mirror of
https://github.com/openwrt/openwrt.git
synced 2026-10-13 15:28:21 +04:00
John Crispin
b95b0928ac
Set BUILD_TIME_LOG=<file> to record a begin and an end event for every prepare, configure, compile and install stage of every tool, toolchain component, kernel and package. scripts/build-time-report.pl turns the log into a report. The report divides each second of the build between the stages that run in it, so the numbers show which stages hold up the wall clock rather than which ones burn the most CPU. Nothing is recorded and no extra process runs when BUILD_TIME_LOG is unset. Signed-off-by: John Crispin <john@phrozen.org>
198 lines
6.2 KiB
Makefile
198 lines
6.2 KiB
Makefile
# SPDX-License-Identifier: GPL-2.0-only
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#
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# Copyright (C) 2006-2020 OpenWrt.org
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include $(INCLUDE_DIR)/prereq.mk
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include $(INCLUDE_DIR)/depends.mk
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ifneq ($(DUMP),1)
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all: compile
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endif
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KERNEL_FILE_DEPENDS=$(GENERIC_BACKPORT_DIR) $(GENERIC_PATCH_DIR) $(GENERIC_HACK_DIR) $(PATCH_DIR) $(GENERIC_FILES_DIR) $(FILES_DIR)
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STAMP_PREPARED=$(LINUX_DIR)/.prepared$(if $(QUILT)$(DUMP),,_$(shell $(call $(if $(CONFIG_AUTOREMOVE),find_md5_reproducible,find_md5),$(KERNEL_FILE_DEPENDS),)))
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STAMP_CONFIGURED:=$(LINUX_DIR)/.configured
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include $(INCLUDE_DIR)/download.mk
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include $(INCLUDE_DIR)/quilt.mk
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include $(INCLUDE_DIR)/kernel-defaults.mk
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define Kernel/Prepare
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$(call Kernel/Prepare/Default)
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endef
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define Kernel/Configure
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$(call Kernel/Configure/Default)
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endef
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define Kernel/CompileModules
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$(call Kernel/CompileModules/Default)
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endef
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define Kernel/CompileImage
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$(call Kernel/CompileImage/Default)
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$(call Kernel/CompileImage/Initramfs)
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endef
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define Kernel/Clean
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$(call Kernel/Clean/Default)
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endef
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define Download/kernel
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URL:=$(LINUX_SITE)
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FILE:=$(LINUX_SOURCE)
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HASH:=$(LINUX_KERNEL_HASH)
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endef
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KERNEL_GIT_OPTS:=
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ifneq ($(strip $(CONFIG_KERNEL_GIT_LOCAL_REPOSITORY)),"")
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KERNEL_GIT_OPTS+=--reference $(CONFIG_KERNEL_GIT_LOCAL_REPOSITORY)
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endif
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define Download/git-kernel
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URL:=$(call qstrip,$(CONFIG_KERNEL_GIT_CLONE_URI))
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PROTO:=git
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SOURCE_VERSION:=$(CONFIG_KERNEL_GIT_REF)
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FILE:=$(LINUX_SOURCE)
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SUBDIR:=linux-$(LINUX_VERSION)
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OPTS:=$(KERNEL_GIT_OPTS)
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endef
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ifdef CONFIG_COLLECT_KERNEL_DEBUG
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define Kernel/CollectDebug
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rm -rf $(KERNEL_BUILD_DIR)/debug
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mkdir -p $(KERNEL_BUILD_DIR)/debug/modules
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$(CP) $(LINUX_DIR)/vmlinux $(KERNEL_BUILD_DIR)/debug/
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-$(CP) \
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$(STAGING_DIR_ROOT)/lib/modules/$(LINUX_VERSION)/*.ko \
