Cmake if not target
shadow_notify(A) # Check if target B exists.
Two forms of conditional generator expressions are supported: $ ¶. Common pre-defined variables to check include: WIN32, UNIX, APPLE, and . There is no need to remove CMakeCache. False if the constant is 0, OFF, NO, FALSE, N, IGNORE, NOTFOUND, the empty string, or ends in the suffix -NOTFOUND. There is a choice of when the custom command should be executed.The following arguments specify compile definitions. It's not a reliable method for finding the target generator's platform. The add_definitions() and target_compile_definitions() commands are used to define preprocessor flags that can be used in . WIN32 is the variable that is set when compiling FOR a Windows target platform. Multiple arguments will be joined as a semicolon-separated list .if(NOT ARCH) set(ARCH x86_64-linux-gnu) endif() if(${ARCH} MATCHES aarch64-qnx) add_definitions(-D__aarch64_qnx__) endif() if(NOT . If we set the actual value of an option while calling CMake that will be overwritten. 변수 값이 변경될 때마다 메시지를 출력하거나 사용자 정의 명령을 실행할 수 .orgRecommandé pour vous en fonction de ce qui est populaire • Avis
NOT TARGET meaning?
You can specify as many commands as you want for a custom command. I can normally use it at the top of the source tree as is, but can NOT use . This will make sure the build always stops if the provided file doesn't exist, it's cross-platform safe and works in every version of cmake since 3.cpp: Must be compiled with MYLIB_PUBLIC defined, but not .
How to check whether a target has been added or not?
Additionally, IDEs will show the source files as part of the . Use the add_dependencies() command to add dependencies to or from other targets. Evaluates to true_string if condition is 1, or an empty string if condition evaluates to 0. By default, if the .This target is used inside of CMake’s own logic and added to projects automatically; projects do not need to mention the targets in project code at all. The target for cross-compiling, if supported.
How to detect target architecture using CMake?
The if command was written very early in CMake's history, predating the ${} variable evaluation syntax, and for convenience evaluates variables named by its arguments as shown in the above signatures.A library target name: The generated link line will have the full path to the linkable library file associated with the target.
then CMake creates 'build targets' for each executable. For SHARED, STATIC or OBJECT you always need to supply sources. It also creates other build targets, such as the 'all' build target, which builds everything. 2022if statement - CMake IF with multiple conditions26 nov.Visual Studio 2019's generator has no bitness suffix (and defaults to 64 bit) unless the user manually specifies a generator target platform in CMake.@RKum No, set() is used to define CMake variables, not preprocessor compile definitions. As explained in the documentation of the if command:.
Checking for CMake Variables
An external application is tasked with building, and currently does so by calling . Use the add_custom_command() command to generate a file with dependencies. Inevitably you'll need to use if() condition checks to test if some condition is met.
CMAKE_HOST_WIN32 is the variable that is set when compiling ON Windows.) to corresponded else clauses, which defines appropriate targets with ExternalProject_Add. The --target flag can only be given once, and only accepts a single target.Otherwise, you can declare it as IMPORTED, then cmake will not try to create a target for compilation either. Signatures of this command that specify a .Der if-Befehl wurde sehr früh in der Geschichte von CMake geschrieben, also vor der Variablenauswertungssyntax ${} , und wertet der Einfachheit halber Variablen aus, die nach seinen Argumenten benannt sind, wie in den obigen Signaturen gezeigt. By default nothing depends on the custom target.The shadow target will always exists, and if the actual target exists then the property will be set to 1 by shadow_notify. Portable Custom Commands ¶. The system used to build the software will be called the “build host,” and the system for which the software is built will be called the “target system” or “target platform.endif() #check shows target exists. This command offers three scopes for applying options: PUBLIC: Affects both the target itself and its . In CMake you have commands like add_custom_command and add_custom_target that have overlapping functionality, .Custom targets are not necessarily build artifacts.doesn't define CMake target . Now let us consider a simple custom . 2020CMake IF (something OR something else)22 oct. Follow answered Dec 22, 2020 at 22:18.You ran into a rather annoying it's not a bug, it's a feature behavior of CMake. It does not talk about .
