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Makefile: Use 'command -v' instead of 'which' 

The former is in POSIX [1], but the latter is not [2].

[1]: http://pubs.opengroup.org/onlinepubs/9699919799/utilities/command.html
[2]: http://pubs.opengroup.org/onlinepubs/9699919799/idx/utilities.html

Signed-off-by: W. Trevor King <wking@tremily.us>
This commit is contained in:
W. Trevor King 2016-05-06 14:48:40 -07:00
parent dbce512cec
commit 1ac46cbd9f
1 changed files with 1 additions and 1 deletions
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2
Makefile
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@ -1,5 +1,5 @@
DOCKER ?= $(shell which docker)
DOCKER ?= $(shell command -v docker)
# These docs are in an order that determines how they show up in the PDF/HTML docs.
DOC_FILES := \
version.md \