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编译报错：Ninja build error. The ninja build system cannot parse the build file
源码中新建自定义子系统simple，内部含uart_test.c，build.gn,bundle.json文件。
uart_test.c
#include <stdio.h>
#include <stdlib.h> //goto函数
#include <stdint.h> //unint8_t
#include <unistd.h> //sleep() //s
//#include "hdf_log.h" //路径： "//drivers/hdf_core/interfaces/inner_api/utils",
#include "uart_if.h" //路径： "//drivers/hdf_core/framework/include/platform",
// static int32_t UartTestSample(void)
// {
// }
int main(){
printf("uart_test begin\r\n");
printf("---------------------------\n");
int32_t ret;
uint32_t port;
uint32_t baud;
DevHandle handle = NULL;
uint8_t wbuff[5] = { 1, 2, 3, 4, 5 };
uint8_t rbuff[5] = { 0 };
struct UartAttribute attribute;
attribute.dataBits = UART_ATTR_DATABIT_8; // UART传输数据位宽，一次传输7个bit
attribute.parity = UART_ATTR_PARITY_NONE; // UART传输数据无校检
attribute.stopBits = UART_ATTR_STOPBIT_1; // UART传输数据停止位为1位
attribute.rts = UART_ATTR_RTS_DIS; // UART禁用RTS
attribute.cts = UART_ATTR_CTS_DIS; // UART禁用CTS
attribute.fifoRxEn = UART_ATTR_RX_FIFO_EN; // UART使能RX FIFO
attribute.fifoTxEn = UART_ATTR_TX_FIFO_EN; // UART使能TX FIFO
port = 3; // UART设备端口号，要填写实际平台上的端口号
handle = UartOpen(port); // 获取UART设备句柄
if (handle == NULL) {
printf("UartOpen(port) failed \r\n");
return HDF_FAILURE;
}
ret = UartSetBaud(handle, 1500000); // 设置UART波特率为1500000
if (ret != 0) {
printf("UartSetBaud: set baud failed, ret %d\n", ret);
goto ERR;
}
printf("UartOpen successful and uart port = %d\n",port);
ret = UartGetBaud(handle, &baud); // 获取UART波特率
if (ret != 0) {
printf("UartGetBaud: get baud failed, ret %d\n", ret);
goto ERR;
}
printf("UartSetBaud successful and uart baudrate = %d\n", baud);
ret = UartSetAttribute(handle, &attribute); // 设置UART设备属性
if (ret != 0) {
printf("UartSetAttribute: set attribute failed, ret %d\n", ret);
goto ERR;
}
printf("UartSetAttribute successful\n");
ret = UartGetAttribute(handle, &attribute); // 获取UART设备属性
if (ret != 0) {
printf("UartGetAttribute: get attribute failed, ret %d\n", ret);
goto ERR;
}
printf("UartGetAttribute successful\n");
ret = UartSetTransMode(handle, UART_MODE_RD_BLOCK); // 设置UART传输模式为非阻塞模式
if (ret != 0) {
printf("UartSetTransMode: set trans mode failed, ret %d\n", ret);
goto ERR;
}
printf("UartSetTransMode successful\n");
ret = UartWrite(handle, wbuff, 5); // 向UART设备写入5字节的数据
if (ret != 0) {
printf("UartWrite: write data failed, ret %d\n", ret);
goto ERR;
}
//printf("UartWrite successful and wbuff: %u\n",wbuff); //这里输出的为整型，所以引用符号应为d
//printf(wbuff);
for(int i=0;i<5;i++){
printf("write:%hhu\r\n",wbuff[i]);
}
// ret = UartRead(handle, rbuff, 5); // 从UART设备读取5字节的数据
// if (ret < 0) {
// printf("UartRead: read data failed, ret %d\n", ret);
// goto ERR;
// }
// //printf("UartRead successful and rbuff: %u\n",rbuff);
// //printf(rbuff);
// for(int i=0;i<5;i++){
// printf("%u",rbuff[i]);
// }
int j=1;
while(1){
ret=UartRead(handle, rbuff, 5);
if(ret<0){
printf("read fail\r\n");
goto ERR;
}
if(ret==-1||ret==0){
continue; //如果没读到，那就跳出循环再读
}
printf("readlen=:%d\n",ret);
for(int i=0;i<ret;i++){
printf("read:%02x\r\n",rbuff[i]); //按十六进制输出
}
j++;
printf("\n");
usleep(10*1000); //sleep 10ms
if(j>3)break;
}
printf(" function tests end\r\n");
ERR:
UartClose(handle); // 销毁UART设备句柄
return ret;
printf("---------------------------\n");
}BUILD.gn
import("//build/ohos.gni")
import("//drivers/hdf_core/adapter/uhdf2/uhdf.gni")
print("samples: compile rk3568_uart_test")
ohos_executable("A2_gcwuart") {
sources = [ "src/uart_test.c" ]
include_dirs = [
"//drivers/hdf_core/framework/include/platform",
"//third_party/bounds_checking_function/include",
]
deps = []
external_deps = [
"c_utils:utils",
"hdf_core:libhdf_utils",
"hdf_core:libhdf_platform",
]
cflags = [
"-Wall",
"-Wextra",
"-Werror",
"-Wno-format",
"-Wno-format-extra-args",
]
part_name = "A2_uart"
install_enable = true
}bundle.json
{
"name": "@ohos/A2_uart",
"description": "gcw uart test",
"version": "3.1",
"license": "Apache License 2.0",
"publishAs": "code-segment",
"segment": {
"destPath": "gcw/A2_uart"
},
"dirs": {},
"scripts": {},
"component": {
