Define ELF64_ST_VISIBILITY and ELF32_ST_VISIBILITY for android

Author: hamishmack

overlays/bootstrap.nix

@@ -230,6 +230,7 @@ in {
                 ++ onAndroid (fromUntil "9.0" "9.10" ./patches/ghc/ghc-9.6-hadrian-android.patch)
                 ++ onAndroid (from "9.10" ./patches/ghc/ghc-9.10-hadrian-android.patch)
                 ++ onAndroid (fromUntil "9.10" "9.11" ./patches/ghc/ghc-9.10-relax-llvm-max-version.patch)
+                ++ onAndroid (from "9.12" ./patches/ghc/ghc-define-undefined-elf-st-visibility.patch)
                 ++ onMusl (onAarch64 (fromUntil "9.4"  "9.8"  ./patches/ghc/ghc-9.6-hadrian-strip-cmd.patch))
                 ++ onMusl (onAarch64 (fromUntil "9.8"  "9.10" ./patches/ghc/ghc-9.8-hadrian-strip-cmd.patch))
                 ++ onMusl (onAarch64 (fromUntil "9.10" "9.12" ./patches/ghc/ghc-9.10-hadrian-strip-cmd.patch))

overlays/patches/ghc/ghc-define-undefined-elf-st-visibility.patch

@@ -0,0 +1,24 @@
+diff --git a/rts/linker/ElfTypes.h b/rts/linker/ElfTypes.h
+index f5e2f819d9..7f75087738 100644
+--- a/rts/linker/ElfTypes.h
++++ b/rts/linker/ElfTypes.h
+@@ -33,6 +33,9 @@
+ #define Elf_Sym     Elf64_Sym
+ #define Elf_Rel     Elf64_Rel
+ #define Elf_Rela    Elf64_Rela
++#if !defined(ELF64_ST_VISIBILITY)
++#define ELF64_ST_VISIBILITY(o) ((o)&0x3)
++#endif
+ #if !defined(ELF_ST_VISIBILITY)
+ #define ELF_ST_VISIBILITY ELF64_ST_VISIBILITY
+ #endif
+@@ -60,6 +63,9 @@
+ #define Elf_Sym     Elf32_Sym
+ #define Elf_Rel     Elf32_Rel
+ #define Elf_Rela    Elf32_Rela
++#if !defined(ELF32_ST_VISIBILITY)
++#define ELF32_ST_VISIBILITY(o) ((o)&0x3)
++#endif
+ #if !defined(ELF_ST_VISIBILITY)
+ #define ELF_ST_VISIBILITY ELF32_ST_VISIBILITY
+ #endif /* ELF_ST_VISIBILITY */