Flang Linker issues on Windows : unrecognized option '/lflang'; ignored

[harishch4]

When trying to compile a simple hello world fortran program causes below error:

warning: overriding the module target triple with x86_64-pc-windows-msvc19.29.30151 [-Woverride-module]
1 warning generated.
Microsoft (R) Incremental Linker Version 14.29.30151.0
Copyright (C) Microsoft Corporation. All rights reserved.

LINK : warning LNK4044: unrecognized option '/lflang'; ignored
LINK : warning LNK4044: unrecognized option '/lflangrti'; ignored
LINK : warning LNK4044: unrecognized option '/lpgmath'; ignored
LINK : warning LNK4044: unrecognized option '/lpthread'; ignored
LINK : warning LNK4044: unrecognized option '/lrt'; ignored
test-ae5ad6.o : error LNK2019: unresolved external symbol fort_init referenced in function MAIN_
test-ae5ad6.o : error LNK2019: unresolved external symbol f90io_src_info03a referenced in function MAIN_
test-ae5ad6.o : error LNK2019: unresolved external symbol f90io_print_init referenced in function MAIN_
test-ae5ad6.o : error LNK2019: unresolved external symbol f90io_sc_ch_ldw referenced in function MAIN_
test-ae5ad6.o : error LNK2019: unresolved external symbol f90io_ldw_end referenced in function MAIN_
LINK : error LNK2001: unresolved external symbol mainCRTStartup
a.exe : fatal error LNK1120: 6 unresolved externals
flang: error: linker command failed with exit code 1120 (use -v to see invocation)

Branch : release_15x.
linker command :

"C:\\Program Files (x86)\\Microsoft Visual Studio\\2019\\Professional\\VC\\Tools\\MSVC\\14.29.30133\\bin\\Hostx64\\x64\\link.exe" -out:a.exe "-libpath:C:\\Users\\test\\flang-compiler\\classic-flang-llvm-project\\build\\lib" -lflang -lflangrti -lpgmath -lpthread -lrt /subsystem:console -nologo "C:\\Users\\AMD\\AppData\\Local\\Temp\\test-7b4961.o"

Does classical-flang have full support on windows?

[bryanpkc]

@kaadam FYI