The branch stable/15 has been updated by adrian:

URL: 
https://cgit.FreeBSD.org/src/commit/?id=4b5b8d69b23a73e932a8d46829b1ec65ba50be36

commit 4b5b8d69b23a73e932a8d46829b1ec65ba50be36
Author:     Adrian Chadd <[email protected]>
AuthorDate: 2026-01-11 03:59:41 +0000
Commit:     Adrian Chadd <[email protected]>
CommitDate: 2026-01-16 06:26:30 +0000

    powerpc: fix release image building for Apple partitions
    
    awk changed somewhere between 14 and 15 and it stopped accepting
    a hexadecimal number as its input - it will always return 0.
    This results in a very badly written apple boot block.
    
    So just remove it; do the math in shell.
    
    PR:             kern/292341
    Differential Revision:  https://reviews.freebsd.org/D54639
    Reviewed by:    imp
    MFC after:      1 week
    
    (cherry picked from commit 7afa03963c448a14b1735a10eaf84941b0b74862)
---
 release/powerpc/mkisoimages.sh | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/release/powerpc/mkisoimages.sh b/release/powerpc/mkisoimages.sh
index 705545dead4b..ac02e2513e93 100644
--- a/release/powerpc/mkisoimages.sh
+++ b/release/powerpc/mkisoimages.sh
@@ -75,7 +75,7 @@ if [ -n "$bootable" ]; then
        # Apple boot code
        uudecode -p "`dirname "$0"`/hfs-boot.bz2.uu" | bunzip2 > $BOOTBLOCK
        OFFSET=$(hd $BOOTBLOCK | grep 'Loader START' | cut -f 1 -d ' ')
-       OFFSET=0x$(echo 0x$OFFSET | awk '{printf("%x\n",$1/512);}')
+       OFFSET=$((0x${OFFSET} / 512))
        dd if="$BASEBITSDIR/boot/loader" of=$BOOTBLOCK seek=$OFFSET conv=notrunc
 
        bootable="-o bootimage=macppc;$BOOTBLOCK -o no-emul-boot"

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