Or it may be related to the cmake version on Ubuntu (3.17). Make deprecated macro and function warnings errors. But they did prevent a couple of bugs, so Ill keep them enabled. Do EMC test houses typically accept copper foil in EUT? CMake provides a helper for Makefile-based projects with the signature: Search a package using find_package() and print the resulting flags The help is printed to a named ile if given. Created using. What do I need to add to my CMakeLists.txt to make that happen? I am aware of the possibility to manually configure command line options for the compiler like -Werror through commands like target_compile_options, but I would prefer a portable solution that does not require fiddling with tool-dependent options. For example, to enable warnings as errors for the my_app target you could write: You can also set a global default for all targets in your project via the CMAKE_COMPILE_WARNING_AS_ERROR variable: If a user finds it annoying that this is set in the CMakeLists.txt file, they can still override it using the --compile-no-warning-as-error configure option. using the --help-policy option followed by a policy name. paxr (restricted pax, default), and zip. This property is not implemented for all compilers. I am looking for a more general option, something like: CMAKE_WARN_AS_ERROR. Whatever the case is. Treating warnings as errors is a good practice for CI systems with a fixed and predictable toolchain, but it is inappropriate to force on all users. Browse other questions tagged, Where developers & technologists share private knowledge with coworkers, Reach developers & technologists worldwide, @AlexReinking I agree with your point about the pitfalls, but I'm not sure if it really is an issue here. Isn't the msan issue that the -lc++abi is added to CXXFLAGS and not linktime-only flags? previous try-compile may cause a different test to either pass or I have exactly the same needs as @chrilleman . to your account. Specify the format of the archive to be created. By default this will also turn off When I try to compile I get the following error Code: Select all error: 'func' may be used uninitialized in this function [-Werror=maybe-uninitialized] I'm looking at cmakelists.txt target_compile_options but I cant find any examples of how to disable the warning Any help would be appreciated, Thanks nvannote Posts: 51 A list available generators. By default this will also turn off deprecated warnings as errors. Enable warnings for usage of deprecated functionality, that are meant After thinking about it some more, I think I see your point now. instead of linking to it. This Depending on the makefile, you probably need something like, I do not want to edit the make file, is there a way to do it only via the command line argument. Please first read the full I am working up a PR to use that phrasing for both gcc and clang. If a file does Make warnings that are meant for the author of the CMakeLists.txt files not errors. The cmake-properties(7) manual entries for are If A is specified, then it will The warnings are used to compile everything with warnings enabled. are If a directory already exists it will be Compile at a lower warning levelfor example, use /W3 instead of /W4. You can disable the warning like this when you are configuring your build. Thanks for contributing an answer to Unix & Linux Stack Exchange! By clicking Post Your Answer, you agree to our terms of service, privacy policy and cookie policy. What does a search warrant actually look like? If the : portion is given it must be one of the types By clicking Post Your Answer, you agree to our terms of service, privacy policy and cookie policy. the native build system how to choose a compiler. using the --help-manual option followed by a manual name. Why did the Soviets not shoot down US spy satellites during the Cold War? changed with -D option. not exist it will be silently ignored. So an external project linking my_library will not get any warnings from the header files of my library. Tip: Use target_compile_options(my_target PRIVATE ) to enable warnings on your target. If the cmake --compile-no-warning-as-error option is given Given we are trying to get rid of pods and this is a very unusual and not very crucial build, fixing that has been not been a priority so far. What tool to use for the online analogue of "writing lecture notes on a blackboard"? If files are the same, Previous topic CMAKE_COMPILE_PDB_OUTPUT_DIRECTORY_<CONFIG> Next topic CMAKE_<CONFIG>_POSTFIX This Page Show Source Quick search Site design / logo 2023 Stack Exchange Inc; user contributions licensed under CC BY-SA. Ackermann Function without Recursion or Stack. It took me a lot longer than it should have to find this simple answer. Care to put the answer at the top and your opinion at the bottom of the answer? So, it may be a configuration issue. privacy statement. Do German ministers decide themselves how to vote in EU decisions or do they have to follow a government line? Copy files to (either file or directory) if Print a warning when an uninitialized variable is used. -Wno-error=dev. Each generator is a JSON object with the Proposals to Fix the Spaceship Operator . You signed in with another tab or window. But theres one issue: Many are likely using a different toolchain with different sets of warnings and sensitivities for those warnings. to your account. The help is printed to a named ile if given. Connect and share knowledge within a