From 0126be38d98815d25d9ec4573541ed4315bf6a88 Mon Sep 17 00:00:00 2001 From: Masahiro Yamada Date: Wed, 21 Nov 2018 00:04:18 +0900 Subject: kbuild: announce removal of SUBDIRS if used SUBDIRS has been kept as a backward compatibility since commit ("[PATCH] kbuild: external module support") in 2002. We do not need multiple ways to do the same thing, so I will remove SUBDIRS after the Linux 5.3 release. I cleaned up in-tree code, and updated the document so that nobody would try to use it. Meanwhile, display the following warning if SUBDIRS is used. Makefile:189: ================= WARNING ================ Makefile:190: 'SUBDIRS' will be removed after Linux 5.3 Makefile:191: Please use 'M=' or 'KBUILD_EXTMOD' instead Makefile:192: ========================================== Signed-off-by: Masahiro Yamada Acked-by: Boris Brezillon # for scx200_docflash.c Acked-by: Guenter Roeck # for scx200_wdt.c --- samples/connector/Makefile | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'samples') diff --git a/samples/connector/Makefile b/samples/connector/Makefile index fe3c8542ae4a..6ad71620e503 100644 --- a/samples/connector/Makefile +++ b/samples/connector/Makefile @@ -14,4 +14,4 @@ HOSTCFLAGS_ucon.o += -I$(objtree)/usr/include all: modules modules clean: - $(MAKE) -C ../.. SUBDIRS=$(CURDIR) $@ + $(MAKE) -C ../.. M=$(CURDIR) $@ -- cgit v1.2.3-59-g8ed1b From 4d4b5c2e3b6e6137c36cc13fe0d03404205afbd0 Mon Sep 17 00:00:00 2001 From: Masahiro Yamada Date: Sat, 22 Dec 2018 18:50:33 +0900 Subject: treewide: remove explicit rules for *offsets.s These explicit rules are unneeded because scripts/Makefile.build provides a pattern rule to create %.s from %.c Signed-off-by: Masahiro Yamada --- Kbuild | 9 +-------- arch/arm/mach-at91/Makefile | 3 --- arch/arm/mach-omap2/Makefile | 3 --- arch/ia64/kernel/Makefile | 5 ----- drivers/memory/Makefile.asm-offsets | 3 --- samples/bpf/Makefile | 3 --- 6 files changed, 1 insertion(+), 25 deletions(-) (limited to 'samples') diff --git a/Kbuild b/Kbuild index 005304205482..b24210cb4dfe 100644 --- a/Kbuild +++ b/Kbuild @@ -16,10 +16,6 @@ bounds-file := include/generated/bounds.h always := $(bounds-file) targets := kernel/bounds.s -# We use internal kbuild rules to avoid the "is up to date" message from make -kernel/bounds.s: kernel/bounds.c FORCE - $(call if_changed_dep,cc_s_c) - $(obj)/$(bounds-file): kernel/bounds.s FORCE $(call filechk,offsets,__LINUX_BOUNDS_H__) @@ -50,10 +46,7 @@ offsets-file := include/generated/asm-offsets.h always += $(offsets-file) targets += arch/$(SRCARCH)/kernel/asm-offsets.s -# 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 \ - $(obj)/$(timeconst-file) $(obj)/$(bounds-file) FORCE - $(call if_changed_dep,cc_s_c) +arch/$(SRCARCH)/kernel/asm-offsets.s: $(obj)/$(timeconst-file) $(obj)/$(bounds-file) $(obj)/$(offsets-file): arch/$(SRCARCH)/kernel/asm-offsets.s