compat: Add pathconf dummy replacement for nacl

Signed-off-by: Jean-Baptiste Kempf <jb@videolan.org>

compat/pathconf.c

+/*****************************************************************************
+ * pathconf.c: POSIX pathconf() replacement
+ *****************************************************************************
+ * Copyright (C) 2017 VLC authors and VideoLAN
+ *
+ * Authors: Dennis Hamester <dhamester@jusst.de>
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU Lesser General Public License as published by
+ * the Free Software Foundation; either version 2.1 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 Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser 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.
+ *****************************************************************************/
+
+#ifdef HAVE_CONFIG_H
+# include <config.h>
+#endif
+
+#include <vlc_common.h>
+
+#ifdef __native_client__
+long pathconf (const char *path, int name)
+{
+    VLC_UNUSED(path);
+    VLC_UNUSED(name);
+    return -1;
+}
+#elif defined(_WIN32)
+/* Windows does not have pathconf, but that is OK */
+#else
+# error pathconf not implemented on your platform!
+#endif

configure.ac

@@ -596,7 +596,7 @@ need_libc=false
 
 dnl Check for usual libc functions
 AC_CHECK_FUNCS([daemon fcntl flock fstatvfs fork getenv getpwuid_r isatty lstat memalign mkostemp mmap open_memstream openat pread posix_fadvise posix_madvise setlocale stricmp strnicmp strptime tdestroy uselocale])
-AC_REPLACE_FUNCS([atof atoll dirfd fdopendir ffsll flockfile fsync getdelim getpid lldiv memrchr nrand48 poll posix_memalign recvmsg rewind sendmsg setenv strcasecmp strcasestr strdup strlcpy strndup strnlen strnstr strsep strtof strtok_r strtoll swab tfind timegm timespec_get strverscmp])
+AC_REPLACE_FUNCS([atof atoll dirfd fdopendir ffsll flockfile fsync getdelim getpid lldiv memrchr nrand48 poll posix_memalign recvmsg rewind sendmsg setenv strcasecmp strcasestr strdup strlcpy strndup strnlen strnstr strsep strtof strtok_r strtoll swab tfind timegm timespec_get strverscmp pathconf])
 AC_REPLACE_FUNCS([gettimeofday])
 AC_CHECK_FUNC(fdatasync,,
   [AC_DEFINE(fdatasync, fsync, [Alias fdatasync() to fsync() if missing.])

include/vlc_fixups.h

@@ -259,6 +259,10 @@ pid_t getpid (void) VLC_NOTHROW;
 int fsync (int fd);
 #endif
 
+#ifndef HAVE_PATHCONF
+long pathconf (const char *path, int name);
+#endif
+
 /* dirent.h */
 #ifndef HAVE_DIRFD
 int (dirfd) (DIR *);