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Qmake variables example. Replace functions can be divided into built-in functions .

Qmake variables example qmake is a build automation tool, which is shipped with Qt framework. Once you find the variable corresponding to your usecase, you can use it in your . ten different variables in the QMAKE_CXXFLAGS* pattern . myapp). pro are ignored, except CONFIG += ordered, which specifies that the subdirectories should be processed in the order in which they are given. I would run a compilation and look at the actual command line being executed which it shows in one of the tabs at the bottom, Platform-specific variables follow the naming pattern of the variables which they extend or modify, but include the name of the relevant platform in their name. For example: QMAKE_UIC = uic -L /path/to/plugin QT I am trying to use qmake to include all files in a directory (this project is an external subversion project with hundreds of files). Contents. Let's see the qmake manual about the -spec option: Properties. Share. This ensures that the right libraries are used, and that the generated makefile uses the correct syntax. For example: QMAKE_UIC = uic -L /path/to/plugin QT Platform-specific variables follow the naming pattern of the variables which they extend or modify, but include the name of the relevant platform in their name. qmake の基本的な動作は、各プロジェクトのビルド プロセスを定義する変数宣言によって影響を受けます。これらの変数宣言の一部は、各プラットフォームに共通するヘッダーやソース ファイルなどのリソースを宣言します。 For example: CONFIG Mot de passe. (예: com. Scheduled Pinned Locked Moved Solved General and Desktop 8 Posts 3 Posters 621 Views. For example: MY_VARIABLE = value Platform-specific variables follow the naming pattern of the variables which they extend or modify, but include the name of the relevant platform in their name. But I cannot simply create variables that contain the hash or pound character (#). If the test passes, true is returned and config_<test> is added to the CONFIG variable. 用MSVC2015_64bit编译器来实现64位的编译功能，但是~~就在几天前，当我打开电脑，就显示“Variable QMAKE. For example, QMAKE_LIBS can The first thing you need to do is add the lines that tell qmake about the source and header files that are part of your development project. i. Article lu fois. QMAKE_TARGET_BUNDLE_PREFIX와 QMAKE_BUNDLE의 값을 QMAKE_UIC. Features are collections of custom functions and definitions in . This variable contains the name of the qmake program itself and is placed in generated Makefiles. Do not use it for anything else or qmake might eat your children. There are two types of qmake functions: replace functions and test functions. For example: QMAKE_UIC = uic -L /path/to/plugin. Use the following to set a property in qmake: qmake -set VARIABLE VALUE. The general idea of what I'm making is this. qmake 的基本行为受到定义每个项目构建过程的变量声明的影响。 扩展为目标包的包标识符字符串，例如： com. QMAKE_CXXFLAGS_DEBUG. 9,883 4 4 We bake cookies in your browser for a better experience. ten different variables in the QMAKE_CFLAGS_* pattern, and. myapp 。通过连接 QMAKE_TARGET_BUNDLE_PREFIX 和 QMAKE_BUNDLE 的值来确定，并用句号 ( . How do I dynamically remove an element from a QML basic type list? Hot Network Questions Properties. QMAKE_CXXFLAGS. and hence I would start with QMAKE_CXXFLAGS which is documented as:. pro "SOME_VAR=${SOME_VAR}" does work for me, printing: Project With the following dummy qmake syntax I am trying to set an environment variable and then check it later: MY_VAR = true message("A") defined(MY_VAR){ message("B") } The unintuitive part for me is that upon running this qmake script, only "A" is The fundamental behavior of qmake is influenced by variable declarations that define the build process of each project. Note that you have to escape quotes and slashes in Ok, I made some headway, but am not really closer to a solution. cpp Variables. For example, there is a critical conf line that looks like this: QMAKE_CXX = $${CROSS_COMPILE}g++ SOME_VAR=value qmake qmake_variables. conf in my context in such manner that the CROSS_COMPILE variable must be defined. Follow answered Mar 21, 2013 at 12:37. isEmpty(variablename) Succeeds if the variable variablename is empty; otherwise fails. There are two types of qmake functions: replace functions and For example, the lists of values in the HEADERS and SOURCES variables are used to tell qmake about header and source files in the same directory as the project file. We'll add the source files to the project file first. Qmake variable seems to be empty after assigning a variable to it in a !defined condition. myapp 。通过连接 QMAKE_TARGET_BUNDLE_PREFIX 和 QMAKE_BUNDLE 的值来确定，并以句号 The QMAKESPEC environment variable tells qmake where to look to find platform and compiler specific information. in extension suffix in your srcdir and copies those files to the builddir by stripping the . ; QMAKE_EXT_PRL modifies the extension placed on library dependency files . qmake. ; QMAKE_EXT_UI modifies the extension used for Qt Designer UI files (usually in FORMS ). 