The default value of USE_ABACUS_LIBM flag is inconsistent with doc

[scott-5]

Details

As stated in the doc, the flag USE_ABACUS_LIBM is enabled by default unless using Intel Compiler.

However, CMakeLists.txt seems to disable USE_ABACUS_LIBM by default, which is inconsistent with doc.

I am not proficient in cmake build, so please forgive me if there is any misunderstanding.

Have you read the online manual http://abacus.deepmodeling.com/en/latest/

• Yes, I have read the online manual.

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