Use filechk to generate asm-offsets.h and bounds.h. Reported-by: Valdis Kletnieks <Valdis.Kletnieks@xxxxxx> Reviewed-by: Masahiro Yamada <yamada.masahiro@xxxxxxxxxxxxx> Signed-off-by: Michal Marek <mmarek@xxxxxxx> --- Kbuild | 18 +++++++++--------- 1 file changed, 9 insertions(+), 9 deletions(-) diff --git a/Kbuild b/Kbuild index ab8ded9..96d0629 100644 --- a/Kbuild +++ b/Kbuild @@ -13,8 +13,9 @@ define sed-y s:->::; p;}" endef -quiet_cmd_offsets = GEN $@ -define cmd_offsets +# 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"; \ @@ -24,9 +25,9 @@ define cmd_offsets echo " * This file was generated by Kbuild"; \ echo " */"; \ echo ""; \ - sed -ne $(sed-y) $<; \ + sed -ne $(sed-y); \ echo ""; \ - echo "#endif" ) > $@ + echo "#endif" ) endef ##### @@ -42,9 +43,8 @@ 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 $@) - $(call cmd,offsets,__LINUX_BOUNDS_H__) +$(obj)/$(bounds-file): kernel/bounds.s FORCE + $(call filechk,offsets,__LINUX_BOUNDS_H__) ##### # 2) Generate asm-offsets.h @@ -62,8 +62,8 @@ arch/$(SRCARCH)/kernel/asm-offsets.s: arch/$(SRCARCH)/kernel/asm-offsets.c \ $(Q)mkdir -p $(dir $@) $(call if_changed_dep,cc_s_c) -$(obj)/$(offsets-file): arch/$(SRCARCH)/kernel/asm-offsets.s Kbuild - $(call cmd,offsets,__ASM_OFFSETS_H__) +$(obj)/$(offsets-file): arch/$(SRCARCH)/kernel/asm-offsets.s FORCE + $(call filechk,offsets,__ASM_OFFSETS_H__) ##### # 3) Check for missing system calls -- 2.1.4 -- To unsubscribe from this list: send the line "unsubscribe linux-kbuild" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
