Initial skeleton of extension (#2)

* Added .gitignore

* Added initial attempt at autoconf config

* Skeleton C source

src/crt.c

@@ -0,0 +1,54 @@
+
+/**
+ * Copyright Amazon.com, Inc. or its affiliates. All Rights Reserved.
+ * SPDX-License-Identifier: Apache-2.0.
+ */
+
+#include "php_aws_crt.h"
+
+ZEND_DECLARE_MODULE_GLOBALS(awscrt);
+
+PHP_INI_BEGIN()
+STD_PHP_INI_ENTRY("awscrt.log_level", "", PHP_INI_ALL, OnUpdateLongGEZero, log_level, zend_awscrt_globals, awscrt_globals)
+PHP_INI_END()
+
+static PHP_MINIT_FUNCTION(awscrt)
+{
+    REGISTER_INI_ENTRIES();
+    return SUCCESS;
+}
+
+static PHP_MSHUTDOWN_FUNCTION(awscrt)
+{
+    UNREGISTER_INI_ENTRIES();
+
+    return SUCCESS;
+}
+
+static PHP_GINIT_FUNCTION(awscrt)
+{
+#if defined(COMPILE_DL_ASTKIT) && defined(ZTS)
+    ZEND_TSRMLS_CACHE_UPDATE();
+#endif
+    awscrt_globals->log_level = 0;
+}
+
+zend_module_entry awscrt_module_entry = {
+    STANDARD_MODULE_HEADER,
+    "awscrt",
+    NULL, /* functions */
+    PHP_MINIT(awscrt),
+    PHP_MSHUTDOWN(awscrt),
+    NULL, /* RINIT */
+    NULL, /* RSHUTDOWN */
+    NULL, /* MINFO */
+    NO_VERSION_YET,
+    PHP_MODULE_GLOBALS(awscrt),
+    PHP_GINIT(awscrt),
+    NULL, /* GSHUTDOWN */
+    NULL, /* RPOSTSHUTDOWN */
+    STANDARD_MODULE_PROPERTIES_EX};
+
+#ifdef COMPILE_DL_AWSCRT
+ZEND_GET_MODULE(awscrt)
+#endif

src/php_aws_crt.h

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+
+#ifndef PHP_AWS_CRT_H
+#define PHP_AWS_CRT_H
+
+/**
+ * Copyright Amazon.com, Inc. or its affiliates. All Rights Reserved.
+ * SPDX-License-Identifier: Apache-2.0.
+ */
+
+#ifdef HAVE_CONFIG_H
+#include "config.h"
+#endif
+
+#include "php.h"
+
+ZEND_BEGIN_MODULE_GLOBALS(awscrt)
+long log_level;
+ZEND_END_MODULE_GLOBALS(awscrt)
+
+ZEND_EXTERN_MODULE_GLOBALS(awscrt)
+
+#define AWSCRT_GLOBAL(v) ZEND_MODULE_GLOBALS_ACCESSOR(awscrt, v)
+
+#endif /* PHP_AWS_CRT_H */