Add a "selfcontained" mode to provide missing headers on windows

On windows there is no features.h, uid_t, gid_t, mode_t, and pid_t are
not defined and there is also no elf.h. To make it possible to build
other software against libelf and libdw, install our own version of
elf.h, and a bare-bones features.h that provides exactly the above
declarations.

Change-Id: I9df3c8cbffe431b8b6834dbd2246e38df4f5e172
Reviewed-by: Christian Kandeler <[email protected]>

2 files changed, 53 insertions, 1 deletions

diff --git a/lib/Makefile.am b/lib/Makefile.am
index 17d16d07..87a922ae 100644
--- a/lib/Makefile.am
+++ b/lib/Makefile.am
@@ -39,8 +39,17 @@ libeu_a_SOURCES = xstrdup.c xstrndup.c xmalloc.c next_prime.c \
 
 noinst_HEADERS = fixedsizehash.h libeu.h system.h dynamicsizehash.h list.h \
 		 md5.h sha1.h eu-config.h color.h printversion.h
-EXTRA_DIST = dynamicsizehash.c
+EXTRA_DIST = dynamicsizehash.c features.h.in
 
 if !GPROF
 xmalloc_CFLAGS = -ffunction-sections
 endif
+
+if SELFCONTAINED
+install: install-am features.h.in
+	$(mkinstalldirs) $(DESTDIR)$(includedir)
+	$(INSTALL_HEADER) $(top_srcdir)/lib/features.h.in $(DESTDIR)$(includedir)/features.h
+
+uninstall: uninstall-am
+	rm -f $(DESTDIR)$(includedir)/features.h
+endif
diff --git a/lib/features.h.in b/lib/features.h.in
new file mode 100644
index 00000000..099f4211
--- /dev/null
+++ b/lib/features.h.in
@@ -0,0 +1,43 @@
+/* This file defines uid_t, gid_t, mode_t, pid_t
+   Copyright (C) 2017 The Qt Company Ltd
+   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 _FEATURES_H
+#define _FEATURES_H 1
+
+#include <stdint.h>
+
+typedef uint32_t uid_t;
+typedef uint32_t gid_t;
+typedef uint32_t mode_t;
+#ifdef _WIN64
+typedef int64_t  pid_t
+#else
+typedef int32_t  pid_t;
+#endif
+
+#endif /* features.h */