To list the compilation units compiled by the current configuration the scripts/Makefile.list can be executed. It supports: - printing of all compilation units - all directories considered for compilation units - test if a given file is compiled by the configuration - use a different auto.conf Signed-off-by: Christian Dietrich <christian.dietrich@xxxxxxxxxxxxxxxxxxxxxxxxxx> --- Hi, the following patch is a result of our research work at VAMOS[1], where we try to examine the perconditions under which a file is compiled into the linux kernel. While working on this, we needed a way to get all compilation units, which are compiled with the current configuration. And since this might be useful for others, I think it would be great to have this possibility in the mainline kernel. chris [1] http://vamos.informatik.uni-erlangen.de scripts/Makefile.list | 48 ++++++++++++++++++++++ scripts/Makefile.list_recursion | 83 +++++++++++++++++++++++++++++++++++++++ 2 files changed, 131 insertions(+), 0 deletions(-) create mode 100644 scripts/Makefile.list create mode 100644 scripts/Makefile.list_recursion diff --git a/scripts/Makefile.list b/scripts/Makefile.list new file mode 100644 index 0000000..725500b --- /dev/null +++ b/scripts/Makefile.list @@ -0,0 +1,48 @@ +# -*- mode: makefile -*-# +#=============================================== +# Listing files compiled by current configuration +# +# For retrieving a list of files compiled into the kernel with the current +# configuration use (in a kernel source tree) +# - make -f scripts/Makefile.list +# options: +# print_files - print all compiles files (default: "y") +# print_dirs - print all directories considered for compilation (default: "") +# +# If you want to check if a file is compiled by the current configuration +# - make -f scripts/Makefile.list compiled=kernel/sched.c +# +# You can also override, which auto.conf should be loaded, when the source +# tree is traversed +# - make -f scripts/Makefile.list auto_conf=another/path/to/auto.conf + +list: + +# We include the main Makefile to get a list of all considered +# directories. +include $(if $(KBUILD_SRC),$(srctree)/)Makefile + +list-dirs := $(addprefix _list_, . $(vmlinux-alldirs)) + +# Default value for print_files +print_files ?= y + +PHONY += $(list-dirs) list +$(list-dirs): +ifeq ($(compiled),) + $(Q)$(MAKE) $(list) \ + auto_conf=$(auto_conf) \ + print_dirs=$(print_dirs) \ + print_files=$(print_files) \ + obj=$(patsubst _list_%,%,$@) +else + $(Q)$(MAKE) $(list) \ + auto_conf=$(auto_conf) \ + compiled=$(patsubst %.c,%.o,$(compiled)) \ + obj=$(patsubst _list_%,%,$@) +endif + +list: $(list-dirs) + +list := -f $(if $(KBUILD_SRC),$(srctree)/)scripts/Makefile.list_recursion + diff --git a/scripts/Makefile.list_recursion b/scripts/Makefile.list_recursion new file mode 100644 index 0000000..e448a06 --- /dev/null +++ b/scripts/Makefile.list_recursion @@ -0,0 +1,83 @@ +# This is the recursive part of scripts/Makefile.list +# Have a look there if you are interested in modes of operation +#============================================================== +src := $(obj) + +PHONY := __list __find + +ifeq ($(compiled),) +__list: +else +__find: +endif + +# Read auto.conf if it exists, otherwise ignore +ifeq ($(auto_conf),) +-include include/config/auto.conf +else +include $(auto_conf) +endif + +# The filename Kbuild has precedence over Makefile +kbuild-dir := $(if $(filter /%,$(src)),$(src),$(srctree)/$(src)) +include $(if $(wildcard $(kbuild-dir)/Kbuild), $(kbuild-dir)/Kbuild, $(kbuild-dir)/Makefile) + +# Figure out what we need to build from the various variables +# ========================================================================== + +__subdir-y := $(patsubst %/,%,$(filter %/, $(obj-y))) +subdir-y += $(__subdir-y) +__subdir-m := $(patsubst %/,%,$(filter %/, $(obj-m))) +subdir-m += $(__subdir-m) +__subdir-n := $(patsubst %/,%,$(filter %/, $(obj-n))) +subdir-n += $(__subdir-n) +__subdir- := $(patsubst %/,%,$(filter %/, $(obj-))) +subdir- += $(__subdir-) + +# Subdirectories we need to descend into +subdir-ym := $(sort $(subdir-y) $(subdir-m)) +subdir-ymn := $(sort $(subdir-ym) $(subdir-n) $(subdir-)) + +include scripts/Makefile.lib + +__list: $(subdir-ym) +ifneq ($(print_dirs),) + @echo $(obj)/ +endif +ifneq ($(print_files),) +ifneq ($(strip $(real-objs-y)),) + @for a in $(real-objs-y); do \ + echo $$a y; \ + done +endif +ifneq ($(strip $(real-objs-m)),) + @for a in $(real-objs-m); do \ + echo $$a m; \ + done +endif +endif + @: + +__find: $(foreach dir,$(subdir-ym),$(if $(filter $(dir)%,$(compiled)), $(dir))) +ifneq ($(filter $(compiled),$(real-objs-y)),) + @echo $(compiled) y +endif +ifneq ($(filter $(compiled),$(real-objs-m)),) + @echo $(compiled) m +endif + @: + + +list := -f $(if $(KBUILD_SRC),$(srctree)/)scripts/Makefile.list_recursion + +PHONY += $(subdir-ym) +$(subdir-ym): +ifeq ($(compiled),) + $(Q)$(MAKE) $(list) obj=$(patsubst _list_%,%,$@) +else + $(Q)$(MAKE) $(list) compiled=$(compiled) obj=$(patsubst _list_%,%,$@) +endif + +# Declare the contents of the .PHONY variable as phony. We keep that +# information in a variable se we can use it in if_changed and friends. +.PHONY: $(PHONY) -- 1.7.1 -- To unsubscribe from this list: send the line "unsubscribe linux-kbuild" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
