posix shared memory with wamr

[VaibhavVgithub]

[01:25:19:899 - 7F01820E5580]: warning: failed to link import function (env, shm_open)
[01:25:19:909 - 7F01820E5580]: warning: failed to link import function (env, ftruncate)
Exception: failed to call unlinked import function (env, shm_open)

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can someone please explain how to resolve this issue. I want shared memory functionalities in my 'main.c'. And also, Can someone suggest any other procedure than native-lib example to use shared memory applications with wamr?