9ec748cfb1
The clang/flang driver has two separate systems for find the location of clang_rt (simplified): * `getCompilerRTPath()`, e.g. `../lib/clang/22/lib/windows`, used when `LLVM_ENABLE_PER_TARGET_RUNTIME_DIR=0` * `getRuntimePath()`, e.g. `../lib/clang/22/lib/x86_64-pc-windows-msvc`, used when `LLVM_ENABLE_PER_TARGET_RUNTIME_DIR=1` To simplify the search path, Flang-RT normally assumes only `getRuntimePath()`, i.e. ignoring `LLVM_ENABLE_PER_TARGET_RUNTIME_DIR` and always using the `LLVM_ENABLE_PER_TARGET_RUNTIME_DIR=1` mechanism. There is an exception for Apple Darwin triples where `getRuntimePath()` returns nothing. The flang-rt/compiler-rt CMake code for library location also ignores `LLVM_ENABLE_PER_TARGET_RUNTIME_DIR` but uses the `LLVM_ENABLE_PER_TARGET_RUNTIME_DIR=0` path instead. Since only `getRuntimePath()` is automatically added to the linker command line, this patch explicitly adds `getCompilerRTPath()` to the path when linking flang_rt. Fixes #151031 (cherry picked from commit 8de481913353a1e37264687d5cc73db0de19e6cc)
The LLVM Compiler Infrastructure
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