The cmake-commands(7) manual entry for
is While we still have only a single place to list all the options. It forces me and countless other package maintainers, devops teams, and so on, to patch your build. If run Make deprecated macro and function warnings errors. I am working up a PR to use that phrasing for both gcc and clang. Print a trace of all calls made and from where. Making statements based on opinion; back them up with references or personal experience. projects (via share/aclocal/cmake.m4). Per a local spike test with clang++-3.7, changing from -Wall -Werror to -Werror=all is enough to demote the clang-3.7: error: -lc++abi: 'linker' input unused from an error back to a warning. Specify platform name if supported by generator. 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? Connect and share knowledge within a single location that is structured and easy to search. Like --trace, but with variables expanded. -pedantic-errors: This enables strict standard conformance, basically. to your account. Create MD5 checksum of files in md5sum compatible format: Remove the file(s). fail incorrectly. to load cache entries before the first pass through the projects The following language-independent options do not enable specific warnings but control the kinds of diagnostics produced by GCC. I have found the dev and deprecated warning option to do this but ill like this to happen on any warning. Specify whether to treat warnings on compile as errors. but use PRIVATE to prevent them from enabling warnings in projects linking to your target. Site design / logo 2023 Stack Exchange Inc; user contributions licensed under CC BY-SA. If files are the same, Older versions of GCC can error when using default c++ constructors with move semantics. This option may be used to specify a setting that printed in a human-readable text format. Not the answer you're looking for? CMakeLists.txt files. Sometimes you pass an unused variable to cmake and that would output a warning which i like to prevent. Making statements based on opinion; back them up with references or personal experience. The help is printed to a named ile if given. native tool on their platform. human-readable text format. Connect and share knowledge within a single location that is structured and easy to search. What's the difference between a power rail and a signal line? Thanks. 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. It may The list contains all properties for which help may be obtained by Similarly, you can use CXXFLAGS for providing options to the C++ compiler, and LDFLAGS for the linker. But how do you manage the very compiler-specific flags in CMake? Please first read the full I would like to make that warning an error, any any other CMake Warning. You should open up a new question and create a reproducible scenario to answer your new question. The best way to do this, then, is to set the new (as of CMake 3.24) variable CMAKE_COMPILE_WARNING_AS_ERROR set to ON only when you know it is safe to do so. 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. Read file names from the given file, one per line. The text was updated successfully, but these errors were encountered: @jamiesnape Please link to one or two breaks, for our reference. This flag tells CMake to There compilation failed due to warnings, which was annoying. So turning warnings errors simply causes build failures on environments which don't match yours. The help is printed to a named ile if given. projects default values. Created using. Created using. How to increase the number of CPUs in my computer? The CI runs on windows, osx and ubuntu, but the warning only appears on ubuntu. To fix this error, you must eliminate every warning in your project. -Wconversion: Enables warnings about conversions that might change the value like float to int. Thanks for contributing an answer to Stack Overflow! Tip: Use target_compile_options(my_target PRIVATE ) to enable warnings on your target. As final solutions, I think we should do one of two approaches: Create a CMake function called for all our targets. The help is printed to a named ile if given. Making statements based on opinion; back them up with references or personal experience. Many are likely using a different toolchain with different sets of warnings and sensitivities for those warnings. Some CMake generators support a platform name to be given to the may be specified on the command line with the -D option. Judging by the answer you posted, I'm guessing it's either. See the Tip: Use generator expressions to conditionally enable different warnings for different compilers. The immediate problem is solved, and I am highly sceptical that a CMake option (a programmatic way to turn off errors) will be of use. Planned Maintenance scheduled March 2nd, 2023 at 01:00 AM UTC (March 1st, cc1: warnings being treated as errors when compile FreeBSD 8.2 Release. Do German ministers decide themselves how to vote in EU decisions or do they have to follow a government line? If youre a good citizen youve created an interface library target: That way users of the library can just use target_link_libraries() and will get the proper include paths automatically. @jamiesnape Per nightly msan 107 that I launched by hand, it looks like we're back to "normal" now as far as the msan build warnings. Displays a batch file which sets the environment for the provided This is the opposite of PRIVATE which is only used for your target and never for external. 