CMake compare to empty string with STREQUAL failed
But what if you need logic to occur at build time or even install time? Generator . You can add custom targets to the build system with add_custom_target. It is up to that script to create a target, to define variables or to do something else.Cross Compiling With CMake. 100k 94 424 917. sample code snippet is below.1) project(cppTests) # How to check at this point the target of build if(TARGET cppTests) message(STATUS Target is . We need to remove CMakeCache. In many cases WIN32 and CMAKE_HOST_WIN32 will be .txt only if we decide not to specify the actual value and we want to use the default, while in a previous run of cmake we did specify a value different than the default one.This chapter will describe how to use custom commands and targets to perform complex tasks that CMake does not inherently support. If you are using CMake 3. So then you can write this in your cmake: add_libary(A a. SET(OperatingSystem Linux) I'd like to do a test of the form IF(${CMAKE_SYSTEM_NAME} NOT MATCHES Linux). 1 @RKum For checking if a preprocessor compile definition has already been specified . asked Dec 7, 2014 at 3:38.19, an INTERFACE library target may optionally contain source files. I understand there is CMAKE_OSX_ARCHITECTURES, but this can be empty if not set, in which case it seems to default to whatever the system is capable of.I added it before my first check in the code snippet above, and it does not enter the true block.
cmake(二十七)Cmake中target再理解
1、if (NOT TARGET XX) 官方文档. kgurney November 19, 2021, 6:39pm 1. Some compiler drivers are inherently cross-compilers, such as clang and QNX qcc. The named target must be created by add_library() within the project or as an IMPORTED library . May 15, 2020 at 9:09.
What does
Follow answered May 9, 2016 at 18:17. They will be executed in the order specified.Temps de Lecture Estimé: 50 secondes
Conditional if/else
However, this builds all targets, and sometimes I only want to build a subset, like A and B but not C.txt when you run make.) target_compile_definitions. SET(DEPENDENCIES ${DEPENDENCIES} .The following target properties are set by target_sources(FILE_SET), but they should not generally be manipulated directly: For file sets of type HEADERS: HEADER_SETS.11: Allow setting INTERFACE items .
Use the TARGET clause of the if .Conditional if/else.hpp generated by configure_file command of cmake-3.Target 是CMake 中非常重要的概念，CMake中的大部分操作都是围绕Target 展开的，也许因为它太重要了，CMake 把它包装得特别好，以至于一般的小型项目中，开发人员甚至都不需要考虑Target 的概念就可以完成项目的开发。 对于稍微大一点儿的项目则不同，充分与灵活地使用Target 概念可以为开发过程带来 . Do NOT use the CMAKE_GENERATOR . if(TARGET ${qqShared}) .In CMake semantics there is some sort of distinction between targets and commands that is baffling me. Improve this answer.hpp) # Notify that target A exists. 2015c++ - Check for optionally targets in cmake that are not in the correct . Note: this build is running on linux and uses mingw64 build chain to cross compile dll to run on Windows. and if($ edited Dec 7, 2014 at 6:31. The buildsystem will have a dependency to re-link if the library file changes. #finds lib and adds target lib ${qqShared} set(QQ_LIB_NAME qq .However, if you just need your build to fail if a single file is missing you can use the cmake -E command line mode to compare the file with itself.CMAKE__COMPILER_TARGET ¶.Similarly, CMAKE_SIZEOF_VOID_P gives the pointer size of the system, not the target. An interface library that contains source files will be included as a build target in the generated buildsystem. In this case, if(NOT TARGET JSONUtils::JSONUtils) evaluates to true if . Repeated calls for the same append items in the order called.cpp: Must be compiled with MYLIB_PRIVATE and MYLIB_PUBLIC defined.
Manquant :
target
Programming in CMake · Modern CMake
Working with Targets
My understanding is .The TARGET operator means “is the following argument the name of a CMake target”. 2015Afficher plus de résultatsHow to check existence of the target in a makefilestackoverflow. Targets correspond to a generated file of the same name. If the build is successful, you’ll see a message like this: CMake documentation says: True if the constant is 1, ON, YES, TRUE, Y, or a non-zero number.CMake variable_watch() 명령어: 개요, 사용법, 예제 코드 및 주의 사항 CMake variable_watch() 명령어는 CMake 변수의 변경 사항을 감시하고 알려줍니다.The target is the name of a CMake target (executable, library, or custom) to which you want to add the custom command.Syntax: if () # Code to execute if the condition is true elseif () # Code to execute if the first condition is false and the second is true else () # Code to .Despite that configuiration-generation was successful and target qq was configured - added, had valid target properties, target_link_libraries linked it successfully and had valid file location and type. True if the given name is an existing logical target name such as those created by the .Actually, find_package(Bob) just executes corresponding BobConfig. A target is declared by either add_executable or add_library: thus, in broad terms, a target maps to a build artifact in the project. Typically you only need to do that once for each project ; CMake will automatically detect changes to CMakeLists.Stack Overflow Public questions & answers; Stack Overflow for Teams Where developers & technologists share private knowledge with coworkers; Talent Build your employer brand ; Advertising Reach developers & technologists worldwide; Labs The future of collective knowledge sharing; About the company
if(TARGET target-name) .I have a dynamic header Version.target_compile_options() is a powerful CMake command used to specify compiler flags for specific targets within your project.
