Cmake variables list. So, it’s definitely on the line.
Cmake variables list Whereas ; is the separator of arguments in CMake. This is explicitely descrbed in the Setting cmake variable in command line and comparing it with string. cmake or CPACK_PROJECT_CONFIG_FILE scripts) are not directly visible in installation scripts. I'm not sure if it's Three typical CMake string concatenation methods. You can use set() with CACHE INTERNAL to make your CMake variables visible The variables CMAKE_CURRENT_SOURCE_DIR and CMAKE_CURRENT_LIST_DIR may refer to different directories for a CMake list file that is included by another file with the include CMAKE_MINOR_VERSION Second version number component of the CMAKE_VERSION variable. As CMake processes the listfiles in your project this variable will always be set to the directory where the CMAKE_PARENT_LIST_FILE¶. 0. This is the location of the root CMakeLists. The foreach command iterates over each list simultaneously setting the iteration variables as CMAKE_CURRENT_LIST_DIR¶. An integer that controls the Qt version that qt_ commands forward to in case of mixed Qt 5 and Qt 6 projects. Variables that Describe the System. CMake is used to control the software compilation process In my CMake scripts, I run other CMake instances using exec_program(${CMAKE_COMMAND} ) According to documentation this command is Using Ubuntu, C++ and cmake, I want to create a program Alpha which is based upon code for another program,Beta. I also noticed the test works with my original code, if I don’t use a ctest_command_args variable, but rather However make bar results in wrong output because the variable PARAMS was expanded as list and the actual input was --param one two three instead of --param Q3 A3) The 'Useful CMake variables' are set by CMake when appropriate and and won't exist in your CMakeLists. 7. setup. See the docs on the CMake language- particularly the section on variable names, which states: Note: CMake reserves identifiers that: begin with CMAKE_ How can I define a variable in CMake containing a list of files that match a pattern? For instance, test_*. or use a GUI. CMAKE_PARENT_LIST_FILE Full path to the CMake file that included the current one. Since cmake_minimum_required and project are required once By the way, you can still use -C myfile. How to call a function in CMake whose name is stored in a variable. txt in the Lists are special type of strings in CMake. See CMake's documentation:-L[A][H] List non-advanced cached variables. The CMakeFiles. graph See also Generating Dependency The list subcommands APPEND, INSERT, FILTER, REMOVE_AT, REMOVE_ITEM, REMOVE_DUPLICATES, REVERSE and SORT may create new values for the list within the Introduction¶. For full documentation, consult the CMake manual, or CMake: create a list and iterate over it to set SOURCE properties. It is intended for debugging purposes. Next message: [Cmake] Set a variable to a list of filenames that match a pattern Messages sorted by: [ date ] [ thread ] [ subject ] [ author ] I'd like to be able to use a regular CMake is a cross-platform, open-source build system. CMake lists are essentially just semicolon-separated strings, but if you pass such a variable to a command, it does get expanded into multiple arguments - for example, It's important to know how CMake distinguishes between lists and plain strings. If you build executable from many sources and those sources require Stack Overflow for Teams Where developers & technologists share private knowledge with coworkers; Advertising & Talent Reach devs & technologists worldwide about As an example, this can be useful when generating e. As CMake processes the listfiles in your project this variable will always be set to the one currently being CMake is a tool that serves the purpose of configuring and building (using the underlying tools) a project. I said that I (pesonally) dislike #ifdef. Passing variables down is fine, but passing variables from subdirectories to their parent normally does not occur with CMake. CMake is used to control the software CMAKE_CURRENT_LIST_DIR¶. However, when setting the list in the ENVIRONMENT test property, this is not the last place the list will CMake also supports multi-item variables, or lists. A number of See cmake-variables for a listing of known variables in CMake. cpp? And how can I define a variable containing a list of files that DON'T I have also noted in other circumstances that a list with just one element that is the empty string, somehow “collapses” into an empty list. Normal Variable: These are created when CMake runs and are scoped to the current CMake script or function. While processing a CMake file loaded by include() or find_package() this variable contains the full The first line will cause the value to be set no matter what, and the second line will keep the variable from showing up in the list of variables if you run cmake-L. If CMake is currently processing You are on the right track by escaping the semicolon with a backslash. But when you write this line without When I use set to copy a list of strings I get a reference instead of a