MacOS Compilation

- this compiles on my MacOS 15 system. But do the tests pass ?

ezsnmp/include/helpers.h

@@ -21,5 +21,13 @@ std::vector<Result> parse_results(std::vector<std::string> const &inputs);
 void remove_v3_user_from_cache(std::string const &security_name_str,
                                std::string const &context_engine_id_str);
 std::string print_objid_to_string(oid const *objid, size_t objidlen);
-
+#if NETSNMP_VERSION_MAJOR < 5 || \
+   (NETSNMP_VERSION_MAJOR == 5 && \
+    (NETSNMP_VERSION_MINOR < 6 || \
+     (NETSNMP_VERSION_MINOR == 6 && \
+      NETSNMP_VERSION_PATCH <= 2 ))) 
+#define NETSNMP_APPLICATION_CONFIG_TYPE "snmpapp"
+void netsnmp_cleanup_session(netsnmp_session *s);
+void netsnmp_get_monotonic_clock(struct timeval* tv);
+#endif
 #endif // HELPERS_H

ezsnmp/src/helpers.cpp

@@ -245,3 +245,100 @@ std::string print_objid_to_string(oid const *objid, size_t objidlen) {
    SNMP_FREE(buf);
    return ss.str();
 }
+
+
+#if NETSNMP_VERSION_MAJOR < 5 || \
+   (NETSNMP_VERSION_MAJOR == 5 && \
+    (NETSNMP_VERSION_MINOR < 6 || \
+     (NETSNMP_VERSION_MINOR == 6 && \
+      NETSNMP_VERSION_PATCH <= 2 ))) 
+
+/* Free the memory owned by a session but not the session object itself. */
+void netsnmp_cleanup_session(netsnmp_session *s)
+{
+    free(s->localname);
+    free(s->peername);
+    free(s->community);
+    free(s->contextEngineID);
+    free(s->contextName);
+    free(s->securityEngineID);
+    free(s->securityName);
+    free(s->securityAuthProto);
+    free(s->securityAuthLocalKey);
+    free(s->securityPrivProto);
+    free(s->securityPrivLocalKey);
+    free(s->paramName);
+// #ifndef NETSNMP_NO_TRAP_STATS
+    // free(s->trap_stats);
+// #endif /* NETSNMP_NO_TRAP_STATS */
+    // usm_free_user(s->sessUser);
+    memset(s, 0, sizeof(*s));
+}
+
+/**
+ * Query the current value of the monotonic clock.
+ *
+ * Returns the current value of a monotonic clock if such a clock is provided by
+ * the operating system or the wall clock time if no such clock is provided by
+ * the operating system. A monotonic clock is a clock that is never adjusted
+ * backwards and that proceeds at the same rate as wall clock time.
+ *
+ * @param[out] tv Pointer to monotonic clock time.
+ */
+void netsnmp_get_monotonic_clock(struct timeval* tv)
+{
+#if defined(HAVE_CLOCK_GETTIME) && defined(CLOCK_MONOTONIC)
+    struct timespec ts;
+    int res;
+
+    res = clock_gettime(CLOCK_MONOTONIC, &ts);
+    if (res >= 0) {
+        tv->tv_sec = ts.tv_sec;
+        tv->tv_usec = ts.tv_nsec / 1000;
+    } else {
+        gettimeofday(tv, NULL);
+    }
+#elif defined(WIN32)
+    /*
+     * Windows: return tick count. Note: the rate at which the tick count
+     * increases is not adjusted by the time synchronization algorithm, so
+     * expect an error of <= 100 ppm for the rate at which this clock
+     * increases.
+     */
+    typedef ULONGLONG (WINAPI * pfGetTickCount64)(void);
+    static int s_initialized;
+    static pfGetTickCount64 s_pfGetTickCount64;
+    uint64_t now64;
+
+    if (!s_initialized) {
+        HMODULE hKernel32 = GetModuleHandle("kernel32");
+        s_pfGetTickCount64 =
+            (pfGetTickCount64) GetProcAddress(hKernel32, "GetTickCount64");
+        s_initialized = TRUE;
+    }
+
+    if (s_pfGetTickCount64) {
+        /* Windows Vista, Windows 2008 or any later Windows version */
+        now64 = (*s_pfGetTickCount64)();
+    } else {
+        /* Windows XP, Windows 2003 or any earlier Windows version */
+        static uint32_t s_wraps, s_last;
+        uint32_t now;
+
+        now = GetTickCount();
+        if (now < s_last)
+            s_wraps++;
+        s_last = now;
+        now64 = ((uint64_t)s_wraps << 32) | now;
+    }
+    tv->tv_sec = now64 / 1000;
+    tv->tv_usec = (now64 % 1000) * 1000;
+#else
+    /* At least FreeBSD 4 doesn't provide monotonic clock support. */
+#warning Not sure how to query a monotonically increasing clock on your system. \
+Timers will not work correctly if the system clock is adjusted by e.g. ntpd.
+    gettimeofday(tv, NULL);
+#endif
+}
+
+#endif /* NETSNMP_VERSION <= 5.6.2 */

setup.py

@@ -53,7 +53,7 @@ def is_net_snmp_installed_macports():
 # Determine if a base directory has been provided with the --basedir option
 basedir = None
 in_tree = False
-compile_args = ["-std=c++17", "-Werror"]
+compile_args = ["-std=c++17", "-Werror", "-Wno-error=#warnings"]
 link_args = []
 system_netsnmp_version = check_output("net-snmp-config --version", shell=True).decode()
 homebrew_version = None