Question

After a merge I want to use git mergetool to resolve the issue but it fails with whatever tool I specify:

git mergetool                                                                                                          
 merge tool candidates: opendiff kdiff3 tkdiff xxdiff meld tortoisemerge gvimdiff diffuse ecmerge p4merge araxis bc3 vimdiff emerge
Merging:
main.c

Normal merge conflict for 'main.c':
  {local}: modified file
  {remote}: modified file
Hit return to start merge resolution tool (kdiff3):
merge of main.c failed

The tool I specify doesn’t seem to be launched at all.

Output of

git config --list

merge.tool=kdiff3
core.repositoryformatversion=0
core.filemode=true
core.bare=false
core.logallrefupdates=true

Answer 1

kdiff3 maybe not installed at your system. If it is, please, check if it is available through your PATH variable

Try

git config --global merge.tool <your_merge_program>

Also, you can specify your operating system and available merge programs