我在Linux Fedora环境中下载并构建（貌似正确）了相关的BLAS和CBLAS库（来自netlib.org/blas）。这样的结果是一个blas_LINUX.a文件，我将其重命名为libblas.a并复制到\usr\local\lib，以及一个cblas.h文件，然后将其复制到\usr\include。随后，我尝试在CLion项目的CMakeList.txt文件中引用此文件。该文件如下：
project(test C)
cmake_minimum_required(VERSION 3.10)
set(CMAKE_C_STANDARD 99)
include_directories(include)
add_executable(${PROJECT_NAME} src/main.c)
find_library(blas libblas.a /usr/local/lib)
MESSAGE(STATUS "CBLAS location is: " ${blas})
target_link_libraries(${PROJECT_NAME} ${blas})
根据重新加载时cmake产生的消息，似乎发现cblas库很好。但是，当我尝试运行我的应用程序时，出现以下链接错误消息：
undefined reference to `cblas_dgemm`
以下是我的main.c文件的内容
#include <stdio.h>
#include <stdlib.h>
#include <cblas.h>
int main(int arg, char *args[]) {
.
.
.
printf("Processing cblas_dgemm matrix multiplication.\n");
cblas_dgemm(CblasRowMajor, CblasNoTrans, CblasNoTrans, N, N, N, alpha, A[0], N, B[0], N, beta, C[0], N);
.
.
.
return 0;
}
我不确定自己在哪里出问题了。我是使用cmake的新手，在网上搜索时，我正四处逛逛，试图找出问题所在。朝着正确方向的任何指针都将受到极大的欢迎和赞赏。
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arg [-m] ==> ignore
arg [elf_x86_64] ==> ignore
arg [-export-dynamic] ==> ignore
arg [-dynamic-linker] ==> ignore
arg [/lib64/ld-linux-x86-64.so.2] ==> ignore
arg [-o] ==> ignore
arg [cmTC_8e81c] ==> ignore
arg [/usr/lib/gcc/x86_64-redhat-linux/9/../../../../lib64/crt1.o] ==> ignore
arg [/usr/lib/gcc/x86_64-redhat-linux/9/../../../../lib64/crti.o] ==> ignore
arg [/usr/lib/gcc/x86_64-redhat-linux/9/crtbegin.o] ==> ignore
arg [-L/usr/lib/gcc/x86_64-redhat-linux/9] ==> dir [/usr/lib/gcc/x86_64-redhat-linux/9]
arg [-L/usr/lib/gcc/x86_64-redhat-linux/9/../../../../lib64] ==> dir [/usr/lib/gcc/x86_64-redhat-linux/9/../../../../lib64]
arg [-L/lib/../lib64] ==> dir [/lib/../lib64]
arg [-L/usr/lib/../lib64] ==> dir [/usr/lib/../lib64]
arg [-L/usr/lib/gcc/x86_64-redhat-linux/9/../../..] ==> dir [/usr/lib/gcc/x86_64-redhat-linux/9/../../..]
arg [CMakeFiles/cmTC_8e81c.dir/CMakeCCompilerABI.c.o] ==> ignore
arg [-lgcc] ==> lib [gcc]
arg [--push-state] ==> ignore
arg [--as-needed] ==> ignore
arg [-lgcc_s] ==> lib [gcc_s]
arg [--pop-state] ==> ignore
arg [-lc] ==> lib [c]
arg [-lgcc] ==> lib [gcc]
arg [--push-state] ==> ignore
arg [--as-needed] ==> ignore
arg [-lgcc_s] ==> lib [gcc_s]
arg [--pop-state] ==> ignore
arg [/usr/lib/gcc/x86_64-redhat-linux/9/crtend.o] ==> ignore
arg [/usr/lib/gcc/x86_64-redhat-linux/9/../../../../lib64/crtn.o] ==> ignore
collapse library dir [/usr/lib/gcc/x86_64-redhat-linux/9] ==> [/usr/lib/gcc/x86_64-redhat-linux/9]
collapse library dir [/usr/lib/gcc/x86_64-redhat-linux/9/../../../../lib64] ==> [/usr/lib64]
collapse library dir [/lib/../lib64] ==> [/lib64]
collapse library dir [/usr/lib/../lib64] ==> [/usr/lib64]
collapse library dir [/usr/lib/gcc/x86_64-redhat-linux/9/../../..] ==> [/usr/lib]
implicit libs: [gcc;gcc_s;c;gcc;gcc_s]
implicit dirs: [/usr/lib/gcc/x86_64-redhat-linux/9;/usr/lib64;/lib64;/usr/lib]
implicit fwks: []
看起来像动态链接器找不到共享库。
您可以使用ldd检查动态依赖项
查看/ bin / ls依赖性的示例
ldd /bin/ls
linux-vdso.so.1 (0x00007ffcc3563000)
libselinux.so.1 => /lib64/libselinux.so.1 (0x00007f87e5459000)
libcap.so.2 => /lib64/libcap.so.2 (0x00007f87e5254000)
libc.so.6 => /lib64/libc.so.6 (0x00007f87e4e92000)
libpcre.so.1 => /lib64/libpcre.so.1 (0x00007f87e4c22000)
libdl.so.2 => /lib64/libdl.so.2 (0x00007f87e4a1e000)
/lib64/ld-linux-x86-64.so.2 (0x00005574bf12e000)
libattr.so.1 => /lib64/libattr.so.1 (0x00007f87e4817000)
libpthread.so.0 => /lib64/libpthread.so.0 (0x00007f87e45fa000)
确保.so文件位于指定的路径。
我不知道您生成libblas.a的精确程度，但是可以看看FindBLAS CMake指令。 （请注意有关C / C ++的注意事项）