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r-highlight'> Since GNU Make 4.2, $(file ...) supports the read operater '<', which is useful to read a file without forking a new process. No warning is shown even if the input file is missing. For older Make versions, it falls back to the cat command. Signed-off-by: Masahiro Yamada <masahiroy@kernel.org> Reviewed-by: Nicolas Schier <nicolas@fjasle.eu> Reviewed-by: Alexander Lobakin <alexandr.lobakin@intel.com> Tested-by: Alexander Lobakin <alexandr.lobakin@intel.com> 2022-12-13kbuild: do not sort after reading modules.orderMasahiro Yamada modules.order lists modules in the deterministic order (that is why "modules order"), and there is no duplication in the list. $(sort ) is pointless. Signed-off-by: Masahiro Yamada <masahiroy@kernel.org> Reviewed-by: Nicolas Schier <nicolas@fjasle.eu> 2022-07-27kbuild: error out if $(INSTALL_MOD_PATH) contains % or :Masahiro Yamada If the directory path given to INSTALL_MOD_PATH contains % or :, the module_install fails. % is used in pattern rules, and : as the separator of dependencies. Bail out with a clearer error message. Signed-off-by: Masahiro Yamada <masahiroy@kernel.org> Reviewed-by: Nicolas Schier <n.schier@avm.de> 2022-07-10kbuild: remove unused cmd_none in scripts/Makefile.modinstMasahiro Yamada Commit 65ce9c38326e ("kbuild: move module strip/compression code into scripts/Makefile.modinst") added this unused code. Perhaps, I thought cmd_none was useful for CONFIG_MODULE_COMPRESS_NONE, but I did not use it after all. Signed-off-by: Masahiro Yamada <masahiroy@kernel.org> Reviewed-by: Nick Desaulniers <ndesaulniers@google.com> 2022-01-08kbuild: do not quote string values in include/config/auto.confMasahiro Yamada The previous commit fixed up all shell scripts to not include include/config/auto.conf. Now that include/config/auto.conf is only included by Makefiles, we can change it into a more Make-friendly form. Previously, Kconfig output string values enclosed with double-quotes (both in the .config and include/config/auto.conf): CONFIG_X="foo bar" Unlike shell, Make handles double-quotes (and single-quotes as well) verbatim. We must rip them off when used. There are some patterns: [1] $(patsubst "%",%,$(CONFIG_X)) [2] $(CONFIG_X:"%"=%) [3] $(subst ",,$(CONFIG_X)) [4] $(shell echo $(CONFIG_X)) These are not only ugly, but also fragile. [1] and [2] do not work if the value contains spaces, like CONFIG_X=" foo bar " [3] does not work correctly if the value contains double-quotes like CONFIG_X="foo\"bar" [4] seems to work better, but has a cost of forking a process. Anyway, quoted strings were always PITA for our Makefiles. This commit changes Kconfig to stop quoting in include/config/auto.conf. These are the string type symbols referenced in Makefiles or scripts: ACPI_CUSTOM_DSDT_FILE ARC_BUILTIN_DTB_NAME ARC_TUNE_MCPU BUILTIN_DTB_SOURCE CC_IMPLICIT_FALLTHROUGH CC_VERSION_TEXT CFG80211_EXTRA_REGDB_KEYDIR EXTRA_FIRMWARE EXTRA_FIRMWARE_DIR EXTRA_TARGETS H8300_BUILTIN_DTB INITRAMFS_SOURCE LOCALVERSION MODULE_SIG_HASH MODULE_SIG_KEY NDS32_BUILTIN_DTB NIOS2_DTB_SOURCE OPENRISC_BUILTIN_DTB SOC_CANAAN_K210_DTB_SOURCE SYSTEM_BLACKLIST_HASH_LIST SYSTEM_REVOCATION_KEYS SYSTEM_TRUSTED_KEYS TARGET_CPU UNUSED_KSYMS_WHITELIST XILINX_MICROBLAZE0_FAMILY XILINX_MICROBLAZE0_HW_VER XTENSA_VARIANT_NAME I checked them one by one, and fixed up the code where necessary. Signed-off-by: Masahiro Yamada <masahiroy@kernel.org> 2022-01-08kbuild: stop using config_filename in scripts/Makefile.modsignMasahiro Yamada Toward the goal of removing the config_filename macro, drop the double-quotes and add $(srctree)/ prefix in an ad hoc way. Signed-off-by: Masahiro Yamada <masahiroy@kernel.org> Reviewed-by: Nicolas Schier <n.schier@avm.de> 2021-04-25kbuild: add support for zstd compressed modulesPiotr Gorski kmod 28 supports modules compressed in zstd format so let's add this possibility to kernel. Signed-off-by: Piotr Gorski <lucjan.lucjanov@gmail.com> Reviewed-by: Oleksandr Natalenko <oleksandr@natalenko.name> Signed-off-by: Masahiro Yamada <masahiroy@kernel.org> 2021-04-25kbuild: merge scripts/Makefile.modsign to scripts/Makefile.modinstMasahiro Yamada scripts/Makefile.modsign is a subset of scripts/Makefile.modinst, and duplicates the code. Let's merge them. By the way, you do not need to run 'make modules_sign' explicitly because modules are signed as a part of 'make modules_install' when CONFIG_MODULE_SIG_ALL=y. If CONFIG_MODULE_SIG_ALL=n, mod_sign_cmd is set to 'true', so 'make modules_sign' is not functional. In my understanding, the reason of still keeping this is to handle corner cases like commit 64178cb62c32 ("builddeb: fix stripped module signatures if CONFIG_DEBUG_INFO and CONFIG_MODULE_SIG_ALL are set"). Signed-off-by: Masahiro Yamada <masahiroy@kernel.org> 2021-04-25kbuild: move module strip/compression code into scripts/Makefile.modinstMasahiro Yamada Both mod_strip_cmd and mod_compress_cmd are only used in scripts/Makefile.modinst, hence there is no good reason to define them in the top Makefile. Move the relevant code to scripts/Makefile.modinst. Also, show separate log messages for each of install, strip, sign, and compress. Signed-off-by: Masahiro Yamada <masahiroy@kernel.org> 2021-04-25kbuild: refactor scripts/Makefile.modinstMasahiro Yamada scripts/Makefile.modinst is ugly and weird in multiple ways; it specifies real files $(modules) as phony, makes directory manipulation needlessly too complicated. Clean up the Makefile code, and show the full path of installed modules in the log. Signed-off-by: Masahiro Yamada <masahiroy@kernel.org> 2021-03-15kbuild: prefix $(srctree)/ to some included MakefilesMasahiro Yamada VPATH is used in Kbuild to make pattern rules search for prerequisites in both $(objtree) and $(srctree). Some of *.c, *.S files are not real sources, but generated by tools such as flex, bison, perl. In contrast, I doubt the benefit of --include-dir=$(abs_srctree) because it is always clear which Makefiles are real sources, and which are not. So, my hope is to add $(srctree)/ prefix to all check-in Makefiles, then remove --include-dir=$(abs_srctree) flag in the future. I am touching only some Kbuild core parts for now. Treewide fixes will be needed to achieve this goal. Signed-off-by: Masahiro Yamada <masahiroy@kernel.org> 2019-07-17kbuild: modinst: read modules.order instead of $(MODVERDIR)/*.modMasahiro Yamada Towards the goal of removing MODVERDIR, read out modules.order to get the list of modules to be installed. This is simpler than parsing *.mod files in $(MODVERDIR). For external modules, $(KBUILD_EXTMOD)/modules.order should be read. Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>