Search code examples
gitmakefilegnu-make

checking git status in Makefile

I want to know inside a Makefile if my repo is clean or not. I found that git status --porcelain can be my friend. I see it working within bash but I can't get it work in Makefile.

I want to set a variable in a Makefile depending on the status of git status --porcelain.

# check if return value of shell is true or false works:
$(shell true)
ifneq ($(.SHELLSTATUS),0)
    DIRTY=YES
else
    DIRTY=NO
endif   

$(shell test -z "$(git status --porcelain)" )
$(info $(.SHELLSTATUS))

But the last line of the Makefile always return 0 independent of the status of my repo. Maybe some missing escape sequences?

Solution

  • $ is special in Makefiles. You need to double it to propagate it to the underlying shell:

    $(shell test -z "$$(git status --porcelain)" )
#                ~~