can I compile stdc++ library alone using existing aarch64 toolchain?

[xian li]

Thanks for your information, I have tried to use existing aarch64
toolchain to compile gcc only, but there is some problem(
eg. '/usr/lib64/libgmp.la' is not a valid libtool archive  even though
I have configure with --with-gmp) , it make me think that I should
compile gcc from scratch(glic,linux-kernel headers, mpfr,gmp,mpc so
on),
am I right, or there is some way to use existing toolchain to build
modified gcc?

Jonathan Wakely <jwakely.gcc@gmail.com> 于2021年1月9日周六 下午7:11写道：
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> On Sat, 9 Jan 2021, 03:01 xian li via Gcc-help, <gcc-help@gcc.gnu.org> wrote:
>>
>> Hi,
>>
>> On my computer, there is already existing aarch64-linux-gnu toolchain,
>> but we have to modify codes in stdc++ lib in gcc (5.4),
>> we just want to compile the stdc++ library alone, is it possible to
>> accomplish this work?
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> This is not supported. The only supported way to build libstdc++ is as part of building GCC.
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