From: Ben Hutchings <ben@decadent.org.uk>
Date: Wed, 09 Sep 2015 01:24:56 +0100
Subject: Install headers with consistent mode
Forwarded: http://www.zytor.com/pipermail/klibc/2016-January/003891.html

Currently we ensure the installed headers are readable by everyone,
but write permissions will depend on the current umask.  Turn off the
group and other writable bits to ensure consistent results.

Signed-off-by: Ben Hutchings <ben@decadent.org.uk>
---
--- a/scripts/Kbuild.install
+++ b/scripts/Kbuild.install
@@ -102,7 +102,7 @@ header:
 		ln -sf /usr/include/$(DEB_HOST_MULTIARCH)/asm $(INSTALLROOT)$(INSTALLDIR)/$(KCROSS)include/ || exit; \
 	fi
 	$(Q)cp -rf usr/include/. $(INSTALLROOT)$(INSTALLDIR)/$(KCROSS)include/.
-	$(Q)chmod -R a+rX $(INSTALLROOT)$(INSTALLDIR)/$(KCROSS)include
+	$(Q)chmod -R a+rX,go-w $(INSTALLROOT)$(INSTALLDIR)/$(KCROSS)include
 	$(Q)$(install-data) $(srctree)/klcc/klcc.1 $(INSTALLROOT)$(mandir)/man1/$(KCROSS)klcc.1
 	$(Q)$(install-bin) $(objtree)/klcc/$(KCROSS)klcc $(INSTALLROOT)$(bindir)