Hunk 1 FAILED at 1 What s that mean

Question

I get the following error when running make  and I have no idea what it means or what to do about it  Can anyone illuminate me or point me in the right direction    cd libdvdnav-git  amp  amp  patch -p1   lt        contrib src dvdnav dvdnav patch patching file Makefile am Hunk  1 FAILED at 1  1 out of 1 hunk FAILED -- saving rejects to file Makefile am rej make       dvdnav  Error 1   I m trying to cross compile VLC for win32  using linux

User · Answer

In my case  the patch was generated perfectly fine by IDEA  however  I edited the patch and saved it which changed CRLF to LF and then the patch stopped working   Curiously  converting it back to CRLF did not work  I noticed in VI editor  that even after setting to DOS format  the   M  were not added to the end of lines  This forced me to only make changes in VI  so that the EOLs were preserved   This may apply to you  if you make changes in a non-Windows environment to a patch covering changes between two versions both coming from Windows environment  You want to be careful how you edit such files   BTW ignore-whitespace did not help

User · Answer

In some cases  there is no difference in file versions  but only in indentation  spacing  line ending or line numbers   To patch despite those differences  it s possible to use the following two arguments    --ignore-whitespace   It ignores whitespace differences  indentation  etc      --fuzz 3   the  --fuzz X  option sets the maximum fuzz factor to lines  This option only applies to context and unified diffs  it ignores up to X lines while looking for the place to install a hunk  Note that a larger fuzz factor increases the odds of making a faulty patch  The default fuzz factor is 2  there is no point to setting it to more than the number of lines of context in the diff  ordinarily 3   Don t forget to user  --dry-run    It ll try the patch without applying it   Example     patch --verbose --dry-run --ignore-whitespace --fuzz 3  lt   path to patch patch   More informations about Fuzz    https   www gnu org software diffutils manual html node Inexact html

User · Answer

It is an error generated by patch  If you would open the  patch file  you d see that it s organized in a bunch of segments  so-called  hunks   Every hunk identifies corresponding pieces of code  by line numbers  in the old and new version  the differences between those pieces of code  and similarities between them  the  context     A hunk might fail if the similarities of a hunk don t match what s in the original file  When you see this error  it is almost always because you re using a patch for the wrong version of the code you re patching  There are a few ways to work around this    Get an updated version of libdvdnav that already includes the patch  best option   Get a  patch file for the version of libdvdnav you re patching  Patch manually  For every hunk in the patch  try to locate the corresponding file and lines in libdvdnav  and correct them according to the instructions in the patch  Take the version of libdvdnav that s closer to whatever version the  patch file was intended for  probably a bad idea

User · Answer

Debugging Tips   Add crlf to the end of the patch file and test if it works try the  --ignore-whitespace command like in   markus ubuntu    patch -Np1 --ignore-whitespace -d software-1 0  lt  fix-bug patch  see tutorial by markus

User · Answer

I got the  hunks failed  message when I wasn t applying the patch in the top directory of the associated git project  I was applying the patch  where I created it  in a subdirectory   It seems patches can be created from subdirectories within a git project  but not applied

User · Answer

Follow the instructions here  it solved my problem   you have to run the command like as follow  patch -p0 --dry-run  lt  path to your patchFile yourPatch patch

[makefile] Hunk #1 FAILED at 1. What's that mean?

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