On Mon, Nov 17, 2025 at 11:27 AM David Matlack [off-list ref] wrote:

Putting it all together, here is what I'd recommend for this Makefile
(drop-in replacement for the current Makefile). This will also make it
easier for me to share the library code with VFIO selftests, which
I'll need to do in the VFIO series.

(Sorry in advance for the line wrap. I had to send this through gmail.)

Oops I dropped the build rule for liveupdate.c. Here it is with that included:

# SPDX-License-Identifier: GPL-2.0-only

LIBLIVEUPDATE_C += luo_test_utils.c

TEST_GEN_PROGS += liveupdate
TEST_GEN_PROGS_EXTENDED += luo_kexec_simple
TEST_GEN_PROGS_EXTENDED += luo_multi_session

TEST_FILES += do_kexec.sh

include ../lib.mk

CFLAGS += $(KHDR_INCLUDES)
CFLAGS += -Wall -O2 -Wno-unused-function
CFLAGS += -MD
CFLAGS += $(EXTRA_CFLAGS)

LIBLIVEUPDATE_O := $(patsubst %.c, $(OUTPUT)/%.o, $(LIBLIVEUPDATE_C))
TEST_PROGS := $(TEST_GEN_PROGS) $(TEST_GEN_PROGS_EXTENDED)
TEST_PROGS_O := $(patsubst %, %.o, $(TEST_PROGS))

TEST_DEP_FILES += $(patsubst %.o, %.d, $(LIBLIVEUPDATE_O))
TEST_DEP_FILES += $(patsubst %.o, %.d, $(TEST_PROGS_O))
-include $(TEST_DEP_FILES)

$(LIBLIVEUPDATE_O): $(OUTPUT)/%.o: %.c
        $(CC) $(CFLAGS) $(CPPFLAGS) $(TARGET_ARCH) -c $< -o $@

$(TEST_PROGS): %: %.o $(LIBLIVEUPDATE_O)
        $(CC) $(CFLAGS) $(CPPFLAGS) $(LDFLAGS) $(TARGET_ARCH) $<
$(LIBLIVEUPDATE_O) $(LDLIBS) -o $@

EXTRA_CLEAN += $(LIBLIVEUPDATE_O)
EXTRA_CLEAN += $(TEST_PROGS_O)
EXTRA_CLEAN += $(TEST_DEP_FILES)