向 qmake 添加一个带有值的定义?

发布于 2024-09-11 12:07:32 字数 247 浏览 3 评论 0 原文

如何使用带有值的 qmake 添加定义:

例如,这在我的 .pro 文件中不起作用(如我所料):

DEFINES += WINVER 0x0500

也不

DEFINES += "WINVER 0x0500"

如何在任何内容开始编译之前将 WINVER 定义为 0x0500,以便它的定义不会受到任何影响通过编译或包含顺序的方式?

How do I add a define with qmake WITH a value:

For example, this does not work (as I expected) in my .pro file:

DEFINES += WINVER 0x0500

nor

DEFINES += "WINVER 0x0500"

How do I define WINVER as 0x0500 before anything starts compiling so it's definition is not affected in any way by compilation or include order?

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白龙吟 2024-09-18 12:07:32

DEFINES += "WINVER=0x0500" 对我有用。

这样,-DWINVER=0x0500 就被添加到编译器的命令行中,这是 GCC/mingw 期望的命令行预处理器定义语法(请参阅 此处 了解详细信息)。

DEFINES += "WINVER=0x0500" works for me.

This way, -DWINVER=0x0500 is added to the command line of the compiler, which is the syntax GCC/mingw expects for command line preprocessor definitions (see here for the details).

凯凯我们等你回来 2024-09-18 12:07:32
DEFINES += MY_DEF=\\\"String\\\"

当打算将宏替换为字符串元素时,将使用此格式

DEFINES += MY_DEF=\\\"String\\\"

This format is to be used when one intends to have the macro replaced by string element

橘和柠 2024-09-18 12:07:32

作为附录,如果您想执行 shell 代码而不仅仅是设置常量(例如获取版本号或日期):

请使用 $$system()。这是执行qmake时运行:

DEFINES += GIT_VERSION=$system(git describe --always)

或者如果代码应该在每个构建上运行(即当执行makefile时),则使用$() )。
对于DEFINES,如果命令包含空格,则需要对其进行转义,否则 qmake 会插入不需要的-D

DEFINES += GIT_VERSION='$(shell git describe --always)'

然后这将被逐字复制到 makefile 中。

如果命令的输出包含空格,则需要另一层擒纵(这次是 make):

DEFINES += BUILD_DATE='"$(shell date)"'

如果您需要在值周围加上引号来获取字符串,则它会变得有点难看:

DEFINES += BUILD_DATE='"\\\"$(shell date)\\\""'

在这种情况下,我建议使用预处理器 stringify 操作:

#define _STR(x) #x
#define STRINGIFY(x)  _STR(x)

printf("this was built on " STRINGIFY(BUILD_DATE) "\n");

As an addendum, if you want to execute shell code instead of just setting a constant (e.g. for getting a version number or a date):

Either use $$system(). This is run when qmake is executed:

DEFINES += GIT_VERSION=$system(git describe --always)

Or use $() if the code should be run on every build (i.e. when the makefile is executed).
For DEFINES you need to escape the command if it contains spaces, otherwise qmake inserts unwanted -D's:

DEFINES += GIT_VERSION='$(shell git describe --always)'

This will then be copied literally into the makefile.

If the command's output contains spaces, you need another layer of escapement (this time for make):

DEFINES += BUILD_DATE='"$(shell date)"'

If you need quotes around your value to get a string, it gets a bit ugly:

DEFINES += BUILD_DATE='"\\\"$(shell date)\\\""'

I would recommend to use the preprocessors stringify operation in this case:

#define _STR(x) #x
#define STRINGIFY(x)  _STR(x)

printf("this was built on " STRINGIFY(BUILD_DATE) "\n");
没有伤那来痛 2024-09-18 12:07:32

#define STRING "Value with space" fro Qt *.PRO file :

为了从 QT 项目文件添加#define STRING "Value with space",我们必须write :

DEFINES += "VERSION_LOG=\"\\\"Version 2.5.1\\\"\""
DEFINES += "VERSION_QT=\"\\\"Qt 5.10\\\"\""

写入 Makefile.Release 文件:

DEFINES       = -DUNICODE -D_UNICODE -DVERSION_LOG="\"Version 2.5.1\"" -DVERSION_QT="\"Qt 5.10\"" -DQT_NO_DEBUG [...]

总之,在该行上: DEFINES += "VERSION_LOG=\"\\\"Version 2.5.1\\\"\""

第一个最后一个 " 告诉 QMake 将整个句子作为字符串读取

第一个和最后一个 \" 将第一个和最后一个 " 写入 -DVERSION_LOG="\"Version 2.5.1\""

第一个和最后一个 \\\" 写入 \,然后写入 "-DVERSION_LOG="\"版本 2.5.1\""

#define STRING "Value with spaces" fro Qt *.PRO file :

In order to add a #define STRING "Value with spaces" from QT Project file, we had to write :

DEFINES += "VERSION_LOG=\"\\\"Version 2.5.1\\\"\""
DEFINES += "VERSION_QT=\"\\\"Qt 5.10\\\"\""

which gives into the Makefile.Release file :

DEFINES       = -DUNICODE -D_UNICODE -DVERSION_LOG="\"Version 2.5.1\"" -DVERSION_QT="\"Qt 5.10\"" -DQT_NO_DEBUG [...]

In summary, on that line : DEFINES += "VERSION_LOG=\"\\\"Version 2.5.1\\\"\""

The first and last " tells QMake to read the entire sentence as a string

The first and last \" writes the first and last " into -DVERSION_LOG="\"Version 2.5.1\""

The first and last \\\" writes a \ then a " into -DVERSION_LOG="\"Version 2.5.1\""

葬﹪忆之殇 2024-09-18 12:07:32

Greg 的答案在 .pro 文件中运行良好。然而,当从命令行调用 qmake 时,我不得不去掉空格,即使用某物。像下面这样,进行定义工作:

qmake DEFINES+="WINVER 0x0500"

Greg's answer works fine in a .pro file. However, when calling qmake from the command line, I had to leave away the spaces, i.e. use sth. like the following, to make a define work :

qmake DEFINES+="WINVER 0x0500"
新一帅帅 2024-09-18 12:07:32

如果你想定义一个在 Objective-C 中使用的字符串文字,那么你需要记住转义引号之前的 @

DEFINES += MY_DEF='@\\"string-literal\\"'

If you want to define a string literal for use in Objective-C then you need to remember the @ before the escaped quotes

DEFINES += MY_DEF='@\\"string-literal\\"'
夜无邪 2024-09-18 12:07:32

如果您在 bash 脚本中运行 qmake 并希望使用 bash 脚本中的版本(semver)作为 QString 变量,您可以执行以下操作:

在 bash 中:

qmake Project.pro DEFINES+=VERSION=\"1.0.0\"

在 .cpp 中:

#define _STR(x) #x
#define STRINGIFY(x)  _STR(x)

QString version = QString(STRINGIFY(VERSION))

If you run qmake in bash script and want to use VERSION (semver) from bash script as QString variable, you can do:

In bash:

qmake Project.pro DEFINES+=VERSION=\"1.0.0\"

In .cpp:

#define _STR(x) #x
#define STRINGIFY(x)  _STR(x)

QString version = QString(STRINGIFY(VERSION))
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