0 Reference Documentation; Reference Replace Functions. pro" file which is a template pro file. qmake performs glob expansion after the file has been parsed, so when the FILES_TO_COPY -= overwrite qmake variable from command line. It is not enough to pass your value to qmake and print the variable out. Most other variables in library. In addition, you can create variables for your own use. conf and rarely needs to be modified. Variables describes the variables that are recognized by qmake when configuring the build process for projects. qmake 的基本行为受定义每个项目构建过程的变量声明的影响。 扩展为目标包的包标识符字符串，例如： com. For example: MY_VARIABLE = value There are no restricitions on what you do to your own variables, as qmake will just ignore them unless it needs to look at them for a scope. 9. Les indicateurs spécifiques aux modes débogage et release peuvent être ajustés en modifiant respectivement les variables QMAKE_CXXFLAGS_DEBUG et QMAKE_CXXFLAGS_RELEASE. Create a custom target in your . The locations of these directories are defined in a number of There's a lot of confusion here qmake and pro files can set environment variables for the compilation process, qputenv for the application itself (and its children). This is a bit somewhat silly limitation about qmake. This variable changes the extention used on generated object files. For example, if qmake looks for SOURCES and finds an entry that it cannot open, it For example, QMAKE_LIBS can be used to specify a list of libraries that a project needs to link against, and QMAKE_LIBS_X11 can be used to extend or override this list. In addition, you can create Variables describes the variables that are recognized by qmake when configuring the build process for projects. To retrieve this information back from qmake you can do: See for example the Qmake docs for variables which details. For example, if you are using Microsoft Visual Studio on Windows, then you would set the QMAKESPEC environment variable to I'm facing a problem with a project where I need to retrieve an environment variable to link some external libraries, that works correctly on Windows. To obtain the contents of an environment value when qmake is run, use the $$() operator: The flags specific to debug and release modes can be adjusted by modifying the QMAKE_CFLAGS_DEBUG and QMAKE_CFLAGS_RELEASE variables, respectively. example. Using this site means that you consent. pro file for macro usage in my actual code (VS 2015 project). e. The appropriate variable and value should be substituted for VARIABLE and VALUE. CONFIG = qt warn_on release link_prl QT = core gui Qt Creator runs qmake. I am trying to specify variable in my qMake *. You may use an environment variable named TARGET, but then you should assign it to a qmake variable name with another name. To retrieve this Platform-specific variables follow the naming pattern of the variables which they extend or modify, but include the name of the relevant platform in their name. If you do not specify val, the function tests whether var has been assigned in the file. Any suggestions? qt; shared-libraries; Share. For example: MY_VARIABLE = value QMake Manual. To retrieve this information back from qmake you can do: Adding New Configuration Features. This variable contains the C++ compiler flags that are used when QMAKE_EXT_YACC This variable changes the extention used on files given to yacc. for example, if I have the following CONFIG settings in my . The Qt Company Ltd. SOURCES = hello. Oldest to Newest I try to reproduce the behaviour with a minimal example. qmake provides built-in functions to allow the contents of variables to be processed, and to enable tests to be performed during the configuration process. This variable changes the interpretation of all suffixes in this list of values as files of type C++ Basic Qmake Usage. It also puts other useful info in the ini such as compile date and the latest git commit hash. conf: # <project root>/. For example: QMAKE_UIC = uic -L /path/to/plugin QT Big warning: LIBS is a built-in variable that is used by qmake for internal purposes. Improve this question. Variables can also be used internally to store temporary lists of values, and existing lists of values can be overwritten or extended with new values. Some of these declare resources, such as headers and source files, that are common to each platform. Las banderas específicas de los modos de depuración y lanzamiento se pueden ajustar modificando las variables QMAKE_CXXFLAGS_DEBUG y QMAKE_CXXFLAGS_RELEASE, respectivamente. ANDROID_ABIS Note: This variable applies only to Android targets. This is an example of the simplest possible . For example, a makespec may use QMAKE_LIBS to specify a list of libraries that each project needs to link against, and QMAKE_LIBS_X11 would be used to extend this list. 1. pro file as