By clicking Post Your Answer, you agree to our terms of service, privacy policy and cookie policy. rev2023.3.1.43269. human-readable text format. When including the header files in my source files, I want warnings. Learn more about Stack Overflow the company, and our products. If a CACHE signature. The help is printed to a named ile if given. Not sure where I need to put -Wno-dev. The specified manual is printed in a human-readable text format. 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. While the above method works greater for most libraries, it doesnt work with header-only libraries. To learn more, see our tips on writing great answers. Here is a CLI example where I configure/generate my build and turn off cmake dev warnings. using the --help-command option followed by a command name. Specify modification time recorded in tarball entries. #2370 is breaking some of the more exotic CI builds, so we need an easy way to switch it off. And it is sometimes useful when developing to have this option, anyway. I have exactly the same needs as @chrilleman . Sign up for a free GitHub account to open an issue and contact its maintainers and the community. Use TreatWarningsAsErrors to treat all warnings as errors. @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. to your account. - t.niese Nov 25, 2020 at 20:45 1 It might be a good idea to tag this question with the specific compiler you're using, since the answer depends on this. The help is printed to a named ile if given. is not modified. Developers who enable -Werror are making a statement: we care about our code base, and we won't accept warnings here. to stdout. Speaking as someone who regularly uses top-of-tree compiler builds, where warnings break frequently, hard-coded warnings-as-errors is a blight. -fsyntax-only e.g. This can be configured in CMake version 3.24 and higher via the COMPILE_WARNING_AS_ERROR target property. Read file names from the given file, one per line. Tip: Use generator expressions to conditionally enable different warnings for different compilers. to your account. That way you will automatically have warnings when compiling your project but other users wont. Sometimes you pass an unused variable to cmake and that would output a warning which i like to prevent. Theoretically Correct vs Practical Notation. The help is printed to a named ile if given. printed in a human-readable text format. Did the residents of Aneyoshi survive the 2011 tsunami thanks to the warnings of a stone marker? Ackermann Function without Recursion or Stack. Do EMC test houses typically accept copper foil in EUT? See the documentation for How do you prevent your header files from leaking warnings into other projects? Without that flag a warning is generated when compiling, but you might miss it. So with my latest project, foonathan/lex, I looked for a better solution. is logged. 542), How Intuit democratizes AI development across teams through reusability, We've added a "Necessary cookies only" option to the cookie consent popup. You can disable the warning like this when you are configuring your build. This is a nice clean solution, the only issue is that the compiler flags are compiler dependent. An interface library can only have INTERFACE targets. printed in a human-readable text format. Its better to just fix the actual problem. But as header-only libraries are not compiled you cant use target_compile_options(my_library PRIVATE ). Build instead of default targets. Generate graphviz of dependencies, see CMakeGraphVizOptions.cmake for more. Remove a directory and its contents. 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. Can you just provide answer on how to ignore all warnings instead of giving advices nobody is looking for? Copyright 2000-2023 Kitware, Inc. and Contributors. Making statements based on opinion; back them up with references or personal experience. 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. Run cmake --build with no options for quick help. So an external project linking my_library will not get any warnings from the header files of my library. Change color of a paragraph containing aligned equations, Ackermann Function without Recursion or Stack. specified by the set() command documentation for its printed in a human-readable text format. To subscribe to this RSS feed, copy and paste this URL into your RSS reader. By default this will also turn off @Karthik, muru gave you the command line: @muru, your comment sounds like the answer here; would you mind providing it as such? When prototyping you often have incomplete code which you cant compile, because a function isnt used. How can I configure CMake to treat compiler warnings as errors during the build? zero exit code (i.e. CMakeCache.txt file, globbing expressions using * and ? 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. -Wsign-conversion: Enables warnings about conversions between signed and unsigned. Economy picking exercise that uses two consecutive upstrokes on the same string, How to choose voltage value of capacitors. 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. Thanks, @anon45792294 ! warn about other files as well. This mode is not well-supported due to some technical limitations. Sign in directory and it must exist. 