FORCE $(call filechk,offsets,__ASM_OFFSETS_H__) diff --git a/arch/arm/mach-at91/Makefile b/arch/arm/mach-at91/Makefile index 7415f181907b..f87066b60836 100644 --- a/arch/arm/mach-at91/Makefile +++ b/arch/arm/mach-at91/Makefile @@ -19,9 +19,6 @@ ifeq ($(CONFIG_PM_DEBUG),y) CFLAGS_pm.o += -DDEBUG endif -arch/arm/mach-at91/pm_data-offsets.s: arch/arm/mach-at91/pm_data-offsets.c - $(call if_changed_dep,cc_s_c) - include/generated/at91_pm_data-offsets.h: arch/arm/mach-at91/pm_data-offsets.s FORCE $(call filechk,offsets,__PM_DATA_OFFSETS_H__) diff --git a/arch/arm/mach-omap2/Makefile b/arch/arm/mach-omap2/Makefile index 01377c292db4..55c482c2bab1 100644 --- a/arch/arm/mach-omap2/Makefile +++ b/arch/arm/mach-omap2/Makefile @@ -236,9 +236,6 @@ obj-y += omap_phy_internal.o obj-$(CONFIG_MACH_OMAP2_TUSB6010) += usb-tusb6010.o -arch/arm/mach-omap2/pm-asm-offsets.s: arch/arm/mach-omap2/pm-asm-offsets.c - $(call if_changed_dep,cc_s_c) - include/generated/ti-pm-asm-offsets.h: arch/arm/mach-omap2/pm-asm-offsets.s FORCE $(call filechk,offsets,__TI_PM_ASM_OFFSETS_H__) diff --git a/arch/ia64/kernel/Makefile b/arch/ia64/kernel/Makefile index d0c0ccdd656a..7372d994b44e 100644 --- a/arch/ia64/kernel/Makefile +++ b/arch/ia64/kernel/Makefile @@ -50,10 +50,5 @@ CFLAGS_traps.o += -mfixed-range=f2-f5,f16-f31 # The gate DSO image is built using a special linker script. include $(src)/Makefile.gate -# We use internal kbuild rules to avoid the "is up to date" message from make -arch/$(SRCARCH)/kernel/nr-irqs.s: arch/$(SRCARCH)/kernel/nr-irqs.c - $(Q)mkdir -p $(dir $@) - $(call if_changed_dep,cc_s_c) - include/generated/nr-irqs.h: arch/$(SRCARCH)/kernel/nr-irqs.s FORCE $(call filechk,offsets,__ASM_NR_IRQS_H__) diff --git a/drivers/memory/Makefile.asm-offsets b/drivers/memory/Makefile.asm-offsets index 843ff60ccb5a..f968dfa71d8e 100644 --- a/drivers/memory/Makefile.asm-offsets +++ b/drivers/memory/Makefile.asm-offsets @@ -1,5 +1,2 @@ -drivers/memory/emif-asm-offsets.s: drivers/memory/emif-asm-offsets.c - $(call if_changed_dep,cc_s_c) - include/generated/ti-emif-asm-offsets.h: drivers/memory/emif-asm-offsets.s FORCE $(call filechk,offsets,__TI_EMIF_ASM_OFFSETS_H__) diff --git a/samples/bpf/Makefile b/samples/bpf/Makefile index be0a961450bc..100a49d35c77 100644 --- a/samples/bpf/Makefile +++ b/samples/bpf/Makefile @@ -227,9 +227,6 @@ $(LIBBPF): FORCE # Fix up variables inherited from Kbuild that tools/ build system won't like $(MAKE) -C $(dir $@) RM='rm -rf' LDFLAGS= srctree=$(BPF_SAMPLES_PATH)/../../ O= -$(obj)/syscall_nrs.s: $(src)/syscall_nrs.c - $(call if_changed_dep,cc_s_c) - $(obj)/syscall_nrs.h: $(obj)/syscall_nrs.s FORCE $(call filechk,offsets,__SYSCALL_NRS_H__) -- cgit v1.2.3-59-g8ed1b From 2c667d77fc02dd453c49b9c29d08a8bb55d60ebe Mon Sep 17 00:00:00 2001 From: Masahiro Yamada Date: Sat, 22 Dec 2018 