【发布时间】：2021-08-28 18:27:57
【问题描述】：
嘿，我正在尝试将 Halide 构建到主机 OSX 系统上 arm64-v8a Android 架构的静态库中。当我运行以下命令时，我得到下面的链接错误。我做错了哪一部分？
命令运行
$ cmake -S .-B build \
-DCMAKE_CROSSCOMPILING=True \
-DHalide_TARGET=arm-64-android \
-DHalide_SHARED_LLVM=ON \
-DBUILD_SHARED_LIBS=OFF \
-DLLVM_DIR=/usr/local/Cellar/llvm/12.0.1/lib/cmake/llvm \
-DClang_DIR=/usr/local/Cellar/llvm/12.0.1/lib/cmake/clang \
-DLLD_DIR=/usr/local/Cellar/llvm/12.0.1/lib/cmake/lld \
-DLLVM_TABLEGEN=/usr/local/Cellar/llvm/12.0.1/bin/llvm-tblgen \
-DCLANG_TABLEGEN=/usr/local/Cellar/llvm/12.0.1/bin/ \
-DLLVM_DEFAULT_TARGET_TRIPLE=aarch64-linux-android \
-DLLVM_TARGET_ARCH=aarch64 \
-DLLVM_TARGETS_TO_BUILD=aarch64 \
-DCMAKE_BUILD_TYPE=Debug
$ cmake --build ./build
链接错误
ld: warning: ignoring file variable_num_threads.a, building for macOS-x86_64 but attempting to link with file built for unknown-unsupported file format ( 0x21 0x3C 0x61 0x72 0x63 0x68 0x3E 0x0A 0x2F 0x20 0x20 0x20 0x20 0x20 0x20 0x20 )
ld: warning: ignoring file variable_num_threads.runtime.a, building for macOS-x86_64 but attempting to link with file built for unknown-unsupported file format ( 0x21 0x3C 0x61 0x72 0x63 0x68 0x3E 0x0A 0x2F 0x20 0x20 0x20 0x20 0x20 0x20 0x20 )
Undefined symbols for architecture x86_64:
"_halide_join_thread", referenced from:
_main in variable_num_threads_aottest.cpp.o
"_halide_set_num_threads", referenced from:
mess_with_num_threads(void*) in variable_num_threads_aottest.cpp.o
_main in variable_num_threads_aottest.cpp.o
"_halide_spawn_thread", referenced from:
_main in variable_num_threads_aottest.cpp.o
"_variable_num_threads", referenced from:
_main in variable_num_threads_aottest.cpp.o
ld: symbol(s) not found for architecture x86_64
clang: error: linker command failed with exit code 1 (use -v to see invocation)
【问题讨论】：
-
值得注意的是：none 的
LLVM_*变量（LLVM_DIR除外）在 libHalide 构建中执行任何操作。此外，Halide_TARGET仅影响生成器测试，不影响主库。 -
感谢您的留言
标签： c++ cmake cross-compiling halide