threeeye
bc1d038eac
Squashed backup commit (no shallow-clone history issues) of xiaomi-mt6833-dev/kernel_xiaomi_mt6833 (lineage-23.2 branch, upstream commit 9eece662e) plus all fixes applied to get everpal_defconfig building clean against a modern (GCC 15.2.0) toolchain -- see the previous commit message on the lineage-23.2 branch (also in this repo history is not available here since this is a squashed snapshot; full incremental history lives in the local DL380 checkout and the upstream GitHub remote). Upstream: https://github.com/xiaomi-mt6833-dev/kernel_xiaomi_mt6833 (lineage-23.2)
80 lines
2.3 KiB
Makefile
80 lines
2.3 KiB
Makefile
# SPDX-License-Identifier: GPL-2.0
|
|
hostprogs-y := vdsomunge
|
|
|
|
obj-vdso := vgettimeofday.o datapage.o
|
|
|
|
# Build rules
|
|
targets := $(obj-vdso) vdso.so vdso.so.dbg vdso.so.raw vdso.lds
|
|
obj-vdso := $(addprefix $(obj)/, $(obj-vdso))
|
|
|
|
ccflags-y := -fPIC -fno-common -fno-builtin -fno-stack-protector
|
|
ccflags-y += -DDISABLE_BRANCH_PROFILING
|
|
|
|
VDSO_LDFLAGS := -Wl,-Bsymbolic -Wl,--no-undefined -Wl,-soname=linux-vdso.so.1
|
|
VDSO_LDFLAGS += -Wl,-z,max-page-size=4096 -Wl,-z,common-page-size=4096
|
|
VDSO_LDFLAGS += -nostdlib -shared
|
|
VDSO_LDFLAGS += $(call cc-ldoption, -Wl$(comma)--hash-style=sysv)
|
|
VDSO_LDFLAGS += $(call cc-ldoption, -Wl$(comma)--build-id)
|
|
VDSO_LDFLAGS += $(call cc-ldoption, -fuse-ld=bfd)
|
|
|
|
obj-$(CONFIG_VDSO) += vdso.o
|
|
extra-$(CONFIG_VDSO) += vdso.lds
|
|
CPPFLAGS_vdso.lds += -P -C -U$(ARCH)
|
|
|
|
CFLAGS_REMOVE_vdso.o = -pg
|
|
|
|
# Force -O2 to avoid libgcc dependencies
|
|
CFLAGS_REMOVE_vgettimeofday.o = -pg -Os
|
|
CFLAGS_vgettimeofday.o = -O2
|
|
|
|
# Disable gcov profiling for VDSO code
|
|
GCOV_PROFILE := n
|
|
|
|
# Force dependency
|
|
$(obj)/vdso.o : $(obj)/vdso.so
|
|
|
|
# Link rule for the .so file
|
|
$(obj)/vdso.so.raw: $(src)/vdso.lds $(obj-vdso) FORCE
|
|
$(call if_changed,vdsold)
|
|
|
|
$(obj)/vdso.so.dbg: $(obj)/vdso.so.raw $(obj)/vdsomunge FORCE
|
|
$(call if_changed,vdsomunge)
|
|
|
|
# Strip rule for the .so file
|
|
$(obj)/%.so: OBJCOPYFLAGS := -S
|
|
$(obj)/%.so: $(obj)/%.so.dbg FORCE
|
|
$(call if_changed,objcopy)
|
|
|
|
# Actual build commands
|
|
quiet_cmd_vdsold = VDSO $@
|
|
cmd_vdsold = $(CC) $(c_flags) $(VDSO_LDFLAGS) \
|
|
-Wl,-T $(filter %.lds,$^) $(filter %.o,$^) -o $@
|
|
|
|
quiet_cmd_vdsomunge = MUNGE $@
|
|
cmd_vdsomunge = $(objtree)/$(obj)/vdsomunge $< $@
|
|
|
|
#
|
|
# Install the unstripped copy of vdso.so.dbg. If our toolchain
|
|
# supports build-id, install .build-id links as well.
|
|
#
|
|
# Cribbed from arch/x86/vdso/Makefile.
|
|
#
|
|
quiet_cmd_vdso_install = INSTALL $<
|
|
define cmd_vdso_install
|
|
cp $< "$(MODLIB)/vdso/vdso.so"; \
|
|
if readelf -n $< | grep -q 'Build ID'; then \
|
|
buildid=`readelf -n $< |grep 'Build ID' |sed -e 's/^.*Build ID: \(.*\)$$/\1/'`; \
|
|
first=`echo $$buildid | cut -b-2`; \
|
|
last=`echo $$buildid | cut -b3-`; \
|
|
mkdir -p "$(MODLIB)/vdso/.build-id/$$first"; \
|
|
ln -sf "../../vdso.so" "$(MODLIB)/vdso/.build-id/$$first/$$last.debug"; \
|
|
fi
|
|
endef
|
|
|
|
$(MODLIB)/vdso: FORCE
|
|
@mkdir -p $(MODLIB)/vdso
|
|
|
|
PHONY += vdso_install
|
|
vdso_install: $(obj)/vdso.so.dbg $(MODLIB)/vdso
|
|
$(call cmd,vdso_install)
|