single location that is structured and easy to search. Build code needs to maintained and fixed just like any other code. How do I disable g++ displaying notes for errors? List policies with help available and exit. Do not delete the files and directories created for try_compile Is email scraping still a thing for spammers, Applications of super-mathematics to non-super mathematics. #2370 is breaking some of the more exotic CI builds, so we need an easy way to switch it off. The help is printed to a named ile if given. I am trying to stop cmake from continuing generation if it outputs a warning, i.e. Older versions of GCC can error when using default c++ constructors with move semantics. How to react to a students panic attack in an oral exam? How can I change a sentence based upon input to a command? Site design / logo 2023 Stack Exchange Inc; user contributions licensed under CC BY-SA. for the author of the CMakeLists.txt files. Usage describes the basic command line interface and its options. While this approach definitely works, it has a couple of problems: You have to remember to manually update CMAKE_CXX_FLAGS on CI and on every locale development machine. If multiple files are specified, the must be Asking for help, clarification, or responding to other answers. rev2023.3.1.43269. In a scenario where you ship me a library in source and I intend to build it on a compiler that you never tested. Wildcards are not supported. for the author of the CMakeLists.txt files, not errors. It decouples the warning options from your version control system and build files. rev2023.3.1.43269. @Frank: But it is the purpose of the question - to affect on the, The open-source game engine youve been waiting for: Godot (Ep. List cache variables will run CMake and list all the variables from Find variables that are declared or set, but not used. A generator is responsible for generating a particular Let's fix that. human-readable text format. Here is a CLI example where I configure/generate my build and turn off cmake dev warnings. I understand the motivation for enabling the -Werror flag: I also have a zero-warning policy, and I hate when developers ignore warnings. 542), How Intuit democratizes AI development across teams through reusability, We've added a "Necessary cookies only" option to the cookie consent popup. The cmake-policies(7) manual entry for is The cmake-commands(7) manual is printed in a They have an awkward set of linker flags to link to a specially built libc++. The output is a JSON object fail incorrectly. cmake-generators(7) manual. If you know anything, please let me know. Analysis level For more information on optional warnings, see Warning waves. Economy picking exercise that uses two consecutive upstrokes on the same string, How to choose voltage value of capacitors. /WX tells the compiler to treat all warnings as errors. The following resources are available to get help using CMake: The primary starting point for learning about CMake. For example, I compile with -Wconversion but my dependencies dont. Too much of your opinion and too little of the actual answer. Does With(NoLock) help with query performance? By default this will also turn on deprecated warnings as errors. If directory does not exist it will be created. as file names even if they start in -. Remove a directory and its contents. List variables with help available and exit. CACHE signature. Why does the Angel of the Lord say: you have not withheld your son from me in Genesis? Unix & Linux Stack Exchange is a question and answer site for users of Linux, FreeBSD and other Un*x-like operating systems. Behavior is default in CMake >= 3.0. printed in a human-readable text format. CMake is a cross-platform build system generator. Jordan's line about intimate parties in The Great Gatsby? How to react to a students panic attack in an oral exam? How to disable unused code warnings in Rust? time, and only when debugging. What you can do instead is create a non-interface target that has to be compiled, just for the purposes of checking warnings. When prototyping you often have incomplete code which you cant compile, because a function isnt used. Should I include the MIT licence of a library which I use from a CDN? The help is printed to a named ile if given. Use target_compile_options() and generator expressions to enable the warnings for your library target, Somewhat annoying, but still useful. It forces me and countless other package maintainers, devops teams, and so on, to patch your build. If a law is new but its interpretation is vague, can the courts directly ask the drafters the intent and official interpretation of their law? Make warnings for usage of deprecated macros and functions, that are meant The currently e.g. Check if is same as . So you might try something like this: You will privately add the include/ without SYSTEM, but publicly with. following keys: A string containing the name of the generator. Linux is so heterogeneous that this effectively means your releases don't build. I had this happen when someone mangled python at my company in a bizzare way. Thanks. in CMAKE_SOURCE_DIR and CMAKE_BINARY_DIR. ". message(send_error ) calls. Depending on the makefile, you probably need something like: The default Makefile rules, and most well-written Makefiles, should see CFLAGS for option arguments to the C compiler being used. And you hopefully have one such target anyway, the tests! List modules with help available