A simple app to get run times from a thread

Just a quick app to test and demonstrate how to get run times from a
specific thread on FreeBSD.

Makefile

@@ -0,0 +1,16 @@
+# SPDX-FileCopyrightText: 2025 Eilertsens Kodeknekkeri
+# SPDX-FileCopyrightText: 2025 The FreeBSD Foundation
+# SPDX-FileContributor: Harald Eilertsen <haraldei@anduin.net>
+#
+# SPDX-License-Identifier: BSD-2-Clause
+
+CXXFLAGS += -Wall -Werror -pedantic -g -pthread
+LDFLAGS += -lprocstat -g
+
+all: test
+
+test: main.o fast_cpu_time.o procstat_cpu_time.o sysctl_cpu_time.o
+	$(CXX) $(CXXFLAGS) $(LDFLAGS) -o $@ $>
+
+clean:
+	@rm *.o test > /dev/null 2>&1