9 comments Contributor on May 23, 2016 configuration: linux configuration: mac label mentioned this issue In gcc and clang, only turn on -Werror for warnings covered by -Wall #2437 jamiesnape closed this as completed on May 26, 2016 Behavior is default in CMake >= 3.0. -Wall: A better name would be -Wcommon. What are examples of software that may be seriously affected by a time jump? It is kept for compatibility but should not be used in new projects. -Wno-dev Here is a CLI example where I configure/generate my build and turn off cmake dev warnings. ". This should also be reflected by the build files. The list contains all variables for which help may be obtained by The help is printed to a named ile if given. The warnings are used to compile everything with warnings enabled. CMakeGraphVizOptions.cmake for more details. Like the one I tried above. additional information such as the cache, log files etc. Unix & Linux Stack Exchange is a question and answer site for users of Linux, FreeBSD and other Un*x-like operating systems. Print a warning when an uninitialized variable is used. The specified manual is printed in a human-readable text format. How can I silence the warning if this is happening inside the cmake find_package code for PerlLibs ? 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. documentation at https://cmake.org before posting questions to calls. are How to react to a students panic attack in an oral exam? in each directory of a source tree with the name CMakeLists.txt. Is lock-free synchronization always superior to synchronization using locks? The following cmake -E commands are available only on UNIX: Create a symbolic link naming . Make warnings that are meant for the author of the CMakeLists.txt files not errors. true if cmake supports server-mode and false otherwise. directories too. The list contains all policies for which help may be obtained by message(send_error ) calls. The MSan builds, in particular. If a directory does previous try-compile may cause a different test to either pass or native build system to choose a compiler or SDK. Sign up for a free GitHub account to open an issue and contact its maintainers and the community. How can I configure CMake to treat compiler warnings as errors during the build? The following resources are available to get help using CMake: The primary starting point for learning about CMake. You either have to remove -Werror or manually disable warnings on the external target somehow. I'm sure there are other projects which also have reasons to have this policy but although I don't have stats I'm pretty sure they are just a minority. names start in -. Remove matching entries from CMake cache. PTIJ Should we be afraid of Artificial Intelligence? Copyright 2000-2023 Kitware, Inc. and Contributors. To fix this error, you must eliminate every warning in your project. The help is printed to a named ile if given. Also it makes it impossible to miss a warning. The help is printed to a named ile if given. using the --help-manual option followed by a manual name. The currently implemented compiler IDs are: GNU Clang AppleClang Fujitsu FujitsuClang IBMClang Intel I am happy to simply suppress with -Wno-dev, Powered by Discourse, best viewed with JavaScript enabled. Isn't the msan issue that the -lc++abi is added to CXXFLAGS and not linktime-only flags? Launching the CI/CD and R Collectives and community editing features for Overriding a default option() value in CMake from a parent CMakeLists.txt. CMake provides a helper for Makefile-based projects with the signature: Search a package using find_package() and print the resulting flags What is CMake equivalent of 'configure --prefix=DIR && make all install '? repeated for as many cache entries as desired. Why was the nose gear of Concorde located so far aft? The option may be repeated for as many cache entries as containing SET commands that use the CACHE option, not a Possible generator names are specified in the Enable deprecated functionality warnings. Do not delete the files and directories created for try_compile I would like cmake to stop immediately if it encounters any internal error. Copy files to (either file or directory). Because an error occurred, no object or executable file was generated. 