diff options
Diffstat (limited to 'src/include/pg_config_manual.h')
| -rw-r--r-- | src/include/pg_config_manual.h | 17 |
1 files changed, 17 insertions, 0 deletions
diff --git a/src/include/pg_config_manual.h b/src/include/pg_config_manual.h index 614035e2159..225c5b87cc7 100644 --- a/src/include/pg_config_manual.h +++ b/src/include/pg_config_manual.h @@ -43,6 +43,23 @@ #define FUNC_MAX_ARGS 100 /* + * When creating a product derived from PostgreSQL with changes that cause + * incompatibilities for loadable modules, it is recommended to change this + * string so that dfmgr.c can refuse to load incompatible modules with a clean + * error message. Typical examples that cause incompatibilities are any + * changes to node tags or node structures. (Note that dfmgr.c already + * detects common sources of incompatibilities due to major version + * differences and due to some changed compile-time constants. This setting + * is for catching anything that cannot be detected in a straightforward way.) + * + * There is no prescribed format for the string. The suggestion is to include + * product or company name, and optionally any internally-relevant ABI + * version. Example: "ACME Postgres/1.2". Note that the string will appear + * in a user-facing error message if an ABI mismatch is detected. + */ +#define FMGR_ABI_EXTRA "PostgreSQL" + +/* * Maximum number of columns in an index. There is little point in making * this anything but a multiple of 32, because the main cost is associated * with index tuple header size (see access/itup.h). |