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$(KERNEL_BUILD_DIR)/debug/modules/
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$(FIND) $(KERNEL_BUILD_DIR)/debug -type f | $(XARGS) $(KERNEL_CROSS)strip --only-keep-debug
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$(TAR) c -C $(KERNEL_BUILD_DIR) debug \
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$(if $(SOURCE_DATE_EPOCH),--mtime="@$(SOURCE_DATE_EPOCH)") \
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| zstd -T0 -f -o $(BIN_DIR)/kernel-debug.tar.zst
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endef
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endif
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ifeq ($(DUMP)$(filter prereq clean refresh update,$(MAKECMDGOALS)),)
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ifneq ($(if $(QUILT),,$(CONFIG_AUTOREBUILD)),)
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define Kernel/Autoclean
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$(PKG_BUILD_DIR)/.dep_files: $(STAMP_PREPARED)
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$(call rdep,$(KERNEL_FILE_DEPENDS),$(STAMP_PREPARED),$(PKG_BUILD_DIR)/.dep_files,-x "*/.dep_*")
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endef
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endif
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endif
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define BuildKernel
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$(if $(QUILT),$(Build/Quilt))
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$(if $(LINUX_SITE),$(call Download,kernel))
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$(if $(call qstrip,$(CONFIG_KERNEL_GIT_CLONE_URI)),$(call Download,git-kernel))
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.NOTPARALLEL:
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$(Kernel/Autoclean)
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$(STAMP_PREPARED): $(if $(LINUX_SITE),$(DL_DIR)/$(LINUX_SOURCE))
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$(call BuildTimeLog,begin,prepare)
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-rm -rf $(KERNEL_BUILD_DIR)
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-mkdir -p $(KERNEL_BUILD_DIR)
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$(Kernel/Prepare)
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touch $$@
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$(call BuildTimeLog,end,prepare)
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$(KERNEL_BUILD_DIR)/symtab.h: FORCE
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$(call BuildTimeLog,begin,compile)
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rm -f $(KERNEL_BUILD_DIR)/symtab.h
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touch $(KERNEL_BUILD_DIR)/symtab.h
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+$(KERNEL_MAKE) vmlinux
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find $(LINUX_DIR) $(STAGING_DIR_ROOT)/lib/modules -name \*.ko | \
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xargs $(TARGET_CROSS)nm | \
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awk '$$$$1 == "U" { print $$$$2 } ' | \
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sort -u > $(KERNEL_BUILD_DIR)/mod_symtab.txt
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$(TARGET_CROSS)nm -n $(LINUX_DIR)/vmlinux.o | awk '/^[0-9a-f]+ [rR] __ksymtab_/ {print substr($$$$3,11)}' > $(KERNEL_BUILD_DIR)/kernel_symtab.txt
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grep -Ff $(KERNEL_BUILD_DIR)/mod_symtab.txt $(KERNEL_BUILD_DIR)/kernel_symtab.txt > $(KERNEL_BUILD_DIR)/sym_include.txt
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grep -Fvf $(KERNEL_BUILD_DIR)/mod_symtab.txt $(KERNEL_BUILD_DIR)/kernel_symtab.txt > $(KERNEL_BUILD_DIR)/sym_exclude.txt
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( \
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echo '#define SYMTAB_KEEP \'; \
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cat $(KERNEL_BUILD_DIR)/sym_include.txt | \
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awk '{print "KEEP(*(___ksymtab+" $$$$1 ")) \\" }'; \
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echo; \
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echo '#define SYMTAB_KEEP_GPL \'; \
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cat $(KERNEL_BUILD_DIR)/sym_include.txt | \
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awk '{print "KEEP(*(___ksymtab_gpl+" $$$$1 ")) \\" }'; \
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echo; \
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echo '#define SYMTAB_DISCARD \'; \
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cat $(KERNEL_BUILD_DIR)/sym_exclude.txt | \
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awk '{print "*(___ksymtab+" $$$$1 ") \\" }'; \
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echo; \
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echo '#define SYMTAB_DISCARD_GPL \'; \
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cat $(KERNEL_BUILD_DIR)/sym_exclude.txt | \
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awk '{print "*(___ksymtab_gpl+" $$$$1 ") \\" }'; \
