Convert to library

.gitignore

@@ -1,3 +1,4 @@
 bin/
+lib/
 obj/
 coverage/

.vscode/c_cpp_properties.json

@@ -1,17 +0,0 @@
-{
-    "configurations": [
-        {
-            "name": "Linux",
-            "includePath": [
-                "${workspaceFolder}/**",
-                "/usr/include/libftdi1"
-            ],
-            "defines": [],
-            "compilerPath": "/usr/bin/clang",
-            "cStandard": "c11",
-            "cppStandard": "c++17",
-            "intelliSenseMode": "clang-x64"
-        }
-    ],
-    "version": 4
-}

Makefile

@@ -1,6 +1,8 @@
 CROSS_COMPILE ?=
 
 TARGET_FILE ?= ftdi_gpio
+STATIC_LIB_FILE ?= libftdi_gpio.a
+DYNAMIC_LIB_FILE ?= libftdi_gpio.so
 
 CC = $(CROSS_COMPILE)gcc
 CPP = $(CROSS_COMPILE)cpp
@@ -10,24 +12,28 @@ GENHTML = genhtml
 
 SRC_DIR = src
 OBJ_DIR = obj
+LIB_DIR = lib
 BIN_DIR = bin
 COVERAGE_DIR = coverage
 UNIT_TEST_SRC_DIR = test/unit
 UNIT_TEST_OBJ_DIR = $(OBJ_DIR)/$(UNIT_TEST_SRC_DIR)
 
+PREFIX ?= /usr
+LIB_INSTALL_DIR ?= $(PREFIX)/lib/ftdi_gpio
+INC_INSTALL_DIR ?= $(PREFIX)/include/ftdi_gpio
+
 INCLUDES := inc
 INCLUDES += /usr/include/libftdi1
 
 ifneq "$(findstring $(MAKECMDGOALS), build_unit_test exec_unit_test coverage)" ""
 INCLUDES += test/inc
-
 C_FLAGS += --coverage
 L_FLAGS += --coverage
-
-else
-LIBS := ftdi1
 endif
 
+L_FLAGS += -shared -Wl,-soname,$(notdir $(DYNAMIC_LIB))
+C_FLAGS += -fpic
+
 C_FLAGS += -O0 -g -Wall -Wextra -Werror
 CPP_FLAGS += $(addprefix -I, $(INCLUDES))
 CHECK_FLAGS = --enable=all --template=gcc --error-exitcode=1 --suppress=missingIncludeSystem
@@ -40,13 +46,30 @@ UNIT_TEST_OBJS = $(patsubst $(SRC_DIR)%,$(OBJ_DIR)%,$(patsubst $(UNIT_TEST_SRC_D
 
 OBJS = $(C_OBJS)
 
-TARGET = $(BIN_DIR)/$(TARGET_FILE)
+STATIC_LIB = $(LIB_DIR)/$(STATIC_LIB_FILE)
+DYNAMIC_LIB = $(LIB_DIR)/$(DYNAMIC_LIB_FILE)
 UNIT_TEST_TARGET = $(BIN_DIR)/$(UNIT_TEST_SRC_DIR)/$(TARGET_FILE)
 
 THIS_MAKEFILE := $(lastword $(MAKEFILE_LIST))
 
-.PHONY: all
-all: $(TARGET)
+.PHONY: all install clean
+all: $(STATIC_LIB) $(DYNAMIC_LIB)
+
+install: all
+	install -d $(LIB_INSTALL_DIR)
+	install -d $(INC_INSTALL_DIR)
+	install -m 0644 $(STATIC_LIB) $(LIB_INSTALL_DIR)
+	install -m 0777 $(DYNAMIC_LIB) $(LIB_INSTALL_DIR)
+	install -m 0644 inc/* $(INC_INSTALL_DIR)
+
+clean:
+	rm -f $(STATIC_LIB) $(DYNAMIC_LIB)
+	rm -f $(OBJS) $(patsubst %.o,%.d,$(OBJS))
+	rm -f $(UNIT_TEST_OBJS) $(patsubst %.o,%.d,$(UNIT_TEST_OBJS)) $(UNIT_TEST_TARGET)
+	rm -f $(UNIT_TEST_OBJ_DIR)/*.gcda
+	rm -f $(UNIT_TEST_OBJ_DIR)/*.gcno
+	rm -f $(OBJ_DIR)/*.gcda $(OBJ_DIR)/*.gcno
+	rm -fr $(COVERAGE_DIR)
 
 .PHONY: coverage
 coverage: _cov_genhtml
@@ -80,11 +103,15 @@ check: $(C_SRCS)
 