542), How Intuit democratizes AI development across teams through reusability, We've added a "Necessary cookies only" option to the cookie consent popup. and never used when compiling the target itself. Projects specify Cite a source instead of ad-hom-ing me. as file names even if they start in -. That way external code will not get warnings from header files but your code will. The -f option changes the behavior to return a not exist it will be silently ignored. It turns out the answer was to simply add the line. Guideline: Specify include directories for libraries twice. Enable deprecated functionality warnings. May only be specified once. When and how was it discovered that Jupiter and Saturn are made out of gas? And you hopefully have one such target anyway, the tests! files. Can you just provide answer on how to ignore all warnings instead of giving advices nobody is looking for? Does With(NoLock) help with query performance? rev2023.3.1.43269. When creating a library you specify include directories and link to other libraries. Let's fix that. This option may be used to specify a file from which Similarly, you can use CXXFLAGS for providing options to the C++ compiler, and LDFLAGS for the linker. How to increase the number of CPUs in my computer? and produces tonnes of warnings with MSVC: It only takes a minute to sign up. If the : portion is given it must be one of the types Enable warnings for usage of deprecated functionality, that are meant for the author of . language. It is possible to write your own Conan generator for your own build system which could achieve this goal, although, if you use CMake, it's a pretty major undertaking to write a custom Cmake generator just for this goal. By default this will also turn off Usage describes the basic command line interface and its options. Make deprecated macro and function warnings not errors. The list is member-post-only but one Thanks, @anon45792294 ! What's the difference between a power rail and a signal line? This option is best used for one try-compile at a 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. The help is printed to a named ile if given. this issue happens on my CI. What would happen if an airplane climbed beyond its preset cruise altitude that the pilot set in the pressurization system? I understand the motivation for enabling the -Werror flag: I also have a zero-warning policy, and I hate when developers ignore warnings. deprecation warnings. privacy statement. Wildcards are not supported. This is to prevent erroneous user parameter settings. I have exactly the same needs as @chrilleman . Not the answer you're looking for? The best answers are voted up and rise to the top, Not the answer you're looking for? Specify modification time recorded in tarball entries. Find problems with variable usage in system files. -fsyntax-only time, and only when debugging. By default this will also turn on deprecation warnings. Find variables that are declared or set, but not used. but as a library writer you can prevent the issue for projects with you as a dependency. To get information about an error or warning, you can look up the error code in the Help Index. This mode is not well-supported due to some technical limitations. UNIX is a registered trademark of The Open Group. Proposals to Fix the Spaceship Operator . as in example? If enabled, adds a flag to treat warnings on compile as errors. And it is sometimes useful when developing to have this option, anyway. It is a good practice despite what is written in this answer. -Werror is a compiler flag that causes all compiler warnings to be treated as errors. What you can do instead is create a non-interface target that has to be compiled, just for the purposes of checking warnings. You can disable the warning like this when you are configuring your build. A list available generators. Build target clean first, then build. So with that you have warnings automatically enabled when compiling your library, and will hopefully fix all of them. My cmake script searches for Perl libs, but I get the following warning message: How can I disable this? Run cmake --build with no options for quick help. If necessary, create parent The help is printed to a named ile if given. With target_compile_options() you can also specify compiler flags for your target. mkfifo with all permissions still errors with permissions denied for other user, tp-link Archer T4U make error (kali linux), Cross-compiling Linux kernel fails on bzImage. The cmake-variables(7) manual is printed in a human-readable text format. But theres one issue: Show program name/version banner and exit. 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. I had this happen when someone mangled python at my company in a bizzare way. To learn more, see our tips on writing great answers. Note that it is not covered by -Wconversion in C++ mode (for some reason). Site design / logo 2023 Stack Exchange Inc; user contributions licensed under CC BY-SA. true if the generator supports toolsets and false otherwise. This variable is used to initialize the COMPILE_WARNING_AS_ERROR property on all the targets. If any of the listed files already do not takes priority over the projects default value. Rename a file or directory (on one volume). The cmake executable is the CMake command-line interface. to your account. Economy picking exercise that uses two consecutive upstrokes on the same string. Too much of your opinion and too little of the actual answer. Fix the problems that cause warnings in your project. following options: Project binary directory to be built. It would use target_compile_options to add those flags. paxr (restricted pax, default), and zip. Sadly, this doesnt work. The interface properties are only given to external targets linking to your target, Have a question about this project? Later compilation doesnt touch that file again, so the warnings is not emitted again. Analysis level For more information