Added seeder API. Also overhauled compile-time detection of features.

inc/bearssl.h

@@ -135,4 +135,34 @@
 #include "bearssl_x509.h"
 #include "bearssl_pem.h"
 
+/** \brief Type for a configuration option.
+ *
+ * A "configuration option" is a value that is selected when the BearSSL
+ * library itself is compiled. Most options are boolean; their value is
+ * then either 1 (option is enabled) or 0 (option is disabled). Some
+ * values have other integer values. Option names correspond to macro
+ * names. Some of the options can be explicitly set in the internal
+ * `"config.h"` file.
+ */
+typedef struct {
+	/** \brief Configurable option name. */
+	const char *name;
+	/** \brief Configurable option value. */
+	long value;
+} br_config_option;
+
+/** \brief Get configuration report.
+ *
+ * This function returns compiled configuration options, each as a
+ * 'long' value. Names match internal macro names, in particular those
+ * that can be set in the `"config.h"` inner file. For boolean options,
+ * the numerical value is 1 if enabled, 0 if disabled. For maximum
+ * key sizes, values are expressed in bits.
+ *
+ * The returned array is terminated by an entry whose `name` is `NULL`.
+ *
+ * \return  the configuration report.
+ */
+const br_config_option *br_get_config(void);
+
 #endif