Refactor dlopen() support

Nowadays, all platforms except Windows and older HP-UX have standard
dlopen() support.  So having a separate implementation per platform
under src/backend/port/dynloader/ is a bit excessive.  Instead, treat
dlopen() like other library functions that happen to be missing
sometimes and put a replacement implementation under src/port/.

Discussion: https://www.postgresql.org/message-id/flat/e11a49cb-570a-60b7-707d-7084c8de0e61%402ndquadrant.com#54e735ae37476a121abb4e33c2549b03

1 files changed, 0 insertions, 35 deletions

diff --git a/src/backend/port/dynloader/darwin.c b/src/backend/port/dynloader/darwin.c
deleted file mode 100644
index 65fa0e39f21..00000000000
--- a/src/backend/port/dynloader/darwin.c
+++ /dev/null
@@ -1,35 +0,0 @@
-/*
- * Dynamic loading support for macOS (Darwin)
- *
- * src/backend/port/dynloader/darwin.c
- */
-#include "postgres.h"
-
-#include <dlfcn.h>
-
-#include "dynloader.h"
-
-
-void *
-pg_dlopen(const char *filename)
-{
-	return dlopen(filename, RTLD_NOW | RTLD_GLOBAL);
-}
-
-void
-pg_dlclose(void *handle)
-{
-	dlclose(handle);
-}
-
-PGFunction
-pg_dlsym(void *handle, const char *funcname)
-{
-	return dlsym(handle, funcname);
-}
-
-char *
-pg_dlerror(void)
-{
-	return dlerror();
-}