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-rw-r--r--scripts/Makefile.lib157
1 files changed, 87 insertions, 70 deletions
diff --git a/scripts/Makefile.lib b/scripts/Makefile.lib
index e89a4a51b74..5db2fbc418a 100644
--- a/scripts/Makefile.lib
+++ b/scripts/Makefile.lib
@@ -5,46 +5,40 @@ ccflags-y += $(EXTRA_CFLAGS)
cppflags-y += $(EXTRA_CPPFLAGS)
ldflags-y += $(EXTRA_LDFLAGS)
-#
-# flags that take effect in sub directories
-export KBUILD_SUBDIR_ASFLAGS := $(KBUILD_SUBDIR_ASFLAGS) $(subdir-asflags-y)
-export KBUILD_SUBDIR_CCFLAGS := $(KBUILD_SUBDIR_CCFLAGS) $(subdir-ccflags-y)
+# flags that take effect in current and sub directories
+KBUILD_AFLAGS += $(subdir-asflags-y)
+KBUILD_CFLAGS += $(subdir-ccflags-y)
# Figure out what we need to build from the various variables
# ===========================================================================
# When an object is listed to be built compiled-in and modular,
# only build the compiled-in version
-
obj-m := $(filter-out $(obj-y),$(obj-m))
# Libraries are always collected in one lib file.
# Filter out objects already built-in
-
lib-y := $(filter-out $(obj-y), $(sort $(lib-y) $(lib-m)))
+# Determine modorder.
+# Unfortunately, we don't have information about ordering between -y
+# and -m subdirs. Just put -y's first.
+modorder := $(patsubst %/,%/modules.order, $(filter %/, $(obj-y)) $(obj-m:.o=.ko))
# Handle objects in subdirs
# ---------------------------------------------------------------------------
-# o if we encounter foo/ in $(obj-y), replace it by foo/built-in.o
+# o if we encounter foo/ in $(obj-y), replace it by foo/built-in.a
# and add the directory to the list of dirs to descend into: $(subdir-y)
# o if we encounter foo/ in $(obj-m), remove it from $(obj-m)
# and add the directory to the list of dirs to descend into: $(subdir-m)
-
-# Determine modorder.
-# Unfortunately, we don't have information about ordering between -y
-# and -m subdirs. Just put -y's first.
-modorder := $(patsubst %/,%/modules.order, $(filter %/, $(obj-y)) $(obj-m:.o=.ko))
-
__subdir-y := $(patsubst %/,%,$(filter %/, $(obj-y)))
subdir-y += $(__subdir-y)
__subdir-m := $(patsubst %/,%,$(filter %/, $(obj-m)))
subdir-m += $(__subdir-m)
-obj-y := $(patsubst %/, %/built-in.o, $(obj-y))
+obj-y := $(patsubst %/, %/built-in.a, $(obj-y))
obj-m := $(filter-out %/, $(obj-m))
# Subdirectories we need to descend into
-
subdir-ym := $(sort $(subdir-y) $(subdir-m))
# Expand $(foo-objs) $(foo-y) etc. by replacing their individuals
@@ -54,9 +48,9 @@ multi-search = $(sort $(foreach m, $1, $(if $(call suffix-search, $m, $2, $3 -),
# List primitive targets that are compiled from source files
real-search = $(foreach m, $1, $(if $(call suffix-search, $m, $2, $3 -), $(call suffix-search, $m, $2, $3), $m))
-# if $(foo-objs) exists, foo.o is a composite object
+# if $(foo-objs), $(foo-y), or $(foo-m) exists, foo.o is a composite object
multi-used-y := $(sort $(foreach m,$(obj-y), $(if $(strip $($(m:.o=-objs)) $($(m:.o=-y))), $(m))))
-multi-used-m := $(sort $(foreach m,$(obj-m), $(if $(strip $($(m:.o=-objs)) $($(m:.o=-y))), $(m))))
