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feature	-	Open
tests	-	Open
Build.include	4.71 MB	View DL Edit
fixdep.c	3.72 MB	View DL Edit
Makefile	1.2 MB	View DL Edit
Makefile.build	4.51 MB	View DL Edit
Makefile.feature	10.14 MB	View DL Edit
Makefile.include	500 B	View DL Edit

Edit file: /usr/src/kernels/5.14.0-611.27.1.el9_7.x86_64/tools/build/Build.include

###
# build: Generic definitions
#
#  Lots of this code have been borrowed or heavily inspired from parts
#  of kbuild code, which is not credited, but mostly developed by:
#
#  Copyright (C) Sam Ravnborg <sam@mars.ravnborg.org>, 2015
#  Copyright (C) Linus Torvalds <torvalds@linux-foundation.org>, 2015
#

###
# Convenient variables
comma   := ,
squote  := '
pound   := \#

###
# Name of target with a '.' as filename prefix. foo/bar.o => foo/.bar.o
dot-target = $(dir $@).$(notdir $@)

###
# filename of target with directory and extension stripped
basetarget = $(basename $(notdir $@))

###
# The temporary file to save gcc -MD generated dependencies must not
# contain a comma
depfile = $(subst $(comma),_,$(dot-target).d)

###
# Check if both arguments has same arguments. Result is empty string if equal.
arg-check = $(strip $(filter-out $(cmd_$(1)), $(cmd_$@)) \
                    $(filter-out $(cmd_$@),   $(cmd_$(1))) )

###
# Escape single quote for use in echo statements
escsq = $(subst $(squote),'\$(squote)',$1)

# Echo command
# Short version is used, if $(quiet) equals `quiet_', otherwise full one.
echo-cmd = $(if $($(quiet)cmd_$(1)),\
           echo '  $(call escsq,$($(quiet)cmd_$(1)))';)

###
# Replace >$< with >$$< to preserve $ when reloading the .cmd file
# (needed for make)
# Replace >#< with >$(pound)< to avoid starting a comment in the .cmd file
# (needed for make)
# Replace >'< with >'\''< to be able to enclose the whole string in '...'
# (needed for the shell)
make-cmd = $(call escsq,$(subst $(pound),$$(pound),$(subst $$,$$$$,$(cmd_$(1)))))

###
# Find any prerequisites that is newer than target or that does not exist.
# PHONY targets skipped in both cases.
any-prereq = $(filter-out $(PHONY),$?) $(filter-out $(PHONY) $(wildcard $^),$^)

###
# Copy dependency data into .cmd file
#  - gcc -M dependency info
#  - command line to create object 'cmd_object :='
dep-cmd = $(if $(wildcard $(fixdep)),                                           \
           $(fixdep) $(depfile) $@ '$(make-cmd)' > $(dot-target).tmp;           \
           rm -f $(depfile);                                                    \
           mv -f $(dot-target).tmp $(dot-target).cmd,                           \
           printf '$(pound) cannot find fixdep (%s)\n' $(fixdep) > $(dot-target).cmd; \
           printf '$(pound) using basic dep data\n\n' >> $(dot-target).cmd;           \
           cat $(depfile) >> $(dot-target).cmd;                                 \
           printf '\n%s\n' 'cmd_$@ := $(make-cmd)' >> $(dot-target).cmd)

###
# if_changed_dep  - execute command if any prerequisite is newer than
#                   target, or command line has changed and update
#                   dependencies in the cmd file
if_changed_dep = $(if $(strip $(any-prereq) $(arg-check)),         \
                  @set -e;                                         \
                  $(echo-cmd) $(cmd_$(1));                         \
                  $(dep-cmd))

# if_changed      - execute command if any prerequisite is newer than
#                   target, or command line has changed
if_changed = $(if $(strip $(any-prereq) $(arg-check)),                   \
              @set -e;                                                   \
              $(echo-cmd) $(cmd_$(1));                                   \
              printf '%s\n' 'cmd_$@ := $(make-cmd)' > $(dot-target).cmd)

###
# C flags to be used in rule definitions, includes:
# - depfile generation
# - global $(CFLAGS)
# - per target C flags
# - per object C flags
# - BUILD_STR macro to allow '-D"$(variable)"' constructs
c_flags_1 = -Wp,-MD,$(depfile) -Wp,-MT,$@ $(CFLAGS) -D"BUILD_STR(s)=\#s" $(CFLAGS_$(basetarget).o) $(CFLAGS_$(obj))
c_flags_2 = $(filter-out $(CFLAGS_REMOVE_$(basetarget).o), $(c_flags_1))
c_flags   = $(filter-out $(CFLAGS_REMOVE_$(obj)), $(c_flags_2))
cxx_flags = -Wp,-MD,$(depfile) -Wp,-MT,$@ $(CXXFLAGS) -D"BUILD_STR(s)=\#s" $(CXXFLAGS_$(basetarget).o) $(CXXFLAGS_$(obj))

###
## HOSTCC C flags

host_c_flags = -Wp,-MD,$(depfile) -Wp,-MT,$@ $(HOSTCFLAGS) -D"BUILD_STR(s)=\#s" $(HOSTCFLAGS_$(basetarget).o) $(HOSTCFLAGS_$(obj))

# output directory for tests below
TMPOUT = .tmp_$$$$

# try-run
# Usage: option = $(call try-run, $(CC)...-o "$$TMP",option-ok,otherwise)
# Exit code chooses option. "$$TMP" serves as a temporary file and is
# automatically cleaned up.
try-run = $(shell set -e;		\
	TMP=$(TMPOUT)/tmp;		\
	mkdir -p $(TMPOUT);		\
	trap "rm -rf $(TMPOUT)" EXIT;	\
	if ($(1)) >/dev/null 2>&1;	\
	then echo "$(2)";		\
	else echo "$(3)";		\
	fi)

# cc-option
# Usage: cflags-y += $(call cc-option,-march=winchip-c6,-march=i586)
cc-option = $(call try-run, \
	$(CC) -Werror $(1) -c -x c /dev/null -o "$$TMP",$(1),$(2))

# delete partially updated (i.e. corrupted) files on error
.DELETE_ON_ERROR:

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