diff options
Diffstat (limited to 'Kbuild')
| -rw-r--r-- | Kbuild | 62 |
1 files changed, 51 insertions, 11 deletions
@@ -1,26 +1,61 @@ # # Kbuild for top-level directory of the kernel # This file takes care of the following: -# 1) Generate asm-offsets.h -# 2) Check for missing system calls +# 1) Generate bounds.h +# 2) Generate asm-offsets.h (may need bounds.h) +# 3) Check for missing system calls ##### -# 1) Generate asm-offsets.h +# 1) Generate bounds.h + +bounds-file := include/linux/bounds.h + +always := $(bounds-file) +targets := $(bounds-file) kernel/bounds.s + +quiet_cmd_bounds = GEN $@ +define cmd_bounds + (set -e; \ + echo "#ifndef __LINUX_BOUNDS_H__"; \ + echo "#define __LINUX_BOUNDS_H__"; \ + echo "/*"; \ + echo " * DO NOT MODIFY."; \ + echo " *"; \ + echo " * This file was generated by Kbuild"; \ + echo " *"; \ + echo " */"; \ + echo ""; \ + sed -ne $(sed-y) $<; \ + echo ""; \ + echo "#endif" ) > $@ +endef + +# We use internal kbuild rules to avoid the "is up to date" message from make +kernel/bounds.s: kernel/bounds.c FORCE + $(Q)mkdir -p $(dir $@) + $(call if_changed_dep,cc_s_c) + +$(obj)/$(bounds-file): kernel/bounds.s Kbuild + $(Q)mkdir -p $(dir $@) + $(call cmd,bounds) + +##### +# 2) Generate asm-offsets.h # offsets-file := include/asm-$(SRCARCH)/asm-offsets.h -always := $(offsets-file) -targets := $(offsets-file) +always += $(offsets-file) +targets += $(offsets-file) targets += arch/$(SRCARCH)/kernel/asm-offsets.s -clean-files := $(addprefix $(objtree)/,$(targets)) + # Default sed regexp - multiline due to syntax constraints define sed-y - "/^->/{s:^->\([^ ]*\) [\$$#]*\([^ ]*\) \(.*\):#define \1 \2 /* \3 */:; s:->::; p;}" + "/^->/{s:->#\(.*\):/* \1 */:; \ + s:^->\([^ ]*\) [\$$#]*\([^ ]*\) \(.*\):#define \1 \2 /* \3 */:; \ + s:->::; p;}" endef -# Override default regexp for specific architectures -sed-$(CONFIG_MIPS) := "/^@@@/{s/^@@@//; s/ \#.*\$$//; p;}" quiet_cmd_offsets = GEN $@ define cmd_offsets @@ -40,7 +75,8 @@ define cmd_offsets endef # We use internal kbuild rules to avoid the "is up to date" message from make -arch/$(SRCARCH)/kernel/asm-offsets.s: arch/$(SRCARCH)/kernel/asm-offsets.c FORCE +arch/$(SRCARCH)/kernel/asm-offsets.s: arch/$(SRCARCH)/kernel/asm-offsets.c \ + $(obj)/$(bounds-file) FORCE $(Q)mkdir -p $(dir $@) $(call if_changed_dep,cc_s_c) @@ -49,7 +85,7 @@ $(obj)/$(offsets-file): arch/$(SRCARCH)/kernel/asm-offsets.s Kbuild $(call cmd,offsets) ##### -# 2) Check for missing system calls +# 3) Check for missing system calls # quiet_cmd_syscalls = CALL $< @@ -58,3 +94,7 @@ quiet_cmd_syscalls = CALL $< PHONY += missing-syscalls missing-syscalls: scripts/checksyscalls.sh FORCE $(call cmd,syscalls) + +# Delete all targets during make clean +clean-files := $(addprefix $(objtree)/,$(targets)) + |