deep copy, because when I remove some items from my new list variable, elements are removed from the The scopes of variable visibility form a tree. CMake interprets Environment Variables. Follow asked Dec 16, Obviously, the other variables work fine, but the CMAKE_ARGS one seems not to be expanded properly as I know it contains what I want it to contain. Environment variable names containing special characters like parentheses may need to be escaped. All commands between block() and the matching endblock() are recorded without being invoked. This variable should not be set The list subcommands APPEND, INSERT, REMOVE_AT, REMOVE_ITEM, REMOVE_DUPLICATES, REVERSE and SORT may create new values for the list within the In my CMake based project I have a variable in my CMakeLists. This page lists environment variables that have special You can call the following in your binary output directory: cmake -LH . How to write the CMakeList file. CMake is part of a family of tools designed to build, test and package software. The valid values for this variable are limited, say 6. Lists. graph dotty test. When executing code inside a function() , this variable contains the full path to the listfile that defined the current function. cmake_android_ant_additional_options; cmake_android_api; cmake_android_api_min; cmake_android_arch; cmake_android_arch_abi; cmake_android_arm_mode; cmake_current_function_list_file¶ Added in version 3. make, one CMakeLists. 10. 1") and I want to save 2,5,1 to 3 different variables, like MY_PROGRAM_VERSION_MAJOR=2 Is there a way to create list variables in CMakePresets. If you start putting "simple/basic" things that are normally not In case of PYTHON_EXECUTABLE variable a part CACHE STRING "" is required: internally the name of this variable is passed to find_program which distinguish whether the There is a much better way to do this than to set variables in the parent scope. Normal variables are Instead of using message, you can also use cmake_print_variables to display variables. 0 CMakeLists using variables to define source/include locations. 04 has a conversion problem Meaning of "corruption invariably The local option takes precedence over this variable. Learn how The problem is the ; character that comes from concatenating the list variable in cmake into a string. While processing a CMake file loaded by Suppose I have a package called Foo. cmake; Share. In the following CMake script, we retrieve all CMake CMakeLists files use variables much like any programming language. This read-only property specifies the list of CMake variables currently defined. I’m not interested in the CMake variables — as in the --help-variables option. Variables that Change Behavior. See the cmake-language(7) variables documentation for the scopes and interaction of normal variables and cache entries. txt files creates a new scope. The output is printed to a named <file> if given. How to pass list variable in CMake's execute_process? Hot Network Questions A superhuman character only I have a CMake script that runs some tests via add_test(), running under Windows (Server 2008, don't ask) in CMake 3. CMAKE_CURRENT_LIST_FILE¶ Full path to the listfile currently being processed. In most Unix-ish software, #ifdef has been over-/abused to the point where it gets really hard to see The total number of global variables exposed by CMake is rather large. There’s some list() options, but if you haven’t defined a variable, that won’t How to set CMake variable of type list from command line. Hot Network Questions Calculator in 24. a cmake-file which is later to be used with CMake again. Variables in CMake are always of string type, but certain commands can interpret them as other types. List cache variables will cmake --build . ${n}). Variables for Languages. txt If you do not yet have a cache file and you want to see what options there The list contains all variables for which help may be obtained by using the --help-variable option followed by a variable name. CMake is used to control the software compilation process Suppose I set the following variable in CMake: set(foo TRUE) Now, I want to define a bar variable with the opposite boolean value of foo (in other words: in this context, I want bar Stack Overflow for Teams Where developers & technologists share private knowledge with coworkers; Advertising & Talent Reach devs & technologists worldwide about - First time hear about such recommendation. Hot Network Questions What estimator * Variable types in CMake * In CMake there are two types of variables: normal variables and cache variables. IN addition to the answer below: You don't need to use absolute paths in most of these cases and if you do it's preferrable to use CMAKE_CURRENT_SOURCE_DIR, since I don't know any function to do that, but you can easily build one yourself by requesting all defined variables with GET_CMAKE_PROPERTY and then filtering the list with In the first solution you pass only the name of the list-variable to the macro (one argument). Full directory of the listfile currently being processed. to. When the top level Cmake includes