mmuetzel added a comment.
I checked out the LLVM repository from https://github.com/llvm/llvm-project.git
and applied your patch with `patch -Np0 -i D126291.433988.patch`.
After some failing attempts, I finally found a configuration for which building
succeeded. I struggled with duplicate symbols and two many symbols when linking
some libraries.
I ended up using these switches:
cmake \
-Sllvm \
-Bbuild \
-GNinja \
-DCMAKE_INSTALL_PREFIX=pkg \
-DCMAKE_C_COMPILER=clang \
-DCMAKE_CXX_COMPILER=clang++ \
-DCMAKE_C_COMPILER_LAUNCHER=ccache \
-DCMAKE_CXX_COMPILER_LAUNCHER=ccache \
-DLLVM_ENABLE_PROJECTS="clang;mlir;flang;llvm" \
-DLLVM_TARGETS_TO_BUILD="X86" \
-DCMAKE_BUILD_TYPE=Release \
-DLLVM_ENABLE_LIBCXX=ON \
-DCLANG_DEFAULT_RTLIB=compiler-rt \
-DCLANG_DEFAULT_UNWINDLIB=libunwind \
-DCLANG_DEFAULT_LINKER=lld \
-DLLVM_BUILD_LLVM_DYLIB=OFF \
-DLLVM_BUILD_STATIC=OFF \
-DLLVM_ENABLE_ASSERTIONS=OFF \
-DLLVM_ENABLE_FFI=ON \
-DLLVM_ENABLE_THREADS=ON \
-DLLVM_INCLUDE_EXAMPLES=OFF \
-DLLVM_INSTALL_UTILS=ON
I hope those make sense.
With those, `flang-new` was built in a CLANG64 build environment of MSYS2.
After installation, I got:
$ PATH=./pkg/bin:$PATH flang-new --version
flang-new version 15.0.0
Target: x86_64-w64-windows-gnu
Thread model: posix
InstalledDir: D:/llvm-project/pkg/bin
However, when trying to build a simple "Hello World" program with it, I got:
$ PATH=./pkg/bin:$PATH flang-new hello.f90 -L/clang64/lib
ld.lld: error: could not open
'D:/llvm-project/pkg/lib/clang/15.0.0/lib/windows/libclang_rt.builtins-x86_64.a':
No such file or directory
ld.lld: error: could not open
'D:/llvm-project/pkg/lib/clang/15.0.0/lib/windows/libclang_rt.builtins-x86_64.a':
No such file or directory
flang-new: error: linker command failed with exit code 1 (use -v to see
invocation)
Those files don't exist indeed.
Is that expected? Did I do something wrong? Incorrect configuration? Do I also
need to enable `compiler-rt`?
CHANGES SINCE LAST ACTION
https://reviews.llvm.org/D126291/new/
https://reviews.llvm.org/D126291
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