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aarch64 Cross compilation error (GLIBCXX_3.4)

Hi,

I've a software successfully cross compiled with the ARMHF cross compilation toolchain and i try to port it on AARCH64...

Compilation works, but link failed with some "undefined reference ...@GLIBCXX_3.4"

i try the command " strings libstdc++.so.6.0.25 | grep GLIBCXX " and i only get 

GLIBCXX_FORCE_NEW
GLIBCXX_DEBUG_MESSAGE_LENGTH

I'm waiting for something like :

GLIBCXX_3.4
GLIBCXX_3.4.1
GLIBCXX_3.4.2
GLIBCXX_3.4.3
GLIBCXX_3.4.4
GLIBCXX_3.4.5
GLIBCXX_3.4.6
GLIBCXX_3.4.7
GLIBCXX_3.4.8
GLIBCXX_3.4.9
GLIBCXX_3.4.10
GLIBCXX_3.4.11
GLIBCXX_3.4.12
GLIBCXX_3.4.13
GLIBCXX_3.4.14
GLIBCXX_3.4.15
GLIBCXX_3.4.16
GLIBCXX_3.4.17
GLIBCXX_3.4.18
GLIBCXX_3.4.19
GLIBCXX_3.4.20
GLIBCXX_3.4.21
GLIBCXX_3.4.22
GLIBCXX_3.4.23
GLIBCXX_3.4.24
GLIBCXX_3.4.25

I'm using the last version of the linux AMD64 cross compile toolchain (gcc-arm-8.2-2019.01-x86_64-aarch64-linux-gnu.tar.xz)

What do i wrong ?