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authorLinus Torvalds <torvalds@linux-foundation.org>2022-08-10 10:40:41 -0700
committerLinus Torvalds <torvalds@linux-foundation.org>2022-08-10 10:40:41 -0700
commit0af5cb349a2c97fbabb3cede96efcde9d54b7940 (patch)
tree16a7f2c4eac7d06fab0139d27aa99f5ddef6605f /Makefile
parentd4252071b97d2027d246f6a82cbee4d52f618b47 (diff)
parent672fb6740cbfde34f4d367ffa3c939b608a927e1 (diff)
Merge tag 'kbuild-v5.20' of git://git.kernel.org/pub/scm/linux/kernel/git/masahiroy/linux-kbuild
Pull Kbuild updates from Masahiro Yamada: - Remove the support for -O3 (CONFIG_CC_OPTIMIZE_FOR_PERFORMANCE_O3) - Fix error of rpm-pkg cross-builds - Support riscv for checkstack tool - Re-enable -Wformwat warnings for Clang - Clean up modpost, Makefiles, and misc scripts * tag 'kbuild-v5.20' of git://git.kernel.org/pub/scm/linux/kernel/git/masahiroy/linux-kbuild: (30 commits) modpost: remove .symbol_white_list field entirely modpost: remove unneeded .symbol_white_list initializers modpost: add PATTERNS() helper macro modpost: shorten warning messages in report_sec_mismatch() Revert "Kbuild, lto, workaround: Don't warn for initcall_reference in modpost" modpost: use more reliable way to get fromsec in section_rel(a)() modpost: add array range check to sec_name() modpost: refactor get_secindex() kbuild: set EXIT trap before creating temporary directory modpost: remove unused Elf_Sword macro Makefile.extrawarn: re-enable -Wformat for clang kbuild: add dtbs_prepare target kconfig: Qt5: tell the user which packages are required modpost: use sym_get_data() to get module device_table data modpost: drop executable ELF support checkstack: add riscv support for scripts/checkstack.pl kconfig: shorten the temporary directory name for cc-option scripts: headers_install.sh: Update config leak ignore entries kbuild: error out if $(INSTALL_MOD_PATH) contains % or : kbuild: error out if $(KBUILD_EXTMOD) contains % or : ...
Diffstat (limited to 'Makefile')
-rw-r--r--Makefile18
1 files changed, 12 insertions, 6 deletions
diff --git a/Makefile b/Makefile
index dc6295f91263..60a7e3e8b478 100644
--- a/Makefile
+++ b/Makefile
@@ -129,6 +129,9 @@ endif
$(if $(word 2, $(KBUILD_EXTMOD)), \
$(error building multiple external modules is not supported))
+$(foreach x, % :, $(if $(findstring $x, $(KBUILD_EXTMOD)), \
+ $(error module directory path cannot contain '$x')))
+
# Remove trailing slashes
ifneq ($(filter %/, $(KBUILD_EXTMOD)),)
KBUILD_EXTMOD := $(shell dirname $(KBUILD_EXTMOD).)
@@ -755,8 +758,6 @@ KBUILD_CFLAGS += $(call cc-disable-warning, address-of-packed-member)
ifdef CONFIG_CC_OPTIMIZE_FOR_PERFORMANCE
KBUILD_CFLAGS += -O2
-else ifdef CONFIG_CC_OPTIMIZE_FOR_PERFORMANCE_O3
-KBUILD_CFLAGS += -O3
else ifdef CONFIG_CC_OPTIMIZE_FOR_SIZE
KBUILD_CFLAGS += -Os
endif
@@ -1370,16 +1371,21 @@ endif
ifneq ($(dtstree),)
-%.dtb: include/config/kernel.release scripts_dtc
+%.dtb: dtbs_prepare
$(Q)$(MAKE) $(build)=$(dtstree) $(dtstree)/$@
-%.dtbo: include/config/kernel.release scripts_dtc
+%.dtbo: dtbs_prepare
$(Q)$(MAKE) $(build)=$(dtstree) $(dtstree)/$@
-PHONY += dtbs dtbs_install dtbs_check
-dtbs: include/config/kernel.release scripts_dtc
+PHONY += dtbs dtbs_prepare dtbs_install dtbs_check
+dtbs: dtbs_prepare
$(Q)$(MAKE) $(build)=$(dtstree)
+# include/config/kernel.release is actually needed when installing DTBs because
+# INSTALL_DTBS_PATH contains $(KERNELRELEASE). However, we do not want to make
+# dtbs_install depend on it as dtbs_install may run as root.
+dtbs_prepare: include/config/kernel.release scripts_dtc
+
ifneq ($(filter dtbs_check, $(MAKECMDGOALS)),)
export CHECK_DTBS=y
dtbs: dt_binding_check