mirror of
https://github.com/edk2-porting/linux-next.git
synced 2024-12-25 21:54:06 +08:00
b61442df74
Since commit57fd251c78
("kbuild: split cc-option and friends to scripts/Makefile.compiler"), some kselftests fail to build. The tools/ directory opted out Kbuild, and went in a different direction. People copied scripts and Makefiles to the tools/ directory to create their own build system. tools/build/Build.include mimics scripts/Kbuild.include, but some tool Makefiles include the Kbuild one to import a feature that is missing in tools/build/Build.include: - Commitec04aa3ae8
("tools/thermal: tmon: use "-fstack-protector" only if supported") included scripts/Kbuild.include from tools/thermal/tmon/Makefile to import the cc-option macro. - Commitc2390f16fc
("selftests: kvm: fix for compilers that do not support -no-pie") included scripts/Kbuild.include from tools/testing/selftests/kvm/Makefile to import the try-run macro. - Commit9cae4ace80
("selftests/bpf: do not ignore clang failures") included scripts/Kbuild.include from tools/testing/selftests/bpf/Makefile to import the .DELETE_ON_ERROR target. - Commit0695f8bca9
("selftests/powerpc: Handle Makefile for unrecognized option") included scripts/Kbuild.include from tools/testing/selftests/powerpc/pmu/ebb/Makefile to import the try-run macro. Copy what they need into tools/build/Build.include, and make them include it instead of scripts/Kbuild.include. Link: https://lore.kernel.org/lkml/86dadf33-70f7-a5ac-cb8c-64966d2f45a1@linux.ibm.com/ Fixes:57fd251c78
("kbuild: split cc-option and friends to scripts/Makefile.compiler") Reported-by: Janosch Frank <frankja@linux.ibm.com> Reported-by: Christian Borntraeger <borntraeger@de.ibm.com> Signed-off-by: Masahiro Yamada <masahiroy@kernel.org> Tested-by: Christian Borntraeger <borntraeger@de.ibm.com> Acked-by: Yonghong Song <yhs@fb.com>
127 lines
4.7 KiB
Plaintext
127 lines
4.7 KiB
Plaintext
###
|
|
# 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,$@ $(KBUILD_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:
|