on optional warnings, see Warning waves. Use target_compile_options() and generator expressions to enable the warnings for your library target, Create or extract a tar or zip archive. Enable warnings that are meant for the author of the CMakeLists.txt Upgrade to Microsoft Edge to take advantage of the latest features, security updates, and technical support. If you know anything, please let me know. So it becomes a part of your build and all the targets become "your" targets - it's no longer an external library. Some CMake generators support a toolset specification to tell 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. success) in such situations instead. For multi-configuration tools, choose configuration . By clicking Accept all cookies, you agree Stack Exchange can store cookies on your device and disclose information in accordance with our Cookie Policy. Displays arguments as text but no new line. Do not actually run configure and generate the native build system how to choose a compiler. The list contains all modules for which help may be obtained by Blank lines are ignored. Options are: Stop interpreting options and treat all remaining arguments How can I change a sentence based upon input to a command? to stdout. Thanks for contributing an answer to Stack Overflow! What is the idiomatic way in CMAKE to add the -fPIC compiler option? Note that this is not equivalent to -Werror -pedantic, because why would it? Share Improve this answer answered Mar 29, 2019 at 16:05 muru How do you prevent your header files from leaking warnings into other projects? Is something's right to be free more important than the best interest for its own species according to deontology? warning treated as error - no object file generated. Why does the Angel of the Lord say: you have not withheld your son from me in Genesis? The cmake-modules(7) manual is printed in a human-readable If you compile with an option such as -Werror to treat warnings as errors, this is a blocking issue. What does a search warrant actually look like? following keys: A string containing the name of the generator. When will the moons and the planet all be on one straight line again? See the This option may be used to remove one or more variables from the The help is printed to a named ile if given. How to increase the number of CPUs in my computer? for the author of the CMakeLists.txt files, errors. The help is printed to a named ile if given. Stack Exchange network consists of 181 Q&A communities including Stack Overflow, the largest, most trusted online community for developers to learn, share their knowledge, and build their careers. This I can't quite tell if the clang linker complaint is part of -Wall or something else. using the --help-policy option followed by a policy name. rev2023.3.1.43269. Tip: For header-only libraries enable warnings on the test target of the library. Creating Xcode project from Cmake contains unwanted compiler flags, cmake cannot find libraries installed with vcpkg, VSCode + cmake + windows 10 -> cmake not in path. Although if you insist on having some authority, here, have a link to, https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=b339ec9c229aaf399296a120d7be0e34fbc355ca, https://devmanual.gentoo.org/ebuild-writing/common-mistakes/index.html, The open-source game engine youve been waiting for: Godot (Ep. treat all warnings as errors and stop. Make warnings for usage of deprecated macros and functions, that are meant 542), How Intuit democratizes AI development across teams through reusability, We've added a "Necessary cookies only" option to the cookie consent popup. platforms. -Werror is the right thing to do when developing, because you want developers to fix the warnings. More info about Internet Explorer and Microsoft Edge. Make warnings that are meant for the author of the CMakeLists.txt files For MSVC I use /WX /W4. For the future readers: this opinion is controversial at best. cmake -S . Normally, unused and uninitialized variables are searched for only How can the mass of an unstable composite particle become complex? -Wno-error=dev. the list. Dump a wide range of information about the current system. That way you will automatically have warnings when compiling your project but other users wont. Check if is same as . Print extra information during the cmake run like stack traces with By clicking Sign up for GitHub, you agree to our terms of service and however change the results of the try-compiles as old junk from a not exist it will be silently ignored. If the cmake --compile-no-warning-as-error option is given Change color of a paragraph containing aligned equations, Ackermann Function without Recursion or Stack. Since the option is set via a target property and those do not propagate to dependent targets, I don't see an issue where my decision to enforce. Jordan's line about intimate parties in The Great Gatsby? specified by the set() command documentation for its Somewhat annoying, but still useful. See the documentation for The help is printed to a named ile if given. silently ignored. Warnings are diagnostic messages that report constructions that are not inherently erroneous but that are risky or suggest there may have been an error. It's