bjope added a comment.
Got some problems with my builds after this commit.
My cmake commands looks like this (well, this is after having tried to fix the
problem by replacing `x86_64-unknown-linux-gnu` by `x86_64-linux-gnu` as I
figured that might be needed after looking at the changes in this patch):
cmake /repo/uabbpet/llvm-upstream/llvm --debug-trycompile -G Ninja
-DCMAKE_MAKE_PROGRAM=/app/ninja/1.8.2/SLED11-64/bin/ninja
-DCMAKE_BUILD_TYPE=Release -DCMAKE_EXPORT_COMPILE_COMMANDS=ON
-DCMAKE_INSTALL_PREFIX=/compiler-clang -DLLVM_APPEND_VC_REV=OFF
-DLLVM_ENABLE_ASSERTIONS=ON
-DLLVM_ENABLE_PROJECTS='clang;clang-tools-extra;lld'
-DLLVM_BUILTIN_TARGETS=default -DLLVM_ENABLE_PER_TARGET_RUNTIME_DIR=ON
-DLLVM_ENABLE_RUNTIMES='compiler-rt;libcxx;libcxxabi;libunwind'
-DRUNTIMES_x86_64-linux-gnu_SANITIZER_USE_STATIC_LLVM_UNWINDER=ON
-DRUNTIMES_x86_64-linux-gnu_SANITIZER_USE_STATIC_CXX_ABI=ON
-DRUNTIMES_x86_64-linux-gnu_COMPILER_RT_USE_BUILTINS_LIBRARY=ON
-DRUNTIMES_x86_64-linux-gnu_COMPILER_RT_CAN_EXECUTE_TESTS=OFF
-DRUNTIMES_x86_64-linux-gnu_LIBCXX_HAS_ATOMIC_LIB=0
-DRUNTIMES_x86_64-linux-gnu_COMPILER_RT_BUILD_XRAY=OFF
-DLLVM_RUNTIME_TARGETS='x86_64-linux-gnu' -DLLVM_ENABLE_LIBPFM=OFF
-DCLANG_TOOLING_BUILD_AST_INTROSPECTION=OFF -DCLANG_ROUND_TRIP_CC1_ARGS=OFF
But my build fails, and it seems to be related to the message `-- Failed to
find compiler-rt builtins library for x86_64-linux-gnu`, and later I get
-- Compiler-RT supported architectures: x86_64
CMake Error at
/repo/uabbpet/llvm-upstream/compiler-rt/cmake/Modules/AddCompilerRT.cmake:258
(message):
Cannot find builtins library for the target architecture
Call Stack (most recent call first):
/repo/uabbpet/llvm-upstream/compiler-rt/lib/stats/CMakeLists.txt:23
(add_compiler_rt_runtime)
It tries to find libclang using a path like this
`my_build_dir/lib/clang/13.0.0/lib/linux/libclang_rt.builtins-x86_64.a` (which
is what I get if manually run `my_build_dir/bin/clang --rtlib=compiler-rt
-print-libgcc-file-name` as well). But what I get when building is
`my_build_dir/lib/clang/13.0.0/lib/x86_64-unknown-linux-gnu/libclang_rt.builtins.a`
and
`my_build_dir/lib/clang/13.0.0/lib/i386-unknown-linux-gnu/libclang_rt.builtins.a.
Not sure exactly what I'm doing wrong here. Looks like some kind of mismatch. I
assume the layout with separate dirs for the libs is due to
`-DLLVM_ENABLE_PER_TARGET_RUNTIME_DIR=ON`, but the just built clang does not
seem to know about that. Should it know about that? Is it no longer allowed to
use `-DLLVM_ENABLE_PER_TARGET_RUNTIME_DIR=ON` in combination with
`COMPILER_RT_USE_BUILTINS_LIBRARY=ON`?
Or maybe the problem is that we use `-DLLVM_BUILTIN_TARGETS=default`?
Repository:
rG LLVM Github Monorepo
CHANGES SINCE LAST ACTION
https://reviews.llvm.org/D101194/new/
https://reviews.llvm.org/D101194
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