Support AIX dyld constants

Author: ecnelises

src/os/unix/consts.rs

@@ -60,6 +60,8 @@ mod posix {
     cfg_if! {
         if #[cfg(target_os = "haiku")] {
             pub(super) const RTLD_LAZY: c_int = 0;
+        } else if #[cfg(target_os = "aix")] {
+            pub(super) const RTLD_LAZY: c_int = 4;
         } else if #[cfg(any(
             target_os = "linux",
             target_os = "android",
@@ -104,6 +106,7 @@ mod posix {
             target_os = "openbsd",
             target_os = "netbsd",
 
+            target_os = "aix",
             target_os = "solaris",
             target_os = "illumos",
 
@@ -129,6 +132,8 @@ mod posix {
             all(target_os = "android",target_pointer_width = "32"),
         ))] {
             pub(super) const RTLD_GLOBAL: c_int = 2;
+        } else if #[cfg(target_os = "aix")] {
+            pub(super) const RTLD_GLOBAL: c_int = 0x10000;
         } else if #[cfg(any(
             target_env = "uclibc",
             all(target_os = "linux", target_arch = "mips"),
@@ -169,6 +174,8 @@ mod posix {
     cfg_if! {
         if #[cfg(target_os = "netbsd")] {
             pub(super) const RTLD_LOCAL: c_int = 0x200;
+        } else if #[cfg(target_os = "aix")] {
+            pub(super) const RTLD_LOCAL: c_int = 0x80000;
         } else if #[cfg(any(
             target_os = "macos",
             target_os = "ios",