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. By default this will also turn off deprecated warnings as errors. If a file does If necessary, create parent List modules with help available and exit. Older versions of GCC can error when using default c++ constructors with move semantics. then returns 0, if not it returns 1. You either have to remove -Werror or manually disable warnings on the external target somehow. Our current project has ~20 sub-directires and we have to manage ~40 custom options. using the --help-module option followed by a module name. So, it may be a configuration issue. When cmake is first run in an empty build tree, it creates a It only takes a minute to sign up. If files are the same, rev2023.3.1.43269. If variables are defined using -D, this must be The list contains all modules for which help may be obtained by ". Make warnings that are meant for the author of the CMakeLists.txt files I am happy to simply suppress with -Wno-dev, Powered by Discourse, best viewed with JavaScript enabled. Fix the problems that cause warnings in your project. Lets close this post by talking about a list of warnings you should enable. their build process with platform-independent CMake listfiles included I understand the motivation for enabling the -Werror flag: I also have a zero-warning policy, and I hate when developers ignore warnings. from the top of a binary tree for a CMake project it will dump The help is printed to a named ile if given. human-readable text format. See the This is to prevent erroneous user parameter settings. Previous topic CMAKE_COMPILE_PDB_OUTPUT_DIRECTORY_<CONFIG> Next topic CMAKE_<CONFIG>_POSTFIX This Page Show Source Quick search This has happened for more than 3 time for our team. Make warnings for usage of deprecated macros and functions, that are meant This is useful in debugging failed try_compiles. The major version number in integer form. Usage describes the basic command line interface and its options. Notably, this exact issue was the source of one major debacle in the last year in the Linux kernel: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=b339ec9c229aaf399296a120d7be0e34fbc355ca, It is also prohibited by the Gentoo packaging archives (important because it is a source-based distribution): https://devmanual.gentoo.org/ebuild-writing/common-mistakes/index.html. If run Making statements based on opinion; back them up with references or personal experience. Path to where symbolic link will be created has to exist beforehand. More info about Internet Explorer and Microsoft Edge. List commands with help available and exit. When creating a library you specify include directories and link to other libraries. Would the reflected sun's radiation melt ice in LEO? Analysis level For more information on optional warnings, see Warning waves. But they did prevent a couple of bugs, so Ill keep them enabled. CMakeCache.txt file and populates it with customizable settings for By clicking Accept all cookies, you agree Stack Exchange can store cookies on your device and disclose information in accordance with our Cookie Policy. The list contains all policies for which help may be obtained by Wildcards are not supported. the project. By clicking Accept all cookies, you agree Stack Exchange can store cookies on your device and disclose information in accordance with our Cookie Policy. on the cmake(1) command line, this property is ignored. All manuals are printed in a human-readable text format. The help is printed to a named ile if given. They have an awkward set of linker flags to link to a specially built libc++. This variable is used to initialize the COMPILE_WARNING_AS_ERROR property on all the targets. I have found the dev and deprecated warning option to do this but ill like this to happen on any warning. 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 minor version number in integer form. A list available generators. This flag tells CMake to -Wno-dev Here is a CLI example where I configure/generate my build and turn off cmake dev warnings. Already on GitHub? The cmake-variables(7) manual entry for is The CI runs on windows, osx and ubuntu, but the warning only appears on ubuntu. Similarly, you can use CXXFLAGS for providing options to the C++ compiler, and LDFLAGS for the linker. Remove matching entries from CMake cache. As final solutions, I think we should do one of two approaches: Create a CMake function called for all our targets. For example, I compile with -Wconversion but my dependencies dont. If a directory already exists it will be Older versions of GCC can error when using default c++ constructors with move semantics. If you've liked this blog post, consider donating or otherwise supporting me. as file names even if they start in -. using the --help-property option followed by a property name. If multiple files are specified, the must be Thank you! For multi-configuration tools, choose configuration . Rename .gz files according to names in separate txt-file. If A is specified, then it will Not the answer you're looking for? installed libraries in plain Makefile-based projects or in autoconf-based Only useful on one try_compile at a time. 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 on deprecated warnings as errors. @ixSci - flagged for CoC. instead of linking to it. Combine INTERFACE include directories with SYSTEM to prevent warnings showing up there and use PRIVATE include directories without SYSTEM for compiling your own project. Or it may be related to the cmake version on Ubuntu (3.17). is there a chinese version of ex. The help is printed to a named ile if given. project binary tree: This abstracts a native build tools command-line interface with the I'd like to thus propose closing this issue. To fix this error, you must eliminate every warning in your project. Different compilers produce different warnings --- there's no standard. What happened to Aham and its derivatives in Marathi? Hiding all warnings sounds like a not so good idea, or rather treat warnings as errors. in each directory of a source tree with the name CMakeLists.txt. This option may be used to specify a file from which There are cases when it should be a user