cray CC包装器cmake find_package blas

Question

我刚刚在一个测试目录下创建了一个三行的CMakeLists.txt，下面没有任何文件。我尝试了导出lib、path等，但基本的技巧都不起作用。如何做到这一点呢？

cmake_minimum_required(VERSION 3.6 FATAL_ERROR)
project(test CXX)
find_package(BLAS REQUIRED)

并以如下方式运行，得到以下错误。

ramki@hostname:~/temp>CC=CC CXX=CC cmake ../nmflibrary/test/
-- The CXX compiler identification is GNU 6.3.0
-- Cray Programming Environment 2.5.13 CXX
-- Check for working CXX compiler: /opt/cray/craype/2.5.13/bin/CC
-- Check for working CXX compiler: /opt/cray/craype/2.5.13/bin/CC -- works
-- Detecting CXX compiler ABI info
-- Detecting CXX compiler ABI info - done
-- Detecting CXX compile features
-- Detecting CXX compile features - done
-- Looking for C++ include pthread.h
-- Looking for C++ include pthread.h - found
-- Looking for pthread_create
-- Looking for pthread_create - found
-- Found Threads: TRUE  
CMake Error at /autofs/nccs-svm1_sw/titan/.swci/0-login/opt/spack/20170612/linux-suse_linux11-x86_64/gcc-4.3.4/cmake-3.9.0-owxiriblogovogl5zbrg45ulm3ln34cx/share/cmake-3.9/Modules/FindBLAS.cmake:699 (message):
  A required library with BLAS API not found.  Please specify library
  location.
Call Stack (most recent call first):
  CMakeLists.txt:6 (find_package)


-- Configuring incomplete, errors occurred!
See also "/ccs/home/ramki/temp/CMakeFiles/CMakeOutput.log".
See also "/ccs/home/ramki/temp/CMakeFiles/CMakeError.log".

如何让具有blas要求的find_package在cray包装器上工作？

Answer 1

Cray编译器隐式地链接BLAS和LAPACK库，因此通常不会在命令行中给出它们。对于BLAS，检测这种情况的能力是added到CMake 3.13.0，对于LAPACK，检测能力是added到CMake 3.16.0。

因此，如果您只使用BLAS，那么只需download一个较新的CMake二进制tarball即可。