kbuild: drop support of ALTARCH for headers_*

ALTARCH is no longer used by any arch(*) so drop
support for this from Makefile.headerinst

Dropping ALTARCH support simplifies Makefile.headerinst

(*) sparc64 uses it but work is ongoing to drop it
and no furter usage is planned.

Signed-off-by: Sam Ravnborg <sam@ravnborg.org>
Cc: David Woodhouse <dwmw2@infradead.org>
Cc: David Miller <davem@davemloft.net>

1 files changed, 9 insertions, 75 deletions

diff --git a/scripts/Makefile.headersinst b/scripts/Makefile.headersinst
index 22b17af0902f..1fb8c003920f 100644
--- a/scripts/Makefile.headersinst
+++ b/scripts/Makefile.headersinst
@@ -23,30 +23,17 @@ HDRSED  := sed 	-e "s/ inline / __inline__ /g" \
 
 _dst := $(if $(dst),$(dst),$(obj))
 
-ifeq (,$(patsubst include/asm/%,,$(obj)/))
-# For producing the generated stuff in include/asm for biarch builds, include
-# both sets of Kbuild files; we'll generate anything which is mentioned in
-# _either_ arch, and recurse into subdirectories which are mentioned in either
-# arch. Since some directories may exist in one but not the other, we must
-# use $(wildcard...). 
-GENASM := 1
-archasm    := $(subst include/asm,asm-$(ARCH),$(obj))
-altarchasm := $(subst include/asm,asm-$(ALTARCH),$(obj))
-KBUILDFILES := $(wildcard $(srctree)/include/$(archasm)/Kbuild $(srctree)/include/$(altarchasm)/Kbuild)
-else
-KBUILDFILES := $(srctree)/$(obj)/Kbuild
-endif
+kbuild-file := $(srctree)/$(obj)/Kbuild
+include $(kbuild-file)
 
-include $(KBUILDFILES)
+include scripts/Kbuild.include
 
-include scripts/Kbuild.include 
-
-# If this is include/asm-$(ARCH) and there's no $(ALTARCH), then
-# override $(_dst) so that we install to include/asm directly.
+# If this is include/asm-$(ARCH) then override $(_dst) so that
+# we install to include/asm directly.
 # Unless $(BIASMDIR) is set, in which case we're probably doing
 # a 'headers_install_all' build and we should keep the -$(ARCH)
 # in the directory name.
-ifeq ($(obj)$(ALTARCH),include/asm-$(ARCH)$(BIASMDIR))
+ifeq ($(obj),include/asm-$(ARCH)$(BIASMDIR))
      _dst := include/asm
 endif
 
@@ -69,18 +56,6 @@ header-y 	:= $(patsubst %,$(INSTALL_HDR_PATH)/$(_dst)/%,$(header-y))
 objhdr-y        := $(patsubst %,$(INSTALL_HDR_PATH)/$(_dst)/%,$(objhdr-y))
 check-y         := $(patsubst %,$(INSTALL_HDR_PATH)/$(_dst)/%,$(check-y))
 
-
-ifdef ALTARCH
-ifeq ($(obj),include/asm-$(ARCH))
-altarch-y       := altarch-dir
-endif
-endif
-
-# Make the definitions visible for recursive make invocations
-export ALTARCH
-export ARCHDEF
-export ALTARCHDEF
-
 quiet_cmd_o_hdr_install   = INSTALL $(patsubst $(INSTALL_HDR_PATH)/%,%,$@)
       cmd_o_hdr_install   = cp $(patsubst $(INSTALL_HDR_PATH)/$(_dst)/%,$(objtree)/$(obj)/%,$@) \
                             $(INSTALL_HDR_PATH)/$(_dst)
@@ -99,34 +74,6 @@ quiet_cmd_remove	  = REMOVE  $(_dst)/$@
 quiet_cmd_mkdir           = MKDIR   $(patsubst $(INSTALL_HDR_PATH)/%,%,$@)
       cmd_mkdir           = mkdir -p $@
 
