[PATCH v3 6/7] make-debs: use version from RPM .spec

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

git tags may be behind the .spec file during development, so
favor the .spec file as in commit c0b43df28a982747
(src/Makefile: use VERSION variable consistently, 2021-11-15).
This brings us one step closer to being able to build Debian
packages without git.

Signed-off-by: Eric Wong <e@80x24.org>
---
 Makefile     | 5 ++++-
 make-debs.sh | 2 +-
 2 files changed, 5 insertions(+), 2 deletions(-)

diff --git a/Makefile b/Makefile
index 28c0fd8..48fb48a 100644
--- a/Makefile
+++ b/Makefile
@@ -11,7 +11,10 @@ all:
 	@$(MAKE) -C test
 	@$(MAKE) -C examples
 
-.PHONY: all install default clean test
+print-version:
+	@echo $(VERSION)
+
+.PHONY: all install default clean test print-version
 .PHONY: FORCE cscope
 
 partcheck: all
diff --git a/make-debs.sh b/make-debs.sh
index aea05f0..0913c47 100755
--- a/make-debs.sh
+++ b/make-debs.sh
@@ -32,7 +32,7 @@ src_dir=$(readlink -e `basename $0`)
 liburing_dir=$(dirname $src_dir)
 basename=$(basename $liburing_dir)
 dirname=$(dirname $liburing_dir)
-version=$(git describe --match "lib*" | cut -d '-' -f 2)
+version=$(make print-version | tail -n1)
 outfile="liburing-$version"
 orgfile=$(echo $outfile | tr '-' '_')