bfd: move ATTRIBUTE_HIDDEN to separate header
... for it to become usable in places where libbfd.h cannot (easily) be
included.
diff --git a/bfd/Makefile.am b/bfd/Makefile.am
index 3c32432..5578484 100644
--- a/bfd/Makefile.am
+++ b/bfd/Makefile.am
@@ -710,7 +710,7 @@
elf-linux-core.h elf-s390.h elf-vxworks.h \
elfxx-aarch64.h elfxx-ia64.h elfxx-mips.h elfxx-riscv.h \
elfxx-sparc.h elfxx-tilegx.h elfxx-x86.h elfxx-loongarch.h \
- genlink.h go32stub.h \
+ genlink.h go32stub.h hidden.h \
libaout.h libbfd.h libcoff.h libecoff.h libhppa.h \
libpei.h libxcoff.h \
mach-o.h \
diff --git a/bfd/Makefile.in b/bfd/Makefile.in
index 6d1944c..ab92d52 100644
--- a/bfd/Makefile.in
+++ b/bfd/Makefile.in
@@ -1176,7 +1176,7 @@
elf-linux-core.h elf-s390.h elf-vxworks.h \
elfxx-aarch64.h elfxx-ia64.h elfxx-mips.h elfxx-riscv.h \
elfxx-sparc.h elfxx-tilegx.h elfxx-x86.h elfxx-loongarch.h \
- genlink.h go32stub.h \
+ genlink.h go32stub.h hidden.h \
libaout.h libbfd.h libcoff.h libecoff.h libhppa.h \
libpei.h libxcoff.h \
mach-o.h \
diff --git a/bfd/hidden.h b/bfd/hidden.h
new file mode 100644
index 0000000..8a2eb51
--- /dev/null
+++ b/bfd/hidden.h
@@ -0,0 +1,34 @@
+/* hidden.h -- "hidden" ELF visibility attribute abstraction.
+ (This include file is not for users of the library.)
+
+ Copyright (C) 2025 Free Software Foundation, Inc.
+
+ This file is part of BFD, the Binary File Descriptor library.
+
+ This program is free software; you can redistribute it and/or modify
+ it under the terms of the GNU General Public License as published by
+ the Free Software Foundation; either version 3 of the License, or
+ (at your option) any later version.
+
+ This program is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ GNU General Public License for more details.
+
+ You should have received a copy of the GNU General Public License
+ along with this program; if not, write to the Free Software
+ Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston,
+ MA 02110-1301, USA. */
+
+#ifndef _HIDDEN_H
+#define _HIDDEN_H 1
+
+#ifndef ATTRIBUTE_HIDDEN
+#if HAVE_HIDDEN
+#define ATTRIBUTE_HIDDEN __attribute__ ((__visibility__ ("hidden")))
+#else
+#define ATTRIBUTE_HIDDEN
+#endif
+#endif
+
+#endif /* _HIDDEN_H */
diff --git a/bfd/libbfd-in.h b/bfd/libbfd-in.h
index e00bd43..93e49b8 100644
--- a/bfd/libbfd-in.h
+++ b/bfd/libbfd-in.h
@@ -25,15 +25,8 @@
#ifndef _LIBBFD_H
#define _LIBBFD_H 1
-#ifndef ATTRIBUTE_HIDDEN
-#if HAVE_HIDDEN
-#define ATTRIBUTE_HIDDEN __attribute__ ((__visibility__ ("hidden")))
-#else
-#define ATTRIBUTE_HIDDEN
-#endif
-#endif
-
#include "hashtab.h"
+#include "hidden.h"
#ifdef __cplusplus
extern "C" {
diff --git a/bfd/libbfd.h b/bfd/libbfd.h
index 5f1239e..3e522dd 100644
--- a/bfd/libbfd.h
+++ b/bfd/libbfd.h
@@ -31,15 +31,8 @@
#ifndef _LIBBFD_H
#define _LIBBFD_H 1
-#ifndef ATTRIBUTE_HIDDEN
-#if HAVE_HIDDEN
-#define ATTRIBUTE_HIDDEN __attribute__ ((__visibility__ ("hidden")))
-#else
-#define ATTRIBUTE_HIDDEN
-#endif
-#endif
-
#include "hashtab.h"
+#include "hidden.h"
#ifdef __cplusplus
extern "C" {
diff --git a/bfd/po/SRC-POTFILES.in b/bfd/po/SRC-POTFILES.in
index 1ba9cc2..a931b3a 100644
--- a/bfd/po/SRC-POTFILES.in
+++ b/bfd/po/SRC-POTFILES.in
@@ -273,6 +273,7 @@
genlink.h
go32stub.h
hash.c
+hidden.h
hpux-core.c
i386aout.c
i386bsd.c
