I complite LibreElEC source code ,have some error
INSTALL nss (target)
INSTALL nss (host)
INSTALL nspr (target)
BUILD expat (host)
Executing (host): cmake -GNinja -DCMAKE_EXPORT_COMPILE_COMMANDS=ON -DCMAKE_TOOLCHAIN_FILE=/home/ljb/H3/LibreELEC.tv/build.LibreELEC-Allwinner.arm-9.0-devel/toolchain/etc/cmake-x86_64-linux-gnu.conf -DCMAKE_INSTALL_PREFIX=/home/ljb/H3/LibreELEC.tv/build.LibreELEC-Allwinner.arm-9.0-devel/toolchain /home/ljb/H3/LibreELEC.tv/build.LibreELEC-Allwinner.arm-9.0-devel/expat-2.2.0
-- Configuring done
-- Generating done
-- Build files have been written to: /home/ljb/H3/LibreELEC.tv/build.LibreELEC-Allwinner.arm-9.0-devel/expat-2.2.0/.x86_64-linux-gnu
Executing (host): ninja
ninja: error: build.ninja:155: bad $-escape (literal $ must be written as $$)
==========================
line 155 of build.ninja as this:
PRE_LINK = cd /home/ljb/H3/LibreELEC.tv/build.LibreELEC-Allwinner.arm-9.0-devel/expat-2.2.0/.x86_64-linux-gnu && $(MAKE) -C doc xmlwf.1 && cd /home/ljb/H3/LibreELEC.tv/build.LibreELEC-Allwinner.arm-9.0-devel/expat-2.2.0/.x86_64-linux-gnu
how to fix it?