cmake disable warnings as errors
How to increase the number of CPUs in my computer? Once with PRIVATE and once with SYSTEM INTERFACE. I have found the dev and deprecated warning option to do this but ill like this to happen on any warning. Asking for help, clarification, or responding to other answers. Site design / logo 2023 Stack Exchange Inc; user contributions licensed under CC BY-SA. in a human-readable text format. If multiple files are specified, the must be Save the file and rebuild the application: make clean all. their build process with platform-independent CMake listfiles included By clicking Accept all cookies, you agree Stack Exchange can store cookies on your device and disclose information in accordance with our Cookie Policy. Not the answer you're looking for? This option is best used for one try-compile at a Adding the include directory again but without SYSTEM doesnt seem to work reliably, Rename .gz files according to names in separate txt-file. My cmake script searches for Perl libs, but I get the following warning message: How can I disable this? Already on GitHub? It is kept for compatibility but should not be used in new projects. files. Connect and share knowledge within a single location that is structured and easy to search. using the --help-variable option followed by a variable name. native tool on their platform. Which basecaller for nanopore is the best to produce event tables with information about the block size/move table? The help is printed to a named ile if given. After thinking about it some more, I think I see your point now. is logged. Ignored. Linux is a registered trademark of Linus Torvalds. Our current project has ~20 sub-directires and we have to manage ~40 custom options. Do not actually run configure and generate Thanks for contributing an answer to Unix & Linux Stack Exchange! 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. Care to put the answer at the top and your opinion at the bottom of the answer? 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. -Wall -Wextra -Wpedantic. ) ". By clicking Accept all cookies, you agree Stack Exchange can store cookies on your device and disclose information in accordance with our Cookie Policy. Do not delete the files and directories created for try_compile 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. The help is printed to a named ile if given. Developers who enable -Werror are making a statement: we care about our code base, and we won't accept warnings here. used to configure projects in scripts. To learn more, see our tips on writing great answers. By default this will also turn off deprecated warnings as errors.-Wdeprecated. The number of distinct words in a sentence, Duress at instant speed in response to Counterspell. Site design / logo 2023 Stack Exchange Inc; user contributions licensed under CC BY-SA. -Wextra: Some more common warnings not enabled by -Wall. This is a nice clean solution, the only issue is that the compiler flags are compiler dependent. executable dependencies in the project. See the documentation for Too much of your opinion and too little of the actual answer. If multiple files are specified, the must be Has 90% of ice around Antarctica disappeared in less than a decade? Find centralized, trusted content and collaborate around the technologies you use most. Create directories. I am looking for a more general option, something like: CMAKE_WARN_AS_ERROR. The cmake executable is the CMake command-line interface. How does a fan in a turbofan engine suck air in? I like this one because it forces me to fix warnings. Do not delete the try_compile build tree. See the (It allows some warnings to remain configured as warnings, instead of errors.) This is the opposite of PRIVATE which is only used for your target and never for external. @Frank: But it is the purpose of the question - to affect on the, The open-source game engine youve been waiting for: Godot (Ep. Users build a project by using CMake to generate a build system for a Looking for a 'cmake clean' command to clear up CMake output, All warnings as errors with the Eclipse Java compiler (3.6.2). As the test target links to the header-only target, it will get the SYSTEM include so you wont actually get any warnings! This is useful in debugging failed try_compiles. Dump a wide range of information about the current system. The reason it didnt work with PUBLIC was because public properties are both PRIVATE and INTERFACE. What is CMake equivalent of 'configure --prefix=DIR && make all install '? I am trying to stop cmake from continuing generation if it outputs a warning, i.e. Build code needs to maintained and fixed just like any other code. To fix this error, you must eliminate every warning in your project. provided at cmake@cmake.org. Create or extract a tar or zip archive. the deprecated error/warning only stops on that type. The list contains all modules for which help may be obtained by Making statements based on opinion; back them up with references or personal experience. then the will be converted to an absolute path. CMake provides builtin command-line tools through the signature: Run cmake -E or cmake -E help for a summary of commands. The cmake-policies(7) manual is printed in a CACHE signature. But they can at least issue a warning if you do such things. If -DCMAKE_CXX_FLAGS="" is annoying, why not move it into the CMakeLists.txt? So turning warnings errors simply causes build failures on environments which don't match yours. fail incorrectly. projects default values. Find centralized, trusted content and collaborate around the technologies you use most. the native build system how to choose a compiler. Please first read the full Have a CMAKE option to disable warnings as errors, Large build overhaul, restructuring into "superbuild. The major version number in integer form. Does With(NoLock) help with query performance? The help is printed to a named ile if given. human-readable text format. To learn more, see our tips on writing great answers. To learn more, see our tips on writing great answers. The best answers are voted up and rise to the top, Not the answer you're looking for? 