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git://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
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0cecd37dae
There was no dependency between the plugins changing and the rest of the kernel being built. This could cause strange behaviors as instrumentation could vary between targets depending on when they were built. Generate a new header file, gcc-plugins.h, any time the GCC plugins change. Include the header file in compiler-version.h when its associated feature name, GCC_PLUGINS, is defined. This will be picked up by fixdep and force rebuilds where needed. Add a generic "touch" kbuild command, which will be used again in a following patch. Add a "normalize_path" string helper to make the "TOUCH" output less ugly. Link: https://lore.kernel.org/r/20250503184623.2572355-1-kees@kernel.org Tested-by: Nicolas Schier <n.schier@avm.de> Reviewed-by: Nicolas Schier <n.schier@avm.de> Signed-off-by: Kees Cook <kees@kernel.org>
58 lines
2.4 KiB
Makefile
58 lines
2.4 KiB
Makefile
# SPDX-License-Identifier: GPL-2.0
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gcc-plugin-$(CONFIG_GCC_PLUGIN_LATENT_ENTROPY) += latent_entropy_plugin.so
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gcc-plugin-cflags-$(CONFIG_GCC_PLUGIN_LATENT_ENTROPY) \
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+= -DLATENT_ENTROPY_PLUGIN
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ifdef CONFIG_GCC_PLUGIN_LATENT_ENTROPY
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DISABLE_LATENT_ENTROPY_PLUGIN += -fplugin-arg-latent_entropy_plugin-disable -ULATENT_ENTROPY_PLUGIN
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endif
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export DISABLE_LATENT_ENTROPY_PLUGIN
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gcc-plugin-$(CONFIG_GCC_PLUGIN_STRUCTLEAK) += structleak_plugin.so
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gcc-plugin-cflags-$(CONFIG_GCC_PLUGIN_STRUCTLEAK_VERBOSE) \
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+= -fplugin-arg-structleak_plugin-verbose
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gcc-plugin-cflags-$(CONFIG_GCC_PLUGIN_STRUCTLEAK_BYREF) \
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+= -fplugin-arg-structleak_plugin-byref
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gcc-plugin-cflags-$(CONFIG_GCC_PLUGIN_STRUCTLEAK_BYREF_ALL) \
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+= -fplugin-arg-structleak_plugin-byref-all
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ifdef CONFIG_GCC_PLUGIN_STRUCTLEAK
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DISABLE_STRUCTLEAK_PLUGIN += -fplugin-arg-structleak_plugin-disable
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endif
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export DISABLE_STRUCTLEAK_PLUGIN
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gcc-plugin-cflags-$(CONFIG_GCC_PLUGIN_STRUCTLEAK) \
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+= -DSTRUCTLEAK_PLUGIN
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gcc-plugin-$(CONFIG_GCC_PLUGIN_STACKLEAK) += stackleak_plugin.so
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gcc-plugin-cflags-$(CONFIG_GCC_PLUGIN_STACKLEAK) \
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+= -DSTACKLEAK_PLUGIN
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gcc-plugin-cflags-$(CONFIG_GCC_PLUGIN_STACKLEAK) \
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+= -fplugin-arg-stackleak_plugin-track-min-size=$(CONFIG_STACKLEAK_TRACK_MIN_SIZE)
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gcc-plugin-cflags-$(CONFIG_GCC_PLUGIN_STACKLEAK) \
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+= -fplugin-arg-stackleak_plugin-arch=$(SRCARCH)
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gcc-plugin-cflags-$(CONFIG_GCC_PLUGIN_STACKLEAK_VERBOSE) \
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+= -fplugin-arg-stackleak_plugin-verbose
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ifdef CONFIG_GCC_PLUGIN_STACKLEAK
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DISABLE_STACKLEAK_PLUGIN += -fplugin-arg-stackleak_plugin-disable
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endif
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export DISABLE_STACKLEAK_PLUGIN
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# All the plugin CFLAGS are collected here in case a build target needs to
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# filter them out of the KBUILD_CFLAGS.
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GCC_PLUGINS_CFLAGS := $(strip $(addprefix -fplugin=$(objtree)/scripts/gcc-plugins/, $(gcc-plugin-y)) $(gcc-plugin-cflags-y)) -DGCC_PLUGINS
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export GCC_PLUGINS_CFLAGS
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# Add the flags to the build!
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KBUILD_CFLAGS += $(GCC_PLUGINS_CFLAGS)
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# Some plugins are enabled outside of this Makefile, but they still need to
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# be included in GCC_PLUGIN so they can get built.
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gcc-plugin-external-$(CONFIG_GCC_PLUGIN_SANCOV) \
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+= sancov_plugin.so
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gcc-plugin-external-$(CONFIG_GCC_PLUGIN_RANDSTRUCT) \
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+= randomize_layout_plugin.so
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# All enabled GCC plugins are collected here for building in
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# scripts/gcc-scripts/Makefile.
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GCC_PLUGIN := $(gcc-plugin-y) $(gcc-plugin-external-y)
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export GCC_PLUGIN
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