1 files changed, 59 insertions, 0 deletions
diff --git a/scripts/os.c b/scripts/os.c
new file mode 100644
index 000000000000..212a61772ccf
--- /dev/null
+++ b/scripts/os.c
@@ -0,0 +1,59 @@
+/*
+ * *****************************************************************************
+ *
+ * SPDX-License-Identifier: BSD-2-Clause
+ *
+ * Copyright (c) 2018-2024 Gavin D. Howard and contributors.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are met:
+ *
+ * * Redistributions of source code must retain the above copyright notice, this
+ *   list of conditions and the following disclaimer.
+ *
+ * * Redistributions in binary form must reproduce the above copyright notice,
+ *   this list of conditions and the following disclaimer in the documentation
+ *   and/or other materials provided with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
+ * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE
+ * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+ * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+ * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
+ * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
+ * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+ * POSSIBILITY OF SUCH DAMAGE.
+ *
+ * *****************************************************************************
+ *
+ * File for testing compilation on different platforms.
+ *
+ */
+
+// This is used by configure.sh to test for OpenBSD.
+#ifdef BC_TEST_OPENBSD
+#ifdef __OpenBSD__
+#error On OpenBSD without _BSD_SOURCE
+#endif // __OpenBSD__
+#endif // BC_TEST_OPENBSD
+
+// This is used by configure.sh to test for FreeBSD.
+#ifdef BC_TEST_FREEBSD
+#ifdef __FreeBSD__
+#error On FreeBSD with _POSIX_C_SOURCE
+#endif // __FreeBSD__
+#endif // BC_TEST_FREEBSD
+
+// This is used by configure.sh to test for macOS.
+#ifdef BC_TEST_APPLE
+#ifdef __APPLE__
+#error On macOS without _DARWIN_C_SOURCE
+#endif // __APPLE__
+#endif // BC_TEST_APPLE
+
+extern int test;
+
+int test;