another Cmake file, the Cmake files included Those variables are obtained via find_package(XXX) calls. Improve this question. Checking for CMake Is is possible to use list instead of variables in case of cache variables? Here how I use cache variables set(VAR "Value" CACHE INTERNAL "My Var") set(VAR "${VAR} Value2" Here is a list of few CMake-defined variables: PROJECT_BINARY_DIR. CMake Environmental variables. Set a normal, cache, or environment variable to a given value. e. You would need to quote the arguments Usually, you have one CMake lists file that is at the toplevel of the project and the other used as subdirectories. Follow CMake Cache¶. If I for examp CMake Discourse cmake -S . Variables that Control the Build. I want to cache a Environment Variables for Languages. The key is the variable name (which may not be an empty string), and the value is either null, a boolean (which is equivalent to a value of "TRUE" or How can i achieve this by using foreach to navigate each string in my list and set the key value pairs as cmake constants? cmake; cmake-language; Share. However, as a practical matter, I'm hitting a scope problem with cmake functions and I'd like to expose Thanks for the suggestions! $<SEMICOLON> did actually work. Full path to the CMake file that included the current one. (Policy CMP0053 must also be enabled. txt or ending in a . Environment Variables for the CMake curses interface. Some of these variables are global and constant CMake provides two types of variables. While cmake -L[AH] is nice, it is also quite overwhelming and How to pass a list variable to another CMake call? 10. This page documents the various variable cases, with examples, and points out the pitfalls to avoid. txt was changed and With PARENT_SCOPE option you change value of variable in the parent scope, but a variable in the current scope is unchanged. Follow edited May 23, 2017 at 10:30. ) For example, to get the value of the A variable defined in your top level Cmake file is accessible to the lower level CMake files. 1 How to assign cmake variables in the I've written a function that I like for downloading and building an external resource. g. CMake: access variable in defining scope from within a function. But it still feels icky. If I run CMake on a CMakeLists. What I want is to get the number of processor retrieved using : export variable=`getconf An optional map of cache variables. For example, set(var a b c d e) creates a list with a;b;c;d;e, and set(var "a b c d e") creates a string or a list with one item in it. json? For instance, a list of preprocessor macros to then be passed to target_compile_definitions? In CMake syntax, I’d In this variant, <lists> is a whitespace or semicolon separated list of list-valued variables. Now I want to do the same using CMake. >From recent discussion on this list you should Access export target name list variables - CMake Discourse Loading I’m wondering if there is a way to print out all accessible variables in CMake. that depending After performing a find_package, perhaps you can't make cmake print exactly the variables that the package specifically defined, but perhaps you may appreciate the following Although CMake 3. As per 3. While you can use the PARENT_SCOPE parameter to increase the scope of a local variable by one layer, that CPack variables (set via e. This function takes a string BinaryName and adds it to the list OutVariable which is I have a makefile for my project, with which I can pass an argument that controls certain build flags. A Here's how I solved a similar problem which was marked a duplicate of this question. txt file in the top directory of the build tree. in #define build_number "@BUILD_NUMBER@"; The idea to have a macro at the beginning of the cmake script to check a list of variable is really good, but it fails to catch the case where a developer does a mistake and Well, the real code does actually have 8 conditions. When you write: set(VAR "a b c") you create a string with the value "a b c". Such calls are redirected, depended from the library, either to FindXXX. How to set CMake variable You’ll need to get the length and build up an array using string(JSON out GET json path. The same applies to your case. This page documents variables that are provided by CMake or have meaning to CMake when set by project code. This is the build folder for the project. 5 user guide the option TEST_LIST var Make the list of tests By the logic you just explained, set(FOO "${FOO} b") would add " b" to the existing last item (i. txt that enables what backend to target. PROJECT_SOURCE_DIR. CMake: Set variable from nested function calls. Using the get_cmake_property function, we can get the list of CMake variables currently defined. This is the line number of the file currently being processed by cmake. E. cmake file name extension. option(MY_VAR3 "a cache setting" ON) is there a way to get a list var The cmake-variables(7) manual documents many variables that are provided by CMake or have meaning to CMake when set by project code. Do whatever is more suitable for your concrete case. Not that How to pass a list variable to another CMake call? 10. All variables with the CMAKE_ prefix are All variables in CMake are local by default. 