Don't advertise (or allow) headers_{install,check} where inappropriate.

For architectures which don't have the include/asm-$(ARCH)/Kbuild file,
like ARM26, UM, etc.

Signed-off-by: David Woodhouse <dwmw2@infradead.org>

diff --git a/Makefile b/Makefile
index edfc2fdf76c9542a7bbc66516d09f65511463f59..33074e834e9c9366c2245e6fc6afdf937bf5e33d 100644 (file)
--- a/Makefile
+++ b/Makefile
@@ -894,6 +894,9 @@ export INSTALL_HDR_PATH
 
 PHONY += headers_install
 headers_install: include/linux/version.h
+       @if [ ! -r include/asm-$(ARCH)/Kbuild ]; then \
+         echo '*** Error: Headers not exportable for this architecture ($(ARCH))'; \
+         exit 1 ; fi
        $(Q)unifdef -Ux /dev/null
        $(Q)rm -rf $(INSTALL_HDR_PATH)/include
        $(Q)$(MAKE) -rR -f $(srctree)/scripts/Makefile.headersinst obj=include
@@ -1076,13 +1079,17 @@ help:
        @echo  '  cscope          - Generate cscope index'
        @echo  '  kernelrelease   - Output the release version string'
        @echo  '  kernelversion   - Output the version stored in Makefile'
-       @echo  '  headers_install - Install sanitised kernel headers to INSTALL_HDR_PATH'
+       @if [ -r include/asm-$(ARCH)/Kbuild ]; then \
+        echo  '  headers_install - Install sanitised kernel headers to INSTALL_HDR_PATH'; \
+        fi
        @echo  '                    (default: $(INSTALL_HDR_PATH))'
        @echo  ''
        @echo  'Static analysers'
        @echo  '  checkstack      - Generate a list of stack hogs'
        @echo  '  namespacecheck  - Name space analysis on compiled kernel'
-       @echo  '  headers_check   - Sanity check on exported headers'
+       @if [ -r include/asm-$(ARCH)/Kbuild ]; then \
+        echo  '  headers_check   - Sanity check on exported headers'; \
+        fi
        @echo  ''
        @echo  'Kernel packaging:'
        @$(MAKE) $(build)=$(package-dir) help