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. Then there are also no warnings that make it difficult to spot the errors ;), It might be a good idea to tag this question with the specific compiler you're using, since the answer depends on this. is not modified. Not the answer you're looking for? By clicking Sign up for GitHub, you agree to our terms of service and the list. @Karthik, muru gave you the command line: @muru, your comment sounds like the answer here; would you mind providing it as such? There compilation failed due to warnings, which was annoying. So the header files have a couple of instances where the warning is issued, which is annoying. The help is printed to a named ile if given. language. for the author of the CMakeLists.txt files. They have their policy and that's fine. 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. While we still have only a single place to list all the options. By default this will also turn off When will the moons and the planet all be on one straight line again? warning treated as error - no object file generated. The help is printed to a named ile if given. Dont find variables that are declared on the command line, but not @AlexReinking That depends on the project. Of course, there are more warnings not enabled by those ones. Specify whether to treat warnings on compile as errors. then returns 0, if not it returns 1. 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. 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. If the : portion is given it must be one of the types But theres one issue: For MSVC I use /WX /W4. Easiest way to remove 3/16" drive rivets from a lower screen door hinge? CMake is a cross-platform build system generator. The list contains all properties for which help may be obtained by Has Microsoft lowered its Windows 11 eligibility criteria? Asking for help, clarification, or responding to other answers. Older versions of GCC can error when using default c++ constructors with move semantics. How can I silence the warning if this is happening inside the cmake find_package code for PerlLibs ? 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. It would be very helpful if I can set the CMakeLists.txt in some way that it could just stop whenever theres something it doesnt understand. to stdout. Touch a file if it exists but do not create it. What is the idiomatic way in CMAKE to add the -fPIC compiler option? Like the one I tried above. Fix the problems that cause warnings in your project. See the When cmake is first run in an empty build tree, it creates a How to suppress all warnings being treated as errors for format-truncation, The open-source game engine youve been waiting for: Godot (Ep. and produces tonnes of warnings with MSVC: Build instead of default targets. If the : portion is omitted the entry will be created Suppress deprecated functionality warnings. If a If you know anything, please let me know. You have to use INTERFACE instead of PUBLIC. If a file is specified, the version is written into it. Project configuration settings Speaking as someone who regularly uses top-of-tree compiler builds, where warnings break frequently, hard-coded warnings-as-errors is a blight. display help for each variable. For help and discussion about using cmake, a mailing list is using the --help-property option followed by a property name. Guideline: Specify include directories for libraries twice. 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. using the --help-command option followed by a command name. This flag tells CMake to That way you will automatically have warnings when compiling your project but other users wont. You can simply pass it at the command line when you want to toggle it on or off. This time the GCC compiler properly flags the problem with our code. You can go as far back as FOSDEM 2010 when the Gentoo folks literally gave a talk about how to be a good upstream and keeping -Werror out of the defaults was one of their main points. Connect and share knowledge within a single location that is structured and easy to search. -Wno-error=dev. CMAKE_COMPILE_WARNING_AS_ERROR if it is set when a target is In this article, we will add compiler options that will raise warnings in ST's generated files and we will ask CMake to suppress these warnings but only for these files. It only takes a minute to sign up. The specified manual is printed in a human-readable text format. directory and it must exist. This can be used to use cmake instead of pkg-config to find Use target_compile_options() and generator expressions to enable the warnings for your library target, time, and only when debugging. Later compilation doesnt touch that file again, so the warnings is not emitted again. Just registered to this forum for this topic. Before you start doing if(), take a look at generator expressions: This code will enable -Wall for GCC and clang and /W4 for MSVC. The help is printed to a named ile if given. Print a warning when an uninitialized variable is used. platforms. If a directory does @david-german-tri Let's DM about who is going to take on this ticket. Well occasionally send you account related emails. Only useful on one try_compile at a time. Use with care, you can make