Difference between revisions of "Creating A Patch"

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   patch < mypatch.diff
 
   patch < mypatch.diff
 +
 +
Or, to fix separators:
 +
 +
  patch -p0 < mypatch.diff

Revision as of 02:53, 4 March 2006

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Instructions

This assumes you have gotten Lazarus from SVN. Getting Lazarus Via SVN

Open a command or cmd prompt and cd to the directory that the Lazarus source exists.

Instructions For Windows:

We'll assume that you have your SVN checkout of Lazarus in C:\lazarus

  1. Open a MS-DOS prompt
  2. c: {press enter}
  3. cd \lazarus {press enter}
  4. svn diff > mypatch.dif {press enter}

Instructions For Linux/BSD etc:

We'll assume that you have your SVN checkout of Lazarus in $HOME/lazarus

  1. Open your favorite Terminal program
  2. cd $HOME {press enter}
  3. cd lazarus {press enter}
  4. svn diff > mypatch.diff {press enter}


Note: I also like to look the file over to see if there is anything in there that shouldn't be.

Now Zip or gzip the file you have created and email it to the Lazarus mailing list (40 kB limit) or the mailbox for patches patch@lazarus.dommelstein.net.

That's all!

Troubleshooting

This mostly applies to Windows but could apply for other platforms as well.

You get the error "svn command not found" or similar. Most probably you do not have svn.exe in your PATH environment variable. The following steps should fix this problem:

  1. Locate svn.exe using the Find Files feature of your Start menu.
  2. Once you have located svn.exe you need to add the directory it is in to your PATH.

As an example: From the command prompt type:

  set PATH=%PATH%;"C:\Program Files\TortoiseSVN\"

Note: Your directory containing svn.exe might not be the same on your computer as the one used in this document. It is used here only as an example.


The following is optional:

To make this permanant

For Windows98 or lower, you can add the line above (or similar) to your C:\autoexec.bat file near the end.

For Windows2000 or greater you can add this directory to your PATH by:

  1. Right-Clicking on "My Computer"
  2. Select "Properties"
  3. Choose the "Advanced" tab.
  4. Click the "Environment Variables" button.
  5. Locate the "Path" line in "System Variables" and add: ;"C:\Program Files\TortoiseSVN\" to the end.

Note: Your directory containing svn.exe might not be the same on your computer as the one used in this document. It is used here only as an example.

Applying a patch

To apply a patch is simple. You can test the patch by using the --dry-run toggle switch like this:


  patch --dry-run < mypatch.diff


The output of the patch program will be identical to the actual patching, only it does not alter the sourcecode files. Very handy for testing, without wanting to screw up your source.

To do the final patching, you use the following commandline:


  patch < mypatch.diff

Or, to fix separators:

  patch -p0 < mypatch.diff