added : xxhash namespace enforced from xxhash.h.

added : xxhash namespace test.
removed : -DXXH_NAMESPACE

tests/namespaceTest.c

@@ -0,0 +1,38 @@
+/* ##########################################################################
+# namespaceTest
+# ensure xxhash namespace emulation is properly triggered
+# Copyright (C) Yann Collet 2016
+#
+# GPL v2 License
+#
+# 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 2 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.
+#
+# You can contact the author at :
+#  - zstd homepage : http://www.zstd.net/
+# ########################################################################*/
+
+
+#include <stddef.h>  /* size_t */
+#include <string.h>  /* strlen */
+
+/* symbol definition */
+extern unsigned XXH32(const void* src, size_t srcSize, unsigned seed);
+
+int main(int argc, const char** argv)
+{
+    const char* exename = argv[0];
+    unsigned result = XXH32(exename, strlen(exename), argc);
+    return !result;
+}