18:50:34 +0900 Subject: treewide: add intermediate .s files to targets Avoid unneeded recreation of these in the incremental build. Signed-off-by: Masahiro Yamada --- arch/arm/mach-at91/Makefile | 2 ++ arch/arm/mach-omap2/Makefile | 2 ++ arch/ia64/kernel/Makefile | 2 ++ arch/x86/um/Makefile | 1 + drivers/memory/Makefile.asm-offsets | 2 ++ samples/bpf/Makefile | 1 + 6 files changed, 10 insertions(+) (limited to 'samples') diff --git a/arch/arm/mach-at91/Makefile b/arch/arm/mach-at91/Makefile index f87066b60836..31b61f0e1c07 100644 --- a/arch/arm/mach-at91/Makefile +++ b/arch/arm/mach-at91/Makefile @@ -23,3 +23,5 @@ include/generated/at91_pm_data-offsets.h: arch/arm/mach-at91/pm_data-offsets.s F $(call filechk,offsets,__PM_DATA_OFFSETS_H__) arch/arm/mach-at91/pm_suspend.o: include/generated/at91_pm_data-offsets.h + +targets += pm_data-offsets.s diff --git a/arch/arm/mach-omap2/Makefile b/arch/arm/mach-omap2/Makefile index 55c482c2bab1..4afdf56964c9 100644 --- a/arch/arm/mach-omap2/Makefile +++ b/arch/arm/mach-omap2/Makefile @@ -240,3 +240,5 @@ include/generated/ti-pm-asm-offsets.h: arch/arm/mach-omap2/pm-asm-offsets.s FORC $(call filechk,offsets,__TI_PM_ASM_OFFSETS_H__) $(obj)/sleep33xx.o $(obj)/sleep43xx.o: include/generated/ti-pm-asm-offsets.h + +targets += pm-asm-offsets.s diff --git a/arch/ia64/kernel/Makefile b/arch/ia64/kernel/Makefile index 7372d994b44e..4ba05140b249 100644 --- a/arch/ia64/kernel/Makefile +++ b/arch/ia64/kernel/Makefile @@ -52,3 +52,5 @@ include $(src)/Makefile.gate include/generated/nr-irqs.h: arch/$(SRCARCH)/kernel/nr-irqs.s FORCE $(call filechk,offsets,__ASM_NR_IRQS_H__) + +targets += nr-irqs.s diff --git a/arch/x86/um/Makefile b/arch/x86/um/Makefile index 17924646467c..2d686ae54681 100644 --- a/arch/x86/um/Makefile +++ b/arch/x86/um/Makefile @@ -38,6 +38,7 @@ USER_OBJS := bugs_$(BITS).o ptrace_user.o fault.o $(obj)/user-offsets.s: c_flags = -Wp,-MD,$(depfile) $(USER_CFLAGS) \ -Iarch/x86/include/generated +targets += user-offsets.s include/generated/user_constants.h: $(obj)/user-offsets.s $(call filechk,offsets,__USER_CONSTANT_H__) diff --git a/drivers/memory/Makefile.asm-offsets b/drivers/memory/Makefile.asm-offsets index f968dfa71d8e..0447e174c752 100644 --- a/drivers/memory/Makefile.asm-offsets +++ b/drivers/memory/Makefile.asm-offsets @@ -1,2 +1,4 @@ include/generated/ti-emif-asm-offsets.h: drivers/memory/emif-asm-offsets.s FORCE $(call filechk,offsets,__TI_EMIF_ASM_OFFSETS_H__) + +targets += emif-asm-offsets.s diff --git a/samples/bpf/Makefile b/samples/bpf/Makefile index 100a49d35c77..82d5a3870460 100644 --- a/samples/bpf/Makefile +++ b/samples/bpf/Makefile @@ -230,6 +230,7 @@ $(LIBBPF): FORCE $(obj)/syscall_nrs.h: $(obj)/syscall_nrs.s FORCE $(call filechk,offsets,__SYSCALL_NRS_H__) +targets += syscall_nrs.s clean-files += syscall_nrs.h FORCE: -- cgit v1.2.3-59-g8ed1b