+multi-used-m := $(sort $(foreach m,$(obj-m), $(if $(strip $($(m:.o=-objs)) $($(m:.o=-y)) $($(m:.o=-m))), $(m))))
multi-used := $(multi-used-y) $(multi-used-m)
single-used-m := $(sort $(filter-out $(multi-used-m),$(obj-m)))
@@ -74,11 +68,22 @@ base-dtb-y := $(foreach m, $(multi-dtb-y), $(firstword $(call suffix-search, $m,
# $(subdir-obj-y) is the list of objects in $(obj-y) which uses dir/ to
# tell kbuild to descend
-subdir-obj-y := $(filter %/built-in.o, $(obj-y))
+subdir-obj-y := $(filter %/built-in.a, $(obj-y))
-# Replace multi-part objects by their individual parts, look at local dir only
-real-objs-y := $(foreach m, $(filter-out $(subdir-obj-y), $(obj-y)), $(if $(strip $($(m:.o=-objs)) $($(m:.o=-y))),$($(m:.o=-objs)) $($(m:.o=-y)),$(m))) $(extra-y)
-real-objs-m := $(foreach m, $(obj-m), $(if $(strip $($(m:.o=-objs)) $($(m:.o=-y))),$($(m:.o=-objs)) $($(m:.o=-y)),$(m)))
+# Replace multi-part objects by their individual parts,
+# including built-in.a from subdirectories
+real-obj-y := $(foreach m, $(obj-y), $(if $(strip $($(m:.o=-objs)) $($(m:.o=-y))),$($(m:.o=-objs)) $($(m:.o=-y)),$(m)))
+real-obj-m := $(foreach m, $(obj-m), $(if $(strip $($(m:.o=-objs)) $($(m:.o=-y)) $($(m:.o=-m))),$($(m:.o=-objs)) $($(m:.o=-y)) $($(m:.o=-m)),$(m)))
+
+# DTB
+# If CONFIG_OF_ALL_DTBS is enabled, all DT blobs are built
+extra-y += $(dtb-y)
+extra-$(CONFIG_OF_ALL_DTBS) += $(dtb-)
+
+ifneq ($(CHECK_DTBS),)
+extra-y += $(patsubst %.dtb,%.dt.yaml, $(dtb-y))
+extra-$(CONFIG_OF_ALL_DTBS) += $(patsubst %.dtb,%.dt.yaml, $(dtb-))
+endif
# Add subdir path
@@ -91,8 +96,8 @@ obj-y := $(addprefix $(obj)/,$(obj-y))
obj-m := $(addprefix $(obj)/,$(obj-m))
lib-y := $(addprefix $(obj)/,$(lib-y))
subdir-obj-y := $(addprefix $(obj)/,$(subdir-obj-y))
-real-objs-y := $(addprefix $(obj)/,$(real-objs-y))
-real-objs-m := $(addprefix $(obj)/,$(real-objs-m))
+real-obj-y := $(addprefix $(obj)/,$(real-obj-y))
+real-obj-m := $(addprefix $(obj)/,$(real-obj-m))
single-used-m := $(addprefix $(obj)/,$(single-used-m))
multi-used-y := $(addprefix $(obj)/,$(multi-used-y))
multi-used-m := $(addprefix $(obj)/,$(multi-used-m))
@@ -102,22 +107,25 @@ multi-dtb-y := $(addprefix $(obj)/,$(multi-dtb-y))
real-dtb-y := $(addprefix $(obj)/,$(real-dtb-y))
subdir-ym := $(addprefix $(obj)/,$(subdir-ym))
+# Finds the multi-part object the current object will be linked into.
+# If the object belongs to two or more multi-part objects, all of them are
+# concatenated with a colon separator.
+modname-multi = $(subst $(space),:,$(sort $(foreach m,$(multi-used),\
+ $(if $(filter $*.o, $($(m:.o=-objs)) $($(m:.o=-y)) $($(m:.o=-m))),$(m:.o=)))))
+
+modname = $(if $(modname-multi),$(modname-multi),$(basetarget))
+
# These flags are needed for modversions and compiling, so we define them here
-# already
-# $(modname_flags) #defines KBUILD_MODNAME as the name of the module it will
+# $(modname_flags) defines KBUILD_MODNAME as the name of the module it will
# end up in (or would, if it gets compiled in)
-# Note: Files that end up in two or more modules are compiled without the
-# KBUILD_MODNAME definition. The reason is that any made-up name would
-# differ in different configs.