it was already mentioned, i. QMAKE_UIC. 2. exe with the following option: -spec win32-msvc2010. It can be used to specify arguments to tquic as well, such as additional plugin paths. Oldest to Newest. QMAKE_EXT_OBJ. For example, if qmake looks for SOURCES and finds an entry that it cannot open, Variables. The value of this variable is typically handled by qmake or qmake. UPDATE: After seeing You need to be aware of that as several qmake functions, including this, need to have a local variable around to be able to work with. You can read about qmake variables here. Replace functions can be divided into built-in functions QMAKE_UIC. It does similar job to tools such as CMake or GNU Autotools, but it is designed to be used specifically with Qt. in suffix, and most importantly by expanding (substituting) any qmake variable defined in the file. Follow answered Mar 9, 2011 at QMAKE_EXT_YACC This variable changes the extention used on files given to yacc. This is an alias for the CONFIG function. qmake の基本的な動作は、各プロジェクトのビルド プロセスを定義する変数宣言によって影響を受けます。これらの変数宣言の一部は、各プラットフォームに共通するヘッダーやソース ファイルなどのリソースを宣言します。 For example: CONFIG Does Qt Creator set a qmake variable containing the build directory that can be referenced from the Qt project file? The Qt Creator Default build directory: The feature file needs to be injected into each subproject, for example by . The following example function takes a variable name as its only argument, extracts a list of values from the variable with the eval() built-in function, and compiles a list of qmake provides functions for processing the contents of variables during the configuration process. ANDROID_ABIS; ANDROID_API_VERSION; ANDROID_APPLICATION_ARGUMENTS The following variables can be used to redefine common file extensions recognized by qmake: QMAKE_EXT_MOC modifies the extension placed on included moc files. QMAKE_EXT_CPP. Variables. qmake lets you create your own features that can be included in project files by adding their names to the list of values specified by the CONFIG variable. Stack Overflow for Teams Where developers & technologists share private knowledge with coworkers; Advertising & Talent Reach devs & technologists worldwide about your product, service or employer brand; OverflowAI GenAI features for Teams; OverflowAPI Train & fine-tune LLMs; Labs The future of collective knowledge sharing; About the company The fundamental behavior of qmake is influenced by variable declarations that define the build process of each project. For example if you look in to the "plaincppapp/qmake" folder, there you can see a "project. This variable changes the interpretation of all suffixes in this list of values as files of type C++ For example, QMAKE_LIBS can be used to specify a list of libraries that a project needs to link against, and QMAKE_LIBS_X11 can be used to extend or override this list. . For example: QMAKE_UIC = tquic -L /path/to/plugin RC_FILE This hello package is created with CMake, but that doesn’t matter for this example, as it can be consumed from a qmake project with the configuration showed before. You can just edit that file like: TEMPLATE = app CONFIG += console CONFIG -= app_bundle CONFIG -= qt CONFIG += C++11 #added this line SOURCES += main. To Use the following to set a property in qmake: qmake -set VARIABLE VALUE. Specifies the C++ compiler flags for debug builds. qmake의 기본 동작은 각 프로젝트의 빌드 프로세스를 정의하는 변수 선언의 영향을 받습니다. Variable Reference. This variable contains the location of tquic if it is not in the path. It becomes the name of the executable or library you are building. Read More For example, the list of values in the HEADERS and SOURCES variables are used to tell qmake about header and source files in the same directory as the project file. ANDROID_ABIS The already mentioned QT_INSTALL_LIBS is listed there for example. setAttribute isn't even about environment variables - it's about some particular settings of the QGuiApplication. The qmake specification is written in . Going back to the distclean example, let's say you want to add a command to remove all *~ files:. 1@memsharded/testing dependency: $ Variables. e: @qmake DEFINES+=MY_DEFINE@ the if you can check in the . pro file:. Nonworking example: lines = "/* La valeur de cette variable est généralement gérée par qmake ou qmake. ) 分隔。 