-quiet_cmd_gen             = GEN     $(patsubst $(INSTALL_HDR_PATH)/%,%,$@)
-      cmd_gen             = \
-FNAME=$(patsubst $(INSTALL_HDR_PATH)/$(_dst)/%,%,$@);                   \
-STUBDEF=__ASM_STUB_`echo $$FNAME | tr a-z.- A-Z__`;                     \
-(echo "/* File autogenerated by 'make headers_install' */" ;            \
-echo "\#ifndef $$STUBDEF" ;                                             \
-echo "\#define $$STUBDEF" ;                                             \
-echo "\# if $(ARCHDEF)" ;                                               \
-if [ -r $(subst /$(_dst)/,/include/$(archasm)/,$@) ]; then              \
-        echo "\#  include <$(archasm)/$$FNAME>" ;                       \
-else                                                                    \
-        echo "\#  error $(archasm)/$$FNAME does not exist in"           \
-                        "the $(ARCH) architecture" ;                    \
-fi ;                                                                    \
-echo "\# elif $(ALTARCHDEF)" ;                                          \
-if [ -r $(subst /$(_dst)/,/include/$(altarchasm)/,$@) ]; then           \
-        echo "\#  include <$(altarchasm)/$$FNAME>" ;                    \
-else                                                                    \
-        echo "\#  error $(altarchasm)/$$FNAME does not exist in"        \
-                        "the $(ALTARCH) architecture" ;                 \
-fi ;                                                                    \
-echo "\# else" ;                                                        \
-echo "\#  warning This machine appears to be"                           \
-                 "neither $(ARCH) nor $(ALTARCH)." ;                    \
-echo "\# endif" ;                                                       \
-echo "\#endif /* $$STUBDEF */" ;                                        \
-) > $@
-
 .PHONY: __headersinst __headerscheck
 
 ifdef HDRCHECK
@@ -144,7 +91,7 @@ include /dev/null $(wildcard $(check-y))
 
 else
 # Rules for installing headers
-__headersinst: $(subdir-y) $(header-y) $(altarch-y) $(objhdr-y)
+__headersinst: $(subdir-y) $(header-y) $(objhdr-y)
         @true
 
 $(objhdr-y) $(subdir-y) $(header-y): | $(INSTALL_HDR_PATH)/$(_dst) $(unwanted)
@@ -156,29 +103,16 @@ $(INSTALL_HDR_PATH)/$(_dst):
 $(unwanted):
         $(call cmd,remove)
 
-ifdef GENASM
-$(objhdr-y) $(header-y): $(KBUILDFILES)
-        $(call cmd,gen)
-
-else
-$(objhdr-y): $(INSTALL_HDR_PATH)/$(_dst)/%.h: $(objtree)/$(obj)/%.h $(KBUILDFILES)
+$(objhdr-y): $(INSTALL_HDR_PATH)/$(_dst)/%.h: $(objtree)/$(obj)/%.h $(kbuild-file)
         $(call cmd,o_hdr_install)
 
-$(header-y): $(INSTALL_HDR_PATH)/$(_dst)/%.h: $(srctree)/$(obj)/%.h $(KBUILDFILES)
+$(header-y): $(INSTALL_HDR_PATH)/$(_dst)/%.h: $(srctree)/$(obj)/%.h $(kbuild-file)
         $(call cmd,unifdef)
 
 endif
-endif
 
 hdrinst := -rR -f $(srctree)/scripts/Makefile.headersinst obj
 
-.PHONY: altarch-dir
-# All the files in the normal arch dir must be created first, since we test
-# for their existence.
-altarch-dir: $(subdir-y) $(header-y) $(objhdr-y)
-        $(Q)$(MAKE) $(hdrinst)=include/asm-$(ALTARCH) dst=include/asm-$(ALTARCH)
-        $(Q)$(MAKE) $(hdrinst)=include/asm dst=include/asm$(BIASMDIR)
-
 # Recursion
 .PHONY: $(subdir-y)
 $(subdir-y):