--- src/collectors/apps.plugin/apps_os_macos.c
+++ src/collectors/apps.plugin/apps_os_macos.c
@@ -136,6 +136,7 @@ bool apps_os_get_pid_cmdline_macos(struct pid_stat *p, char *cmdline, size_t max
     return true;
 }
 
+#if MAC_OS_X_VERSION_MIN_REQUIRED >= 110000
 bool apps_os_read_pid_io_macos(struct pid_stat *p, void *ptr) {
     struct pid_info *pi = ptr;
 
@@ -146,6 +147,11 @@ bool apps_os_read_pid_io_macos(struct pid_stat *p, void *ptr) {
 
     return true;
 }
+#else
+bool apps_os_read_pid_io_macos(struct pid_stat *p __maybe_unused, void *ptr __maybe_unused) {
+    return false;
+}
+#endif
 
 bool apps_os_read_pid_limits_macos(struct pid_stat *p __maybe_unused, void *ptr __maybe_unused) {
     return false;
@@ -319,11 +325,13 @@ bool apps_os_collect_all_pids_macos(void) {
             continue;
         }
 
+#if MAC_OS_X_VERSION_MIN_REQUIRED >= 110000
         st = proc_pid_rusage(pid, RUSAGE_INFO_V4, (rusage_info_t *)&pi.rusageinfo);
         if (st < 0) {
             netdata_log_error("Failed to get resource usage info for PID %d", pid);
             continue;
         }
+#endif
 
         incrementally_collect_data_for_pid(pid, &pi);
     }
--- src/collectors/apps.plugin/apps_plugin.h
+++ src/collectors/apps.plugin/apps_plugin.h
@@ -47,12 +47,15 @@
 #include <sys/proc_info.h>
 #include <sys/sysctl.h>
 #include <mach/mach_time.h> // For mach_timebase_info_data_t and mach_timebase_info
+#include <AvailabilityMacros.h>
 
 struct pid_info {
     struct kinfo_proc proc;
     struct proc_taskinfo taskinfo;
     struct proc_bsdinfo bsdinfo;
+#if MAC_OS_X_VERSION_MIN_REQUIRED >= 110000
     struct rusage_info_v4 rusageinfo;
+#endif
 };
 
 #define OS_INIT_PID                          1
--- src/collectors/timex.plugin/plugin_timex.c
+++ src/collectors/timex.plugin/plugin_timex.c
@@ -2,6 +2,12 @@
 
 #include "database/rrd.h"
 
+#ifdef OS_MACOS
+#include <AvailabilityMacros.h>
+#endif
+
+#if !defined(OS_MACOS) || (MAC_OS_X_VERSION_MIN_REQUIRED >= 101300)
+
 #define PLUGIN_TIMEX_NAME "timex.plugin"
 
 #define CONFIG_SECTION_TIMEX "plugin:timex"
@@ -182,3 +188,5 @@ void *timex_main(void *ptr)
 exit:
     return NULL;
 }
+
+#endif // !defined(OS_MACOS) || (MAC_OS_X_VERSION_MIN_REQUIRED >= 101300)
--- src/daemon/static_threads_macos.c
+++ src/daemon/static_threads_macos.c
@@ -2,10 +2,16 @@
 
 #include "common.h"
 
+#include <AvailabilityMacros.h>
+
 void *macos_main(void *ptr);
-void *timex_main(void *ptr);
+
+#if MAC_OS_X_VERSION_MIN_REQUIRED >= 101300
+    void *timex_main(void *ptr);
+#endif
 
 static const struct netdata_static_thread static_threads_macos[] = {
+#if MAC_OS_X_VERSION_MIN_REQUIRED >= 101300
     {
         .name = "P[timex]",
         .config_section = CONFIG_SECTION_PLUGINS,
@@ -15,6 +21,7 @@ static const struct netdata_static_thread static_threads_macos[] = {
         .init_routine = NULL,
         .start_routine = timex_main
     },
+#endif
     {
         .name = "P[macos]",
         .config_section = CONFIG_SECTION_PLUGINS,
--- src/database/rrddim.h
+++ src/database/rrddim.h
@@ -11,6 +11,13 @@ typedef struct rrddim_acquired RRDDIM_ACQUIRED;
 typedef struct ml_dimension rrd_ml_dimension_t;
 typedef struct rrdmetric_acquired RRDMETRIC_ACQUIRED;
 
+// gcc with libstdc++ may require this,
+// but with libc++ it does not work correctly.
+#if defined(__cplusplus) && !defined(_LIBCPP_VERSION)
+#include <cmath>
+using std::isnan;
+#endif
+
 #include "rrdset.h"
 
 // options are permanent configuration options (no atomics to alter/access them)
--- src/libnetdata/buffer/buffer.h
+++ src/libnetdata/buffer/buffer.h
@@ -10,6 +10,14 @@
 
 #define BUFFER_JSON_MAX_DEPTH 32 // max is 255
 
+// gcc with libstdc++ may require this,
+// but with libc++ it does not work correctly.
+#if defined(__cplusplus) && !defined(_LIBCPP_VERSION)
+#include <cmath>
+using std::isinf;
+using std::isnan;
+#endif
+
 extern const char hex_digits[16];
 extern const char hex_digits_lower[16];
 extern const char base64_digits[64];
--- src/libnetdata/os/adjtimex.c
+++ src/libnetdata/os/adjtimex.c
@@ -2,8 +2,13 @@
 
 #include "../libnetdata.h"
 
+#ifdef OS_MACOS
+#include <AvailabilityMacros.h>
+#endif
+
 int os_adjtimex(struct timex *buf __maybe_unused) {
-#if defined(OS_MACOS) || defined(OS_FREEBSD)
+#if (defined(OS_MACOS) && (MAC_OS_X_VERSION_MIN_REQUIRED >= 101300)) || \
+    defined(OS_FREEBSD)
     return ntp_adjtime(buf);
 #endif
 
--- src/libnetdata/os/adjtimex.h
+++ src/libnetdata/os/adjtimex.h
@@ -3,7 +3,12 @@
 #ifndef NETDATA_ADJTIMEX_H
 #define NETDATA_ADJTIMEX_H
 
-#if defined(OS_LINUX) || defined(OS_FREEBSD) || defined(OS_MACOS)
+#ifdef OS_MACOS
+#include <AvailabilityMacros.h>
+#endif
+
+#if defined(OS_LINUX) || defined(OS_FREEBSD) || \
+    (defined(OS_MACOS) && (MAC_OS_X_VERSION_MIN_REQUIRED >= 101300))
 #include <sys/timex.h>
 #endif
 
--- src/libnetdata/os/uuid_generate.c
+++ src/libnetdata/os/uuid_generate.c
@@ -24,7 +24,9 @@ void os_uuid_generate_time(void *out) {
 
 #else
 
-#if !defined(OS_MACOS)
+#if defined(OS_MACOS)
+#include <uuid/uuid.h>
+#else
 #include <uuid.h>
 #endif
 
--- src/ml/ml_kmeans.cc
+++ src/ml/ml_kmeans.cc
@@ -4,6 +4,14 @@
 #include "libnetdata/libnetdata.h"
 #include "dlib/dlib/clustering.h"
 
+// gcc with libstdc++ may require this,
+// but with libc++ it does not work correctly.
+#if !defined(_LIBCPP_VERSION)
+#include <cmath>
+using std::isinf;
+using std::isnan;
+#endif
+
 void
 ml_kmeans_init(ml_kmeans_t *kmeans)
 {