Add ar.h for systems where it doesn't exist

Change-Id: I98b8fa2e278dca673f52dc2bd5a50144a694582f
Reviewed-by: Christian Kandeler <christian.kandeler@qt.io>

2 files changed, 67 insertions, 1 deletions

diff --git a/libgnu/Makefile.am b/libgnu/Makefile.am
index 05a8f615..d7af59a1 100644
--- a/libgnu/Makefile.am
+++ b/libgnu/Makefile.am
@@ -35,7 +35,7 @@ noinst_LIBRARIES =
 MOSTLYCLEANFILES =
 MOSTLYCLEANDIRS =
 BUILT_SOURCES =
-EXTRA_DIST = endian.in.h byteswap.in.h sys_mman.win32.h mman_win32.c sysconf_win32.c
+EXTRA_DIST = endian.in.h byteswap.in.h sys_mman.win32.h mman_win32.c sysconf_win32.c ar.in.h
 CLEANFILES =
 SUFFIXES =
 
@@ -53,6 +53,13 @@ BUILT_SOURCES += byteswap.h
 MOSTLYCLEANFILES += byteswap.h
 endif
 
+if !HAVE_AR_H
+ar.h: ar.in.h
+	$(AM_V_GEN)rm -f $@ && cat $< > $@
+BUILT_SOURCES += ar.h
+MOSTLYCLEANFILES += ar.h
+endif
+
 if !HAVE_SYS_MMAN_H
 if USE_WIN32_MMAN
 sys/mman.h: sys_mman.win32.h
diff --git a/libgnu/ar.in.h b/libgnu/ar.in.h
new file mode 100644
index 00000000..acdae2f3
--- /dev/null
+++ b/libgnu/ar.in.h
@@ -0,0 +1,59 @@
+/* Header describing `ar' archive file format.
+   Copyright (C) 1996-2017 Free Software Foundation, Inc.
+   This file is part of elfutils.
+
+   This file is free software; you can redistribute it and/or modify
+   it under the terms of either
+
+     * the GNU Lesser General Public License as published by the Free
+       Software Foundation; either version 3 of the License, or (at
+       your option) any later version
+
+   or
+
+     * the GNU General Public License as published by the Free
+       Software Foundation; either version 2 of the License, or (at
+       your option) any later version
+
+   or both in parallel, as here.
+
+   elfutils 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 copies of the GNU General Public License and
+   the GNU Lesser General Public License along with this program.  If
+   not, see <http://www.gnu.org/licenses/>.  */
+
+#ifndef _AR_H
+#define _AR_H 1
+
+/* Archive files start with the ARMAG identifying string.  Then follows a
+   `struct ar_hdr', and as many bytes of member file data as its `ar_size'
+   member indicates, for each member file.  */
+
+#define ARMAG   "!<arch>\n" /* String that begins an archive file.  */
+#define SARMAG  8           /* Size of that string.  */
+
+#define ARFMAG  "`\n"       /* String in ar_fmag at end of each header.  */
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+struct ar_hdr
+{
+    char ar_name[16];          /* Member file name, sometimes / terminated. */
+    char ar_date[12];          /* File date, decimal seconds since Epoch.  */
+    char ar_uid[6], ar_gid[6]; /* User and group IDs, in ASCII decimal.  */
+    char ar_mode[8];           /* File mode, in ASCII octal.  */
+    char ar_size[10];          /* File size, in ASCII decimal.  */
+    char ar_fmag[2];           /* Always contains ARFMAG.  */
+};
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif /* ar.h */