diff options
Diffstat (limited to 'Makefile')
| -rw-r--r-- | Makefile | 51 |
1 files changed, 31 insertions, 20 deletions
@@ -1,7 +1,7 @@ # SPDX-License-Identifier: GPL-2.0 VERSION = 6 -PATCHLEVEL = 7 -SUBLEVEL = 12 +PATCHLEVEL = 8 +SUBLEVEL = 9 EXTRAVERSION = NAME = Hurr durr I'ma ninja sloth @@ -155,6 +155,15 @@ endif export KBUILD_EXTMOD +# backward compatibility +KBUILD_EXTRA_WARN ?= $(KBUILD_ENABLE_EXTRA_GCC_CHECKS) + +ifeq ("$(origin W)", "command line") + KBUILD_EXTRA_WARN := $(W) +endif + +export KBUILD_EXTRA_WARN + # Kbuild will save output files in the current working directory. # This does not need to match to the root of the kernel source tree. # @@ -181,14 +190,11 @@ ifeq ("$(origin O)", "command line") endif ifneq ($(KBUILD_OUTPUT),) -# Make's built-in functions such as $(abspath ...), $(realpath ...) cannot -# expand a shell special character '~'. We use a somewhat tedious way here. -abs_objtree := $(shell mkdir -p $(KBUILD_OUTPUT) && cd $(KBUILD_OUTPUT) && pwd) -$(if $(abs_objtree),, \ - $(error failed to create output directory "$(KBUILD_OUTPUT)")) - +# $(realpath ...) gets empty if the path does not exist. Run 'mkdir -p' first. +$(shell mkdir -p "$(KBUILD_OUTPUT)") # $(realpath ...) resolves symlinks -abs_objtree := $(realpath $(abs_objtree)) +abs_objtree := $(realpath $(KBUILD_OUTPUT)) +$(if $(abs_objtree),,$(error failed to create output directory "$(KBUILD_OUTPUT)")) endif # ifneq ($(KBUILD_OUTPUT),) ifneq ($(words $(subst :, ,$(abs_srctree))), 1) @@ -288,15 +294,15 @@ may-sync-config := 1 single-build := ifneq ($(filter $(no-dot-config-targets), $(MAKECMDGOALS)),) - ifeq ($(filter-out $(no-dot-config-targets), $(MAKECMDGOALS)),) + ifeq ($(filter-out $(no-dot-config-targets), $(MAKECMDGOALS)),) need-config := - endif + endif endif ifneq ($(filter $(no-sync-config-targets), $(MAKECMDGOALS)),) - ifeq ($(filter-out $(no-sync-config-targets), $(MAKECMDGOALS)),) + ifeq ($(filter-out $(no-sync-config-targets), $(MAKECMDGOALS)),) may-sync-config := - endif + endif endif need-compiler := $(may-sync-config) @@ -317,9 +323,9 @@ endif # We cannot build single targets and the others at the same time ifneq ($(filter $(single-targets), $(MAKECMDGOALS)),) single-build := 1 - ifneq ($(filter-out $(single-targets), $(MAKECMDGOALS)),) + ifneq ($(filter-out $(single-targets), $(MAKECMDGOALS)),) mixed-build := 1 - endif + endif endif # For "make -j clean all", "make -j mrproper defconfig all", etc. @@ -609,8 +615,6 @@ export KBUILD_AFLAGS_KERNEL KBUILD_CFLAGS_KERNEL KBUILD_RUSTFLAGS_KERNEL export RCS_FIND_IGNORE := \( -name SCCS -o -name BitKeeper -o -name .svn -o \ -name CVS -o -name .pc -o -name .hg -o -name .git \) \ -prune -o -export RCS_TAR_IGNORE := --exclude SCCS --exclude BitKeeper --exclude .svn \ - --exclude CVS --exclude .pc --exclude .hg --exclude .git # =========================================================================== # Rules shared between *config targets and build targets @@ -982,6 +986,10 @@ NOSTDINC_FLAGS += -nostdinc # perform bounds checking. KBUILD_CFLAGS += $(call cc-option, -fstrict-flex-arrays=3) +#Currently, disable -Wstringop-overflow for GCC 11, globally. +KBUILD_CFLAGS-$(CONFIG_CC_NO_STRINGOP_OVERFLOW) += $(call cc-option, -Wno-stringop-overflow) +KBUILD_CFLAGS-$(CONFIG_CC_STRINGOP_OVERFLOW) += $(call cc-option, -Wstringop-overflow) + # disable invalid "can't wrap" optimizations for signed / pointers KBUILD_CFLAGS += -fno-strict-overflow @@ -1576,7 +1584,8 @@ help: echo ' (default: $(INSTALL_HDR_PATH))'; \ echo '' @echo 'Static analysers:' - @echo ' checkstack - Generate a list of stack hogs' + @echo ' checkstack - Generate a list of stack hogs and consider all functions' + @echo ' with a stack size larger than MINSTACKSIZE (default: 100)' @echo ' versioncheck - Sanity check on version.h usage' @echo ' includecheck - Check for duplicate included header files' @echo ' export_report - List the usages of all exported symbols' @@ -1657,10 +1666,11 @@ help: @echo ' (sparse by default)' @echo ' make C=2 [targets] Force check of all c source with $$CHECK' @echo ' make RECORDMCOUNT_WARN=1 [targets] Warn about ignored mcount sections' - @echo ' make W=n [targets] Enable extra build checks, n=1,2,3 where' + @echo ' make W=n [targets] Enable extra build checks, n=1,2,3,c,e where' @echo ' 1: warnings which may be relevant and do not occur too often' @echo ' 2: warnings which occur quite often but may still be relevant' @echo ' 3: more obscure warnings, can most likely be ignored' + @echo ' c: extra checks in the configuration stage (Kconfig)' @echo ' e: warnings are being treated as errors' @echo ' Multiple levels can be combined with W=12 or W=123' @$(if $(dtstree), \ @@ -2016,9 +2026,10 @@ CHECKSTACK_ARCH := $(SUBARCH) else CHECKSTACK_ARCH := $(ARCH) endif +MINSTACKSIZE ?= 100 checkstack: $(OBJDUMP) -d vmlinux $$(find . -name '*.ko') | \ - $(PERL) $(srctree)/scripts/checkstack.pl $(CHECKSTACK_ARCH) + $(PERL) $(srctree)/scripts/checkstack.pl $(CHECKSTACK_ARCH) $(MINSTACKSIZE) kernelrelease: @$(filechk_kernel.release) |