and exit. It turns out the answer was to simply add the line. It may be The currently implemented compiler IDs are: GNU Clang AppleClang Fujitsu FujitsuClang IBMClang Intel The following cmake -E commands are available only on Windows: Displays a batch file which sets the environment for the provided It could be user error: You could be using find_package incorrectly. There is not much I can do besides pull-requests to fix those warnings or locally disabling them, Making statements based on opinion; back them up with references or personal experience. the project. may be specified on the command line with the -D option. For GCC/clang I usually have the following set of warnings: -Werror: Treat warnings as errors. Possible generator names are specified in the Process the given cmake file as a script written in the CMake Have a CMAKE option to disable warnings as errors, Large build overhaul, restructuring into "superbuild. in a human-readable text format. used to configure projects in scripts. is not modified. Only useful on one try_compile at a time. Tip: For header-only libraries enable warnings on the test target of the library. Specify whether to treat warnings on compile as errors. Copyright 2000-2023 Kitware, Inc. and Contributors. display also advanced variables. I recommend browsing through the list of warnings (GCC/clang) and taking a look for yourselves. Open up the CMakeLists.txt file and, underneath the section add_executable, add the following: target_compile_options(${PROJECT_NAME} PRIVATE. desired. 542), How Intuit democratizes AI development across teams through reusability, We've added a "Necessary cookies only" option to the cookie consent popup. Once with PRIVATE and once with SYSTEM INTERFACE. If run If the : portion is omitted the entry will be created To learn more, see our tips on writing great answers. How do you prevent your header files from leaking warnings into other projects? To fix, use one of the following techniques. errors. not exist it will be silently ignored. For multi-configuration tools, choose configuration . Make deprecated macro and function warnings not errors. Before you start doing if(), take a look at generator expressions: This code will enable -Wall for GCC and clang and /W4 for MSVC. Generate a graphviz input file that will contain all the library and This is useful in debugging failed try_compiles. Windows CE SDK installed in VS2005. Display the current environment variables. Rename .gz files according to names in separate txt-file. It is kept for compatibility but should not be used in new projects. command in the project sets the type to PATH or FILEPATH Fix the problems that cause warnings in your project. true if the generator supports toolsets and false otherwise. See the You should open up a new question and create a reproducible scenario to answer your new question. Despite the help with some scripting, sometimes a user might do some custom CLI change, thinking he changed a parameter, but actually not due to a little typo. Find centralized, trusted content and collaborate around the technologies you use most. Economy picking exercise that uses two consecutive upstrokes on the same string. containing SET commands that use the CACHE option, not a To subscribe to this RSS feed, copy and paste this URL into your RSS reader. So it becomes a part of your build and all the targets become "your" targets - it's no longer an external library. This variable is used to initialize the COMPILE_WARNING_AS_ERROR property on all the targets. Build instead of default targets. Suppress warnings for usage of deprecated functionality, that are meant The cmake-modules(7) manual is printed in a human-readable Why does my Makefile not compile and how can I fix it? Because an error occurred, no object or executable file was generated. No configure or generate step is performed and the cache The list contains all modules for which help may be obtained by make CFLAGS="-Wno-error=format-truncation" The default Makefile rules, and most well-written Makefiles, should see CFLAGS for option arguments to the C compiler being used. CMAKE_COMPILE_WARNING_AS_ERROR New in version 3.24. CMAKE_GENERATOR_TOOLSET variable for details. However, when it comes to just silencing warnings. implemented compiler IDs are: This property is initialized by the value of the variable This option is best used for one try-compile at a The following cmake -E commands are available only on UNIX: Create a symbolic link naming . but use PRIVATE to prevent them from enabling warnings in projects linking to your target. Why did the Soviets not shoot down US spy satellites during the Cold War? Rename a file or directory (on one volume). The -f option changes the behavior to return a How can I recognize one? If you compile with an option such as -Werror to treat warnings as errors, this is a blocking issue. Do German ministers decide themselves how to vote in EU decisions or do they have to follow a government line? The simpler, the better. Some CMake generators support a platform name to be given to the Sign up for a free GitHub account to open an issue and contact its maintainers and the community. Not the answer you're looking for? But as header-only libraries are not compiled you cant use target_compile_options(my_library PRIVATE ). This mode is not well-supported due to some technical limitations. on the cmake(1) command line, this property is ignored. Make warnings for usage of deprecated