awk.Makefile

# awk program that patches the Makefile generated by Coq.

# Detect the name this project will be installed under.
/\$\(COQLIBINSTALL\)\/.*\/\$\$i/ {
# Wow, POSIX awk is really broken.  I mean, isn't it supposed to be a text processing language?
# And there is not even a way to access the matched groups of a regexp...?!? Lucky enough,
# we can just split the string at '/' here.
	split($0, PIECES, /\//);
	PROJECT=PIECES[2];
}

# Patch the uninstall target to work properly, and to also uninstall stale files.
# Also see <https://coq.inria.fr/bugs/show_bug.cgi?id=4907>.
# This (and the section above) can be removed once we no longer support Coq 8.6.
/^uninstall: / {
	print "uninstall:";
	print "\tif [ -d \"$(DSTROOT)\"$(COQLIBINSTALL)/"PROJECT"/ ]; then find \"$(DSTROOT)\"$(COQLIBINSTALL)/"PROJECT"/ \\( -name \"*.vo\" -o -name \"*.v\" -o -name \"*.glob\" -o \\( -type d -empty \\) \\) -print -delete; fi";
	getline;
	next
}

# This forwards all unchanged lines
1