1 2 #include <petsc/private/petscimpl.h> /*I "petscsys.h" I*/ 3 4 /*@C 5 PetscHasExternalPackage - Determine whether PETSc has been configured with the given package 6 7 Not Collective 8 9 Input Parameter: 10 . pkg - external package name 11 12 Output Parameter: 13 . has - `PETSC_TRUE` if PETSc is configured with the given package, else `PETSC_FALSE`. 14 15 Level: intermediate 16 17 Notes: 18 This is basically an alternative for `PETSC_HAVE_XXX` whenever a preprocessor macro is not available/desirable, e.g. in Python. 19 20 The external package name pkg is e.g. "hdf5", "yaml", "parmetis". 21 It should correspond to the name listed in `./configure --help` or e.g. in `PetscViewerType`, `MatPartitioningType`, `MatSolverType`. 22 23 The lookup is case insensitive, i.e. looking for "HDF5" or "hdf5" is the same. 24 25 .seealso: `PetscViewerType`, `MatPartitioningType`, `MatSolverType` 26 @*/ 27 PetscErrorCode PetscHasExternalPackage(const char pkg[], PetscBool *has) 28 { 29 char pkgstr[128], *loc; 30 size_t cnt; 31 32 PetscFunctionBegin; 33 PetscValidCharPointer(pkg, 1); 34 PetscValidBoolPointer(has, 2); 35 PetscCall(PetscSNPrintfCount(pkgstr, sizeof(pkgstr), ":%s:", &cnt, pkg)); 36 PetscCheck(cnt < sizeof(pkgstr), PETSC_COMM_SELF, PETSC_ERR_SUP, "Package name is too long: \"%s\"", pkg); 37 PetscCall(PetscStrtolower(pkgstr)); 38 #if defined(PETSC_HAVE_PACKAGES) 39 PetscCall(PetscStrstr(PETSC_HAVE_PACKAGES, pkgstr, &loc)); 40 #else 41 #error "PETSC_HAVE_PACKAGES macro undefined. Please reconfigure" 42 #endif 43 *has = loc ? PETSC_TRUE : PETSC_FALSE; 44 PetscFunctionReturn(PETSC_SUCCESS); 45 } 46