Month: January 2021

Mount ftrace control directory on Void Linux

On Void Linux, the /sys/kernel/tracing is empty, which means the ftrace control directory is not mounted automatically, so you need mount it manually:

# mount -t tracefs nodev /sys/kernel/tracing
# cd /sys/kernel/tracing
# ls
README                      free_buffer               set_event               trace_clock
available_events            function_profile_enabled  set_event_notrace_pid   trace_marker
available_filter_functions  hwlat_detector            set_event_pid           trace_marker_raw
......

Fix “glibconfig.h: No such file or directory” error

I installed glib-devel on Void Linux, and wrote a simple program for test. But the compilation reported following error:

# gcc -I/usr/include/glib-2.0 main.c -lglib-2.0
......
/usr/include/glib-2.0/glib/gtypes.h:32:10: fatal error: glibconfig.h: No such file or directory
   32 | #include <glibconfig.h>
      |          ^~~~~~~~~~~~~~
compilation terminated.

glibconfig.h is in /usr/lib/glib-2.0/include directory, so it should be added into header file search path:

# gcc -I/usr/include/glib-2.0 -I/usr/lib/glib-2.0/include main.c -lglib-2.0
#