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Added Truthy shortcut for return val. 

I don't really like the feel of this but this allows us to call
$(return_val_truthy) to output a value of tue or false based on the retrun value
of the last command. This saves us from having to do make the call ` && echo
true || echo false`.

I will probaby switch this in the future to just have a `echo $?` function
instead. Then check if returnVal == zero. If I do that I will also need to
change the way OS works, requiring true => 0 and false => 1, which is a little
bit conter to how it should be.
This commit is contained in:
James Patrick 2019-04-30 23:22:02 -04:00
parent b7c64b5093
commit e5b9486fb3
1 changed files with 2 additions and 1 deletions
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3
lib/shared.mk
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@ -11,7 +11,8 @@ LIB_DIR := $(shell dirname $(realpath $(lastword $(MAKEFILE_LIST))))
mk_link := $(LIB_DIR)/helper/mk_link
rm_link := $(LIB_DIR)/helper/rm_link
report := LAST_RETURN=$$? $(LIB_DIR)/helper/report
cmd_exist = $(shell (($$+commands[$1])) && echo true || echo false )
return_val_truthy := && echo true || echo false
cmd_exist = $(shell (($$+commands[$1])) $(return_val_truthy) )
# Shortcut for the XDG dir if it exist. default to ~/.confg
XDG_DIR := $${XDG_CONFIG_DIR:-~/.config}