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Anthony PERARD
2d696fc3d0
Rework dependencies of all objects. We don't need to add dependencies for headers that $(CC) is capable of generating, we only need to include $(DEPS_INCLUDE). Some dependencies are still needed so make knows to generate symlinks for them. We remove the use of "vpath" for cpuid.c. While it works fine for now, when we will convert this makefile to subdirmk, vpath will not be usable. Also, "-iquote" is now needed to build "cpuid.o". Replace "-I." by "-iquote .", so it applies to double-quote includes only. Rather than checking if a symlink exist, always regenerate the symlink. So if the source tree changed location, the symlink is updated. Since we are creating a new .gitignore for the symlink, also move the entry to it. Signed-off-by: Anthony PERARD <anthony.perard@citrix.com> Reviewed-by: Luca Fancellu <luca.fancellu@arm.com> Acked-by: Jan Beulich <jbeulich@suse.com>
# OVERVIEW This directory provides fuzzing targets to be run inside Google oss-fuzz infrastructure. See also https://github.com/google/oss-fuzz. # HOW IT WORKS We need to provide the source code and the rune to produce objects or archives (artefacts) from source code. These items ideally should live inside xen.git so that they can be kept up to date. The artefacts contain all the code we wish to fuzz and a function called LLVMFuzzerTestOneInput. LLVMFuzzerTestOneInput is the entry point to the code we wish to fuzz. Note that we don't produce executable programs because we don't have libFuzzEngine locally. libFuzzEngine is maintained by oss-fuzz. We also provide build script to oss-fuzz. The build script will inherit the correct compiler settings and be run in a pre-setup environment, which has libFuzzEngine installed. The build script is responsible for calling the correct Xen build rune to produce the artefacts, then link them against libFuzzEngine to produce executables, which will run in oss-fuzz infrastructure. Please refer to official oss-fuzz documents for the most up-to-date descriptions for all moving parts. # HOW TO IMPROVE THE FUZZING TARGETS Feel free to modify each fuzzing targets at will. Make sure they build by invoking make as you would build tools. To actually test the new code, you would need to run the target in standalone mode, please refer to oss-fuzz documents on how to do that. It is highly recommended that you run the new target for a while to weed out error in plumbing code to avoid false positives.