Assign a makefile variable value to a bash command result?

by

You will need to double-escape the $ character within the shell command:

HEADER = $(shell for file in `find . -name *.h`;do echo $$file; done)

The problem here is that make will try to expand $f as a variable, and since it doesn’t find anything, it simply replaces it with “”. That leaves your shell command with nothing but echo ile, which it faithfully does.

Adding $$ tells make to place a single $ at that position, which results in the shell command looking exactly the way you want it to.

More Related Contents:

  1. How can I use Bash syntax in Makefile targets?
  2. Input data to a shell script [closed]
  3. Why would a correct shell script give a wrapped/truncated/corrupted error message? [duplicate]
  4. When do we need curly braces around shell variables?
  5. Replace one substring for another string in shell script
  6. How to find the difference in days between two dates?
  7. How to assign the output of a Bash command to a variable? [duplicate]
  8. Running script upon login in mac OS X [closed]
  9. How to append output to the end of a text file
  10. Command substitution: backticks or dollar sign / paren enclosed? [duplicate]
  11. Why start a shell command with a backslash?
  12. How to process each output line in a loop?
  13. Set a parent shell’s variable from a subshell
  14. Value too great for base (error token is “08”) [duplicate]
  15. What expands to all files in current directory recursively?
  16. find: missing argument to -exec
  17. What does it mean in shell when we put a command inside dollar sign and parentheses: $(command)
  18. Looping through all files in a directory [duplicate]
  19. How does bash tab completion work?
  20. Connect to sqlplus in a shell script and run SQL scripts
  21. Convert seconds to hours, minutes, seconds
  22. Is there an elegant way to store and evaluate return values in bash scripts?
  23. How to match a single quote in sed
  24. How do I integrate MSYS2 shell into Visual studio code on Window?
  25. How do I get both STDOUT and STDERR to go to the terminal and a log file?
  26. -bash: __git_ps1: command not found
  27. Use GNU find to show only the leaf directories
  28. Get the name of the caller script in bash script
  29. docker entrypoint running bash script gets “permission denied”
  30. What does `kill -0 $pid` in a shell script do?

Leave a Comment