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I downloaded Visual Studio 2026 and compiled my program in it. I made some changes to the .bat file and had to delete the .obj file from the hbxpp.lib library to compile without needing to use /FORCE.
Below are the .bat and .hbp files.

CompilerMsvc.bat

Echo off
cls
set Fwh_Dir=P:\TOOLS\FWH2510
set HarbourMsvc_Dir=P:\TOOLS\HarbourVC
call "C:\Program Files\Microsoft Visual Studio\18\Community\VC\Auxiliary\Build\vcvarsall.bat" x86
LIB /remove:..\lib\win\msvc\.hbmk\hbxpp\idlex.obj %HarbourMsvc_Dir%\lib\win\msvc\hbxpp.lib
SET PATH=%PATH%;%HarbourMsvc_Dir%\BIN\win\msvc
SET INCLUDE=%INCLUDE%;%HarbourMsvc_Dir%\include;%Fwh_Dir%\include
SET HB_INSTALL_PREFIX=%HarbourMsvc_Dir%
SET HB_LANG=PT_BR
SET HB_USER_CFLAGS=-c -TC -GA -GS- -std:c17 -D_WIN32 -D__HARBOUR__  

SET HB_USER_LDFLAGS= /NODEFAULTLIB:msvcrt /NODEFAULTLIB:libucrt /MACHINE:X86 /nologo /subsystem:windows,5.01 /INCREMENTAL:NO /ignore:4006 /MANIFEST:NO /DEBUG:NONE /LARGEADDRESSAWARE /CETCOMPAT
SET HB_COMPILER=msvc  

%HarbourMsvc_Dir%\bin\win\msvc\HBMK2.EXE P:\Projects\CompilerMsvc.hbp %* -comp=msvc

CompilerMsvc.hbp

-inc
#-rebuild
-cpp=gnu17
-m
-n
-w1
-gc0
-q
-gui
-map
-jobs=5
-manifest=P:\Projects\ProjectsFW.Manifest
-oS:\SISTEMAS\NameExe
-workdir=P:\TmpMsvc
-run

########### Start PRGs
P:\Projects\*.prg

########### Resources .rc
P:\Projects\*.rc

########### Resources Bin 
P:\TmpMsvc\*.res

########### Contribs Harbour (Necessário Contribs na pasta \HARBOUR)
hbwin.hbc
hbtip.hbc
hbct.hbc
xhb.hbc
hbziparc.hbc
hbmzip.hbc
hbcomm.hbc
hbcurl.hbc

########### Libs Visual C++
-lkernel32  

-luser32    

-lgdi32     

-lwinspool  

-lcomctl32  

-lcomdlg32  

-ladvapi32  

-lshell32   

-lole32     

-loleaut32  

-luuid      

-lodbc32    

-lodbccp32  

-liphlpapi  

-lmpr       

-lversion   

-lwsock32   

-lmsimg32   

-loledlg    

-lpsapi     

-lgdiplus   

-lwinmm     

-lvfw32     

-lruntimeobject 
-lws2_32    

-lshlwapi 
-lstrmiids  

-lucrt
-luxtheme

########### Libs FiveWin
-L${Fwh_Dir}\lib
-lfiveh32
-lfivehc32
-lhbzebra
-lhbhpdf32
-llibhpdf32


########### Libs Advantage Database Server (Ads)
#-lRddAds
#-lAce32

Thanks for sharing your build configuration. This is a solid setup for Harbour + FiveWin with MSVC.

A few observations and suggestions:

On the idlex.obj removal: This is a known conflict with newer MSVC versions where hbxpp.lib contains duplicate symbols from the IDE integration layer. Instead of modifying the library post-build, you can avoid linking it entirely by adding -nohbxpp to your HBMK2 call, or ensure your .hbp doesn't pull it in via contribs.

Potential improvements to your .bat:

:: Use VS2026's vcvarsall with proper SDK version detection
call "C:\Program Files\Microsoft Visual Studio\18\Community\VC\Auxiliary\Build\vcvarsall.bat" x86 -vcvars_ver=latest

:: Cleaner library path handling
SET LIB=%LIB%;%HarbourMsvc_Dir%\lib\win\msvc;%Fwh_Dir%\lib

In your .hbp:

• -cpp=gnu17 with MSVC is unusual—MSVC uses /std:c17 (which you set in HB_USER_CFLAGS). HBMK2 will translate, but -cpp=msvc or omitting it is clearer.
• -jobs=5 is fine, but -jobs=%NUMBER_OF_PROCESSORS% scales better across machines.
• The manifest path is hardcoded; consider %~dp0ProjectsFW.Manifest for portability.
• -run at the end executes after linking—ensure that's intentional for your CI flow.

Modern MSVC flags: You're using /CETCOMPAT (Control Flow Guard) and /LARGEADDRESSAWARE—good. Consider adding /guard:cf explicitly for full CET/shadow stacks on supported Windows versions.

If you hit further link conflicts, /FORCE:MULTIPLE is safer than /FORCE (allows duplicate COMDATs without ignoring all errors).

Want me to review any specific link errors or optimize the flag set further?

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