"name": "A2_uart",
"subsystem": "gcw",
"syscap": [],
"features": [],
"adapted_system_type": ["standard"],
"rom": "100KB",
"ram": "100KB",
"deps": {
"components": [
"c_utils",
"hdf_core"
],
"third_party": []
},
"build": {
"sub_component": [
"//gcw/A2_uart:A2_gcwuart"
],
"inner_kits": [],
"test": []
}
}
}按照以上方式添加，并在config.json和subsystem_config.json进行了修改。
subsystem_config.json
"uart": {
"path": "uart",
"name": "uart"
}config.json
{
"component": "A1_helloworld",
"features": []
},
{
"component": "B1_helloworld",
"features": []
},
{
"component": "A2_uart",
"features": []
},
{
"component": "A3_gpio",
"features": []
}
]
}尝试按照以上步骤进行操作，使用./build.sh --product-name rk3568 --build-target A2_uart编译，
！！！！
编译uart失败报错，报错日志如下：
[OHOS INFO] Excuting ninja command: /home/forlinx/forlinx-4.1-release/openharmony-4.1-release/prebuilts/build-tools/linux-x86/bin/ninja -w dupbuild=warn -C /home/forlinx/forlinx-4.1-release/openharmony-4.1-release/out/ok3568 A2_uart
[OHOS ERROR] ninja: error: unknown target 'A2_uart'
[OHOS ERROR] Traceback (most recent call last):
[OHOS ERROR] File "/home/forlinx/forlinx-4.1-release/openharmony-4.1-release/build/hb/containers/status.py", line 47, in wrapper
[OHOS ERROR] return func(args, *kwargs)
[OHOS ERROR] File "/home/forlinx/forlinx-4.1-release/openharmony-4.1-release/build/hb/modules/ohos_build_module.py", line 67, in run
[OHOS ERROR] raise exception
[OHOS ERROR] File "/home/forlinx/forlinx-4.1-release/openharmony-4.1-release/build/hb/modules/ohos_build_module.py", line 65, in run
[OHOS ERROR] super().run()
[OHOS ERROR] File "/home/forlinx/forlinx-4.1-release/openharmony-4.1-release/build/hb/modules/interface/build_module_interface.py", line 72, in run
[OHOS ERROR] raise exception
[OHOS ERROR] File "/home/forlinx/forlinx-4.1-release/openharmony-4.1-release/build/hb/modules/interface/build_module_interface.py", line 70, in run
[OHOS ERROR] self._target_compilation()
[OHOS ERROR] File "/home/forlinx/forlinx-4.1-release/openharmony-4.1-release/build/hb/modules/ohos_build_module.py", line 103, in _target_compilation
[OHOS ERROR] self.target_compiler.run()
[OHOS ERROR] File "/home/forlinx/forlinx-4.1-release/openharmony-4.1-release/build/hb/services/ninja.py", line 38, in run
[OHOS ERROR] self._execute_ninja_cmd()
[OHOS ERROR] File "/home/forlinx/forlinx-4.1-release/openharmony-4.1-release/build/hb/services/ninja.py", line 69, in _execute_ninja_cmd
[OHOS ERROR] SystemUtil.exec_command(
[OHOS ERROR] File "/home/forlinx/forlinx-4.1-release/openharmony-4.1-release/build/hb/util/system_util.py", line 64, in exec_command
[OHOS ERROR] LogUtil.get_failed_log(log_path)
[OHOS ERROR] File "/home/forlinx/forlinx-4.1-release/openharmony-4.1-release/build/hb/util/log_util.py", line 192, in get_failed_log
[OHOS ERROR] LogUtil.get_ninja_failed_log(log_path)
[OHOS ERROR] File "/home/forlinx/forlinx-4.1-release/openharmony-4.1-release/build/hb/util/log_util.py", line 157, in get_ninja_failed_log
[OHOS ERROR] raise OHOSException(
[OHOS ERROR] exceptions.ohos_exception.OHOSException: NINJA Failed! Please check error in /home/forlinx/forlinx-4.1-release/openharmony-4.1-release/out/ok3568/error.log, and for more build information in /home/forlinx/forlinx-4.1-release/openharmony-4.1-release/out/ok3568/build.log
[OHOS ERROR]
[OHOS ERROR] Code: 4015
[OHOS ERROR]
[OHOS ERROR] Reason: NINJA Failed! Please check error in /home/forlinx/forlinx-4.1-release/openharmony-4.1-release/out/ok3568/error.log, and for more build information in /home/forlinx/forlinx-4.1-release/openharmony-4.1-release/out/ok3568/build.log
[OHOS ERROR]
[OHOS ERROR] Error Type: ninja build error: unknown target
[OHOS ERROR]
[OHOS ERROR] Description: Ninja build error. The ninja build system cannot parse the build file.
[OHOS ERROR]
[OHOS ERROR] Solution: Please check that the target name is correct.
[OHOS ERROR] Please check that the BUILD.gn file including the target, is exists and valid.
[OHOS ERROR] Please check that the target belongs to a component and that component is in the product configuration.
[OHOS ERROR]
=====build error=====
这是openharmony开发场景吗？