[sysprof] tools: feature test various sources behind __linux__

[Christian Hergert <chergert src gnome org>]

commit bd73d534d0fe28a175964ee15e19e03030881c68
Author: Christian Hergert <chergert redhat com>
Date:   Mon Nov 16 14:58:09 2020 -0800

    tools: feature test various sources behind __linux__

 src/tools/sysprof-cli.c | 6 ++++++
 1 file changed, 6 insertions(+)
---
diff --git a/src/tools/sysprof-cli.c b/src/tools/sysprof-cli.c
index cfd138f..7590e05 100644
--- a/src/tools/sysprof-cli.c
+++ b/src/tools/sysprof-cli.c
@@ -448,9 +448,11 @@ Examples:\n\
       g_object_unref (source);
     }
 
+#ifdef __linux__
   source = sysprof_proc_source_new ();
   sysprof_profiler_add_source (profiler, source);
   g_object_unref (source);
+#endif
 
 #ifdef __linux__
   if (!no_perf)
@@ -478,19 +480,23 @@ Examples:\n\
       g_object_unref (source);
     }
 
+#ifdef __linux__
   if (!no_cpu)
     {
       source = sysprof_hostinfo_source_new ();
       sysprof_profiler_add_source (profiler, source);
       g_object_unref (source);
     }
+#endif
 
+#ifdef __linux__
   if (!no_memory)
     {
       source = sysprof_memory_source_new ();
       sysprof_profiler_add_source (profiler, source);
       g_object_unref (source);
     }
+#endif
 
   if (!no_battery)
     {