Import Upstream version 2.72.4

glib/gnulib/gl_cv_func_ldexpl_works/meson.build

@@ -0,0 +1,57 @@
+# Copyright (C) 2002-2004, 2006-2018 Free Software Foundation, Inc.
+# This file is free software; the Free Software Foundation
+# gives unlimited permission to copy and/or distribute it,
+# with or without modifications, as long as this notice is preserved.
+
+ldexpl_test = '''
+#include <math.h>
+extern
+#ifdef __cplusplus
+"C"
+#endif
+
+#if !defined (_MSC_VER) || defined (TEST_LDEXPL_DECL)
+long double ldexpl (long double, int);
+#endif
+
+int main()
+{
+  int result = 0;
+  {
+    volatile long double x = 1.0;
+    volatile long double y = ldexpl (x, -1);
+    if (y != 0.5L)
+      result |= 1;
+  }
+  {
+    volatile long double x = 1.73205L;
+    volatile long double y = ldexpl (x, 0);
+    if (y != x)
+      result |= 2;
+  }
+  return result;
+}
+'''
+
+if not meson.is_cross_build() or meson.has_exe_wrapper()
+  run_result = cc.run(ldexpl_test,
+      name : 'ldexpl works',
+      dependencies : [libm])
+  gl_cv_func_ldexpl_works = run_result.compiled() and run_result.returncode() == 0
+else
+  if host_system.startswith ('aix')
+    gl_cv_func_ldexpl_works = false
+  elif host_system == 'windows'
+    gl_cv_func_ldexpl_works = true
+  else
+    gl_cv_func_ldexpl_works = true
+  endif
+endif
+
+ldexpl_test_decl = '''
+#define TEST_LDEXPL_DECL 1
+''' + ldexpl_test
+
+build_result = cc.compiles(ldexpl_test_decl,
+    name : 'ldexpl prototype can be re-listed')
+gl_cv_func_ldexpl_decl = build_result