name-fix = $(squote)$(quote)$(subst $(comma),_,$(subst -,_,$1))$(quote)$(squote)
basename_flags = -DKBUILD_BASENAME=$(call name-fix,$(basetarget))
-modname_flags = $(if $(filter 1,$(words $(modname))),\
- -DKBUILD_MODNAME=$(call name-fix,$(modname)))
+modname_flags = -DKBUILD_MODNAME=$(call name-fix,$(modname))
-orig_c_flags = $(KBUILD_CPPFLAGS) $(KBUILD_CFLAGS) $(KBUILD_SUBDIR_CCFLAGS) \
+orig_c_flags = $(KBUILD_CPPFLAGS) $(KBUILD_CFLAGS) \
$(ccflags-y) $(CFLAGS_$(basetarget).o)
_c_flags = $(filter-out $(CFLAGS_REMOVE_$(basetarget).o), $(orig_c_flags))
-orig_a_flags = $(KBUILD_CPPFLAGS) $(KBUILD_AFLAGS) $(KBUILD_SUBDIR_ASFLAGS) \
+orig_a_flags = $(KBUILD_CPPFLAGS) $(KBUILD_AFLAGS) \
$(asflags-y) $(AFLAGS_$(basetarget).o)
_a_flags = $(filter-out $(AFLAGS_REMOVE_$(basetarget).o), $(orig_a_flags))
_cpp_flags = $(KBUILD_CPPFLAGS) $(cppflags-y) $(CPPFLAGS_$(@F))
@@ -140,18 +148,29 @@ endif
ifeq ($(CONFIG_KASAN),y)
_c_flags += $(if $(patsubst n%,, \
$(KASAN_SANITIZE_$(basetarget).o)$(KASAN_SANITIZE)y), \
- $(CFLAGS_KASAN))
+ $(CFLAGS_KASAN), $(CFLAGS_KASAN_NOSANITIZE))
endif
-# If building the kernel in a separate objtree expand all occurrences
-# of -Idir to -I$(srctree)/dir except for absolute paths (starting with '/').
+ifeq ($(CONFIG_UBSAN),y)
+_c_flags += $(if $(patsubst n%,, \
+ $(UBSAN_SANITIZE_$(basetarget).o)$(UBSAN_SANITIZE)$(CONFIG_UBSAN_SANITIZE_ALL)), \
+ $(CFLAGS_UBSAN))
+endif
+
+ifeq ($(CONFIG_KCOV),y)
+_c_flags += $(if $(patsubst n%,, \
+ $(KCOV_INSTRUMENT_$(basetarget).o)$(KCOV_INSTRUMENT)$(CONFIG_KCOV_INSTRUMENT_ALL)), \
+ $(CFLAGS_KCOV))
+endif
-ifeq ($(KBUILD_SRC),)
__c_flags = $(_c_flags)
__a_flags = $(_a_flags)
__cpp_flags = $(_cpp_flags)
-else
+# If building the kernel in a separate objtree expand all occurrences
+# of -Idir to -I$(srctree)/dir except for absolute paths (starting with '/').
