Imagecraft c compiler and development environment for the atmel avr

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ICCV8 for AVR – C Compiler for Atmel AVRLibrarianA library is a collection of object files in a special form that the linker understands.When a library's component object file is referenced by your program directly orindirectly, the linker pulls out the library code and links it to your program. Thestandard supplied library is libcavr.a, which contains the standard C and AtmelAVR specific functions.There are times where you need to modify or create libraries. A command-line toolcalled ilibw.exe is provided for this purpose. You can also create a library projectusing the IDE if you have the ADVANCED or PROFESSIONAL version of thecompiler. See Menu Reference: Build Options - Project.Note that a library file must have the .a extension. See Linker Operations.Compiling a File into a Library ModuleEach library module is simply an object file. Therefore, to create a library module, youneed to compile a source file into an object file. The ADVANCED andPROFESSIONAL versions allow you to build library project using the IDE. Otherwise,you will need to use the command line tool to compile the files and buid the libraryusing command line tools.Listing the Contents of a LibraryOn a command prompt window, change the directory to where the library is, and givethe command ilibw.exe -t . For example,ilibw.exe -t libcavr.aAdding or Replacing a ModuleTo add or replace a module:1. Compile the source file into an object module.2. Copy the library into the work directory.3. Use the command ilibw.exe -a to add or replace amodule.For example, the following replaces the putchar function in libcavr.a with yourversion.cd c:\iccv8avr\libsrc.avr200
ICCV8 for AVR – C Compiler for Atmel AVRcopy c:\iccv8avr\lib\libcavr.a ; copy libraryilibw.exe -a libcavr.a iochar.ocopy libcavr.a c:\iccv8avr\lib ; copy backThe ilibw.exe command creates the library file if it does not exist; to create a newlibrary, give ilibw.exe a new library file name.Deleting a ModuleThe command switch -d deletes a module from the library. For example, the followingdeletes iochar.o from the libcavr.a library:cd c:\iccv8avr\libsrc.avrcopy c:\iccv8avr\lib\libcavr.a ; copy libraryilibw.exe -d libcavr.a iochar.o ; deletecopy libcavr.a c:\iccv8avr\lib ; copy back201
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Imagecraft c compiler and development environment for the atmel avr

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