[PATCHv2 8/7] debian/rules: fix version comparison for Ubuntu

[Eric Wong <e@80x24.org>]

Perl version strings do not accept values such as "12.10ubuntu1",
so only compare the digits and "." parts at the beginning.

Tested-by: Stefan Metzmacher <metze@samba.org>
Link: https://lore.kernel.org/io-uring/8ccd3b34-bd3a-6c9f-fdb6-64d1b3b43f64@samba.org/
Signed-off-by: Eric Wong <e@80x24.org>
---
 debian/rules | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/debian/rules b/debian/rules
index cd41bb8..d0b4eea 100755
--- a/debian/rules
+++ b/debian/rules
@@ -84,7 +84,8 @@ binary-arch: install-arch
 # --add-udeb is needed for < 12.3, and breaks with auto-detection
 #  on debhelper 13.3.4, at least
 	if perl -MDebian::Debhelper::Dh_Version -e \
-	'exit(eval("v$$Debian::Debhelper::Dh_Version::version") lt v12.3)'; \
+	'($$v) = ($$Debian::Debhelper::Dh_Version::version =~ /\A([\d\.]+)/);' \
+	-e 'exit(eval("v$$v") lt v12.3)'; \
 		then dh_makeshlibs -a; else \
 		dh_makeshlibs -a --add-udeb '$(libudeb)'; fi