Adding upstream version 18.2.2.upstream/18.2.2

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 186 insertions, 0 deletions

diff --git a/src/spdk/scripts/detect_cc.sh b/src/spdk/scripts/detect_cc.sh
new file mode 100755
index 000000000..a05ff9adf
--- /dev/null
+++ b/src/spdk/scripts/detect_cc.sh
@@ -0,0 +1,186 @@
+#!/usr/bin/env bash
+
+set -e
+
+function err() {
+	echo "$@" >&2
+}
+
+function usage() {
+	err "Detect compiler and linker versions, generate mk/cc.mk"
+	err ""
+	err "Usage: ./detect_cc.sh [OPTION]..."
+	err ""
+	err "Defaults for the options are specified in brackets."
+	err ""
+	err "General:"
+	err " -h, --help                Display this help and exit"
+	err " --cc=path                 C compiler to use"
+	err " --cxx=path                C++ compiler to use"
+	err " --ld=path                 Linker to use"
+	err " --lto=[y|n]               Attempt to configure for LTO"
+	err " --cross-prefix=prefix     Use the given prefix for the cross compiler toolchain"
+}
+
+for i in "$@"; do
+	case "$i" in
+		-h | --help)
+			usage
+			exit 0
+			;;
+		--cc=*)
+			if [[ -n "${i#*=}" ]]; then
+				CC="${i#*=}"
+			fi
+			;;
+		--cxx=*)
+			if [[ -n "${i#*=}" ]]; then
+				CXX="${i#*=}"
+			fi
+			;;
+		--lto=*)
+			if [[ -n "${i#*=}" ]]; then
+				LTO="${i#*=}"
+			fi
+			;;
+		--ld=*)
+			if [[ -n "${i#*=}" ]]; then
+				LD="${i#*=}"
+			fi
+			;;
+		--cross-prefix=*)
+			if [[ -n "${i#*=}" ]]; then
+				CROSS_PREFIX="${i#*=}"
+			fi
+			;;
+		--)
+			break
+			;;
+		*)
+			err "Unrecognized option $i"
+			usage
+			exit 1
+			;;
+	esac
+done
+
+OS=$(uname)
+
+: ${CC=cc}
+: ${CXX=c++}
+: ${LD=}
+: ${LTO=n}
+: ${CROSS_PREFIX=}
+
+if [ -z "$LD" ]; then
+	if [ "$OS" = "Linux" ]; then
+		LD=ld
+	fi
+	if [ "$OS" = "FreeBSD" ]; then
+		LD=ld.lld
+	fi
+fi
+
+CC_TYPE=$($CC -v 2>&1 | grep -o -E '\w+ version' | head -1 | awk '{ print $1 }')
+CXX_TYPE=$($CXX -v 2>&1 | grep -o -E '\w+ version' | head -1 | awk '{ print $1 }')
+if [ "$CC_TYPE" != "$CXX_TYPE" ]; then
+	err "C compiler is $CC_TYPE but C++ compiler is $CXX_TYPE"
+	err "This may result in errors"
+fi
+
+LD_TYPE=$($LD --version 2>&1 | head -n1 | awk '{print $1, $2}')
+case "$LD_TYPE" in
+	"GNU ld"*)
+		LD_TYPE=bfd
+		;;
+	"GNU gold"*)
+		LD_TYPE=gold
+		;;
+	"LLD"*)
+		LD_TYPE=lld
+		;;
+	*)
+		err "Unsupported linker: $LD"
+		exit 1
+		;;
+esac
+
+CCAR="ar"
+if [ "$LTO" = "y" ]; then
+	if [ "$CC_TYPE" = "clang" ]; then
+		if [ "$LD_TYPE" != "gold" ]; then
+			err "Using LTO with clang requires the gold linker."
+			exit 1
+		fi
+		CCAR="llvm-ar"
+	else
+		CCAR="gcc-ar"
+	fi
+fi
+
+if [ -n "$CROSS_PREFIX" ]; then
+	expected_prefix=$($CC -dumpmachine)
+
+	if [ ! "$expected_prefix" = "$CROSS_PREFIX" ]; then
+		err "Cross prefix specified ($CROSS_PREFIX) does not match prefix of $CC ($expected_prefix)."
+
+		# Try to fix this automatically. Maybe the user set CROSS_PREFIX but not CC.
+		CC=$CROSS_PREFIX-$CC
+		if hash $CC 2> /dev/null; then
+			expected_prefix=$($CC -dumpmachine)
+
+			if [ "$expected_prefix" = "$CROSS_PREFIX" ]; then
+				err "Automatically changed CC to $CC"
+			else
+				err "Set CC to the appropriate compiler."
+				exit 1
+			fi
+		else
+			err "Set CC to the appropriate compiler."
+			exit 1
+		fi
+
+	fi
+
+	expected_prefix=$($CXX -dumpmachine)
+
+	if [ ! "$expected_prefix" = "$CROSS_PREFIX" ]; then
+		err "Cross prefix specified ($CROSS_PREFIX) does not match prefix of $CXX ($expected_prefix)."
+
+		# Try to fix this automatically. Maybe the user set CROSS_PREFIX but not CXX.
+		CXX=$CROSS_PREFIX-$CXX
+		if hash $CXX 2> /dev/null; then
+			expected_prefix=$($CXX -dumpmachine)
+
+			if [ "$expected_prefix" = "$CROSS_PREFIX" ]; then
+				err "Automatically changed CXX to $CXX"
+			else
+				err "Set CXX to the appropriate compiler."
+				exit 1
+			fi
+		else
+			err "Set CXX to the appropriate compiler."
+			exit 1
+		fi
+	fi
+fi
+
+function set_default() {
+	echo "DEFAULT_$1=$2"
+	echo "ifeq (\$(origin $1),default)"
+	echo "$1=$2"
+	echo "endif"
+	echo ""
+}
+
+set_default CC "$CC"
+set_default CXX "$CXX"
+set_default LD "$LD"
+
+echo "CCAR=$CCAR"
+echo "CC_TYPE=$CC_TYPE"
+echo "LD_TYPE=$LD_TYPE"
+
+if [ -n "$CROSS_PREFIX" ]; then
+	echo "CROSS_PREFIX=$CROSS_PREFIX"
+fi