ld: symbol(s) not found when linking library containing no executable functions


Reference Number : dpd200045548


Version : 10.1, 11.0, 11.1, 12.0, 12.1


Product : Intel Fortran Compiler


Operating System : Mac OS X


Problem Description :  If a library built with ar contains objects with Fortran module data but no executable functions, the symbols corresponding to the module data may not be resolved when an object referencing them is linked against the library. The symbols are present: the compiler generates a common symbol (C), e.g.
0000000000000050 C _module_modname_mp_varname_
but the linker does not realize that it needs to link the corresponding object.


Resolution Status : This issue may be resolved by adding -fno-common to the compiler (not linker) options. This will cause symbols such as the above to be placed in the text section instead of the common section, and the linker will then pick them up.



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