[参考译文] PROCESSOR-SDK-AM64X：AM6442：TI RPMsg Char git package -运行最新 ARM GNU 编译器时出现的问题

Build the Linux Userspace example for Linux RPMsg by following the steps
in the top-level README:

#. Download the git repo

#. Install GNU autoconf, GNU automake, GNU libtool, and v8 compiler as per the
   README

#. Perform the Build Steps as per the README

Sample build output on Ubuntu 22.04:

    ::

        :~/git/ti-rpmsg-char$ git status
        On branch master
        Your branch is up to date with 'origin/master'.

        Untracked files:
          (use "git add <file>..." to include in what will be committed)
                library/

        nothing added to commit but untracked files present (use "git add" to track)
        :~/git/ti-rpmsg-char$ git branch
        * master

        :~/git/ti-rpmsg-char$ git pull --rebase origin master
        ...

        :~/git/ti-rpmsg-char$ export PATH=~/ti/gcc-arm-9.2-2019.12-x86_64-aarch64-none-linux-gnu/bin:$PATH

        :~/git/ti-rpmsg-char$ sudo apt-get install automake
        ...

        :~/git/ti-rpmsg-char$ sudo apt-get install libtool
        ...

        :~/git/ti-rpmsg-char$ make distclean
        Making distclean in src
        ...

        :~/git/ti-rpmsg-char$ autoreconf -i
        ...
        
        :~/git/ti-rpmsg-char$ mkdir outputs

        :~/git/ti-rpmsg-char$ ./configure --host=aarch64-none-linux-gnu --prefix=/home/userName/git/ti-rpmsg-char/outputs
        ...
        -----------------------------------------------------------

        Thank you for installing the Linux ti-rpmsg-char package

        Installation directory prefix: '/home/userName/git/ti-rpmsg-char/outputs'.
        Compilation command: 'aarch64-none-linux-gnu-gcc -g -O2 '

        Now type 'make; sudo make install' to generate the program
        and install it to your system. sudo usage is optional and
        depends on the permissions of the prefix folder being used
        or installation.

        ------------------------------------------------------------

        :~/git/ti-rpmsg-char$ make
        ...

        :~/git/ti-rpmsg-char$ make install
        ...
        ----------------------------------------------------------------------
        Libraries have been installed in:
           /home/userName/git/ti-rpmsg-char/outputs/lib

        If you ever happen to want to link against installed libraries
        in a given directory, LIBDIR, you must either use libtool, and
        specify the full pathname of the library, or use the '-LLIBDIR'
        flag during linking and do at least one of the following:
           - add LIBDIR to the 'LD_LIBRARY_PATH' environment variable
             during execution
           - add LIBDIR to the 'LD_RUN_PATH' environment variable
             during linking
           - use the '-Wl,-rpath -Wl,LIBDIR' linker flag
           - have your system administrator add LIBDIR to '/etc/ld.so.conf'

        See any operating system documentation about shared libraries for
        more information, such as the ld(1) and ld.so(8) manual pages.
        ----------------------------------------------------------------------
        ...

        :~/git/ti-rpmsg-char$ make -C examples
        make: Entering directory '/home/userName/git/ti-rpmsg-char/examples'
        aarch64-none-linux-gnu-gcc -DHAVE_CONFIG_H -I. -I..  -Wall -g -O2 -I/home/userName/git/ti-rpmsg-char/outputs/include  -Wall -g -O2 -I/home/userName/git/ti-rpmsg-ch
        ar/outputs/include -g -O2 -MT rpmsg_char_simple-rpmsg_char_simple.o -MD -MP -MF .deps/rpmsg_char_simple-rpmsg_char_simple.Tpo -c -o rpmsg_char_simple-rpmsg_char_simple.o `te
        st -f 'rpmsg_char_simple.c' || echo './'`rpmsg_char_simple.c
        mv -f .deps/rpmsg_char_simple-rpmsg_char_simple.Tpo .deps/rpmsg_char_simple-rpmsg_char_simple.Po
        /bin/bash ../libtool  --tag=CC   --mode=link aarch64-none-linux-gnu-gcc -Wall -g -O2 -I/home/userName/git/ti-rpmsg-char/outputs/include -g -O2 -L/home/userName/git
        /ti-rpmsg-char/outputs/lib  -o rpmsg_char_simple rpmsg_char_simple-rpmsg_char_simple.o -lpthread -lti_rpmsg_char
        libtool: link: aarch64-none-linux-gnu-gcc -Wall -g -O2 -I/home/userName/git/ti-rpmsg-char/outputs/include -g -O2 -o rpmsg_char_simple rpmsg_char_simple-rpmsg_char_simpl
        e.o  -L/home/userName/git/ti-rpmsg-char/outputs/lib -lpthread /home/userName/git/ti-rpmsg-char/outputs/lib/libti_rpmsg_char.so -Wl,-rpath -Wl,/home/userName/g
        it/ti-rpmsg-char/outputs/lib -Wl,-rpath -Wl,/home/userName/git/ti-rpmsg-char/outputs/lib
                make: Leaving directory '/home/userName/git/ti-rpmsg-char/examples'

        :~/git/ti-rpmsg-char$ make -C examples install
        make: Entering directory '/home/userName/git/ti-rpmsg-char/examples'
        make[1]: Entering directory '/home/userName/git/ti-rpmsg-char/examples'
         /usr/bin/mkdir -p '/home/userName/git/ti-rpmsg-char/outputs/bin'
          /bin/bash ../libtool   --mode=install /usr/bin/install -c rpmsg_char_simple '/home/userName/git/ti-rpmsg-char/outputs/bin'
        libtool: install: /usr/bin/install -c rpmsg_char_simple /home/userName/git/ti-rpmsg-char/outputs/bin/rpmsg_char_simple
        make[1]: Nothing to be done for 'install-data-am'.
        make[1]: Leaving directory '/home/userName/git/ti-rpmsg-char/examples'
        make: Leaving directory '/home/userName/git/ti-rpmsg-char/examples'