+ifeq ($(KBUILD_EXTMOD),)
+ifneq ($(KBUILD_SRC),)
# -I$(obj) locates generated .h files
# $(call addtree,-I$(obj)) locates .h files in srctree, from generated .c files
# and locates generated .h files
@@ -161,7 +180,7 @@ __c_flags = $(if $(obj),$(call addtree,-I$(src)) -I$(obj)) \
__a_flags = $(call flags,_a_flags)
__cpp_flags = $(call flags,_cpp_flags)
endif
-
+endif
# Modified for U-Boot: LINUXINCLUDE -> UBOOTINCLUDE
c_flags = -Wp,-MD,$(depfile) $(NOSTDINC_FLAGS) $(UBOOTINCLUDE) \
$(__c_flags) $(modkern_cflags) \
@@ -205,8 +224,10 @@ dtsi_include_list = $(strip $(u_boot_dtsi_options_debug) \
# Modified for U-Boot
upstream_dtsi_include = $(addprefix -I, $(srctree)/dts/upstream/src/ \
$(sort $(dir $(wildcard $(srctree)/dts/upstream/src/$(ARCH)/*/*))) \
+ $(sort $(dir $(wildcard $(srctree)/dts/upstream/src/$(ARCH)/*/*/*))) \
$(if (CONFIG_ARM64), \
- $(sort $(dir $(wildcard $(srctree)/dts/upstream/src/arm64/*/*)))))
+ $(sort $(dir $(wildcard $(srctree)/dts/upstream/src/arm64/*/*))) \
+ $(sort $(dir $(wildcard $(srctree)/dts/upstream/src/arm64/*/*/*)))))
dtc_cpp_flags = -Wp,-MD,$(depfile).pre.tmp -nostdinc \
$(UBOOTINCLUDE) \
-I$(dir $<) \
@@ -220,7 +241,6 @@ dtc_cpp_flags = -Wp,-MD,$(depfile).pre.tmp -nostdinc \
# Finds the multi-part object the current object will be linked into
modname-multi = $(sort $(foreach m,$(multi-used),\
$(if $(filter $(subst $(obj)/,,$*.o), $($(m:.o=-objs)) $($(m:.o=-y))),$(m:.o=))))
-
# Useful for describing the dependency of composite objects
# Usage:
# $(call multi_depend, multi_used_targets, suffix_to_remove, suffix_to_add)
@@ -276,7 +296,13 @@ $(obj)/%: $(src)/%_shipped
# ---------------------------------------------------------------------------
quiet_cmd_ld = LD $@
-cmd_ld = $(LD) $(ld_flags) $(filter-out FORCE,$^) -o $@
+ cmd_ld = $(LD) $(ld_flags) $(real-prereqs) -o $@
+
+# Archive
+# ---------------------------------------------------------------------------
+
+quiet_cmd_ar = AR $@
+ cmd_ar = rm -f $@; $(AR) rcsTP$(KBUILD_ARFLAGS) $@ $(real-prereqs)
# Objcopy
# ---------------------------------------------------------------------------
@@ -288,11 +314,11 @@ cmd_objcopy = $(OBJCOPY) $(OBJCOPYFLAGS) $(OBJCOPYFLAGS_$(@F)) $< $@
# ---------------------------------------------------------------------------
quiet_cmd_gzip = GZIP $@
-cmd_gzip = (cat $(filter-out FORCE,$^) | gzip -n -f -9 > $@) || \
- (rm -f $@ ; false)
+ cmd_gzip = cat $(real-prereqs) | gzip -n -f -9 > $@
# DTC
# ---------------------------------------------------------------------------
+DTC ?= $(objtree)/scripts/dtc/dtc
# Disable noisy checks by default
ifeq ($(findstring 1,$(KBUILD_ENABLE_EXTRA_GCC_CHECKS)),)
@@ -301,9 +327,8 @@ DTC_FLAGS += -Wno-unit_address_vs_reg \
-Wno-avoid_unnecessary_addr_size \
-Wno-alias_paths \
-Wno-graph_child_address \
- -Wno-graph_port \
- -Wno-unique_unit_address \
-Wno-simple_bus_reg \
+ -Wno-unique_unit_address \
-Wno-pci_device_reg
# U-Boot specific disables
@@ -325,7 +350,7 @@ DTC_FLAGS += $(if $(filter $(patsubst $(obj)/%,%,$@), $(base-dtb-y)), -@)
quiet_cmd_dt_S_dtb= DTBS $@
# Modified for U-Boot
cmd_dt_S_dtb= \
-( \
+{ \
echo '.section .dtb.init.rodata,"a"'; \
echo '.balign 16'; \
echo '.global __dtb_$(subst -,_,$(*F))_begin'; \
@@ -334,7 +359,7 @@ cmd_dt_S_dtb= \
echo '__dtb_$(subst -,_,$(*F))_end:'; \
echo '.global __dtb_$(subst -,_,$(*F))_end'; \
echo '.balign 16'; \
-) > $@
+} > $@
$(obj)/%.dtb.S: $(obj)/%.dtb
$(call cmd,dt_S_dtb)