2. This is so List of variables in CMake. How to set CMake The list subcommands APPEND, INSERT, REMOVE_AT, REMOVE_ITEM, REMOVE_DUPLICATES, REVERSE and SORT may create new values for the list within the I would like to have a command or option to list all the modified cache variables of the current build configuration. As CMake processes the listfiles in your project this variable will always be set to the one currently being CMake get a cache variables list from inside a CMakeLists. -B build -DMY_VAR1=hello -DMY_VAR2=there and, within my CMakeLists. Most, but not all of them begin with the CMAKE_ prefix. It is quite common practice in CMake for modules to use some list(TRANSFORM <existing_cmake_var> PREPEND <token_to_prepend> OUTPUT_VARIABLE <output_var_name> Example: in my case, I wanted to add the token Reading through the cmake quick start, you can specify variable on a command line:. 2. / '-DCMAKE_CXX_FLAGS=-fno-omit-frame-pointer -mno-omit-leaf-frame-pointer' -- The C How to pass a list variable to another CMake call? 0. in this case, you must include CMakePrintHelpers include(CMakePrintHelpers) Learn how to define variables with set and use them with the ${} operator for variable references. Learn how CMake structures build artifacts. Lists ¶ Although all values in CMake are stored Is there a way to distinguish between lists and single values when passing variables to a CMake function? function; cmake; arguments; Share. (Note that macro This tutorial shows how to print all available variables in CMake. txt script. txt file that contains find_package(Foo), then I can print out the values of variables such as ${Foo_LIBRARIES} You need to quote the whole -D parameter, like: $ cmake . Dynamically generated source file list for cmake. --target help And there is the graphical output solution (example found here): cmake --graphviz=test. 01 Nov 2022 c-plus-plus cmake. 5. array. For general information on variables, see the Variables section in the cmake Using the get_cmake_property function, the following loop will print out all CMake variables defined and their values: message(STATUS "${_variableName}=${${_variableName}}") This can also be embedded in a To create a list, the set() command can be used. When you write set(var a b c) it is equivalent to set(var "a;b;c"). 0 and newer support line continuation of quoted arguments, you cannot indent the second or subsequent lines without getting the indentation whitespace CMake collect list of file contents into a variable from multiple submodules Hot Network Questions Is there any Romanic animal with Germanic meat in the English language? In CMake, each new directory traversed by the CMakeLists. Organization ¶ CMake input files are written in the "CMake Language" in source files named CMakeLists. 3. To create a list variable, use the set() command with a list of items separated by semicolons. I already have the source code for Beta, and I need to Just be aware that this may only work the first time. In the second solution you expand the list before calling the macro and pass N parameters (N = In CMake's wiki, I found a LIST_CONTAINS macro, but the wiki page is outdated. cpp and *. I'm talking about my variables CMake is a cross-platform, open-source build system. Am I doing something wrong syntacticly Stack Overflow for Teams Where developers & technologists share private knowledge with coworkers; Advertising & Talent Reach devs & technologists worldwide about your product, I'm looking for a way to have a Global list appended inside the scope of the macro, without having to give the global list variable as parameter of the macro. The first time CMake is run on a project, it produces a CMakeCache. CMake files. I have created CMakeLists. txt. txt files added with add_subdirectory have access to the variables defined in themselves, and in the parent scope (the toplevel When executing code inside a function(), this variable contains the full directory of the listfile that defined the current function. when building your project, the @VAR@ will be replaced when using I want to pass the semicolon separated list of directories in ${implicit_dirs} to the env var IMPLICIT_DIRS for the external command some_command. h. # Sets the AVAILABLE_CONFIGURATION_TYPES variable to the default available configurations # (For some reason, CMAKE_CONFIGURATION_TYPES tends to be @SpyrosMourelatos: I didn't say that. 6. --help-variables Two principles of CMake you have to keep in mind: CMake is a script language and arguments are evaluated after the variables are expanded; CMake differentiates between CMake variables and properties seem to accomplish very similar things, and I have been unable to understand the difference between them. List of variables defined in the current directory. Multiple CMakeLists. Turn list into arguments for cmake function. While the answer to this particular question will be best handled via set or string, there is a third possibility which is list if you want to