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kbuild: always run 'make silentoldconfig' when tree is cleaned
If the file .kconfig.d is missing then make sure to run 'make silentoldconfig', since we have no way to detect if a Kconfig file has been updated. -kconfig.d is created by kconfig and is removed as part of 'make clean' so the situation is likely to occur in reality. Jan Beulich <JBeulich@novell.com> reported this bug. Signed-off-by: Sam Ravnborg <sam@ravnborg.org>
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10
Makefile
10
Makefile
@ -477,18 +477,20 @@ ifeq ($(dot-config),1)
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# Read in dependencies to all Kconfig* files, make sure to run
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# oldconfig if changes are detected.
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-include .config.cmd
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-include .kconfig.d
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include .config
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# If .config needs to be updated, it will be done via the dependency
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# that autoconf has on .config.
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# To avoid any implicit rule to kick in, define an empty command
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.config: ;
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.config .kconfig.d: ;
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# If .config is newer than include/linux/autoconf.h, someone tinkered
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# with it and forgot to run make oldconfig
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include/linux/autoconf.h: .config
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# with it and forgot to run make oldconfig.
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# If kconfig.d is missing then we are probarly in a cleaned tree so
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# we execute the config step to be sure to catch updated Kconfig files
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include/linux/autoconf.h: .kconfig.d .config
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$(Q)mkdir -p include/linux
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$(Q)$(MAKE) -f $(srctree)/Makefile silentoldconfig
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else
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@ -33,7 +33,7 @@ int file_write_dep(const char *name)
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FILE *out;
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if (!name)
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name = ".config.cmd";
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name = ".kconfig.d";
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out = fopen("..config.tmp", "w");
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if (!out)
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return 1;
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