@@ -547,7 +572,7 @@ $(obj)/dsdt_generated.c: $(src)/dsdt.asl
# append the size as a 32-bit littleendian number as gzip does.
size_append = printf $(shell \
dec_size=0; \
-for F in $1; do \
+for F in $(real-prereqs); do
fsize=$$(stat -c "%s" $$F); \
dec_size=$$(expr $$dec_size + $$fsize); \
done; \
@@ -561,27 +586,20 @@ printf "%08x\n" $$dec_size | \
)
quiet_cmd_bzip2 = BZIP2 $@
-cmd_bzip2 = (cat $(filter-out FORCE,$^) | \
- bzip2 -9 && $(call size_append, $(filter-out FORCE,$^))) > $@ || \
- (rm -f $@ ; false)
+ cmd_bzip2 = { cat $(real-prereqs) | bzip2 -9 && $(size_append); } > $@
# Lzma
# ---------------------------------------------------------------------------
quiet_cmd_lzma = LZMA $@
-cmd_lzma = (cat $(filter-out FORCE,$^) | \
- lzma -9 && $(call size_append, $(filter-out FORCE,$^))) > $@ || \
- (rm -f $@ ; false)
+ cmd_lzma = { cat $(real-prereqs) | lzma -9 && $(size_append); } > $@
quiet_cmd_lzo = LZO $@
-cmd_lzo = (cat $(filter-out FORCE,$^) | \
- lzop -9 && $(call size_append, $(filter-out FORCE,$^))) > $@ || \
- (rm -f $@ ; false)
+ cmd_lzo = { cat $(real-prereqs) | lzop -9 && $(size_append); } > $@
quiet_cmd_lz4 = LZ4 $@
-cmd_lz4 = (cat $(filter-out FORCE,$^) | \
- lz4c -l -c1 stdin stdout && $(call size_append, $(filter-out FORCE,$^))) > $@ || \
- (rm -f $@ ; false)
+ cmd_lz4 = { cat $(real-prereqs) | lz4c -l -c1 stdin stdout && \
+ $(size_append); } > $@
# U-Boot mkimage
# ---------------------------------------------------------------------------
@@ -625,15 +643,11 @@ quiet_cmd_uimage = UIMAGE $(UIMAGE_OUT)
# big dictionary would increase the memory usage too much in the multi-call
# decompression mode. A BCJ filter isn't used either.
quiet_cmd_xzkern = XZKERN $@
-cmd_xzkern = (cat $(filter-out FORCE,$^) | \
- sh $(srctree)/scripts/xz_wrap.sh && \
- $(call size_append, $(filter-out FORCE,$^))) > $@ || \
- (rm -f $@ ; false)
+cmd_xzkern = { cat $(filter-out FORCE,$^) | \
+ sh $(srctree)/scripts/xz_wrap.sh && $(size_append); } > $@
quiet_cmd_xzmisc = XZMISC $@
-cmd_xzmisc = (cat $(filter-out FORCE,$^) | \
- xz --check=crc32 --lzma2=dict=1MiB) > $@ || \
- (rm -f $@ ; false)
+cmd_xzmisc = cat $(real-prereqs) | xz --check=crc32 --lzma2=dict=1MiB > $@
# Additional commands for U-Boot
#
@@ -707,18 +721,21 @@ quiet_cmd_fdt_rm_props = FDTGREP $@
# ---------------------------------------------------------------------------
# Default sed regexp - multiline due to syntax constraints
+#
+# Use [:space:] because LLVM's integrated assembler inserts <tab> around
+# the .ascii directive whereas GCC keeps the <space> as-is.
define sed-offsets
- "s:[[:space:]]*\.ascii[[:space:]]*\"\(.*\)\":\1:; \
+ 's:^[[:space:]]*\.ascii[[:space:]]*"\(.*\)".*:\1:; \
/^->/{s:->#\(.*\):/* \1 */:; \
s:^->\([^ ]*\) [\$$#]*\([-0-9]*\) \(.*\):#define \1 \2 /* \3 */:; \
s:^->\([^ ]*\) [\$$#]*\([^ ]*\) \(.*\):#define \1 \2 /* \3 */:; \
- s:->::; p;}"
+ s:->::; p;}'
endef
# Use filechk to avoid rebuilds when a header changes, but the resulting file
# does not
define filechk_offsets
- (set -e; \
+ ( \
echo "#ifndef $2"; \
echo "#define $2"; \
echo "/*"; \