Merge tag 'kbuild-v4.19' of git://git.kernel.org/pub/scm/linux/kernel/git/masahiroy/linux-kbuild

Pull Kbuild updates from Masahiro Yamada:

 - verify depmod is installed before modules_install

 - support build salt in case build ids must be unique between builds

 - allow users to specify additional host compiler flags via HOST*FLAGS,
   and rename internal variables to KBUILD_HOST*FLAGS

 - update buildtar script to drop vax support, add arm64 support

 - update builddeb script for better debarch support

 - document the pit-fall of if_changed usage

 - fix parallel build of UML with O= option

 - make 'samples' target depend on headers_install to fix build errors

 - remove deprecated host-progs variable

 - add a new coccinelle script for refcount_t vs atomic_t check

 - improve double-test coccinelle script

 - misc cleanups and fixes

* tag 'kbuild-v4.19' of git://git.kernel.org/pub/scm/linux/kernel/git/masahiroy/linux-kbuild: (41 commits)
  coccicheck: return proper error code on fail
  Coccinelle: doubletest: reduce side effect false positives
  kbuild: remove deprecated host-progs variable
  kbuild: make samples really depend on headers_install
  um: clean up archheaders recipe
  kbuild: add %asm-generic to no-dot-config-targets
  um: fix parallel building with O= option
  scripts: Add Python 3 support to tracing/draw_functrace.py
  builddeb: Add automatic support for sh{3,4}{,eb} architectures
  builddeb: Add automatic support for riscv* architectures
  builddeb: Add automatic support for m68k architecture
  builddeb: Add automatic support for or1k architecture
  builddeb: Add automatic support for sparc64 architecture
  builddeb: Add automatic support for mips{,64}r6{,el} architectures
  builddeb: Add automatic support for mips64el architecture
  builddeb: Add automatic support for ppc64 and powerpcspe architectures
  builddeb: Introduce functions to simplify kconfig tests in set_debarch
  builddeb: Drop check for 32-bit s390
  builddeb: Change architecture detection fallback to use dpkg-architecture
  builddeb: Skip architecture detection when KBUILD_DEBARCH is set
  ...

1 files changed, 50 insertions, 18 deletions

diff --git a/scripts/package/mkdebian b/scripts/package/mkdebian
index 985d72d1ab34..663a7f343b42 100755
--- a/scripts/package/mkdebian
+++ b/scripts/package/mkdebian
@@ -6,49 +6,81 @@
 
 set -e
 
+is_enabled() {
+	grep -q "^CONFIG_$1=y" $KCONFIG_CONFIG
+}
+
+if_enabled_echo() {
+	if is_enabled "$1"; then
+		echo -n "$2"
+	elif [ $# -ge 3 ]; then
+		echo -n "$3"
+	fi
+}
+
 set_debarch() {
+	if [ -n "$KBUILD_DEBARCH" ] ; then
+		debarch="$KBUILD_DEBARCH"
+		return
+	fi
+
 	# Attempt to find the correct Debian architecture
 	case "$UTS_MACHINE" in
-	i386|ia64|alpha)
+	i386|ia64|alpha|m68k|riscv*)
 		debarch="$UTS_MACHINE" ;;
 	x86_64)
 		debarch=amd64 ;;
 	sparc*)
-		debarch=sparc ;;
+		debarch=sparc$(if_enabled_echo 64BIT 64) ;;
 	s390*)
-		debarch=s390$(grep -q CONFIG_64BIT=y $KCONFIG_CONFIG && echo x || true) ;;
+		debarch=s390x ;;
 	ppc*)
-		debarch=$(grep -q CPU_LITTLE_ENDIAN=y $KCONFIG_CONFIG && echo ppc64el || echo powerpc) ;;
+		if is_enabled 64BIT; then
+			debarch=ppc64$(if_enabled_echo CPU_LITTLE_ENDIAN el)
+		else
+			debarch=powerpc$(if_enabled_echo SPE spe)
+		fi
+		;;
 	parisc*)
 		debarch=hppa ;;
 	mips*)
-		debarch=mips$(grep -q CPU_LITTLE_ENDIAN=y $KCONFIG_CONFIG && echo el || true) ;;
+		if is_enabled CPU_LITTLE_ENDIAN; then
+			debarch=mips$(if_enabled_echo 64BIT 64)$(if_enabled_echo CPU_MIPSR6 r6)el
+		elif is_enabled CPU_MIPSR6; then
+			debarch=mips$(if_enabled_echo 64BIT 64)r6
+		else
+			debarch=mips
+		fi
+		;;
 	aarch64|arm64)
 		debarch=arm64 ;;
 	arm*)
-		if grep -q CONFIG_AEABI=y $KCONFIG_CONFIG; then
-		    if grep -q CONFIG_VFP=y $KCONFIG_CONFIG; then
-			debarch=armhf
-		    else
-			debarch=armel
-		    fi
+		if is_enabled AEABI; then
+			debarch=arm$(if_enabled_echo VFP hf el)
 		else
-		    debarch=arm
+			debarch=arm
+		fi
+		;;
+	openrisc)
+		debarch=or1k ;;
+	sh)
+		if is_enabled CPU_SH3; then
+			debarch=sh3$(if_enabled_echo CPU_BIG_ENDIAN eb)
+		elif is_enabled CPU_SH4; then
+			debarch=sh4$(if_enabled_echo CPU_BIG_ENDIAN eb)
 		fi
 		;;
-	*)
-		debarch=$(dpkg --print-architecture)
+	esac
+	if [ -z "$debarch" ]; then
+		debarch=$(dpkg-architecture -qDEB_HOST_ARCH)
 		echo "" >&2
 		echo "** ** **  WARNING  ** ** **" >&2
 		echo "" >&2
 		echo "Your architecture doesn't have its equivalent" >&2
 		echo "Debian userspace architecture defined!" >&2
-		echo "Falling back to using your current userspace instead!" >&2
+		echo "Falling back to the current host architecture ($debarch)." >&2
 		echo "Please add support for $UTS_MACHINE to ${0} ..." >&2
 		echo "" >&2
-	esac
-	if [ -n "$KBUILD_DEBARCH" ] ; then
-		debarch="$KBUILD_DEBARCH"
 	fi
 }