your CMakeCache.txt non-working. Previously, I simply modified the CMAKE_CXX_FLAGS variable on the command line to set the appropriate warning flags. Why did the Soviets not shoot down US spy satellites during the Cold War? Keys are: The full version string as displayed by cmake --version. Let's fix that. The cmake-commands(7) manual entry for is Previous topic CMAKE_COMPILE_PDB_OUTPUT_DIRECTORY_<CONFIG> Next topic CMAKE_<CONFIG>_POSTFIX This Page Show Source Quick search Sadly, this doesnt work. the project. If a directory already exists it will be Specify platform name if supported by generator. How to disable unused code warnings in Rust? This option may be used to specify a file from which to your account. By default this will also turn on deprecated warnings as errors. Analysis level For more information on optional warnings, see Warning waves. takes priority over the projects default value. printed in a human-readable text format. Blank lines are ignored. errors. How to suppress PAM audit logs for RHEL8? they have changed. 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? Sometimes you pass an unused variable to cmake and that would output a warning which i like to prevent. This variable is used to initialize the COMPILE_WARNING_AS_ERROR property on all the targets. 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 The list contains all commands for which help may be obtained by By clicking Accept all cookies, you agree Stack Exchange can store cookies on your device and disclose information in accordance with our Cookie Policy. How can I configure CMake to treat compiler warnings as errors during the build? privacy statement. The help is printed to a named ile if given. instead of linking to it. What would happen if an airplane climbed beyond its preset cruise altitude that the pilot set in the pressurization system? For example, I compile with -Wconversion but my dependencies dont. I understand the motivation for enabling the -Werror flag: I also have a zero-warning policy, and I hate when developers ignore warnings. If you've liked this blog post, consider donating or otherwise supporting me. Proposals to Fix the Spaceship Operator . Only load the cache. If the cmake --compile-no-warning-as-error option is given How to increase the number of CPUs in my computer? To subscribe to this RSS feed, copy and paste this URL into your RSS reader. Change color of a paragraph containing aligned equations, Ackermann Function without Recursion or Stack. It would be nice to turn this off with a CMake flag. text format. The warnings are used to compile everything with warnings enabled. The CMAKE_CXX_FLAGS is a global variable and will modify the compiler flags for all targets. Warnings are diagnostic messages that report constructions that are not inherently erroneous but that are risky or suggest there may have been an error. The list contains all variables for which help may be obtained by CMakeGraphVizOptions.cmake for more details. Path to where symbolic link will be created has to exist beforehand. Usage describes the basic command line interface and its options. Build target clean first, then build. Options are: Stop interpreting options and treat all remaining arguments The help is printed to a named ile if given. The simpler, the better. exist, the command returns a non-zero exit code, but no message How to increase the number of CPUs in my computer? The help is printed to a named ile if given. Powered by Discourse, best viewed with JavaScript enabled. -Wno-dev Here is a CLI example where I configure/generate my build and turn off cmake dev warnings. true if cmake supports server-mode and false otherwise. Sign in Economy picking exercise that uses two consecutive upstrokes on the same string. #2370 is breaking some of the more exotic CI builds, so we need an easy way to switch it off. @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. Otherwise its a painful guessing game. Cite a source instead of ad-hom-ing me. That way external code will not get warnings from header files but your code will. Find variables that are declared or set, but not used. A Wiki is provided containing answers to frequently asked questions. Rename a file or directory (on one volume). This property is not implemented for all compilers. It forces me and countless other package maintainers, devops teams, and so on, to patch your build. cmake -S . The following cmake -E commands are available only on UNIX: Create a symbolic link naming . This option may also be given as a single argument: CMAKE_GENERATOR_PLATFORM variable for details. CMakeCache.txt file and populates it with customizable settings for Copyright 2000-2023 Kitware, Inc. and Contributors. If directory does not exist it will be created. Enable deprecated functionality warnings. but use PRIVATE to prevent them from enabling warnings in projects linking to your target. Tip: Use target_compile_options(my_target PRIVATE ) to enable warnings on your target. Would the reflected sun's radiation melt ice in LEO? You either have to remove -Werror or manually disable warnings on the external target somehow. 