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98 lines
3.6 KiB
98 lines
3.6 KiB
$IdPath$ |
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If you are contributing code to the YASM project or trying to compile YASM |
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from a CVS checkout, please read this first. |
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====================== |
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HACKER'S GUIDE TO YASM |
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====================== |
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Table of Contents |
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* What to Read |
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* Building From a Working (CVS) Copy -- On UNIX |
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* Generating ChangeLogs |
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What to Read |
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============ |
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Before you can contribute code, you'll need to familiarize yourself with the |
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existing codebase, design, and internal interfaces. |
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Check out a copy of YASM from CVS (or grab a development tarball) so you can |
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look at the codebase. |
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Look at the deisgn document (the online web version is probably the easiest to |
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read, because the design doc is written in DocBook and most people don't have |
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the SGML tools installed to process it). This is the overall design document, |
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which gives you a high-level view of the assembler modular structure and how |
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the various components interface. It also covers coding standards. |
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Within the src/ directory, there's a bunch of header files with huge comments. |
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If you read through these, you'll have a pretty good understanding of the |
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implementation details. |
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* the core data structures: bytecode.h, section.h, expr.h, symrec.h |
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* the module interfaces: preproc.h, parser.h, objfmt.h, optimizer.h, etc. |
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* the error/warning system: errwarn.h |
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YASM is written in ANSI/ISO C89 for maximum portability. See the design |
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document for more details on portability considerations. Several C files and |
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util.h provide functions that are standard on some machines but not available |
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on others. The function and header checks are performed using GNU configure. |
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Building From a Working (CVS) Copy -- On UNIX |
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============================================= |
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Unlike a packaged distribution, the YASM CVS tree doesn't contain a configure |
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script nor any of the other generated files normally used in configuration and |
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building. You have to regenerate these files in your local copy before |
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running configure. |
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Building in this fashion requires many more programs than YASM normally |
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requires in a packaged distribution. All of the following are GNU programs, |
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which are fairly portable in their own right: |
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* automake (1.5 or newer) |
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* autoconf (2.5 or newer preferred, 2.13 will still work) |
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* m4 |
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* gettext |
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* make (GNU preferred) |
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* flex |
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* bison |
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* gcc |
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* groff |
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* perl (5.003 or newer) |
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To prepare your working copy for building, run: |
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% ./autogen.sh |
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The autogen.sh script runs gettextize, aclocal, autoconf, autoheader, automake, |
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and finally runs "./configure --enable-dev". If an error occurs during this |
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process, something is wrong in your build configuration (such as required tools |
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missing or misconfigured). After autogen.sh completes successfully, use make |
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to build YASM. We recommend you use GNU make because gettext seems to play |
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better with it than with other make tools. Use the distcheck target of make to |
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build a package. If this doesn't complete successfully, something is wrong in |
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the source tree. If you caused the breakage, fix it or ask someone to help you |
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fix it. If you didn't cause it (it happens with a new checkout), notify the |
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developers! |
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Generating ChangeLogs |
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===================== |
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YASM does not keep ChangeLog files, because they're redundant with the CVS log |
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entries. But ChangeLog is an easier format to browse, so it's often handy to |
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generate a ChangeLog from the CVS log data. You can do so with the script |
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cvs2cl.pl, from: |
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http://www.red-bean.com/cvs2cl/ |
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If you've never used it before, try invoking it like this: |
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cvs2cl.pl -r -f Changes |
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Caution: don't use the default output filename (ChangeLog) in the top-level. |
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It's all too easy to check it into CVS by accident. Someday we may fix this.
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