diff options
Diffstat (limited to 'Makefile')
| -rw-r--r-- | Makefile | 96 |
1 files changed, 72 insertions, 24 deletions
diff --git a/Makefile b/Makefile index 6c3da3e10f07c..bce41f4180fcb 100644 --- a/Makefile +++ b/Makefile @@ -2,8 +2,8 @@ VERSION = 4 PATCHLEVEL = 19 SUBLEVEL = 0 -EXTRAVERSION = -rc6 -NAME = Merciless Moray +EXTRAVERSION = +NAME = "People's Front" # *DOCUMENTATION* # To see a list of typical targets execute "make help" @@ -15,10 +15,9 @@ NAME = Merciless Moray PHONY := _all _all: -# o Do not use make's built-in rules and variables -# (this increases performance and avoids hard-to-debug behaviour); -# o Look for make include files relative to root of kernel src -MAKEFLAGS += -rR --include-dir=$(CURDIR) +# Do not use make's built-in rules and variables +# (this increases performance and avoids hard-to-debug behaviour) +MAKEFLAGS += -rR # Avoid funny character set dependencies unexport LC_ALL @@ -136,6 +135,13 @@ KBUILD_OUTPUT := $(shell mkdir -p $(KBUILD_OUTPUT) && cd $(KBUILD_OUTPUT) \ $(if $(KBUILD_OUTPUT),, \ $(error failed to create output directory "$(saved-output)")) +# Look for make include files relative to root of kernel src +# +# This does not become effective immediately because MAKEFLAGS is re-parsed +# once after the Makefile is read. It is OK since we are going to invoke +# 'sub-make' below. +MAKEFLAGS += --include-dir=$(CURDIR) + PHONY += $(MAKECMDGOALS) sub-make $(filter-out _all sub-make $(CURDIR)/Makefile, $(MAKECMDGOALS)) _all: sub-make @@ -476,20 +482,21 @@ PHONY += outputmakefile outputmakefile: ifneq ($(KBUILD_SRC),) $(Q)ln -fsn $(srctree) source - $(Q)$(CONFIG_SHELL) $(srctree)/scripts/mkmakefile \ - $(srctree) $(objtree) $(VERSION) $(PATCHLEVEL) + $(Q)$(CONFIG_SHELL) $(srctree)/scripts/mkmakefile $(srctree) endif -ifeq ($(cc-name),clang) +ifneq ($(shell $(CC) --version 2>&1 | head -n 1 | grep clang),) ifneq ($(CROSS_COMPILE),) CLANG_TARGET := --target=$(notdir $(CROSS_COMPILE:%-=%)) -GCC_TOOLCHAIN := $(realpath $(dir $(shell which $(LD)))/..) +GCC_TOOLCHAIN_DIR := $(dir $(shell which $(LD))) +CLANG_PREFIX := --prefix=$(GCC_TOOLCHAIN_DIR) +GCC_TOOLCHAIN := $(realpath $(GCC_TOOLCHAIN_DIR)/..) endif ifneq ($(GCC_TOOLCHAIN),) CLANG_GCC_TC := --gcc-toolchain=$(GCC_TOOLCHAIN) endif -KBUILD_CFLAGS += $(CLANG_TARGET) $(CLANG_GCC_TC) -KBUILD_AFLAGS += $(CLANG_TARGET) $(CLANG_GCC_TC) +KBUILD_CFLAGS += $(CLANG_TARGET) $(CLANG_GCC_TC) $(CLANG_PREFIX) +KBUILD_AFLAGS += $(CLANG_TARGET) $(CLANG_GCC_TC) $(CLANG_PREFIX) KBUILD_CFLAGS += $(call cc-option, -no-integrated-as) KBUILD_AFLAGS += $(call cc-option, -no-integrated-as) endif @@ -695,7 +702,7 @@ stackp-flags-$(CONFIG_STACKPROTECTOR_STRONG) := -fstack-protector-strong KBUILD_CFLAGS += $(stackp-flags-y) -ifeq ($(cc-name),clang) +ifdef CONFIG_CC_IS_CLANG KBUILD_CPPFLAGS += $(call cc-option,-Qunused-arguments,) KBUILD_CFLAGS += $(call cc-disable-warning, format-invalid-specifier) KBUILD_CFLAGS += $(call cc-disable-warning, gnu) @@ -711,7 +718,7 @@ else # These warnings generated too much noise in a regular build. # Use make W=1 to enable them (see scripts/Makefile.extrawarn) -KBUILD_CFLAGS += $(call cc-disable-warning, unused-but-set-variable) +KBUILD_CFLAGS += -Wno-unused-but-set-variable endif KBUILD_CFLAGS += $(call cc-disable-warning, unused-const-variable) @@ -792,10 +799,13 @@ endif NOSTDINC_FLAGS += -nostdinc -isystem $(shell $(CC) -print-file-name=include) # warn about C99 declaration after statement -KBUILD_CFLAGS += $(call cc-option,-Wdeclaration-after-statement,) +KBUILD_CFLAGS += -Wdeclaration-after-statement + +# Variable Length Arrays (VLAs) should not be used anywhere in the kernel +KBUILD_CFLAGS += $(call cc-option,-Wvla) # disable pointer signed / unsigned warnings in gcc 4.0 -KBUILD_CFLAGS += $(call cc-disable-warning, pointer-sign) +KBUILD_CFLAGS += -Wno-pointer-sign # disable stringop warnings in gcc 8+ KBUILD_CFLAGS += $(call cc-disable-warning, stringop-truncation) @@ -1061,7 +1071,7 @@ include/config/kernel.release: $(srctree)/Makefile FORCE # Carefully list dependencies so we do not try to build scripts twice # in parallel PHONY += scripts -scripts: scripts_basic asm-generic gcc-plugins $(autoksyms_h) +scripts: scripts_basic scripts_dtc asm-generic gcc-plugins $(autoksyms_h) $(Q)$(MAKE) $(build)=$(@) # Things we need to do before we recursively start building the kernel @@ -1071,7 +1081,7 @@ scripts: scripts_basic asm-generic gcc-plugins $(autoksyms_h) # version.h and scripts_basic is processed / created. # Listed in dependency order -PHONY += prepare archprepare prepare0 prepare1 prepare2 prepare3 +PHONY += prepare archprepare macroprepare prepare0 prepare1 prepare2 prepare3 # prepare3 is used to check if we are building in a separate output directory, # and if so do: @@ -1094,7 +1104,9 @@ prepare2: prepare3 outputmakefile asm-generic prepare1: prepare2 $(version_h) $(autoksyms_h) include/generated/utsrelease.h $(cmd_crmodverdir) -archprepare: archheaders archscripts prepare1 scripts_basic +macroprepare: prepare1 archmacros + +archprepare: archheaders archscripts macroprepare scripts_basic prepare0: archprepare gcc-plugins $(Q)$(MAKE) $(build)=. @@ -1162,6 +1174,9 @@ archheaders: PHONY += archscripts archscripts: +PHONY += archmacros +archmacros: + PHONY += __headers __headers: $(version_h) scripts_basic uapi-asm-generic archheaders archscripts $(Q)$(MAKE) $(build)=scripts build_unifdef @@ -1206,6 +1221,35 @@ kselftest-merge: +$(Q)$(MAKE) -f $(srctree)/Makefile olddefconfig # --------------------------------------------------------------------------- +# Devicetree files + +ifneq ($(wildcard $(srctree)/arch/$(SRCARCH)/boot/dts/),) +dtstree := arch/$(SRCARCH)/boot/dts +endif + +ifneq ($(dtstree),) + +%.dtb: prepare3 scripts_dtc + $(Q)$(MAKE) $(build)=$(dtstree) $(dtstree)/$@ + +PHONY += dtbs dtbs_install +dtbs: prepare3 scripts_dtc + $(Q)$(MAKE) $(build)=$(dtstree) + +dtbs_install: + $(Q)$(MAKE) $(dtbinst)=$(dtstree) + +ifdef CONFIG_OF_EARLY_FLATTREE +all: dtbs +endif + +endif + +PHONY += scripts_dtc +scripts_dtc: scripts_basic + $(Q)$(MAKE) $(build)=scripts/dtc + +# --------------------------------------------------------------------------- # Modules ifdef CONFIG_MODULES @@ -1414,6 +1458,12 @@ help: @echo ' kselftest-merge - Merge all the config dependencies of kselftest to existing' @echo ' .config.' @echo '' + @$(if $(dtstree), \ + echo 'Devicetree:'; \ + echo '* dtbs - Build device tree blobs for enabled boards'; \ + echo ' dtbs_install - Install dtbs to $(INSTALL_DTBS_PATH)'; \ + echo '') + @echo 'Userspace tools targets:' @echo ' use "make tools/help"' @echo ' or "cd tools; make help"' @@ -1605,9 +1655,6 @@ namespacecheck: export_report: $(PERL) $(srctree)/scripts/export_report.pl -endif #ifeq ($(config-targets),1) -endif #ifeq ($(mixed-targets),1) - PHONY += checkstack kernelrelease kernelversion image_name # UML needs a little special treatment here. It wants to use the host @@ -1714,14 +1761,15 @@ cmd_crmodverdir = $(Q)mkdir -p $(MODVERDIR) \ $(if $(KBUILD_MODULES),; rm -f $(MODVERDIR)/*) # read all saved command lines - -cmd_files := $(wildcard .*.cmd $(foreach f,$(sort $(targets)),$(dir $(f)).$(notdir $(f)).cmd)) +cmd_files := $(wildcard .*.cmd) ifneq ($(cmd_files),) $(cmd_files): ; # Do not try to update included dependency files include $(cmd_files) endif +endif # ifeq ($(config-targets),1) +endif # ifeq ($(mixed-targets),1) endif # skip-makefile PHONY += FORCE |