Add sysconf replacement for win32

Change-Id: Ib99482a2aed2a27920824ee308a7cdd05f678080
Reviewed-by: Christian Kandeler <christian.kandeler@qt.io>

2 files changed, 49 insertions, 1 deletions

diff --git a/libgnu/Makefile.am b/libgnu/Makefile.am
index 5af121af..05a8f615 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
+EXTRA_DIST = endian.in.h byteswap.in.h sys_mman.win32.h mman_win32.c sysconf_win32.c
 CLEANFILES =
 SUFFIXES =
 
@@ -69,3 +69,9 @@ if USE_WIN32_MMAN
 libgnu_a_SOURCES += mman_win32.c
 endif
 endif
+
+if !HAVE_SYSCONF
+if USE_WIN32_SYSCONF
+libgnu_a_SOURCES += sysconf_win32.c
+endif
+endif
diff --git a/libgnu/sysconf_win32.c b/libgnu/sysconf_win32.c
new file mode 100644
index 00000000..34ddf4bc
--- /dev/null
+++ b/libgnu/sysconf_win32.c
@@ -0,0 +1,42 @@
+/* Replacement for sysconf() on windows
+   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/>.  */
+
+#include <config.h>
+#include <sysinfoapi.h>
+#include <errno.h>
+
+long int sysconf(int name) {
+  if (name == _SC_PAGESIZE) {
+    SYSTEM_INFO info;
+    GetSystemInfo(&info);
+    return info.dwPageSize;
+  } else {
+    errno = EINVAL;
+    return -1;
+  }
+}