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ipo: warning #11010: file format not recognized ...

Object files generated by the Intel compilers using the option -ipo contain additional information for the compiler/linker in order to perform code optimizations. The message ipo: warning #11010: file format not recognized for ..., possible linker script occurs if the gnu command ar is used to build static libraries from such object files. To avoid this warning, please use the Intel tool


instead of ar.

Important: If you ignore this warning, the compiler cannot find the corresponding object files and finally the linker will abort with an unresolved symbol error.