diff options
Diffstat (limited to 'scripts/Kbuild.include')
| -rw-r--r-- | scripts/Kbuild.include | 136 |
1 files changed, 91 insertions, 45 deletions
diff --git a/scripts/Kbuild.include b/scripts/Kbuild.include index 76466bd..7ccc03d 100644 --- a/scripts/Kbuild.include +++ b/scripts/Kbuild.include @@ -9,14 +9,7 @@ # - Q / KBUILD_VERBOSE : `make V=1` shows full commands, # default V=0 prints a one-line summary # - $(call cmd,<name>) : echo a quiet summary, then run cmd_<name> -# - $(call if_changed,<name>) : currently a thin alias for $(cmd) — -# no .cmd-file hashing yet (Linux's full -# if_changed uses fixdep to detect both -# recipe-text and header changes; LumeOS -# relies on `-MMD -MP` for headers and -# on `make clean` for flag changes). -# - $(call kbuild-objs,...) : translate Kbuild-style `obj-y := foo.o` -# entries into SRCS_C / SRCS_CC. +# - $(call if_changed,<name>) : rebuild when inputs or the command change. # # Naming convention adopted from Linux: each command has both a # `quiet_cmd_<name>` (single-line summary) and a `cmd_<name>` (full @@ -49,11 +42,11 @@ echo-cmd = $(if $($(quiet)cmd_$(1)),echo ' $($(quiet)cmd_$(1))';) cmd = @$(echo-cmd) $(cmd_$(1)) -# if_changed currently degenerates to `cmd` — full Linux semantics -# require tracking the command-line via per-target .<file>.cmd files -# and comparing on every rebuild, which needs fixdep. Until LumeOS -# grows that infrastructure, `make clean` after editing CFLAGS suffices. -if_changed = $(cmd) +# Record a checksum of the exact argv next to each output. FORCE makes Make +# reconsider the action; run-if-changed executes it only for a changed input or +# command signature. +if_changed = @scripts/build/run-if-changed.sh \ + $(dir $@).$(notdir $@).cmd $@ '$($(quiet)cmd_$(1))' $^ -- $(cmd_$(1)) # --- Standard quiet_cmd_* / cmd_* templates --------------------------- # @@ -61,21 +54,99 @@ if_changed = $(cmd) # name via $(call cmd,<name>). Add new pairs here as new recipe shapes # show up (e.g., cmd_lz / cmd_gz / cmd_zstd for compressed Image targets). - quiet_cmd_cc_o_c = CC $< - cmd_cc_o_c = $(CC) $(CFLAGS_LIBC) -c $< -o $@ + quiet_cmd_cc_o_c = CC $(PRIVATE_SOURCE) + cmd_cc_o_c = $(CC) $(CFLAGS_LIBC) $(PRIVATE_INCLUDES) $(PRIVATE_DEFINES) $(PRIVATE_CFLAGS) -c $(PRIVATE_SOURCE) -o $@ - quiet_cmd_cxx_o_cc = CXX $< - cmd_cxx_o_cc = $(CXX) $(CXXFLAGS) -c $< -o $@ + quiet_cmd_cxx_o_cc = CXX $(PRIVATE_SOURCE) + cmd_cxx_o_cc = $(CXX) $(CXXFLAGS) $(PRIVATE_INCLUDES) $(PRIVATE_DEFINES) $(PRIVATE_CXXFLAGS) -c $(PRIVATE_SOURCE) -o $@ - quiet_cmd_as_o_S = AS $< - cmd_as_o_S = $(CC) $(ASFLAGS) -c $< -o $@ + quiet_cmd_as_o_S = AS $(PRIVATE_SOURCE) + cmd_as_o_S = $(CC) $(ASFLAGS) $(PRIVATE_INCLUDES) $(PRIVATE_DEFINES) $(PRIVATE_ASFLAGS) -c $(PRIVATE_SOURCE) -o $@ quiet_cmd_cc_s_c = CC -S $< - cmd_cc_s_c = $(CC) $(CFLAGS_LIBC) -S $< -o $@ + cmd_cc_s_c = $(CC) $(CFLAGS_LIBC) -S $(PRIVATE_SOURCE) -o $@ + + quiet_cmd_gen_asm_offsets = GEN $@ + cmd_gen_asm_offsets = scripts/build/generate-asm-offsets.sh $@ \ + $(ASM_OFFSETS_S) $(ASM_OFFSETS_SED) $(ASM_OFFSETS_C) + + quiet_cmd_autoconf = GEN $@ + cmd_autoconf = scripts/build/generate-autoconf.sh $@ \ + CONFIG_NR_CPUS $(CONFIG_NR_CPUS) value \ + CONFIG_HZ $(CONFIG_HZ) value \ + CONFIG_NR_PRIORITIES $(CONFIG_NR_PRIORITIES) value \ + CONFIG_DEFAULT_PRIORITY $(CONFIG_DEFAULT_PRIORITY) value \ + CONFIG_IDLE_PRIORITY $(CONFIG_IDLE_PRIORITY) value \ + CONFIG_DEFAULT_TIMESLICE $(CONFIG_DEFAULT_TIMESLICE) value \ + CONFIG_PAGE_SIZE $(CONFIG_PAGE_SIZE) value \ + CONFIG_MAX_ORDER $(CONFIG_MAX_ORDER) value \ + CONFIG_KERNEL_STACK_SIZE $(CONFIG_KERNEL_STACK_SIZE) value \ + CONFIG_KASLR $(CONFIG_KASLR) bool \ + CONFIG_KASLR_POLICY_ID $(CONFIG_KASLR_POLICY_ID) value \ + CONFIG_KASLR_LOG_LEVEL $(CONFIG_KASLR_LOG_LEVEL) value \ + CONFIG_STACK_CANARY $(CONFIG_STACK_CANARY) bool \ + CONFIG_DEBUG $(CONFIG_DEBUG) bool \ + CONFIG_DEBUG_LOCKS $(CONFIG_DEBUG_LOCKS) bool \ + CONFIG_SELFTEST $(CONFIG_SELFTEST) bool \ + CONFIG_KLOG $(CONFIG_KLOG) bool \ + CONFIG_KERNEL_COMPRESSED $(CONFIG_KERNEL_COMPRESSED) bool + + quiet_cmd_linker_script = LDS $@ + cmd_linker_script = $(CC) -E -P -x c $(INCLUDES) $(PRIVATE_SOURCE) -o $@ + + quiet_cmd_initramfs = INITRAMFS $(INITRAMFS_SOURCE) + cmd_initramfs = scripts/build/generate-initramfs.sh $(GEN_INIT_CPIO) \ + ./scripts/gen_initramfs.sh $@ \ + $(CONFIG_INITRAMFS_ROOT_UID) $(CONFIG_INITRAMFS_ROOT_GID) \ + $(INITRAMFS_SOURCE) + + quiet_cmd_initramfs_obj = AS $@ (initramfs) + cmd_initramfs_obj = $(CC) $(ASFLAGS) \ + -DINITRAMFS_IMAGE='"$(INITRAMFS_CPIO)"' \ + -c $(PRIVATE_SOURCE) -o $@ quiet_cmd_objcopy_bin = OBJCOPY $@ cmd_objcopy_bin = $(OBJCOPY) -O binary $< $@ + quiet_cmd_archive = AR $@ + cmd_archive = scripts/build/archive.sh $@ $(AR) $(PRIVATE_ARCHIVE_OBJECTS) + + quiet_cmd_host_tool = HOSTCC $@ + cmd_host_tool = $(HOSTCC) $(HOSTCFLAGS) $(PRIVATE_HOST_CFLAGS) \ + -o $@ $(PRIVATE_HOST_SOURCE) + + quiet_cmd_host_cc_o_c = HOSTCC $(PRIVATE_SOURCE) + cmd_host_cc_o_c = $(HOSTCC) $(HOSTCFLAGS) -MMD -MP -c $(PRIVATE_SOURCE) -o $@ + + quiet_cmd_host_cxx_o_cc = HOSTCXX $(PRIVATE_SOURCE) + cmd_host_cxx_o_cc = $(HOSTCXX) $(HOSTCXXFLAGS) -MMD -MP -c $(PRIVATE_SOURCE) -o $@ + + quiet_cmd_host_archive = HOSTAR $@ + cmd_host_archive = scripts/build/archive.sh $@ $(HOSTAR) $(PRIVATE_ARCHIVE_OBJECTS) + + quiet_cmd_host_link = HOSTLD $@ + cmd_host_link = $(HOSTCXX) $(HOSTCXXFLAGS) -o $@ \ + $(PRIVATE_HOST_OBJECTS) $(PRIVATE_HOST_LIBS) + + quiet_cmd_toolchain_probe = PROBE toolchain + cmd_toolchain_probe = scripts/build/probe-toolchain.sh $@ \ + $(CC) $(CXX) $(LD) $(COMPILER_FAMILY) $(TARGET_TRIPLE) \ + '$(GCC_TOOLCHAIN)' '$(GCC_SYSROOT)' + + quiet_cmd_phys_cc_o_c = PHYSCC $(PRIVATE_SOURCE) + cmd_phys_cc_o_c = $(CC) $(PHYS_CFLAGS) -MMD -MP -c $(PRIVATE_SOURCE) -o $@ + + quiet_cmd_phys_cxx_o_cc = PHYSCXX $(PRIVATE_SOURCE) + cmd_phys_cxx_o_cc = $(CXX) $(PHYS_CXXFLAGS) -MMD -MP -c $(PRIVATE_SOURCE) -o $@ + + quiet_cmd_phys_as_o_S = PHYSAS $(PRIVATE_SOURCE) + cmd_phys_as_o_S = $(CC) $(PHYS_ASFLAGS) -MMD -MP -c $(PRIVATE_SOURCE) -o $@ + + quiet_cmd_link_vmlume = LD $@ + cmd_link_vmlume = scripts/build/link-kernel.sh $@ $(SIZE) \ + $(LD) $(LDFLAGS) -T $(LINKER_SCRIPT) -o $@ \ + $(KERNEL_LINK_INPUTS) $(INITRAMFS_OBJ) + # Objcopy with custom flags via per-target OBJCOPYFLAGS variable — # used by the .pi.o post-processing rule (--prefix-symbols=__pi_ etc.). quiet_cmd_objcopy = OBJCOPY $@ @@ -83,28 +154,3 @@ if_changed = $(cmd) quiet_cmd_ld_kernel = LD $@ cmd_ld_kernel = $(LD) $(LDFLAGS) -T $(LINKER_SCRIPT) -o $@ $^ - -# --- kbuild-objs: obj-y -> SRCS_C / SRCS_CC --------------------------- -# -# Usage from a subdir Makefile (e.g. arch/riscv/kernel/pi/Makefile): -# -# obj-dir := arch/riscv/kernel/pi -# obj-y := fdt_early.pi.o cmdline_early.pi.o archrandom_early.pi.o -# $(eval $(call kbuild-objs,$(obj-dir),$(obj-y:.pi.o=.o))) -# -# For each <name>.o entry, looks up <dir>/<name>.cc first, then -# <dir>/<name>.c, and appends to SRCS_CC / SRCS_C respectively. -# Pure .pi.o entries should be passed through `:.pi.o=.o` first by the -# caller so the .pi suffix doesn't confuse the source-file lookup. - -define _kbuild-find-src -$(if $(wildcard $(1)/$(basename $(2)).cc),\ - $(eval SRCS_CC += $(1)/$(basename $(2)).cc),\ - $(if $(wildcard $(1)/$(basename $(2)).c),\ - $(eval SRCS_C += $(1)/$(basename $(2)).c),\ - $(error kbuild-objs: no $(1)/$(basename $(2)).{c,cc} for obj $(2)))) -endef - -define kbuild-objs -$(foreach _obj,$(2),$(call _kbuild-find-src,$(1),$(_obj))) -endef |