# VecInitializePackage
This function initializes everything in the Vec package. It is called from PetscDLLibraryRegister_petscvec() when using dynamic libraries, and on the first call to VecCreate() when using shared or static libraries. 
## Synopsis
```
PetscErrorCode VecInitializePackage(void)
```



## See Also
 `PetscInitialize()`

## Level
developer

## Location
<A HREF="PETSC_DOC_OUT_ROOT_PLACEHOLDER/src/vec/vec/interface/dlregisvec.c.html#VecInitializePackage">src/vec/vec/interface/dlregisvec.c</A>


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[Edit on GitLab](https://gitlab.com/petsc/petsc/-/edit/release/src/vec/vec/interface/dlregisvec.c)


[Index of all Vec routines](index.md)  
[Table of Contents for all manual pages](/docs/manualpages/index.md)  
[Index of all manual pages](/docs/manualpages/singleindex.md)  