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. How can I recognize one? Make warnings that are meant for the author of the CMakeLists.txt files not errors. The help is printed to a named ile if given. This property is not implemented for all compilers. -B build -Wno-dev anon45792294 January 1, 2021, 7:59pm 3 However, when it comes to just silencing warnings. By clicking Post Your Answer, you agree to our terms of service, privacy policy and cookie policy. The loaded entries take priority over the I am happy to simply suppress with -Wno-dev, Powered by Discourse, best viewed with JavaScript enabled. Note that it is not covered by -Wconversion in C++ mode (for some reason). Specify the format of the archive to be created. Does With(NoLock) help with query performance? The following language-independent options do not enable specific warnings but control the kinds of diagnostics produced by GCC. Some CMake generators support a platform name to be given to the What happened to Aham and its derivatives in Marathi? Wildcards are not supported. To get information about an error or warning, you can look up the error code in the Help Index. The help is printed to a named ile if given. Do German ministers decide themselves how to vote in EU decisions or do they have to follow a government line? List modules with help available and exit. Connect and share knowledge within a single location that is structured and easy to search. deprecation warnings. Display the current environment variables. Use DisabledWarnings to disable certain warnings. 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. however change the results of the try-compiles as old junk from a This has been a recommended practice for at least a, Gentoo is just one project. How to react to a students panic attack in an oral exam? Compile at a lower warning levelfor example, use /W3 instead of /W4. 542), How Intuit democratizes AI development across teams through reusability, We've added a "Necessary cookies only" option to the cookie consent popup. On the other hand, if your build system is in-fact CMake, There is extensive discussion about doing so with CMake here: #1318 Create MD5 checksum of files in md5sum compatible format: Remove the file(s). I'm also not sure what link you want from me, you just need to work in the industry to know that. Windows CE SDK installed in VS2005. You should open up a new question and create a reproducible scenario to answer your new question. Targets linking to it will not get the warnings enabled. Well occasionally send you account related emails. When creating a library you specify include directories and link to other libraries. Don't use /WX to compile. 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. Making statements based on opinion; back them up with references or personal experience. project binary tree: This abstracts a native build tools command-line interface with the So on CI, for example, I invoked CMake with: That way the compiler will always have the warning flags enabled. The option may be I have exactly the same needs as @chrilleman . Specify whether to treat warnings on compile as errors. Add compilers options Suppress warnings that are meant for the author of the using the --help-manual option followed by a manual name. errors. By clicking Post Your Answer, you agree to our terms of service, privacy policy and cookie policy. Is something's right to be free more important than the best interest for its own species according to deontology? This option may be used to specify a setting that In gcc and clang, only turn on -Werror for warnings covered by -Wall, build: cmake: ability to disable -Werror* (-Werror considered harmful). What tool to use for the online analogue of "writing lecture notes on a blackboard"? The list contains all policies for which help may be obtained by Build failures on environments which don & # x27 ; t match.... In c++ mode ( for some reason ) '' drive rivets from a lower screen door?! A non-zero exit code, but no message how to increase the of... Only used for your target and never for external following cmake -E commands are available only on Unix: a! Nolock ) help with query performance moons and the list contains all properties for which help may be by. Help with query performance mode ( for some reason ) build overhaul, restructuring into `` superbuild of paragraph., clarification, or responding to other answers a global variable and will the! Printed to a students panic attack in an oral exam for the author the... Patch your build 'configure -- prefix=DIR & & make all install ' generators a! Connect and share knowledge within a single argument: CMAKE_GENERATOR_PLATFORM variable for details know anything, please let me.. Has to exist beforehand ~40 custom options However, when it comes to just warnings! By a command name when an uninitialized variable is used read the have! Cmake, a mailing list is using the -- help-manual option followed by property! For help and discussion about using cmake, a mailing list is using the help-property! Windows 11 eligibility criteria ( 7 ) manual is printed in a turbofan engine air. The archive to cmake disable warnings as errors free more important than the best answers are voted up and rise the. Compiler properly flags the problem with our code the top, not the answer at the line! An unused variable to cmake and that would output a warning if you do such things given as single... Generation if it outputs a warning which I like to prevent configured as warnings, see tips. Interest for its own species according to deontology easy way to switch it off same string while we still only. Exist it will not get the system include so you wont actually get any warnings properties... Using default c++ constructors with move semantics answer to Unix & Linux Stack!! The compiler flags for all targets Duress at instant speed in response to Counterspell <... That are declared or set, but I get the warnings are diagnostic messages that report that. What happened to Aham and its options pressurization system the header files but your code will a mailing is. But ill like this one because it forces me to fix this error, you can simply pass at... Me to fix warnings this one because it forces me to fix error! Or off this one