The powerpc boot wrapper is compiled with a separate "bootcc" toolchain rather than the toolchain used for the rest of the kernel. The main problem with this is that the wrapper does not have access to the kernel headers (without a lot of gross hacks). To get around this the required headers are copied into the build directory via several sed scripts which rewrite problematic includes. This patch moves these fixups out of the makefile into a separate .sed script file to clean up makefile slightly.
Signed-off-by: Oliver O'Halloran <ooh...@gmail.com> --- arch/powerpc/boot/Makefile | 18 ++++++------------ arch/powerpc/boot/fixup-headers.sed | 12 ++++++++++++ 2 files changed, 18 insertions(+), 12 deletions(-) create mode 100644 arch/powerpc/boot/fixup-headers.sed diff --git a/arch/powerpc/boot/Makefile b/arch/powerpc/boot/Makefile index 1a2a6e8dc40d..f98e42ee2534 100644 --- a/arch/powerpc/boot/Makefile +++ b/arch/powerpc/boot/Makefile @@ -125,23 +125,17 @@ obj-wlib := $(addsuffix .o, $(basename $(addprefix $(obj)/, $(src-wlib)))) obj-plat := $(addsuffix .o, $(basename $(addprefix $(obj)/, $(src-plat)))) obj-plat: $(libfdt) -quiet_cmd_copy_zlib = COPY $@ - cmd_copy_zlib = sed "s@__used@@;s@<linux/\([^>]*\).*@\"\1\"@" $< > $@ - -quiet_cmd_copy_zlibheader = COPY $@ - cmd_copy_zlibheader = sed "s@<linux/\([^>]*\).*@\"\1\"@" $< > $@ -# stddef.h for NULL -quiet_cmd_copy_zliblinuxheader = COPY $@ - cmd_copy_zliblinuxheader = sed "s@<linux/string.h>@\"string.h\"@;s@<linux/kernel.h>@<stddef.h>@;s@<linux/\([^>]*\).*@\"\1\"@" $< > $@ +quiet_cmd_copy_kern_src = COPY $@ + cmd_copy_kern_src = sed -f $(srctree)/arch/powerpc/boot/fixup-headers.sed $< > $@ $(addprefix $(obj)/,$(zlib)): $(obj)/%: $(srctree)/lib/zlib_inflate/% - $(call cmd,copy_zlib) + $(call cmd,copy_kern_src) -$(addprefix $(obj)/,$(zlibheader)): $(obj)/%: $(srctree)/lib/zlib_inflate/% - $(call cmd,copy_zlibheader) +$(addprefix $(obj)/,$(zlibheaders)): $(obj)/%: $(srctree)/lib/zlib_inflate/% + $(call cmd,copy_kern_src) $(addprefix $(obj)/,$(zliblinuxheader)): $(obj)/%: $(srctree)/include/linux/% - $(call cmd,copy_zliblinuxheader) + $(call cmd,copy_kern_src) quiet_cmd_copy_libfdt = COPY $@ cmd_copy_libfdt = cp $< $@ diff --git a/arch/powerpc/boot/fixup-headers.sed b/arch/powerpc/boot/fixup-headers.sed new file mode 100644 index 000000000000..96362428eb37 --- /dev/null +++ b/arch/powerpc/boot/fixup-headers.sed @@ -0,0 +1,12 @@ +# Copyright 2016 IBM Corporation. +# +# This program is free software; you can redistribute it and/or modify it +# under the terms of the GNU General Public License version 2 or later as +# published by the Free Software Foundation. + +s@#include <linux/decompress/mm\.h>@@; +s@\"zlib_inflate/\([^\"]*\).*@"\1"@; +s@<linux/kernel.h>@<stddef.h>@; + +s@__used@@; +s@<linux/\([^>]*\).*@"\1"@; -- 2.5.5