preference but that's it: some cases. Jordan's line about intimate parties in The Great Gatsby? Site design / logo 2023 Stack Exchange Inc; user contributions licensed under CC BY-SA. Are there conventions to indicate a new item in a list? Similarly, you can use CXXFLAGS for providing options to the C++ compiler, and LDFLAGS for the linker. Warnings are important, especially in C++. Build code needs to maintained and fixed just like any other code. This enables warning level four, which is a lot but not too much, and treats them as errors. printed in a human-readable text format. CMake provides a command-line signature to build an already-generated Copy directories to directory. Use DisabledWarnings to disable certain warnings. So turning warnings errors simply causes build failures on environments which don't match yours. used. I am trying to do something extremely simple: I have to work on a C++ project that raises a lot of compilation warnings. Should I include the MIT licence of a library which I use from a CDN? Looking for a 'cmake clean' command to clear up CMake output, Image Processing: Algorithm Improvement for 'Coca-Cola Can' Recognition, Replacing a 32-bit loop counter with 64-bit introduces crazy performance deviations with _mm_popcnt_u64 on Intel CPUs, Copy file from source directory to binary directory using CMake. 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 If you compile with an option such as -Werror to treat warnings as errors, this is a blocking issue. The help is printed to a named ile if given. @Frank: But it is the purpose of the question - to affect on the, The open-source game engine youve been waiting for: Godot (Ep. The help is printed to a named ile if given. Specify whether to treat warnings on compile as errors. Warnings in your project but other users wont for usage of deprecated and... Run in an empty build tree, it doesnt work with header-only libraries not! Try_Compile at a time I cmake disable warnings as errors trying to do this but Ill like this happen... A nice clean solution, the only issue is that the compiler flags are compiler dependent our products variable used. Post, consider donating or otherwise supporting me, hard-coded warnings-as-errors is a CLI example I... In cmake version 3.24 and higher via the COMPILE_WARNING_AS_ERROR target property created has to exist beforehand ( 1 ) documentation... Only issue is that the compiler flags are compiler dependent build tools command-line interface with the I 'd to. Is breaking some of the more exotic CI builds, so we need easy... Are meant this is useful in debugging failed try_compiles so Ill cmake disable warnings as errors them enabled directory. Built libc++ on opinion ; back them up with references or personal experience in autoconf-based only useful on try_compile! My latest project, foonathan/lex, I compile with -Wconversion but my dependencies dont source files, I compile -Wconversion... C++ project that raises a lot of compilation warnings don & # x27 ; t match yours item in human-readable... I have found the dev and deprecated warning option to do this but like... Works greater for most libraries, it doesnt work with header-only libraries are not supported final solutions I., create parent list modules with help available and exit as header-only libraries it doesnt work header-only... External project linking my_library will not the answer you 're looking for looking?... Of the more exotic CI builds, where warnings break frequently, hard-coded warnings-as-errors is a nice solution! I configure cmake to -Wno-dev here is a CLI example where I configure/generate my and! 2370 is breaking some of the more exotic CI builds, where warnings break frequently hard-coded. Tools command-line interface with the name CMakeLists.txt cmake disable warnings as errors ~20 sub-directires and we have work... Or otherwise supporting me property is ignored a CLI example where I my... Who regularly uses top-of-tree compiler builds, where warnings break frequently, hard-coded warnings-as-errors is a lot but too! Rather treat warnings as errors hard-coded warnings-as-errors is a blight Thank you cmake function called all!, you agree to our terms of service, privacy policy and cookie.! Rss feed, copy and paste this URL into your RSS reader a stone marker to initialize the COMPILE_WARNING_AS_ERROR property! Choose configuration < cfg > from the given file, one per line for different compilers to ~40! Abstracts a native build tools command-line interface with the I 'd like to prevent erroneous user parameter settings indicate new. Causes build failures on environments which don & # x27 ; t match yours / logo Stack! 'S radiation melt ice in LEO as @ chrilleman cmake disable warnings as errors use PRIVATE include directories with SYSTEM to prevent warnings up. Them enabled build code needs to maintained and fixed just like any other.... Learn more, see CMakeGraphVizOptions.cmake for more if not it returns 1 binary tree: this abstracts native... Each directory of a library which I like to thus propose closing this issue to have option. Is generated when compiling, but you might miss it compiler, treats! A not so good idea, or rather treat warnings on compile as errors isnt used but Ill this... Do this but Ill like this to happen on any warning with SYSTEM to prevent at a time picking that! Prevent warnings showing up there and use PRIVATE include directories with SYSTEM prevent... A cmake function called for all our targets string, How to ignore all warnings of... It doesnt work with header-only libraries to this RSS feed, copy and paste this URL into RSS. Someone who regularly uses top-of-tree compiler builds, where warnings break frequently hard-coded... Sounds like a not so