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echo; \
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) > $$@
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$(call BuildTimeLog,end,compile)
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$(STAMP_CONFIGURED): $(STAMP_PREPARED) $(LINUX_KCONFIG_LIST) $(TOPDIR)/.config FORCE
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$(call BuildTimeLog,begin,configure)
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$(Kernel/Configure)
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touch $$@
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$(call BuildTimeLog,end,configure)
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$(LINUX_DIR)/.modules: export STAGING_PREFIX=$$(STAGING_DIR_HOST)
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$(LINUX_DIR)/.modules: export PKG_CONFIG_PATH=$$(STAGING_DIR_HOST)/lib/pkgconfig
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$(LINUX_DIR)/.modules: export PKG_CONFIG_LIBDIR=$$(STAGING_DIR_HOST)/lib/pkgconfig
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$(LINUX_DIR)/.modules: export FAIL_ON_UNCONFIGURED=1
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$(LINUX_DIR)/.modules: $(STAMP_CONFIGURED) $(LINUX_DIR)/.config FORCE
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$(call BuildTimeLog,begin,compile)
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$(Kernel/CompileModules)
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touch $$@
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$(call BuildTimeLog,end,compile)
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$(LINUX_DIR)/.image: export STAGING_PREFIX=$$(STAGING_DIR_HOST)
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$(LINUX_DIR)/.image: export PKG_CONFIG_PATH=$$(STAGING_DIR_HOST)/lib/pkgconfig
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$(LINUX_DIR)/.image: export PKG_CONFIG_LIBDIR=$$(STAGING_DIR_HOST)/lib/pkgconfig
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$(LINUX_DIR)/.image: $(STAMP_CONFIGURED) $(if $(CONFIG_STRIP_KERNEL_EXPORTS),$(KERNEL_BUILD_DIR)/symtab.h) FORCE
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$(call BuildTimeLog,begin,compile)
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$(Kernel/CompileImage)
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$(Kernel/CollectDebug)
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touch $$@
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$(call BuildTimeLog,end,compile)
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mostlyclean: FORCE
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$(Kernel/Clean)
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define BuildKernel
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endef
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download: $(if $(LINUX_SITE),$(DL_DIR)/$(LINUX_SOURCE))
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prepare: $(STAMP_PREPARED)
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compile: $(LINUX_DIR)/.modules
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+$(MAKE) -C image compile TARGET_BUILD=
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dtb: $(STAMP_CONFIGURED)
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$(_SINGLE)$(KERNEL_MAKE) scripts_dtc
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$(MAKE) -C image compile-dtb TARGET_BUILD=
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oldconfig menuconfig nconfig xconfig: $(STAMP_PREPARED) $(STAMP_CHECKED) FORCE
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rm -f $(LINUX_DIR)/.config.prev
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rm -f $(STAMP_CONFIGURED)
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$(LINUX_RECONF_CMD) > $(LINUX_DIR)/.config
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$(_SINGLE)$(KERNEL_MAKE) \
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$(if $(findstring Darwin,$(HOST_OS)), \
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HOSTLDLIBS_mconf="-L$(STAGING_DIR_HOST)/lib -lncurses" \
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filechk_conf_cfg=" :" \
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) \
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YACC=$(STAGING_DIR_HOST)/bin/bison \
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$$@
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$(call LINUX_RECONF_DIFF,$(LINUX_DIR)/.config) > $(LINUX_RECONFIG_TARGET)
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install: $(LINUX_DIR)/.image
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+$(MAKE) -C image compile install TARGET_BUILD=
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clean: FORCE
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rm -rf $(KERNEL_BUILD_DIR)
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image-prereq:
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@+$(NO_TRACE_MAKE) -s -C image prereq TARGET_BUILD=
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prereq: image-prereq
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endef
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