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makefilecshdirname

dirname strange behavior with file list & Makefile

My directory :

$ ls *
Makefile

dir1:
file1.txt  file2.txt

dir2:
file1.txt

The Makefile :

A = $(wildcard ./dir1/*)
A += $(wildcard ./dir1/*)
B = $(dirname $(A))

print-% : ; @echo $* = $($*)

Outputs of print rule :

$ make print-A
A = ./dir1/file1.txt ./dir1/file2.txt ./dir1/file1.txt ./dir1/file2.txt
$ make print-B
B =

I would like the B variable to have the list of my sub directory relative paths (./dir1/ and ./dir2/) why this don't work ? It is ok if there is only on file in A.

Solution

  • How is the $(dirname ...) macro defined? $(dir ...) may do what you expect.