good idea, or rather treat warnings as errors would the sun. They have an awkward set of linker flags to link to other libraries one of two approaches: create cmake! And paste this URL into your RSS reader there & # x27 ; t match yours and exit there to... A module name cmake function called for all our targets erroneous user parameter settings target_compile_options ( my_library )... Binary tree: this abstracts a native build tools command-line interface with the 'd! In separate txt-file to work on a C++ project that raises a lot of warnings. Service, privacy policy and cookie policy even if they start in - on deprecated warnings as during... User contributions licensed under CC BY-SA related to the warnings of a containing. Is used to initialize the COMPILE_WARNING_AS_ERROR target property lot but not too much, LDFLAGS. Change color of a source tree with the I 'd like to propose... Not supported source files, I think we should do one of two approaches create... Is ignored file does if necessary, create parent list modules with help and! Leaking warnings into other projects PRIVATE ) as @ chrilleman printed in a human-readable text format thus propose closing issue. Disable the warning like this to happen on any warning can error when default! Do you prevent your header files from leaking warnings into other projects of survive... The cmake version 3.24 and higher via the COMPILE_WARNING_AS_ERROR target property in LEO ; t yours! For the linker line, this must be the list contains all policies for which help may be obtained ``! Needs to maintained and fixed just like any other code our tips on writing great answers you should.... > ile if given an already-generated copy directories to < destination > directory cmake ( 1 ) command documentation its... Great Gatsby this to happen on any warning build tools command-line interface the... Errors simply causes build failures on environments which don & # x27 t... Contact its maintainers and the community if variables are defined using -D, this property is ignored just like other... And link to other libraries needs as @ chrilleman melt ice in LEO > be... Library you specify include directories and link to a named < f > if... On opinion ; back them up with references or personal experience under CC BY-SA version and... Defined using -D, this must be Thank you this must be Thank you not! Incomplete code which you cant compile, because a function isnt used to and! Include the MIT licence of a stone marker we need an easy way to switch it off necessary... Property name close this post by talking about a list of warnings should! Files are specified, then it will be older versions of GCC can error when using default C++ constructors move! They did prevent a couple of bugs, so we need an easy way to it... Answer you 're looking for in each directory of a source tree with the name CMakeLists.txt to thus propose this. Conditionally enable different warnings -- - there & # x27 ; s no standard we have to work on C++. Fix this error, you can use CXXFLAGS for providing options to the warnings of a source tree with I. Private include directories without SYSTEM for compiling your own project tree: cmake disable warnings as errors abstracts native... Cmake ( 1 ) command documentation for How do you prevent your header files of my library them! Each directory of a stone marker < f > ile if given build code needs to maintained fixed. And that would output a warning is generated when compiling, but you might miss.. What happened to Aham and its derivatives in Marathi Stack Exchange Inc user... Project but other users wont > directory in a list other libraries multiple files are specified the... System for compiling your project flags are compiler dependent files are specified, then it will be created has exist... My dependencies dont called for all our targets looking for using the -- help-property option followed a! Configure/Generate my build and turn off cmake dev warnings so good idea or... Them up with references or personal experience contact its maintainers and the community and. It off propose closing this issue include the MIT licence of a stone?... Choose configuration < cfg > library you specify include directories and link to a named < f > if! Solution, the only issue is that the compiler flags are compiler dependent disable warnings compile. The warning like this to happen on any warning too much, and for! This Enables warning level four, which is a blight the dev and deprecated warning option do. String, How to choose voltage value of capacitors like this to happen on any warning first run in empty! An external project linking my_library will not get any warnings from the file. An empty build tree, it creates a it only takes a minute to sign up link. Lot of compilation warnings couple of bugs, so Ill keep them enabled I 'd like to propose. Treats them as errors compile as errors libraries in plain Makefile-based projects or autoconf-based! Rss feed, copy and paste this URL into your RSS reader Ackermann function without Recursion or Stack BY-SA. Solution, the only issue is that the compiler flags are compiler dependent to other libraries to cmake disable warnings as errors. ( my_library PRIVATE ) of dependencies, see warning waves creating a which. So Ill keep them enabled cause warnings in your project this but Ill like this to happen on any.! Off deprecated warnings as errors Inc ; user contributions licensed under CC BY-SA How can I configure cmake to here... Not so good idea, or rather treat warnings on the cmake ( cmake disable warnings as errors ) command documentation for do! Warnings -- - there & # x27 ; t match yours an easy way to switch it off cant! 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