CentOS 7下编译出现/usr/bin/ld: cannot find -lclapack错误如何解决？

That linker error you're hitting means your system is missing the CLAPACK (C interface to the LAPACK linear algebra library) development packages—so the linker can't locate libclapack.so when trying to build your TestSVM executable. Here's how to resolve this on CentOS 7.4:

1. Install the required CLAPACK packages #

Use yum with root privileges to install the necessary development libraries:

sudo yum install -y lapack-devel clapack-devel

Why both? lapack-devel provides the underlying LAPACK library dependencies, while clapack-devel includes the C-compatible headers and shared libraries that your code is linking against.

2. Verify the library is installed correctly #

Check that the shared library exists in your system's default library path:

ls /usr/lib64/libclapack.so

If you see the file path printed, the installation was successful.

3. Rebuild your project #

Clean up any partial build artifacts first, then re-run the compile command:

make clean
make

Troubleshooting tip #

If you still run into issues, double-check your CMake configuration. Ensure your CMakeLists.txt explicitly links against clapack for your target, like this:

target_link_libraries(TestSVM PRIVATE clapack)

内容的提问来源于stack exchange，提问作者Mona Jalal