Meaning variables set() there are only visible there and they make a copy of all normal variables of the scope level they are called from (called parent scope). For example, the lists of values in the HEADERS In addition, you can create variables for your own use. There will be somewhere in "Build" where it tells you what compiler options it uses. El valor de esta variable suele gestionarse mediante qmake o qmake. This variable contains the location of qmake if it is not in the path. Publié le 27 décembre 2024 - Mis à jour le 27 décembre 2024 Liens sociaux . In such a case, the Makefile that qmake generates includes a rule that builds both versions, and this can be invoked in the following way: QMAKE_UIC. to use contains you have to define the variable when you run qmake. – rubenvb. For example: MY_VARIABLE = value So for example, in the questioners example, it understood the input to be CONFIG += "release MY_VAR = hello" This may not be true typing the command explicitly but when called from a script, levels of quoting get "consumed". L'article. QT TEMPLATE = subdirs This line says that library. conf yourself. So for example if you had a file version. QMAKE_QMAKE. Otherwise, false is Many of the variables used in project files are special variables that qmake uses when generating Makefiles, such as DEFINES, SOURCES, and HEADERS. hank hank. Typically, they return values that you can assign to other variables. prf files that can reside in one of many standard directories. Improve this answer. In Linux it looks like qmake (run from QtCreat The reference sections describe in detail the variables and functions that are available for use in qmake project files. You can obtain these values by prefixing a function with the $$ operator. For example, if you are using Microsoft Visual Studio on Windows, then you would set the QMAKESPEC environment variable to For example, QMAKE_LIBS can be used to specify a list of libraries that a project needs to link against, and QMAKE_LIBS_X11 can be used to extend or override this list. My python script gets QT variables from qMake such as build type, build bitness, qt version etc and creates an ini file with this information. Note: from the qmake documentation, squared brackets should be used for qmake properties ($$[]) I am trying to create a cross compiler build file using the QMAKE_EXTRA_COMPILERS qmake variable, In order to test it i thought of printing the values that the variable contains. 2; qmake Manual; Variables; Qt 6. cpp By default, this will create a Makefile that would build an executable from the The flags specific to debug and release modes can be adjusted by modifying the QMAKE_CXXFLAGS_DEBUG and QMAKE_CXXFLAGS_RELEASE variables, respectively. These functions are called replace functions. info. For example, the extension used for moc files can be redefined with the following assignment in a project file: I read though HERE, yet I still don't understand the syntax of the qmake CONFIG variable. QMake是一款由Qt提供的跨平台构建工具，它可以自动生成Makefiles和Visual Studio项目文件，方便开发人员编译、构建和部署他们的Qt项目。使用QMake，开发者可以轻松地在不同的平台上构建和测试他们的程序，加快了开发的速度和效率。本文将介绍关于QMake的基本知识和用法，帮助初学者快速了解和学习该 QMAKE_SPEC - the shortname of the host mkspec that is resolved and stored in the QMAKESPEC variable during a host build; QMAKE_VERSION - the current version of qmake; This is achieved by redefining certain built-in variables. Variables TARGET is an internal variable, that contains the base name of the project file by default. QMAKE_CXXFLAGS_DEBUG [Previous: qmake Variable Reference] [] [Next: Configuring qmake's Environment] qmake Function Reference. If you're using qmake for your project, you will have a . Function Reference. As such it is well integrated with Qt ecosystem, notably Qt Creator IDE. It can be used to specify arguments to uic as well, such as additional plugin paths. Functions that process the contents of variables typically return values that can be assigned to other Variables. You can provide the ABIs as a qmake argument: $ {} for build-in variables of QMake, such as $ {QMAKE_FILE_NAME}. L'auteur. Other useful variable type: $$[] This means "configuration option that were set when Qt was built" Example: This gives: qmake looks for certain variables in each project file, and it uses the contents of these to determine what it should write to a Makefile. Now let’s get the qmake project and install its hello/0. Given that they affect completely different things, there's no way to talk about pros and cons - How to read file content into a variable in qmake project file? For example, I'd like to have the contents of KEY read from a file and pass it to the compiler: DEFINES += KEY=**some magic and file Platform-specific variables follow the naming pattern of the variables which they extend or modify, but include the name of the relevant platform in their name. ANDROID_ABIS Many of the variables used in project files are special variables that qmake uses when generating Makefiles, such as DEFINES, SOURCES, and HEADERS. myapp 。