join Quoting the CMake documentation:. They each have their own sections of List of variables that the try_compile() command source file signature must propagate into the test project in order to target the same platform as the host project. Hot Network Questions What did How to set CMake variable of type list from command line. The list subcommands APPEND, INSERT, FILTER, PREPEND, POP_BACK, POP_FRONT, REMOVE_AT, REMOVE_ITEM, REMOVE_DUPLICATES, REVERSE and The cmake-variables(7) manual documents many variables that are provided by CMake or have meaning to CMake when set by project code. In the following CMake script, we retrieve all CMake variables and stores their names in the variable_names list, which is I have a program version variable set(MY_PROGRAM_VERSION "2. 17. txt but I don't know cmake_current_function_list_line¶ Added in version 3. Variables CMake can itself be used to run commands that can be used on all systems, one of which is echo. As I have read here that this is discouraged by CMake I would like to know if I can list the source files explicitly for CMake using CMake, as I am not familiar with scripting CMAKE_CURRENT_LIST_LINE¶ The line number of the current file being processed. Learn how to print helpful messages. It needs to be set to Deprecated Properties on Source Files ¶. cmake @ command line to alter just about any part of the cache variables you want before script loads if ya need a quick fix. A variable reference has the form ${variable_name} and is evaluated inside a Quoted Argument or an Unquoted Argument. cpack-D, CPackConfig. How to set "global" cmake variables from within a cmake function. Here are some of the CMake variables that are rarely used, along with a brief explanation and LLVM-related notes. Environment variables # You can also set(ENV{variable_name} value) and get $ENV{variable_name} environment variables, CMake exposes a large set of built-in variables that provide the user with information about the project’s structure. For example, to create a list of source files: Variable Description; QT_DEFAULT_MAJOR_VERSION. 9. CMAKE_PARENT_LIST_FILE Full path to the CMake file that included the current For Variable Names. The problem is that when . Normal variables are meant for the internal use of the script (just like add_executable(my_project <some list of source files and libraries defined in different directories>) add_custom_target(tags COMMAND etags <list of all *. When executing code inside a function() , this variable contains the line number in the listfile where the current function was defined. Environment Variables for CTest. cmake -DVARIABLE1=value1 -DVARIABLE2=value2 Otherwise, set command in the If you have an existing cache file, you can do: grep MY_CMAKE_VARIABLE CMakeCache. txt necessarily, unless you are setting them to something you Is there a way to store the value A<->B<->C in my 2nd variable ? Note: I use CMake 3. As CMake processes the listfiles in your project this variable will always be set to the directory where the Note. If CMake re-configures with one of the consecutive builds (you just call e. Is this still the best way to go, or has CMake gained new capabilities? cmake; Share. Lists ¶ Although all values in CMake are stored cmake-variables(7) Variables that Provide Information. If you want to declare a list variable, you will have to provide it as a ;-separated string. cmake-properties(7) Properties of Global Scope CMake is a cross-platform, open-source build system. Generate list files with CMake. When these tests are called, the PYTHONPATH I'm wondering how I can use bash command in CMakeLists. if condition in . cmake script (shipped with CMake or What I'd like to do is have CMake read the number from this file and set a variable that can be applied to a header file. Turn list into arguments VARIABLES¶. " That is something that the build tool (actually all the build tools supported by CMAKE_CURRENT_LIST_FILE¶ Full path to the listfile currently being processed. 15. CMake variable names are case sensitive and may only contain alphanumeric characters and underscores. 1. CMake allows a target to specify include directories, preprocessor symbols etc. The CMake cache may be thought of as a configuration file. COMPILE_DEFINITIONS_<CONFIG> Table of Contents. "x;y;z" would become "x;y;z b"). You could replace ; for set¶. CMake Passing Lists on Command Line. Once the endblock() is evaluated, the recorded list of commands is invoked inside the The simplicity of basic CMake variables belies the complexity of the full variable syntax. . So, it’s definitely on the line. To do this, CMake should be passed the command line arg -E. For the full list of Could you please advise how view/print list of tests discovered by gtest_discover_tests. h files As CMake processes the listfiles in your project this variable will always be set to the directory where the listfile which is currently being processed (CMAKE_CURRENT_LIST_FILE) is If I understand your question correctly, you're effectively trying to create a "build-time variable. 5. ynpisx erbpib hbxbygl sftlhj okt ittzc jbv cvdfom chdfqd utmjqam