Replace cmake CI with make tests/check targets

Adds tests and check targets to Makefile — no cmake required.
Each test binary is built with the correct flags (pthread, -lrt,
--wrap linker flags for prun/ptools_errptr). CI workflow installs
only build-essential, runs make tests then make check; exits non-zero
on any failure. All 8 test suites pass locally.

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

.github/workflows/ci.yml

@@ -17,13 +17,10 @@ jobs:
       - name: Install build dependencies
         run: |
           sudo apt-get update
-          sudo apt-get install -y cmake build-essential
-
-      - name: Configure (cmake)
-        run: cmake -B build
+          sudo apt-get install -y build-essential
 
       - name: Build test binaries
-        run: cmake --build build
+        run: make tests
 
       - name: Run tests
-        run: ctest --test-dir build --output-on-failure
+        run: make check

Makefile

@@ -106,6 +106,73 @@ else
 	EXECLDFLAGS += $(LIBLDFLAGS)
 endif
 
+# ---------------------------------------------------------------------------
+# Unit tests — standalone, no main-binary deps
+# ---------------------------------------------------------------------------
+UNIT_DIR := tests/unit-tests
+TESTS_DIR := tests
+
+TEST_CFLAGS  := -D_POSIX_C_SOURCE=200809L
+TEST_CXXFLAGS := -D_POSIX_C_SOURCE=200809L
+
+TEST_BINS := \
+	tests/test_pdbg_path \
+	tests/test_ptools_params \
+	tests/test_pfs_lock_ordering \
+	tests/test_ptask_free \
+	tests/test_prun \
+	tests/test_ptools_errptr \
+	tests/test_read_response \
+	tests/test_signal_safety
+
+.PHONY: tests check clean-tests
+
+tests: $(TEST_BINS)
+
+check: tests
+	@rc=0; \
+	for t in $(TEST_BINS); do \
+		echo "=== $$t ==="; \
+		$$t || rc=$$?; \
+	done; \
+	exit $$rc
+
+clean-tests:
+	rm -f $(TEST_BINS)
+
+tests/test_pdbg_path: $(UNIT_DIR)/test_pdbg_path.c
+	$(CC) $(TEST_CFLAGS) -o $@ $<
+
+tests/test_ptools_params: $(UNIT_DIR)/test_ptools_params.c
+	$(CC) $(TEST_CFLAGS) -o $@ $<
+
+tests/test_pfs_lock_ordering: $(UNIT_DIR)/test_pfs_lock_ordering.c
+	$(CC) $(TEST_CFLAGS) -o $@ $< -lpthread
+
+tests/test_ptask_free: $(UNIT_DIR)/test_ptask_free.c
+	$(CC) $(TEST_CFLAGS) -o $@ $< -lpthread
+
+tests/test_prun: $(UNIT_DIR)/test_prun.c
+	$(CC) -D_POSIX_C_SOURCE=199309L -o $@ $< \
+		-Wl,--wrap=pthread_create \
+		-Wl,--wrap=pthread_attr_destroy \
+		-Wl,--wrap=malloc \
+		-Wl,--wrap=free \
+		-lpthread
+
+tests/test_ptools_errptr: $(UNIT_DIR)/test_ptools_errptr.c
+	$(CC) $(TEST_CFLAGS) -o $@ $< \
+		-Wl,--wrap=malloc \
+		-Wl,--wrap=free
+
+tests/test_read_response: $(UNIT_DIR)/test_read_response.cpp
+	$(CXX) $(TEST_CXXFLAGS) -o $@ $<
+
+tests/test_signal_safety: $(TESTS_DIR)/test_signal_safety.c
+	$(CC) -D_DEFAULT_SOURCE -D_POSIX_C_SOURCE=200809L -o $@ $< -lpthread -lrt
+
+# ---------------------------------------------------------------------------
+
 .PHONY: all clean install install-logrotate uninstall
 
 all: $(TARGETS)