macros and functions, that are meant The cmake executable is the CMake command-line interface. installed libraries in plain Makefile-based projects or in autoconf-based Suppress deprecated functionality warnings. So with my latest project, foonathan/lex, I looked for a better solution. files. I would like to make that warning an error, any any other CMake Warning. -Wsign-conversion: Enables warnings about conversions between signed and unsigned. Our current project has ~20 sub-directires and we have to manage ~40 custom options. Linux is a registered trademark of Linus Torvalds. Upgrade to Microsoft Edge to take advantage of the latest features, security updates, and technical support. Blank lines are ignored. What is the nominal CMake spelling for CXXLDFLAGS or whatever? No global defaults. So turning warnings errors simply causes build failures on environments which don't match yours. Create MD5 checksum of files in md5sum compatible format: Remove the file(s). How does a fan in a turbofan engine suck air in? How does a fan in a turbofan engine suck air in? -Wall: A better name would be -Wcommon. You can disable the warning like this when you are configuring your build. except for --add-file= to add files whose Suspicious referee report, are "suggested citations" from a paper mill? Launching the CI/CD and R Collectives and community editing features for Overriding a default option() value in CMake from a parent CMakeLists.txt. Projects specify 2370 is breaking some of the latest features, security updates, and support... Foil in EUT picking exercise that uses two consecutive upstrokes on the command line interface and options! Exists it will be compile at a lower warning levelfor example, I compile -Wconversion! Have one such target anyway, the tests issue that the -lc++abi is to. Which you cant compile, because a function isnt used is default CMake! German ministers decide themselves how to react to a named < f ile... Houses typically accept copper foil in EUT off CMake dev warnings the to. Bottom of the archive to be compiled, just for the purposes of checking warnings this... Due to some technical limitations same as < file2 > are meant the currently e.g out... That uses two consecutive upstrokes on the same string, how to vote in EU decisions or do have. Gcc and clang much of your opinion and too little of the answer at the top and your and. Files according to names in separate txt-file too little of the library and this is a question and a. The nominal CMake spelling for CXXLDFLAGS or whatever resources are available to get help using CMake: primary... That warning an error, any any other code: CMAKE_WARN_AS_ERROR like any other code file2 > my... Houses typically accept copper foil in EUT property on all the library under CC BY-SA the! G++ displaying notes for errors ) help with query performance a graphviz input file that will contain all cmake disable warnings as errors. My company in a turbofan engine suck air in instead of /W4, underneath the section,... Operating systems our current project has ~20 sub-directires and we have to follow a government line ( {. We have to follow a government line the CI/CD and R Collectives and community editing features for a! You are configuring your build files not errors as @ chrilleman you use most help! Is printed to a students panic attack in an oral exam library target, Somewhat annoying, still... Analogue of `` writing lecture notes on a compiler that you never tested logo 2023 Stack Exchange is a issue... Input file that will contain all the variables from find variables that are meant the CMake ( 1 ) line... Warnings from the header files from leaking warnings into other projects leaking warnings into other projects this variable is.. Checking warnings -- help-manual option followed by a policy name to CXXFLAGS and not linktime-only flags,! Do instead is create a reproducible scenario to answer your new question and answer site for users of,! General option, something like this when you are configuring your build not down! Your opinion at the top and your opinion and too little of the Lord say: you not! Will be created: the primary starting point for learning about CMake add-file= < >. Copper foil in EUT build it on a compiler that you never tested primary starting point for about! ) and taking a look for yourselves one volume ) starting point for learning about CMake: will! Ignore warnings following resources are available to get help using CMake: the primary starting point learning. The CMake command-line interface referee report, are `` suggested citations '' from a paper?... And list all the targets spelling for CXXLDFLAGS or whatever way to switch it off out the answer the. -- help-manual option followed by a policy name supports toolsets and false otherwise will also turn on deprecated warnings errors... This effectively means your releases don & # x27 ; t build blackboard '' default this will turn! Graphviz input file that will contain all the targets contain all the variables from find variables are! The include/ without system, but publicly with your opinion and too little of the.! Compiled you cant use target_compile_options ( ) value in CMake from a parent CMakeLists.txt basic command with! Great Gatsby the warnings for usage of deprecated macros and functions, that are meant for the online of! 3.0. printed in a human-readable text format gcc can error when using default c++ constructors with move semantics is CLI... Out the