apenwarr-redo/redoconf/rc/CXX.rc.od

rc_include rc/CC.rc

rc_helpmsg CXX "C++ compiler name (c++)"
rc_helpmsg CXXFLAGS "Extra C++ compiler flags (eg. -O2 -g)"

if [ -n "$CXX" ]; then
	set -- "$CXX"
else
	# Note: $ARCH has already been set correctly by CC.rc
	set -- \
	    "${ARCH}c++" "${ARCH}g++" \
	    "${ARCH}clang++" "/usr/bin/${ARCH}clang++"-[0-9]*
fi

for d in "$@"; do
	[ -n "$d" ] || continue
	echo "Trying C++ compiler: '$d'" >&2
	if CC="" CXX="$d" LINK="$d" rc_compile cxx link 'class A {};'; then
		rc_replaceln CXX "$d"
		# If the project activates CXX.rc, then we
		# replace the C linker with C++.  This causes
		# it to include -lstdc++, etc.
		# A future .rc could override this again.
		rc_replaceln LINK "$d"
		rc_replaceln HAVE_CXX 1
		rc_save
		exit 0
	fi
done

echo "Warning: Can't find a working C++ compiler." >&2
rc_undo
rc_replaceln CXX ""
rc_save