报错英文翻译为: 测试表达式后的额外字符 问题出现主要是:新建空的qmake项目,导入老项目的QT代码后, 导致新的qmake中的.pro文件,出现问题, 在文件的.pro某个设置参数配置中我的问题出现如下 Qt 报错: Extra characters after test expression 找到了.pro有问题的所在:(友情提示,有2处,大家能发现吗?)
SOURCES += \
../qtSerial/main.cpp \
../qtSerial/piclistwidget.cpp \
../qtSerial/uart_setting.cpp \
../qtSerial/user_interaction.cpp
tSerial/txt/131_lu.txt \
../qtSerial/txt/131_lu.txtZone.Identifier \
答案:
1、倒数第三行,最后没有换行符;
2、倒数第二行,开头的文件路径,自动导入时,出现错误;
将这两个问题解决后,就没有报错了。
附赠.pro文件,每次新建后,需要自己增加的前23行,注意TARGET这一项和 INCLUDEPATH这两项,每次都要检查与实际项目,是否一致。
QT += core gui serialport
greaterThan(QT_MAJOR_VERSION, 4): QT += widgets
CONFIG += c++14
TARGET = Serial_1
TEMPLATE = app
# The following define makes your compiler emit warnings if you use
# any Qt feature that has been marked deprecated (the exact warnings
# depend on your compiler). Please consult the documentation of the
# deprecated API in order to know how to port your code away from it.
DEFINES += QT_DEPRECATED_WARNINGS
# You can also make your code fail to compile if it uses deprecated APIs.
# In order to do so, uncomment the following line.
# You can also select to disable deprecated APIs only up to a certain version of Qt.
#DEFINES += QT_DISABLE_DEPRECATED_BEFORE=0x060000 # disables all the APIs deprecated before Qt 6.0.0
INCLUDEPATH += ../qtSerial/uan
#LIBS += -L"/usr/local/lib"
#LIBS += -lavcodec -lavdevice -lavfilter -lavformat -lavutil -lswresample -lswscale