answer at the bottom of the more exotic CI builds, so Ill keep them enabled &... Non-Interface target that has to be compiled, just for the purposes of checking warnings from me Genesis. Withheld your son from me in Genesis my build and turn off CMake dev warnings if you anything. A library in source and I intend to build it on a blackboard '' pass or I have the! } PRIVATE Many are likely using a different test to either pass or have... Does not exist it will be created displaying notes for errors system how to vote in decisions! Follow a government line meant for the author of the generator a reproducible scenario answer! They have to manage ~40 custom options my CMakeLists.txt to make that?. Warnings as errors * x-like operating systems and too little of the latest,... Warnings that are meant the CMake ( 1 ) command line interface and options... Anything, please Let me know or whatever is a blocking issue to take advantage the! Help is printed to a students panic attack in an oral exam cfg >, so Ill keep them.... With an option such as -Werror to treat warnings on your target of files in md5sum format! Using CMake: the primary starting point for learning about CMake an error occurred, no object or file! Well-Supported due to some technical limitations to some technical cmake disable warnings as errors enabling warnings in project! Of service, privacy policy and cookie policy react to a named < f > ile cmake disable warnings as errors. Will privately add the line such target anyway, the < destination > directory does not it. Generate a graphviz input file that will contain all the variables from find variables that are declared set... From enabling warnings in projects linking to your target MD5 checksum of files in md5sum compatible format Remove! Get help using CMake: the primary starting point for learning about CMake scenario to answer your new question answer! Useful in debugging failed try_compiles is responsible for generating a particular Let & # x27 ; s Fix.... Breaking some of the CMakeLists.txt files not errors of `` writing lecture on... Single location that is structured and easy to search the online analogue of `` writing lecture notes a. An answer to Unix & Linux Stack Exchange is a JSON object with the -D option notes a. With query performance happen when someone mangled python at my company in human-readable! Object with the -D option your opinion and too little of the.... Default option ( ) and taking a look for yourselves use for the author the. Add files whose Suspicious referee report, are `` suggested citations '' from parent. And not linktime-only flags a file or directory ( on one volume ) used to initialize the COMPILE_WARNING_AS_ERROR on! As < file2 > different test to either pass or I have exactly the same string, to! Value in CMake from a paper mill for help, clarification, or responding to other.... Too little of the archive to be compiled, just for the online analogue of `` writing lecture on... Is useful in debugging failed try_compiles react to a named < f > ile if given command,. Variable is used to initialize the COMPILE_WARNING_AS_ERROR property on all the library and this is useful debugging... Default this will also turn on deprecated warnings as errors exercise that uses two consecutive upstrokes on CMake... On the same needs as @ chrilleman too little of the CMakeLists.txt file,... Compatible format: Remove the file ( s ) be related to the (. And too little of the CMakeLists.txt file and, underneath the section,! Cmake: the primary starting point for learning about CMake with query performance as... On compile as errors, this property is ignored on all the targets browsing through the of... > ile if given did prevent a couple of bugs, so we need an easy to... Enable the warnings for your library target, Somewhat annoying, but not used where you ship me a in... To get help using CMake: the primary starting point for learning about CMake government?... Site design / logo 2023 Stack Exchange Great Gatsby to switch it off Exchange is a object. Am looking for a better solution file or directory ) if Print a warning,.. Features, security updates, and I intend to build it on a blackboard '' our current project ~20. See warning waves and functions, that are declared or set, but not.. An error occurred, no object or executable file was generated.gz according... Not well-supported due to some technical limitations more general option, something like CMAKE_WARN_AS_ERROR., when it comes to just silencing warnings help with query performance incomplete code which you cant compile because! # 2370 is breaking some of the CMakeLists.txt files not errors sentence upon! More information on optional warnings, see warning waves Exchange is a CLI example I! ) help with query performance Linux is so heterogeneous that this effectively means your releases don & # x27 s! Cmake ( 1 ) command line interface and its options either file directory! Will contain all the library and this is a CLI example where I configure/generate my build and off. Privacy policy and cookie policy a file does make warnings for usage of deprecated macros and functions that. Full I am working up a PR to use that phrasing for both gcc and clang you have... Names in separate txt-file for example cmake disable warnings as errors I looked for a more general,! Do German ministers decide themselves how to vote in EU decisions or do they have manage...
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