C:\plplot32\lib\
libplplot.a C:\plplot32\lib\libqsastime.a -mconsole -mwindows -lm


c:/mingw/bin/../lib/gcc/mingw32/9.2.0/../../../../mingw32/bin/ld.exe: c:/
mingw/bin/../lib/gcc/mingw32/9.2.0/../../../libmingw32.a(mbrscan.o):(.text+0xb6):
undefined reference to `SetLastError@4'
c:/mingw/bin/../lib/gcc/mingw32/9.2.0/../../../../mingw32/bin/ld.exe: c:/
mingw/bin/../lib/gcc/mingw32/9.2.0/../../../libmingw32.a(wcharmap.o):(.text+0x208):
undefined reference to `WideCharToMultiByte@32'
c:/mingw/bin/../lib/gcc/mingw32/9.2.0/../../../../mingw32/bin/ld.exe: c:/
mingw/bin/../lib/gcc/mingw32/9.2.0/../../../libmingwex.a(codeset.o):(.text+0xbe):
undefined reference to `GetCPInfo@8'
c:/mingw/bin/../lib/gcc/mingw32/9.2.0/../../../../mingw32/bin/ld.exe: c:/
mingw/bin/../lib/gcc/mingw32/9.2.0/../../../libmingwex.a(codeset.o):(.text+0x143):
undefined reference to `GetCPInfo@8'
c:/mingw/bin/../lib/gcc/mingw32/9.2.0/../../../../mingw32/bin/ld.exe: c:/
mingw/bin/../lib/gcc/mingw32/9.2.0/libgcc_eh.a(emutls.o): in function `_
gthread_mutex_init_function':
/home/keith/builds/mingw/gcc-9.2.0-mingw32-cross-native/mingw32/libgcc/./
gthr-default.h:639: undefined reference to `CreateSemaphoreW@16'
c:/mingw/bin/../lib/gcc/mingw32/9.2.0/../../../../mingw32/bin/ld.exe: c:/
mingw/bin/../lib/gcc/mingw32/9.2.0/libgcc_eh.a(emutls.o): in function `_
gthread_key_create':
/home/keith/builds/mingw/gcc-9.2.0-mingw32-cross-native/mingw32/libgcc/./
gthr-default.h:590: undefined reference to `TlsAlloc@0'
c:/mingw/bin/../lib/gcc/mingw32/9.2.0/../../../../mingw32/bin/ld.exe: /home/
keith/builds/mingw/gcc-9.2.0-mingw32-cross-native/mingw32/libgcc/./gthr-default.h:597:
undefined reference to `__mingwthr_key_dtor'
c:/mingw/bin/../lib/gcc/mingw32/9.2.0/../../../../mingw32/bin/ld.exe: c:/
mingw/bin/../lib/gcc/mingw32/9.2.0/libgcc_eh.a(emutls.o): in function `_
gthread_getspecific':
/home/keith/builds/mingw/gcc-9.2.0-mingw32-cross-native/mingw32/libgcc/./
gthr-default.h:621: undefined reference to `SetLastError@4'
c:/mingw/bin/../lib/gcc/mingw32/9.2.0/../../../../mingw32/bin/ld.exe: c:/
mingw/bin/../lib/gcc/mingw32/9.2.0/libgcc_eh.a(emutls.o): in function `_
gthread_mutex_lock':
/home/keith/builds/mingw/gcc-9.2.0-mingw32-cross-native/mingw32/libgcc/./
gthr-default.h:655: undefined reference to `InterlockedIncrement@4'
c:/mingw/bin/../lib/gcc/mingw32/9.2.0/../../../../mingw32/bin/ld.exe: c:/
mingw/bin/../lib/gcc/mingw32/9.2.0/libgcc_eh.a(emutls.o): in function `_
gthread_mutex_unlock':
/home/keith/builds/mingw/gcc-9.2.0-mingw32-cross-native/mingw32/libgcc/./
gthr-default.h:689: undefined reference to `InterlockedDecrement@4'
c:/mingw/bin/../lib/gcc/mingw32/9.2.0/../../../../mingw32/bin/ld.exe: /home/
keith/builds/mingw/gcc-9.2.0-mingw32-cross-native/mingw32/libgcc/./gthr-default.h:690:
undefined reference to `ReleaseSemaphore@12'
c:/mingw/bin/../lib/gcc/mingw32/9.2.0/../../../../mingw32/bin/ld.exe: c:/
mingw/bin/../lib/gcc/mingw32/9.2.0/libgcc_eh.a(emutls.o): in function `_
gthread_setspecific':
/home/keith/builds/mingw/gcc-9.2.0-mingw32-cross-native/mingw32/libgcc/./
gthr-default.h:629: undefined reference to `TlsSetValue@8'
c:/mingw/bin/../lib/gcc/mingw32/9.2.0/../../../../mingw32/bin/ld.exe: c:/
mingw/bin/../lib/gcc/mingw32/9.2.0/libgcc_eh.a(emutls.o): in function `_
gthread_once':
/home/keith/builds/mingw/gcc-9.2.0-mingw32-cross-native/mingw32/libgcc/./
gthr-default.h:562: undefined reference to `InterlockedIncrement@4'
c:/mingw/bin/../lib/gcc/mingw32/9.2.0/../../../../mingw32/bin/ld.exe: c:/
mingw/bin/../lib/gcc/mingw32/9.2.0/libgcc_eh.a(emutls.o): in function `_
gthread_mutex_lock':
/home/keith/builds/mingw/gcc-9.2.0-mingw32-cross-native/mingw32/libgcc/./
gthr-default.h:656: undefined reference to `WaitForSingleObject@8'
c:/mingw/bin/../lib/gcc/mingw32/9.2.0/../../../../mingw32/bin/ld.exe: /home/
keith/builds/mingw/gcc-9.2.0-mingw32-cross-native/mingw32/libgcc/./gthr-default.h:662:
undefined reference to `InterlockedDecrement@4'
collect2.exe: error: ld returned 1 exit status


Peter Williams

-- 
Peter Williams
[email protected]

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