Make how to continue after a command fails

Question

The command   make all gives errors such as rm  cannot remove   lambda   No such file or directory so it stops  I want it to ignore the rm-not-found-errors  How can I force-make   Makefile  all          make clean         make  lambda         make  lambda t         make  activity         make  activity t lambda clean          rm  lambda  lambda t  activity  activity t lambda   lambda          awk   printf    4f  n   log 2  log 2 71828183    1   t year  gt   lambda   lambda t          paste  lambda t year  gt   lambda t   activity          awk   printf    4f  n     1 2 71828183  -  1   2     lambda t  gt   activity   activity t lambda          paste  activity t year  lambda    sed -e  s  t  t  amp  t g  -e  s     t     g    tee  gt   activity t lambda  gt     RESULTS currentActivity tex

User · Answer

Change clean to  rm -f  lambda  lambda t  activity  activity t lambda   I e  don t prompt for remove  don t complain if file doesn t exist

User · Answer

Put an -f option in your rm command   rm -f  lambda  lambda t  activity  activity t lambda

User · Answer

make -k  or --keep-going on gnumake  will do what you are asking for  I think   You really ought to find the del or rm line that is failing and add a -f to it to keep that error from happening to others though

User · Answer

Change your clean so rm will not complain   clean      rm -f  lambda  lambda t  activity  activity t lambda

User · Answer

Return successfully by blocking rm s returncode behind a pipe with the true command  which always returns 0  success   rm file   true

User · Answer

To get make to actually ignore errors on a single line  you can simply suffix it with   true  setting the return value to 0   For example   rm  lambda  lambda t  activity  activity t lambda 2 gt  dev null  true   This will redirect stderr output to null  and follow the command with true  which always returns 0  causing make to believe the command succeeded regardless of what actually happened   allowing program flow to continue

User · Answer

Try the -i flag  or --ignore-errors   The documentation seems to suggest a more robust way to achieve this  by the way      To ignore errors in a command line  write a - at the beginning of the line s text  after the initial tab   The - is discarded before the command is passed to the shell for execution       For example   clean    -rm -f   o       This causes rm to continue even if it is unable to remove a file    All examples are with rm  but are applicable to any other command you need to ignore errors from  i e  mkdir

[makefile] Make: how to continue after a command fails?

Examples related to makefile