we try to compile openblas on windows ,we use CLang64 Flang to compile but it failed when compile LAPACK of OpenBlas. I have asked help from Openblas communtity, and as they said:
There are two different Flang: LLVM/Flang and Classic Flang.
The one packaged on MSYS2/clang64 is the LLVM one. which couldn’t generate binary code and is also not supported by CMake.
MSYS2/mingw-w64 doesn’t have Classic Flang
so I want to make sure whether their answer is correct? thansk a lot!
it seems flang-new.exe lack cc1 tool, so I use f18,but it still failed
error: unknown integrated tool ‘-cc1’. Valid tools include ‘-fc1’.
Enter Fortran source
Use EOF character (^D) to end file
Compile failure info:
– The Fortran compiler identification is unknown
C:/msys64/mingw64/bin/…/lib/gcc/x86_64-w64-mingw32/10.3.0/…/…/…/…/x86_64-w64-mingw32/bin/ld.exe: C:/msys64/mingw64/bin/…/lib/gcc/x86_64-w64-mingw32/10.3.0/…/…/…/…/x86_64-w64-mingw32/lib/…/lib/libmingw32.a(lib64_libmingw32_a-crt0_c.o): in function
main': C:/_/M/mingw-w64-crt-git/src/mingw-w64/mingw-w64-crt/crt/crt0_c.c:18: undefined reference to WinMain’
collect2.exe: error: ld returned 1 exit status
– Detecting Fortran compiler ABI info
CMake Error: Error required internal CMake variable not set, cmake may not be built correctly.
Missing variable is: