4.1.2. Library directory structure

The libraries are installed in two subdirectories within install_directory\lib:


This subdirectory contains the variants of the ARM C library, the floating-point arithmetic library, and the math library. The accompanying header files are in install_directory\include.


This subdirectory contains the variants of the Rogue Wave C++ library and supporting C++ functions. The Rogue Wave and supporting C++ functions are collectively referred to as the ARM C++ Libraries. The accompanying header files are installed in install_directory\include.

The environment variable ARMLIB must be set to point to the lib directory. Alternatively use the -libpath argument to the linker to identify the directory holding the library subdirectories. You do not have to identify armlib and cpplib separately. The linker finds them for you from the location of lib.


  • The ARM C libraries are supplied in binary form only.

  • The ARM libraries must not be modified. If you want to create a new implementation of a library function, place the new function in an object file, or your own library, and include it when you link the application. Your version of the function is used instead of the standard library version.

  • Normally, only a few functions in the ANSI C library require re-implementation to create a target-dependent application.

  • The source for the Rogue Wave Standard C++ Library is not freely distributable. It can be obtained from Rogue Wave Software Inc., or through ARM Ltd, for an additional licence fee. See the Rogue Wave online documentation in install_directory\Html for more about the C++ library.

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