通过连接 QMAKE_TARGET_BUNDLE_PREFIX 和 QMAKE_BUNDLE 的值来确定，并以句号 QMAKE_UIC. QT工程管理及Pro The fundamental behavior of qmake is influenced by variable declarations that define the build process of each project. It's easy to create your own variable; just name it and assign something to it. conf CONFIG += mycheck qtCompileTest(test) Builds a test project. I do have working examples like: DEFINES += COPYRIGHT_STRING="\"$${QMAKE_TARGET_COPYRIG For example, if we are in release mode, then the debug versions of files should not be copied. Loading Mot de passe oublié ? Je m'inscris ! (gratuit) You generally don't need to modify qmake. Generally, Qt Creator's project wizard will give you a good start. I am using qmake version 3. ANDROID_ABIS The second feature is the QMAKE_SUBSTITUTES qmake variable, which accepts files with a . conf et doit rarement être modifiée. QMAKE_CXXFLAGS_DEBUG Stack Overflow for Teams Where developers & technologists share private knowledge with coworkers; Advertising & Talent Reach devs & technologists worldwide about your product, service or employer brand; OverflowAI GenAI features for Teams; OverflowAPI Train & fine-tune LLMs; Labs The future of collective knowledge sharing; About the company Variables can be used to store the contents of environment variables. These can be evaluated at the time that qmake is run, or included in the generated Makefile for evaluation when the project is built. isActiveConfig. So if you are in a sub-directory or a function you can modify an already existing variable in Since the variable names can not contain any special characters, there's no danger of matching too much, unless a variable can be followed directly by more regular characters, in which case it's undecidable. See also File Extensions, YACCSOURCES. @AnneRanch I don't have Creator to hand. pro file: CONFIG(debug, debug|release) { m I want to write a configuration file with qmake that #defines a few values. For example AMDAPPSDKROOT and NVSDKCOMPUTE_ROOT should be defined as variables within the host operating system. qmake creates new variables with a given name when it encounters an assignment to that name. in containing: Since the debug option overrides the release option when both are defined in the CONFIG variable, it is necessary to use the debug_and_release option if you want to allow both debug and release versions of a project to be built. pro is just a container for other projects, contained within the subdirectories listed in the SUBDIRS variable. See also File Extensions. This variable changes the interpretation of all suffixes in this list of values as files of type C++ Qt 6. 이 중 일부는 각 플랫폼에 공통적인 헤더 및 소스 파일과 같은 리소스를 선언합니다. QMAKE_EXT_YACC This variable changes the extention used on files given to yacc. Valid values are: armeabi-v7a, arm64-v8a, x86, x86_64. pro file: @ What I am trying to do is to check if a system variable is defined. Commented Mar 4, 2011 at 21:49 | 1 Answer Sorted by: Reset to default 4 . For example, QMAKE_LIBS can Many of the variables used in project files are special variables that qmake uses when generating Makefiles, such as DEFINES, SOURCES, and HEADERS. This can be used to pass any number of variables to qmake. conf y rara vez requiere modificación. pro file in which you can put whatever you need. QMAKE. super was read (if present). The variable QMAKE_FILE_IN has been used in the example showed in the qt labs site by troll employee. The subprojects which include # At this point, the built-in variables have been set up and the project's # . Even there you might not be shown what your DEFINES are set to/what it will pass to the compiler. with $$[QT_INSTALL_PREFIX] for example. Specifies a list of Android target ABIs. sample code: Example. I think the issue has to do with including that snippet in multiple pro For example, adding this line is not solving the issue LIBS+= -Ldir_path -llibrary_name. pro file for the new commands, then add that target as a prerequisite to the standard target that you are modifying. qmake has a system of persistent information, this allows you to set a variable in qmake once, and each time qmake is invoked this value can be queried. pro file. This variable changes the interpretation of all suffixes in this list of values as files of type C++ The QMAKESPEC environment variable tells qmake where to look to find platform and compiler specific information. If you start Qt Creator and select File -> New File or Project -> Application -> Qt Widgets application, Qt Creator will Option 1. For example, QMAKE_LIBS can be used to specify a list of libraries that a project needs to link against, and QMAKE_LIBS Variables. QMAKE_CFLAGS_DEBUG Specifies the C compiler flags for debug builds. pro (“project”) files. BACKUP_REGISTRATION_FILE_MAEMO. When I run qmake it applies the mkspecs qmake. This variable contains the location of uic if it is not in the path. The first option is to create a custom target in the . Note that infile(filename, var, val) Succeeds if the file filename (when parsed by qmake itself) contains the variable var with a value of val; otherwise fails. For example: QMAKE_UIC = uic -L /path/to/plugin . QT It is possible for you to create your own variables so that you use them in scopes. bhcg jgrs backgq pdnxca gsfcp tppy lacw zmqlc byvkyz rowts itj dqhy qgjtla icbxtrey wvnbw