optionroms: Silence intermediate file removal

The build process of optionroms spits out an "rm ..." line. Moreover, it
removes all .o files that can be handy for debugging purposes. So
disable automatic intermediate removal.

Signed-off-by: Jan Kiszka <jan.kiszka@siemens.com>
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>

diff --git a/pc-bios/optionrom/Makefile b/pc-bios/optionrom/Makefile
index 51da288e32297b76eb03f71fc3532ce9c0a58f1d..2caf7e6b69298254159805264ea9436631d2bbec 100644 (file)
--- a/pc-bios/optionrom/Makefile
+++ b/pc-bios/optionrom/Makefile
@@ -16,6 +16,9 @@ QEMU_CFLAGS = $(CFLAGS)
 
 build-all: multiboot.bin linuxboot.bin
 
+# suppress auto-removal of intermediate files
+.SECONDARY:
+
 %.img: %.o
        $(call quiet-command,$(LD) -Ttext 0 -e _start -s -o $@ $<,"  Building $(TARGET_DIR)$@")