better to just fix the actual problem. Process the given cmake file as a script written in the CMake This has been a recommended practice for at least a, Gentoo is just one project. That probably won't work because after you fetch the external projects, you add it witch add_subdirectory () to your build tree. Does With(NoLock) help with query performance? e.g. Make warnings for usage of deprecated macros and functions, that are meant privacy statement. if you do: cmake -DMY_UNUSED_VAR=true it will output Whatever the case is. Start here for a quick overview of the site, Detailed answers to any questions you might have, Discuss the workings and policies of this site. if there is no implementation for the compiler being used. desired. zero exit code (i.e. cmake-generators(7) manual. Has 90% of ice around Antarctica disappeared in less than a decade? printed in a human-readable text format. Site design / logo 2023 Stack Exchange Inc; user contributions licensed under CC BY-SA. errors. Are there conventions to indicate a new item in a list? Thank you! Windows CE SDK installed in VS2008. How to react to a students panic attack in an oral exam? for the author of the CMakeLists.txt files, not errors. changed with -D option. Is sometimes useful when developing to have this option, anyway the cache, log etc! Specify cmake disable warnings as errors directories and link to other libraries our tips on writing great.... Are meant for the purposes of checking warnings this variable is used to compile everything with warnings.! F > ile if given manually disable warnings on compile as errors specified on the test target of listed! Composite particle become complex or personal experience checking warnings code in the help is printed to named! Is same as < file2 > that way you will automatically have warnings automatically enabled when your. Configure cmake to there compilation failed due to warnings, which was annoying )... For its Somewhat annoying, but not used beyond its preset cruise that! React to a named < f > ile if given -- help-policy option by... Configure cmake disable warnings as errors to there compilation failed due to some technical limitations starting point for about! Cmake and that would output a warning when an uninitialized variable is to! # x27 ; t match yours -- compile-no-warning-as-error option is given change of... Instead of giving advices nobody is looking for problems that cause warnings in projects to... Signal line must eliminate every warning in your project we should do one two!, to patch your build will automatically have warnings automatically enabled when compiling your project other. How to react to a students panic attack in an oral exam altitude that the set. Property on all the targets decisions or do they have to Remove -Werror or manually warnings... Useful when developing cmake disable warnings as errors have this option may be seriously affected by a time?. Same needs as @ chrilleman build files about an error or warning, you must eliminate every warning your. ), and zip indicate a new item in a list which annoying! Contains all policies for which help may be used to initialize the COMPILE_WARNING_AS_ERROR property on all the.! System to choose a compiler too much of your opinion and too little the! 'S either errors simply causes build failures on environments which don & # x27 t! Questions to calls can disable the warning if this is not covered -wconversion! Should also be reflected by the set ( ) command documentation for its own species according to?! Right to be free more important than the best interest for its Somewhat annoying, but warning! Keys: a string containing the name of the generator and clang the help is printed to a named f... Generator supports toolsets and false otherwise anything, please let me know just. Impossible to miss a warning which I like to make that warning error... Help with query performance directory does previous try-compile may cause a different test to either pass or native build how... That warning an error synchronization using locks: enables warnings about conversions that might change the like... Same string header files but your code will not get warnings from header files but code... The issue for projects with you as a library writer you can prevent the issue for with. This to happen cmake disable warnings as errors any warning the mass of an unstable composite particle complex. To CXXFLAGS and not linktime-only flags to search file or directory ) the that... Your opinion and too little of the CMakeLists.txt files, not the answer you 're looking for project. Starting point for learning about cmake error, you must eliminate every warning in your project property on the! Compatibility but should not be used to initialize the COMPILE_WARNING_AS_ERROR property on all the.! See our tips on writing great answers, but not used cmake: the primary starting point for about... Anyway, the tests libs, but the warning like this when you are configuring cmake disable warnings as errors build format! There is no implementation for the purposes of checking warnings be built government line simply the. Countless other package maintainers, devops teams, and will hopefully fix all of them I disable this for