diff options
Diffstat (limited to 'third_party/nix/mk/functions.mk')
| -rw-r--r-- | third_party/nix/mk/functions.mk | 14 |
1 files changed, 14 insertions, 0 deletions
diff --git a/third_party/nix/mk/functions.mk b/third_party/nix/mk/functions.mk new file mode 100644 index 000000000000..c48775db8c3b --- /dev/null +++ b/third_party/nix/mk/functions.mk @@ -0,0 +1,14 @@ +# Utility function for recursively finding files, e.g. +# ‘$(call rwildcard, path/to/dir, *.c *.h)’. +rwildcard=$(foreach d,$(wildcard $1*),$(call rwildcard,$d/,$2) $(filter $(subst *,%,$2),$d)) + +# Given a file name, produce the corresponding dependency file +# (e.g. ‘foo/bar.o’ becomes ‘foo/.bar.o.dep’). +filename-to-dep = $(dir $1).$(notdir $1).dep + +# Return the full path to a program by looking it up in $PATH, or the +# empty string if not found. +find-program = $(shell for i in $$(IFS=: ; echo $$PATH); do p=$$i/$(strip $1); if [ -e $$p ]; then echo $$p; break; fi; done) + +# Ensure that the given string ends in a single slash. +add-trailing-slash = $(patsubst %/,%,$(1))/ |