Linux 6.9-rc1

[linux-2.6-microblaze.git] / Kbuild

diff --git a/Kbuild b/Kbuild
index fa441b9..464b34a 100644 (file)
--- a/Kbuild
+++ b/Kbuild
@@ -2,18 +2,18 @@
 #
 # Kbuild for top-level directory of the kernel
 
-#####
+# Prepare global headers and check sanity before descending into sub-directories
+# ---------------------------------------------------------------------------
+
 # Generate bounds.h
 
 bounds-file := include/generated/bounds.h
 
-always-y := $(bounds-file)
 targets := kernel/bounds.s
 
 $(bounds-file): kernel/bounds.s FORCE
        $(call filechk,offsets,__LINUX_BOUNDS_H__)
 
-#####
 # Generate timeconst.h
 
 timeconst-file := include/generated/timeconst.h
@@ -23,12 +23,10 @@ filechk_gentimeconst = echo $(CONFIG_HZ) | bc -q $<
 $(timeconst-file): kernel/time/timeconst.bc FORCE
        $(call filechk,gentimeconst)
 
-#####
 # Generate asm-offsets.h
 
 offsets-file := include/generated/asm-offsets.h
 
-always-y += $(offsets-file)
 targets += arch/$(SRCARCH)/kernel/asm-offsets.s
 
 arch/$(SRCARCH)/kernel/asm-offsets.s: $(timeconst-file) $(bounds-file)
@@ -36,24 +34,66 @@ arch/$(SRCARCH)/kernel/asm-offsets.s: $(timeconst-file) $(bounds-file)
 $(offsets-file): arch/$(SRCARCH)/kernel/asm-offsets.s FORCE
        $(call filechk,offsets,__ASM_OFFSETS_H__)
 
-#####
 # Check for missing system calls
 
-always-y += missing-syscalls
-
 quiet_cmd_syscalls = CALL    $<
       cmd_syscalls = $(CONFIG_SHELL) $< $(CC) $(c_flags) $(missing_syscalls_flags)
 
-missing-syscalls: scripts/checksyscalls.sh $(offsets-file) FORCE
+PHONY += missing-syscalls
+missing-syscalls: scripts/checksyscalls.sh $(offsets-file)
        $(call cmd,syscalls)
 
-#####
-# Check atomic headers are up-to-date
-
-always-y += old-atomics
-
-quiet_cmd_atomics = CALL    $<
-      cmd_atomics = $(CONFIG_SHELL) $<
-
-old-atomics: scripts/atomic/check-atomics.sh FORCE
-       $(call cmd,atomics)
+# Check the manual modification of atomic headers
+
+quiet_cmd_check_sha1 = CHKSHA1 $<
+      cmd_check_sha1 = \
+       if ! command -v sha1sum >/dev/null; then \
+               echo "warning: cannot check the header due to sha1sum missing"; \
+               exit 0; \
+       fi; \
+       if [ "$$(sed -n '$$s:// ::p' $<)" != \
+            "$$(sed '$$d' $< | sha1sum | sed 's/ .*//')" ]; then \
+               echo "error: $< has been modified." >&2; \
+               exit 1; \
+       fi; \
+       touch $@
+
+atomic-checks += $(addprefix $(obj)/.checked-, \
+         atomic-arch-fallback.h \
+         atomic-instrumented.h \
+         atomic-long.h)
+
+targets += $(atomic-checks)
+$(atomic-checks): $(obj)/.checked-%: include/linux/atomic/%  FORCE
+       $(call if_changed,check_sha1)
+
+# A phony target that depends on all the preparation targets
+
+PHONY += prepare
+prepare: $(offsets-file) missing-syscalls $(atomic-checks)
+       @:
+
+# Ordinary directory descending
+# ---------------------------------------------------------------------------
+
+obj-y                  += init/
+obj-y                  += usr/
+obj-y                  += arch/$(SRCARCH)/
+obj-y                  += $(ARCH_CORE)
+obj-y                  += kernel/
+obj-y                  += certs/
+obj-y                  += mm/
+obj-y                  += fs/
+obj-y                  += ipc/
+obj-y                  += security/
+obj-y                  += crypto/
+obj-$(CONFIG_BLOCK)    += block/
+obj-$(CONFIG_IO_URING) += io_uring/
+obj-$(CONFIG_RUST)     += rust/
+obj-y                  += $(ARCH_LIB)
+obj-y                  += drivers/
+obj-y                  += sound/
+obj-$(CONFIG_SAMPLES)  += samples/
+obj-$(CONFIG_NET)      += net/
+obj-y                  += virt/
+obj-y                  += $(ARCH_DRIVERS)