 $(UNIT_TEST_TARGET): $(UNIT_TEST_OBJS) $(THIS_MAKEFILE)
 	@mkdir -p $(BIN_DIR)/$(UNIT_TEST_SRC_DIR)
-	$(CC) $(C_FLAGS) $(LD_FLAGS) $(UNIT_TEST_OBJS) $(addprefix -l,$(LIBS)) -o $@
+	$(CC) $(C_FLAGS) $(LD_FLAGS) $(UNIT_TEST_OBJS) -o $@
 
-$(TARGET): $(OBJS) $(THIS_MAKEFILE)
-	@mkdir -p $(BIN_DIR)
-	$(CC) $(C_FLAGS) $(LD_FLAGS) $(OBJS) $(addprefix -l,$(LIBS)) -o $@
+$(STATIC_LIB): $(OBJS) $(THIS_MAKEFILE)
+	@mkdir -p $(LIB_DIR)
+	$(AR) rcs $(STATIC_LIB) $(OBJS)
+
+$(DYNAMIC_LIB): $(OBJS) $(THIS_MAKEFILE)
+	@mkdir -p $(LIB_DIR)
+	$(CC) $(L_FLAGS) -o $(DYNAMIC_LIB) $(OBJS)
 
 .PRECIOUS: $(OBJ_DIR)/%.d
 $(OBJ_DIR)/%.d: $(SRC_DIR)/%.c
@@ -104,13 +131,6 @@ $(UNIT_TEST_OBJ_DIR)/%.o: $(UNIT_TEST_SRC_DIR)/%.c $(UNIT_TEST_OBJ_DIR)/%.d
 	@mkdir -p $(UNIT_TEST_OBJ_DIR)
 	$(CC) -c $(CPP_FLAGS) $(C_FLAGS) $< -o $@
 
-.PHONY: clean
-clean:
-	rm -f $(OBJS) $(patsubst %.o,%.d,$(OBJS)) $(TARGET)
-	rm -f $(UNIT_TEST_OBJS) $(patsubst %.o,%.d,$(UNIT_TEST_OBJS)) $(UNIT_TEST_TARGET)
-	rm -f $(OBJ_DIR)/*.gcda $(OBJ_DIR)/*.gcno
-	rm -fr $(COVERAGE_DIR)
-
 ifneq ($(MAKECMDGOALS),clean)
 -include $(patsubst %.o,%.d,$(OBJS))
 endif

src/main.c

@@ -1,63 +0,0 @@
-#include <stdio.h>
-#include <stdlib.h>
-#include <unistd.h>
-#include <syslog.h>
-#include <stdbool.h>
-#include <ftdi_dev.h>
-#include <gpio.h>
-
-/*
-#define GPIO1 0x08  // TX  (brown)
-#define GPIO2 0x01  // TX  (orange)
-#define GPIO3 0x02  // RX  (yellow)
-#define GPIO4 0x14  // RTS (green on FTDI) + DTR (on SparkFun breakout)
-*/
-
-static struct ftdi_dev ftdi_obj = {
-    .ftdi = NULL,
-    .is_open = false,
-    .vendor_id = 0x0403,
-    .product_id = 0x6001,
-    .bit_mask = 0,
-    .status_mask = 0,
-};
-
-static const struct gpio gpio_1 = {
-    .pin = 0x08, /* CTS (brown wire on FTDI cable) */
-    .ftdi_dev = &ftdi_obj,
-};
-static const struct gpio gpio_2 = {
-    .pin = 0x01, /* TX (orange wire on FTDI cable) */
-    .ftdi_dev = &ftdi_obj,
-};
-
-int main(void)
-{
-    int res, cnt;
-    unsigned int value;
-
-    openlog("ftdi_gpio", LOG_CONS | LOG_PID | LOG_NDELAY, LOG_LOCAL1);
-
-    res = gpio_open(&gpio_1);
-    res |= gpio_open(&gpio_2);
-    if(res != EXIT_SUCCESS) {
-        syslog(LOG_ERR, "Unable to open gpio\n");
-        return res;
-    }
-
-    gpio_write(&gpio_1, 1);
-    gpio_write(&gpio_2, 0);
-    for(cnt = 0; cnt < 10; cnt++) {
-        gpio_toggle(&gpio_1);
-        gpio_toggle(&gpio_2);
-        gpio_read(&gpio_1, &value);
-        printf("Gpio1: %u\n", value);
-        gpio_read(&gpio_2, &value);
-        printf("Gpio2: %u\n", value);
-        sleep(1);
-    }
-    gpio_close(&gpio_1);
-    gpio_close(&gpio_2);
-
-    return EXIT_SUCCESS;
-}