From 720097d895956c0bf15b8440f7845159a04b74da Mon Sep 17 00:00:00 2001 From: Sam Ravnborg Date: Sun, 19 Apr 2009 11:04:26 +0200 Subject: kbuild: introduce subdir-ccflags-y Following patch introduce support for setting options to gcc that has effect for current directory and all subdirectories. The typical use case are an architecture or a subsystem that decide to cover all files with -Werror. Today alpha, mips and sparc uses -Werror in almost all their Makefile- with subdir-ccflag-y it is now simpler to do so as only the top-level directories needs to be covered. Likewise if we decide to cover a full subsystem such as net/ with -Werror this is done by adding a single line to net/Makefile. Signed-off-by: Sam Ravnborg Cc: Ingo Molnar Cc: "H. Peter Anvin" Cc: Thomas Gleixner --- scripts/Makefile.build | 3 +++ scripts/Makefile.lib | 9 +++++++-- 2 files changed, 10 insertions(+), 2 deletions(-) (limited to 'scripts') diff --git a/scripts/Makefile.build b/scripts/Makefile.build index 39a9642927d3..5c4b7a400c18 100644 --- a/scripts/Makefile.build +++ b/scripts/Makefile.build @@ -27,6 +27,9 @@ ccflags-y := cppflags-y := ldflags-y := +subdir-asflags-y := +subdir-ccflags-y := + # Read auto.conf if it exists, otherwise ignore -include include/config/auto.conf diff --git a/scripts/Makefile.lib b/scripts/Makefile.lib index 979619574f70..cba61ca403ca 100644 --- a/scripts/Makefile.lib +++ b/scripts/Makefile.lib @@ -4,6 +4,11 @@ ccflags-y += $(EXTRA_CFLAGS) cppflags-y += $(EXTRA_CPPFLAGS) ldflags-y += $(EXTRA_LDFLAGS) +# +# flags that take effect in sub directories +export KBUILD_SUBDIR_ASFLAGS := $(KBUILD_SUBDIR_ASFLAGS) $(subdir-asflags-y) +export KBUILD_SUBDIR_CCFLAGS := $(KBUILD_SUBDIR_CCFLAGS) $(subdir-ccflags-y) + # Figure out what we need to build from the various variables # =========================================================================== @@ -104,10 +109,10 @@ else debug_flags = endif -orig_c_flags = $(KBUILD_CPPFLAGS) $(KBUILD_CFLAGS) \ +orig_c_flags = $(KBUILD_CPPFLAGS) $(KBUILD_CFLAGS) $(KBUILD_SUBDIR_CCFLAGS) \ $(ccflags-y) $(CFLAGS_$(basetarget).o) _c_flags = $(filter-out $(CFLAGS_REMOVE_$(basetarget).o), $(orig_c_flags)) -_a_flags = $(KBUILD_CPPFLAGS) $(KBUILD_AFLAGS) \ +_a_flags = $(KBUILD_CPPFLAGS) $(KBUILD_AFLAGS) $(KBUILD_SUBDIR_ASFLAGS) \ $(asflags-y) $(AFLAGS_$(basetarget).o) _cpp_flags = $(KBUILD_CPPFLAGS) $(cppflags-y) $(CPPFLAGS_$(@F)) -- cgit v1.2.3