because it forces me to fix this error, you must every! To be free more important than the best to produce event tables with about... Files have a zero-warning policy, and so on, to patch build.: stop interpreting options and treat all remaining arguments the help is printed to a students attack. Warnings not enabled by those ones analysis level for more information on optional warnings which. Under CC BY-SA off with a cmake flag to set the appropriate warning flags as a location... Prevent them from enabling warnings in your project but other users wont and will modify the compiler flags all. Or set, but no message how to vote in EU decisions or do they have to follow a line... Are meant for the author of the using the -- help-variable option followed by a property name the current.! Turning warnings errors simply causes build failures on environments which don & # x27 ; use. Are meant for the online analogue of `` writing lecture notes on a blackboard '' again, so the files. We still have only a single location that is structured and easy to search I the! Add the -fPIC compiler option COMPILE_WARNING_AS_ERROR property on all the targets easiest way to it. So the header files but your code will not get warnings from header files but your code.... Keys are: the full have a cmake flag sun 's radiation melt ice in?! Change color of a paragraph containing aligned equations, Ackermann Function without Recursion or Stack zero-warning policy, and on!: the full version string as displayed by cmake -- version to list all the targets which... With information about the block size/move table frequently asked questions a government line fix this error, just... Tips on writing great answers constructors with move semantics any warnings just need to work in help... So we need an easy way to switch it off cmake disable warnings as errors cmake option to disable as! The help is printed to a named < f > ile if given Sign up GitHub... By GCC make your CMakeCache.txt non-working new > symbolic link will be converted to an path... Are meant for the author of the answer you 're looking for a more option... And that would output a warning, i.e more important than the best produce! In new projects writing lecture notes on a blackboard '' with references or experience. Generators support a platform name if supported by generator preset cruise altitude that the pilot in... Oral exam the Soviets not shoot down US spy satellites during the Cold War dependencies. > portion is omitted the entry will be created Suppress deprecated functionality.... A summary of commands printed in a sentence, Duress at instant speed in to. Collaborate around the technologies you use most cmake -E commands are available only on:. Have a couple of instances where the warning is issued, which annoying! About who is going to take on this ticket `` writing lecture notes on a blackboard '' find variables are... Help may be I have exactly the same string JavaScript enabled structured and easy to search maintained fixed... By cmake -- version but should not be used in new projects cmake and that would output a which! With our code privacy policy and cookie policy do not enable specific warnings but control kinds. Build -wno-dev anon45792294 January 1, 2021, 7:59pm 3 However, when it comes to silencing... Be created to maintained and fixed just like any other code cruise altitude the! Compilation failed due to warnings, see warning waves treat all remaining arguments the help is printed to a must be Save the file cmake disable warnings as errors populates it with customizable settings for Copyright 2000-2023 Kitware, Inc. Contributors... File from which to your account for Copyright 2000-2023 Kitware, Inc. and Contributors again! Silence the warning if this is happening inside the cmake -- compile-no-warning-as-error option is given to.: I also have a cmake flag the full have a cmake flag policy and!, and so on, to patch your build CACHE signature and your opinion at the command,..., Duress at instant speed in response to Counterspell / logo 2023 Exchange. Clicking Sign up for GitHub, you can make your CMakeCache.txt non-working single place to list all the targets the... -- help-manual option followed by a variable name with -Wconversion but my dependencies dont a global variable and modify! Project but other users wont be I have exactly the same needs as @ chrilleman a scenario. For enabling the -Werror flag: I also have a zero-warning policy, and so on, to patch build... Printed to a named < f > ile if given an unused variable to cmake and that would output warning... Enable specific warnings but control the kinds of diagnostics produced by GCC '' is.... The current system 's DM about who is going to take on this ticket need work. Can I configure cmake to that way you will automatically have warnings when your... Help-Manual option followed by a command name opinion at the bottom of the you. 'Configure -- prefix=DIR & & make all install ' include directories and to! Summary of commands # 2370 is breaking some of the archive to be given to the target... Me know 's right to be free more important than the best answers are voted up and rise the. Cmakecache.Txt non-working the pressurization system warning option to disable warnings as errors, build. By has Microsoft lowered its Windows 11 eligibility criteria that depends on same. Stop interpreting options and treat all remaining arguments the help is printed in a turbofan engine suck air in to. Break frequently, hard-coded warnings-as-errors is a CLI example where I configure/generate my build and turn off deprecated warnings errors.
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cmake disable warnings as errors