warnings... A signal line the -fPIC compiler option looking for Linux Stack Exchange Inc user... -- help-policy option followed by a time jump cmake -- build with no for. Error - no object file generated value like float to int code PerlLibs! Me and countless other package maintainers, devops teams, and so on, to patch your build 2023! Available only on unix: create a non-interface target that has to be treated as.! Printed to a named < f > ile if given to get help using cmake: the starting! Best interest for its own species according to deontology, anyway output a warning when uninitialized! Sign up if this is not covered by -wconversion in c++ mode ( for some )... One Thanks, @ anon45792294 a time jump library writer you can also specify compiler flags your... Synchronization using locks 's line about intimate parties in the great Gatsby a registered of. Privacy statement ) manual is printed to a named < f > ile if.... Executable file was generated the top, not errors, one per line me and countless other package,! To be free more important than the best answers are voted up and rise to the top, errors... But the warning if this is not equivalent to -Werror -pedantic, because would! Sentence based upon input to a named < f > ile if given interface and options... Documentation for its Somewhat annoying, but I get the following warning:. Uses two consecutive upstrokes on the test target of the actual problem a setting printed! Run make deprecated macro and function warnings errors simply causes build failures on environments don... Are examples of software that may be used to specify a setting that in... To synchronization using locks may cause a different toolchain with different sets of and. Is create a cmake function called for all our targets top, the... Appears on ubuntu paragraph containing aligned equations, Ackermann function without Recursion or Stack all be one! They have to Remove -Werror or manually disable warnings on the same Older. Power rail and a signal line send_error ) calls have not withheld son! Send_Error ) calls, anyway macros and functions, that are risky or there! Two consecutive upstrokes on the same string windows, osx and ubuntu, but not used test to either or... Ministers decide themselves how to ignore all warnings instead of giving advices nobody is looking for cmake warning for. Functions, that are not inherently erroneous but that are risky cmake disable warnings as errors suggest there may have been error... True if the clang linker complaint is part of -Wall or something else always superior synchronization. ( on one straight line again you as a library you specify directories! May have been an error or warning, you can do instead is create a symbolic link < new naming! Less than a decade used in new projects you either have to Remove -Werror or manually warnings. Superior to synchronization using locks unix is a registered trademark of the library primary. Changes the behavior to return a not exist it will output Whatever the is! Lock-Free synchronization always superior to synchronization using locks there may have been an error occurred no... By Blank lines are ignored generate the native build system to choose compiler! The -f option changes the behavior to return a not exist it will be silently.. From a parent CMakeLists.txt warning an error, you must eliminate every warning in your project other! A wide range of information about the current system more, see our tips on writing answers. Appears on ubuntu manual name where I configure/generate my build and turn off Usage describes the basic line. The cmake find_package code for PerlLibs and function warnings errors -pedantic-errors: this strict! Dev and deprecated warning option to do this but ill like this when you are configuring your build is implementation! Each directory of a source instead of giving advices nobody is looking for it! Me in Genesis this variable is used to specify a setting that printed a. Why would it discovered that Jupiter and Saturn are made out of?... Option followed by a policy name why does the Angel of the Lord:. Create a cmake function called for all our targets NoLock ) help with query?. -F option changes the behavior to return a not exist it will silently. Why does the Angel of the CMakeLists.txt files, not errors program name/version banner and exit with! On windows, osx and ubuntu, but still useful -pedantic-errors: enables! What you can look up the error code in the pressurization system all for! Only how can the mass of an unstable composite particle become complex other package,... About intimate parties in the pressurization cmake disable warnings as errors name to be treated as errors to get help using:! Guessing it 's either Remove the file ( s ) different test to either pass or build... In this answer ( for some reason ) are likely using a different test to pass... References or personal experience other libraries made out of gas for some reason ) account to open an and! No implementation for the purposes of checking warnings which was annoying projects with you as a library writer can. Parent CMakeLists.txt try_compile I would like to make that warning an error or warning, can...
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