[xen staging] tools/fuzz/libelf: rework makefile

[patchbot@xxxxxxx]

commit ee3810899181170d21ab2c4e1aeba8dcdcd6f2b6
Author:     Anthony PERARD <anthony.perard@xxxxxxxxxx>
AuthorDate: Tue Jul 12 08:35:48 2022 +0200
Commit:     Jan Beulich <jbeulich@xxxxxxxx>
CommitDate: Tue Jul 12 08:36:37 2022 +0200

    tools/fuzz/libelf: rework makefile
    
    Rename ELF_LIB_OBJS to LIBELF_OBJS as to have the same name as in
    libs/guest/.
    
    Replace "-I" by "-iquote".
    
    Remove the use of "vpath". It will not works when we will convert this
    makefile to subdirmk. Instead, we create symlinks to the source files.
    
    Since we are creating a new .gitignore for the links, also move the
    existing entry to it.
    
    Signed-off-by: Anthony PERARD <anthony.perard@xxxxxxxxxx>
    Reviewed-by: Luca Fancellu <luca.fancellu@xxxxxxx>
---
 .gitignore                   |  1 -
 tools/fuzz/libelf/.gitignore |  2 ++
 tools/fuzz/libelf/Makefile   | 21 ++++++++++-----------
 3 files changed, 12 insertions(+), 12 deletions(-)

diff --git a/.gitignore b/.gitignore
index 4729911c51..ed7bd8bdc7 100644
--- a/.gitignore
+++ b/.gitignore
@@ -195,7 +195,6 @@ tools/flask/utils/flask-loadpolicy
 tools/flask/utils/flask-setenforce
 tools/flask/utils/flask-set-bool
 tools/flask/utils/flask-label-pci
-tools/fuzz/libelf/afl-libelf-fuzzer
 tools/fuzz/x86_instruction_emulator/asm
 tools/fuzz/x86_instruction_emulator/afl-harness
 tools/fuzz/x86_instruction_emulator/afl-harness-cov
diff --git a/tools/fuzz/libelf/.gitignore b/tools/fuzz/libelf/.gitignore
new file mode 100644
index 0000000000..ed634214c9
--- /dev/null
+++ b/tools/fuzz/libelf/.gitignore
@@ -0,0 +1,2 @@
+/afl-libelf-fuzzer
+/libelf-*.c
diff --git a/tools/fuzz/libelf/Makefile b/tools/fuzz/libelf/Makefile
index 9eb30ee40c..9211f75951 100644
--- a/tools/fuzz/libelf/Makefile
+++ b/tools/fuzz/libelf/Makefile
@@ -1,25 +1,24 @@
 XEN_ROOT = $(CURDIR)/../../..
 include $(XEN_ROOT)/tools/Rules.mk
 
-# libelf fuzz target
-vpath %.c ../../../xen/common/libelf
-CFLAGS += -I../../../xen/common/libelf
-ELF_SRCS-y += libelf-tools.c libelf-loader.c libelf-dominfo.c
-ELF_LIB_OBJS := $(patsubst %.c,%.o,$(ELF_SRCS-y))
+LIBELF_OBJS := libelf-tools.o libelf-loader.o libelf-dominfo.o
 
-$(patsubst %.c,%.o,$(ELF_SRCS-y)): CFLAGS += -Wno-pointer-sign
-
-$(ELF_LIB_OBJS): CFLAGS += -DFUZZ_NO_LIBXC $(CFLAGS_xeninclude)
+CFLAGS += -iquote ../../../xen/common/libelf
+$(LIBELF_OBJS): CFLAGS += -Wno-pointer-sign
+$(LIBELF_OBJS): CFLAGS += -DFUZZ_NO_LIBXC $(CFLAGS_xeninclude)
 
 libelf-fuzzer.o: CFLAGS += $(CFLAGS_xeninclude)
 
-libelf.a: libelf-fuzzer.o $(ELF_LIB_OBJS)
+$(LIBELF_OBJS:.o=.c): libelf-%.c: ../../../xen/common/libelf/libelf-%.c FORCE
+       ln -nsf $< $@
+
+libelf.a: libelf-fuzzer.o $(LIBELF_OBJS)
        $(AR) rc $@ $^
 
 .PHONY: libelf-fuzzer-all
 libelf-fuzzer-all: libelf.a libelf-fuzzer.o
 
-afl-libelf-fuzzer: afl-libelf-fuzzer.o libelf-fuzzer.o $(ELF_LIB_OBJS)
+afl-libelf-fuzzer: afl-libelf-fuzzer.o libelf-fuzzer.o $(LIBELF_OBJS)
        $(CC) $(CFLAGS) $^ -o $@
 
 # Common targets
@@ -31,7 +30,7 @@ distclean: clean
 
 .PHONY: clean
 clean:
-       rm -f *.o .*.d *.a *-libelf-fuzzer
+       rm -f *.o .*.d *.a *-libelf-fuzzer $(LIBELF_OBJS:.o=.c)
 
 .PHONY: install
 install: all
--
generated by git-patchbot for /home/xen/git/xen.git#staging