makepkg: calculate exact total file size

The current calculation of the total file size for a package using "du"
suffers from issues in portability and correctness.  Especially on btrfs,
this can result in clearly wrong package information such as:

Download Size  : 14684.29 KiB
Installed Size : 7628.00 KiB

Use an approach based on "stat" to calculate total file size.

Signed-off-by: Allan McRae <allan@archlinux.org>
Signed-off-by: Dan McGee <dan@archlinux.org>

1 files changed, 1 insertions, 2 deletions

diff --git a/scripts/makepkg.sh.in b/scripts/makepkg.sh.in
index 64b33c68..13185eec 100644
--- a/scripts/makepkg.sh.in
+++ b/scripts/makepkg.sh.in
@@ -1109,8 +1109,7 @@ write_pkginfo() {
 	else
 		local packager="Unknown Packager"
 	fi
-	local size="$(@DUPATH@ -sk)"
-	size="$(( ${size%%[^0-9]*} * 1024 ))"
+	local size="$(find . -print0 | xargs -0 @SIZECMD@ | awk '{ sum += $1 } END { print sum }')"
 
 	msg2 "$(gettext "Generating %s file...")" ".PKGINFO"
 	echo "# Generated by makepkg $myver"