LLVM回归测试-error：use of unknown builtin '__builtin_malloc'

[xijing21]

在按照https://github.com/mollybuild/RISCV-Measurement/blob/master/Build-RISCV-LLVM-and-run-testsuite.md执行测试任务时报错。

测试源码：https://github.com/plctlab/llvm-project.git
测试分支：origin/rvv-iscas
commit id：c360b611314ec39777487d050af6daa24eae811c

测试步骤：

$ git clone https://github.com/plctlab/llvm-project.git

$ cd llvm-project

$ mkdir build && cd build

$ cmake -DLLVM_PARALLEL_LINK_JOBS=3 -DLLVM_TARGETS_TO_BUILD="X86;RISCV" -DLLVM_ENABLE_PROJECTS="clang" -G Ninja ../llvm

$ ninja

$ ninja check  

在执行ninja check的时候，出现issue 16错误；

忽略此错误，继续执行：参考https://llvm.org/docs/TestSuiteGuide.html继续：

xj@e2ba8bd04169:~/RISCV/llvm-project/build$ ./bin/llvm-lit --version
lit 0.12.0dev
xj@e2ba8bd04169:~/RISCV/llvm-project/build$ cd ..
xj@e2ba8bd04169:~/RISCV/llvm-project$  git clone https://github.com/llvm/llvm-test-suite.git test-suite

xj@e2ba8bd04169:~/RISCV/llvm-project$  cd test-suite
xj@e2ba8bd04169:~/RISCV/llvm-project$  mkdir build  && cd build

xj@e2ba8bd04169:~/RISCV/llvm-project/test-suite$  cmake -DCMAKE_C_COMPILER=/home/xj/RISCV/llvm-project/build/bin/clang -C../test-suite/cmake/caches/O3.cmake ../test-suite
loading initial cache file ../test-suite/cmake/caches/O3.cmake
-- The C compiler identification is Clang 12.0.0
-- The CXX compiler identification is Clang 12.0.0
-- Check for working C compiler: /home/xj/RISCV/llvm-project/build/bin/clang
-- Check for working C compiler: /home/xj/RISCV/llvm-project/build/bin/clang -- works
-- Detecting C compiler ABI info
-- Detecting C compiler ABI info - done
-- Detecting C compile features
-- Detecting C compile features - done
-- Check for working CXX compiler: /home/xj/RISCV/llvm-project/build/bin/clang++
-- Check for working CXX compiler: /home/xj/RISCV/llvm-project/build/bin/clang++ -- works
-- Detecting CXX compiler ABI info
-- Detecting CXX compiler ABI info - done
-- Detecting CXX compile features
-- Detecting CXX compile features - done
CMake Error at CMakeLists.txt:71 (message):
  In-source builds are not allowed.

  CMake would overwrite the makefiles distributed with LLVM.

  Please create a directory and run cmake from there, passing the path

  to this source directory as the last argument.

  This process created the file `CMakeCache.txt' and the directory
  `CMakeFiles'.

  Please delete them.

-- Configuring incomplete, errors occurred!
See also "/home/xj/RISCV/llvm-project/test-suite/CMakeFiles/CMakeOutput.log".

按照提示修改：

xj@e2ba8bd04169:~/RISCV/llvm-project/test-suite$  rm -rf CMakeFiles  && rm CMakeCache.txt


xj@e2ba8bd04169:~/RISCV/llvm-project/test-suite/build$  cmake -DCMAKE_C_COMPILER=/home/xj/RISCV/llvm-project/build/bin/clang -C../../test-suite/cmake/caches/O3.cmake ../../test-suite

cmake成功，按照操作指导中的【注意事项】进行修改，除了

改了执行报错，又改回去了。

继续执行make：

xj@e2ba8bd04169:~/RISCV/llvm-project/test-suite/build$ make
报错：

[xijing21]

补充下，以上执行make之前的~/RISCV/llvm-project/test-suite/build/CMakeCache.txt

[xijing21]

llvm/llvm-project.git 上make test-suite也在同样的位置报错：

[xijing21]

llvm/llvm-project.git 上make test-suite也在同样的位置报错：

这里我自己的原因，犯了错误，编译的指定错了路径

[xijing21]

同样的问题参考：#15

[lazyparser]

good
所有的过程就这么多积累issues的记录。

注意尽量截图之后把里面的内容也文字形式贴出来，方便后人检索。

类似 make 或者 ninja 的工作可以使用

make-or-other-command 2>&1 | tee make-log-DATE.txt

保留一份。之后可以使用 pastebinit 之类的小工具直接上传到类似 paste.ubuntu.com 这样的站点。提供一个 url 可以看到完整的log

[zhangyu-liu]

请问您解决这个问题了吗？

[oldhe777]

我尝试官方的12.0.1版本，能够通过。大概和 test-suite的版本有关。