--- src/VBox/Devices/PC/ipxe/Makefile.kmk.orig	2024-10-10 20:29:25.000000000 +0200
+++ src/VBox/Devices/PC/ipxe/Makefile.kmk	2024-12-27 13:50:35.036241000 +0100
@@ -45,7 +45,7 @@
 iPxeBiosBin_CLEAN    = \
 	$(iPxeBiosBin_0_OUTDIR)/iPxeBiosBin.c \
 
-if1of ($(KBUILD_TARGET), darwin os2 solaris win)
+if1of ($(KBUILD_TARGET), darwin os2 solaris win linux freebsd)
  $$(iPxeBiosBin_0_OUTDIR)/iPxeBiosBin.c: $(PATH_SUB_CURRENT)/iPxeBiosBin.rom $(VBOX_BIN2C) | $$(dir $$@)
 	$(call MSG_TOOL,bin2c,iPxeBiosBin,$<,$@)
 	$(QUIET)$(VBOX_BIN2C) -min 32 -max 56 -mask 0x1ff -export NetBiosBinary $< $@
@@ -131,7 +131,7 @@
 	-falign-loops=1 \
 	-Os \
 	-falign-functions=1 \
-	-mpreferred-stack-boundary=2 \
+	-mstack-alignment=2 \
 	-mregparm=3 \
 	-mrtd \
 	-freg-struct-return \
@@ -154,7 +154,7 @@
 	-falign-jumps=1 \
 	-falign-loops=1 \
 	-falign-functions=1 \
-	-mpreferred-stack-boundary=2 \
+	-mstack-alignment=2 \
 	-mregparm=3 \
 	-mrtd \
 	-freg-struct-return \