forked from mirrors/linux
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>
25 lines
856 B
C
25 lines
856 B
C
/* SPDX-License-Identifier: GPL-2.0-only */
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#ifdef __LINUX_COMPILER_VERSION_H
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#error "Please do not include <linux/compiler-version.h>. This is done by the build system."
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#endif
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#define __LINUX_COMPILER_VERSION_H
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/*
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* This header exists to force full rebuild when the compiler is upgraded.
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*
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* When fixdep scans this, it will find this string "CONFIG_CC_VERSION_TEXT"
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* and add dependency on include/config/CC_VERSION_TEXT, which is touched
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* by Kconfig when the version string from the compiler changes.
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*/
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/* Additional tree-wide dependencies start here. */
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/*
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* If any of the GCC plugins change, we need to rebuild everything that
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* was built with them, as they may have changed their behavior and those
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* behaviors may need to be synchronized across all translation units.
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*/
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#ifdef GCC_PLUGINS
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#include <generated/gcc-plugins.h>
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#endif
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