first commit

projecten1/lib/python3.6/site-packages/numpy/distutils/command/autodist.py

@@ -0,0 +1,96 @@
+"""This module implements additional tests ala autoconf which can be useful.
+
+"""
+from __future__ import division, absolute_import, print_function
+
+
+# We put them here since they could be easily reused outside numpy.distutils
+
+def check_inline(cmd):
+    """Return the inline identifier (may be empty)."""
+    cmd._check_compiler()
+    body = """
+#ifndef __cplusplus
+static %(inline)s int static_func (void)
+{
+    return 0;
+}
+%(inline)s int nostatic_func (void)
+{
+    return 0;
+}
+#endif"""
+
+    for kw in ['inline', '__inline__', '__inline']:
+        st = cmd.try_compile(body % {'inline': kw}, None, None)
+        if st:
+            return kw
+
+    return ''
+
+def check_restrict(cmd):
+    """Return the restrict identifier (may be empty)."""
+    cmd._check_compiler()
+    body = """
+static int static_func (char * %(restrict)s a)
+{
+    return 0;
+}
+"""
+
+    for kw in ['restrict', '__restrict__', '__restrict']:
+        st = cmd.try_compile(body % {'restrict': kw}, None, None)
+        if st:
+            return kw
+
+    return ''
+
+def check_compiler_gcc4(cmd):
+    """Return True if the C compiler is GCC 4.x."""
+    cmd._check_compiler()
+    body = """
+int
+main()
+{
+#if (! defined __GNUC__) || (__GNUC__ < 4)
+#error gcc >= 4 required
+#endif
+    return 0;
+}
+"""
+    return cmd.try_compile(body, None, None)
+
+
+def check_gcc_function_attribute(cmd, attribute, name):
+    """Return True if the given function attribute is supported."""
+    cmd._check_compiler()
+    body = """
+#pragma GCC diagnostic error "-Wattributes"
+#pragma clang diagnostic error "-Wattributes"
+
+int %s %s(void*);
+
+int
+main()
+{
+    return 0;
+}
+""" % (attribute, name)
+    return cmd.try_compile(body, None, None) != 0
+
+def check_gcc_variable_attribute(cmd, attribute):
+    """Return True if the given variable attribute is supported."""
+    cmd._check_compiler()
+    body = """
+#pragma GCC diagnostic error "-Wattributes"
+#pragma clang diagnostic error "-Wattributes"
+
+int %s foo;
+
+int
+main()
+{
+    return 0;
+}
+""" % (attribute, )
+    return cmd.try_compile(body, None, None) != 0