diff options
Diffstat (limited to 'src/include/c.h')
| -rw-r--r-- | src/include/c.h | 13 |
1 files changed, 9 insertions, 4 deletions
diff --git a/src/include/c.h b/src/include/c.h index 863a16c6a6c..2cc2784750e 100644 --- a/src/include/c.h +++ b/src/include/c.h @@ -1347,14 +1347,19 @@ extern unsigned long long strtoull(const char *str, char **endptr, int base); /* * Use "extern PGDLLEXPORT ..." to declare functions that are defined in - * loadable modules and need to be callable by the core backend. (Usually, - * this is not necessary because our build process automatically exports - * such symbols, but sometimes manual marking is required.) - * No special marking is required on most ports. + * loadable modules and need to be callable by the core backend or other + * loadable modules. + * If the compiler knows __attribute__((visibility("*"))), we use that, + * unless we already have a platform-specific definition. Otherwise, + * no special marking is required. */ #ifndef PGDLLEXPORT +#ifdef HAVE_VISIBILITY_ATTRIBUTE +#define PGDLLEXPORT __attribute__((visibility("default"))) +#else #define PGDLLEXPORT #endif +#endif /* * The following is used as the arg list for signal handlers. Any ports |