Hide elf Apis for internal use only

Hide elf Apis so that there won't be mixing with external libelf

Change-Id: I2b3d25a8ab3b161f4dd969e31ad45e8aa627263b


[ROCm/clr commit: 02cd18813f]

projects/clr/rocclr/elf/utils/libelf/gelf.h

@@ -72,6 +72,7 @@ typedef Elf64_Syminfo	GElf_Syminfo;	/* Symbol information */
 #define	GELF_ST_TYPE			ELF64_ST_TYPE
 #define	GELF_ST_VISIBILITY		ELF64_ST_VISIBILITY
 
+#pragma GCC visibility push(hidden)
 __BEGIN_DECLS
 long		gelf_checksum(Elf *_elf);
 size_t		gelf_fsize(Elf *_elf, Elf_Type _type, size_t _count,
@@ -110,5 +111,6 @@ int		gelf_update_move(Elf_Data *_dst, int _index, GElf_Move *_src);
 int		gelf_update_syminfo(Elf_Data *_dst, int _index, GElf_Syminfo *_src);
 #endif
 __END_DECLS
+#pragma GCC visibility pop
 
 #endif	/* _GELF_H_ */

projects/clr/rocclr/elf/utils/libelf/libelf.h

@@ -187,6 +187,7 @@ enum Elf_Error {
 #define	ELF_F_ARCHIVE	   0x100U /* archive creation */
 #define	ELF_F_ARCHIVE_SYSV 0x200U /* SYSV style archive */
 
+#pragma GCC visibility push(hidden)
 __BEGIN_DECLS
 Elf		*elf_begin(int _fd, Elf_Cmd _cmd, Elf *_elf, Elf_Mem *_mem);
 int		elf_cntl(Elf *_elf, Elf_Cmd _cmd);
@@ -258,5 +259,6 @@ Elf_Data	*elf64_xlatetof(Elf_Data *_dst, const Elf_Data *_src,
 Elf_Data	*elf64_xlatetom(Elf_Data *_dst, const Elf_Data *_src,
 			unsigned int _enc);
 __END_DECLS
+#pragma GCC visibility pop
 
 #endif	/* _LIBELF_H_ */