[PATCH 1/3] kbuild: allow user to assign {A,C}FLAGS_MODULE
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From: Sam Ravnborg on 26 Jul 2010 16:50 From 7ae2b4f270b0a6273072d73bbfeaa96815cc24af Mon Sep 17 00:00:00 2001 From: Sam Ravnborg <sam(a)ravnborg.org> Date: Mon, 26 Jul 2010 21:03:08 +0200 Subject: [PATCH 1/3] kbuild: allow user to assign {A,C}FLAGS_MODULE Do not use {A,C}FLAGS_MODULE in the top-level Makefile. So if user assign a value to one of these variables we the original value is not lost. Use a kbuild internal variable that archs can use. Signed-off-by: Sam Ravnborg <sam(a)ravnborg.org> Cc: Denys Vlasenko <vda.linux(a)googlemail.com> Cc: Ralf Baechle <ralf(a)linux-mips.org> Cc: Martin Schwidefsky <schwidefsky(a)de.ibm.com> Cc: Chen Liqin <liqin.chen(a)sunplusct.com> --- Makefile | 8 ++++---- arch/mips/Makefile | 4 ++-- arch/s390/Makefile | 2 +- arch/score/Makefile | 2 +- scripts/Makefile.build | 9 ++++++--- 5 files changed, 14 insertions(+), 11 deletions(-) diff --git a/Makefile b/Makefile index a14c207..5e72848 100644 --- a/Makefile +++ b/Makefile @@ -332,9 +332,8 @@ CHECK = sparse CHECKFLAGS := -D__linux__ -Dlinux -D__STDC__ -Dunix -D__unix__ \ -Wbitwise -Wno-return-void $(CF) -MODFLAGS = -DMODULE -CFLAGS_MODULE = $(MODFLAGS) -AFLAGS_MODULE = $(MODFLAGS) +CFLAGS_MODULE = +AFLAGS_MODULE = LDFLAGS_MODULE = -T $(srctree)/scripts/module-common.lds CFLAGS_KERNEL = AFLAGS_KERNEL = @@ -355,6 +354,7 @@ KBUILD_CFLAGS := -Wall -Wundef -Wstrict-prototypes -Wno-trigraphs \ -Wno-format-security \ -fno-delete-null-pointer-checks KBUILD_AFLAGS := -D__ASSEMBLY__ +KBUILD_MODFLAGS := -DMODULE # Read KERNELRELEASE from include/config/kernel.release (if it exists) KERNELRELEASE = $(shell cat include/config/kernel.release 2> /dev/null) @@ -368,7 +368,7 @@ export HOSTCXX HOSTCXXFLAGS LDFLAGS_MODULE CHECK CHECKFLAGS export KBUILD_CPPFLAGS NOSTDINC_FLAGS LINUXINCLUDE OBJCOPYFLAGS LDFLAGS export KBUILD_CFLAGS CFLAGS_KERNEL CFLAGS_MODULE CFLAGS_GCOV -export KBUILD_AFLAGS AFLAGS_KERNEL AFLAGS_MODULE +export KBUILD_AFLAGS AFLAGS_KERNEL AFLAGS_MODULE KBUILD_MODFLAGS # When compiling out-of-tree modules, put MODVERDIR in the module # tree rather than in the kernel tree. The kernel tree might diff --git a/arch/mips/Makefile b/arch/mips/Makefile index 0b9c01a..2d77a2d 100644 --- a/arch/mips/Makefile +++ b/arch/mips/Makefile @@ -93,7 +93,7 @@ all-$(CONFIG_SYS_SUPPORTS_ZBOOT)+= vmlinuz cflags-y += -G 0 -mno-abicalls -fno-pic -pipe cflags-y += -msoft-float LDFLAGS_vmlinux += -G 0 -static -n -nostdlib -MODFLAGS += -mlong-calls +KBUILD_MODFLAGS += -mlong-calls cflags-y += -ffreestanding @@ -185,7 +185,7 @@ cflags-$(CONFIG_CPU_DADDI_WORKAROUNDS) += $(call cc-option,-mno-daddi,) ifdef CONFIG_CPU_SB1 ifdef CONFIG_SB1_PASS_1_WORKAROUNDS -MODFLAGS += -msb1-pass1-workarounds +KBUILD_MODFLAGS += -msb1-pass1-workarounds endif endif diff --git a/arch/s390/Makefile b/arch/s390/Makefile index 30c5f01..16a3ef9 100644 --- a/arch/s390/Makefile +++ b/arch/s390/Makefile @@ -24,7 +24,7 @@ CHECKFLAGS += -D__s390__ -msize-long else LD_BFD := elf64-s390 LDFLAGS := -m elf64_s390 -MODFLAGS += -fpic -D__PIC__ +KBUILD_MODFLAGS += -fpic -D__PIC__ KBUILD_CFLAGS += -m64 KBUILD_AFLAGS += -m64 UTS_MACHINE := s390x diff --git a/arch/score/Makefile b/arch/score/Makefile index 68e0cd0..c667f1d 100644 --- a/arch/score/Makefile +++ b/arch/score/Makefile @@ -20,7 +20,7 @@ cflags-y += -G0 -pipe -mel -mnhwloop -D__SCOREEL__ \ # KBUILD_AFLAGS += $(cflags-y) KBUILD_CFLAGS += $(cflags-y) -MODFLAGS += -mlong-calls +KBUILD_MODFLAGS += -mlong-calls LDFLAGS += --oformat elf32-littlescore LDFLAGS_vmlinux += -G0 -static -nostdlib diff --git a/scripts/Makefile.build b/scripts/Makefile.build index 390aae4..2818802 100644 --- a/scripts/Makefile.build +++ b/scripts/Makefile.build @@ -115,7 +115,10 @@ endif # --------------------------------------------------------------------------- # Default is built-in, unless we know otherwise -modkern_cflags = $(if $(part-of-module), $(CFLAGS_MODULE), $(CFLAGS_KERNEL)) +modkern_cflags = \ + $(if $(part-of-module), \ + $(KBUILD_MODFLAGS) $(CFLAGS_MODULE), \ + $(CFLAGS_KERNEL)) quiet_modtag := $(empty) $(empty) $(real-objs-m) : part-of-module := y @@ -250,8 +253,8 @@ $(obj)/%.lst: $(src)/%.c FORCE modkern_aflags := $(AFLAGS_KERNEL) -$(real-objs-m) : modkern_aflags := $(AFLAGS_MODULE) -$(real-objs-m:.o=.s): modkern_aflags := $(AFLAGS_MODULE) +$(real-objs-m) : modkern_aflags := $(KBUILD_MODFLAGS) $(AFLAGS_MODULE) +$(real-objs-m:.o=.s): modkern_aflags := $(KBUILD_MODFLAGS) $(AFLAGS_MODULE) quiet_cmd_as_s_S = CPP $(quiet_modtag) $@ cmd_as_s_S = $(CPP) $(a_flags) -o $@ $< -- 1.6.0.6 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo(a)vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/ |