Experimental Physics and
Industrial Control System

epicsTime.obj:epicsTime.cpp:(.text+0xcc2): undefined reference to `_mkgmtime32'

Hi Evan,

 

These functions are part of the “dbghelp” library that looks to be missing from your link line. I suspect that this library is needed in this case because it is a static build, for a shared (DLL) build it would have been linked into COM I expect. If you edit

 

    modules/libcom/test/Makefile

 

and change the PROD_SYS_LIBS_WIN32 line to be

 

PROD_SYS_LIBS_WIN32 += ws2_32 advapi32 user32 dbghelp    

 

Does that help?

 

Freddie

 

 

From: Tech-talk <tech-talk-bounces at aps.anl.gov> On Behalf Of Daykin, Evan via Tech-talk
Sent: 24 March 2022 18:55
To: EPICS tech-talk <tech-talk at aps.anl.gov>
Subject: cross-compiling Base 7.0.6 for win32

 

Hi Tech Talk,

 

I am attempting to build Base version 7.0.6, with “CROSS_COMPILER_TARGET_ARCHS=linux-x86_64-debug win32-x86-mingw” on Debian 11, kernel version 5.10.0-8-amd64. I am getting the following error:

 

/usr/bin/i686-w64-mingw32-g++ -o epicsTypesTest.exe -static -L/user/daykin/git/epics-base/lib/win32-x86-mingw       -m32   -static-libgcc -static-libstdc++         epicsTypesTest.o    -lCom  -lws2_32 -ladvapi32 -luser32    -lws2_32

/usr/bin/i686-w64-mingw32-ld: /user/daykin/git/epics-base/lib/win32-x86-mingw/Com.lib(osdFindAddr.o):osdFindAddr.c:(.text+0x7b): undefined reference to `_imp__SymFromAddr@20'

/usr/bin/i686-w64-mingw32-ld: /user/daykin/git/epics-base/lib/win32-x86-mingw/Com.lib(osdFindAddr.o):osdFindAddr.c:(.text+0xf1): undefined reference to `_imp__SymSetOptions@4'

/usr/bin/i686-w64-mingw32-ld: /user/daykin/git/epics-base/lib/win32-x86-mingw/Com.lib(osdFindAddr.o):osdFindAddr.c:(.text+0x118): undefined reference to `_imp__SymInitialize@12'

/usr/bin/i686-w64-mingw32-ld: /user/daykin/git/epics-base/lib/win32-x86-mingw/Com.lib(osdFindAddr.o):osdFindAddr.c:(.text+0x1bd): undefined reference to `_imp__SymGetLineFromAddr64@20'

collect2: error: ld returned 1 exit status

 

I suppose this has something to do with the win32 API, but I’m not sure what I’m doing wrong; I have every gcc-mingw* package installed.  Has anyone experienced this before?

 

Evan Daykin Controls Engineer Facility for Rare Isotope Beams Michigan State University 640 South Shaw Lane East Lansing, MI 48824, USA Tel. 517-908-7678 Email: daykin at frib.msu.edu

 

 

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References:

cross-compiling Base 7.0.6 for win32 Daykin, Evan via Tech-talk

RE: cross-compiling Base 7.0.6 for win32 Freddie Akeroyd - STFC UKRI via Tech-talk

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