Question

我通过使用cmake编译来安装lapack 3.4.2和3.5.0。在我的lapack 3.5.0的安装目录中，我找到一个文件./pkgconfig/lapack.pc，说Version: 3.4.2。所以我不确定我是否真的在那里安装了lapack 3.5.0。

有没有办法直接从lib liblapack.a（或Windows下的LAPACK.lib）获取lapack版本？例如，从库中的例程或使用特定工具？

Answer 1

lapack函数ilaver()是为你制作的！

它的原型是自我解释的：

subroutine ilaver   (   integer     VERS_MAJOR,
    integer     VERS_MINOR,
    integer     VERS_PATCH 
)

以下是两个演示如何使用它的程序：

在fortran程序中，遵守gcc main.f90 -o main -llapack

PROGRAM VER
IMPLICIT NONE

  INTEGER major, minor, patch
  CALL ilaver( major,minor, patch )
  WRITE(*,*) "LAPACK ",major,".",minor,".",patch
END PROGRAM VER

在由gcc main.c -o main -llapack

编译的c程序中

#include <stdio.h>

extern ilaver_(int* major,int* minor,int* patch);

int main()
{

    int major=0;
    int minor=0;
    int patch=0;

    ilaver_(&major,&minor,&patch);

    printf("lapack %d.%d.%d\n",major,minor,patch);
}

Answer 2

如果您不想编译任何内容，可以在Python中执行此操作：

ATL-MBP-MAC4:~ dmcdonald$ python3
Python 3.4.2 (default, Jan 29 2015, 06:34:22) 
[GCC 4.2.1 Compatible Apple LLVM 6.0 (clang-600.0.56)] on darwin
Type "help", "copyright", "credits" or "license" for more information.
>>> from ctypes import *
>>> from ctypes.util import *
>>> lapack = CDLL(find_library("lapack"))
>>> major, minor, patch = c_int(), c_int(), c_int()
>>> lapack.ilaver(byref(major), byref(minor), byref(patch))
0
>>> print("{0}.{1}.{2}".format(major.value, minor.value, patch.value))
3.2.1

有没有办法获得liblapack.a的版本？

2 个答案: