If you try to compile for debug multilib you get the warning below,
which means that the program will crash trying to free() anything
that's malloced since we've mixed debug and non-debug libs.
Linker Tools Warning LNK4098
defaultlib "library" conflicts with use of other libs; use /NODEFAULTLIB:library
We can solve this by adding this
/NODEFAULTLIB:msvcrt.lib
to the linker lines for all the apps dsp files for the debug setting.
For example in apps_app_wxluafreeze.dsp
!ELSEIF "$(CFG)" == "app_wxluafreeze - Win32 Debug Multilib"
# PROP BASE Use_MFC 0
# PROP BASE Use_Debug_Libraries 1
...
# ADD BASE LINK32 /NODEFAULTLIB:msvcrt.lib wxlua_msw28d_wxlua.lib ...
# ADD LINK32 /NODEFAULTLIB:msvcrt.lib wxlua_msw28d_wxlua.lib ...
I would guess that the reason why we need to do this (wxWidgets
samples do not) is that modules_mod_lua.dsp generates a non-debug
lua5.1.lib for the "debug" setting and MSVC gets confused and ignores
the fact that we've set "Use_Debug_Libraries 1" and links to the
non-debug msvcrt lib? When I change the lua5.1.lib to be debug by hand
I no longer get the 4098 warning and the program doesn't crash, so I
think my theory is correct.
!ELSEIF "$(CFG)" == "mod_lua - Win32 Debug Multilib"
# PROP BASE Use_MFC 0
# PROP BASE Use_Debug_Libraries 1 << change from 0
...
Change /MD to /MDd below
# ADD BASE CPP /nologo /FD /MDd /W1 /GR /EHsc /D "WIN32" /D "_LIB" /c
# ADD CPP /nologo /FD /MDd /W1 /GR /EHsc /D "WIN32" /D "_LIB" /c
===============
Francesco, what do you think about this and which way makes more
sense, add NODEFAULTLIB or change lua5.1.lib to be debug as well?
Regards,
John Labenski
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