cmake disable warnings as errors

How can I configure CMake to treat compiler warnings as errors during the build? Use TreatWarningsAsErrors to treat all warnings as errors. The cmake-properties(7) manual entries for are in more variables being created. What does a search warrant actually look like? Displays a batch file which sets the environment for the provided That way you will automatically have warnings when compiling your project but other users wont. 542), How Intuit democratizes AI development across teams through reusability, We've added a "Necessary cookies only" option to the cookie consent popup. I am looking for a more general option, something like: CMAKE_WARN_AS_ERROR. Specify modification time recorded in tarball entries. if you do: cmake -DMY_UNUSED_VAR=true it will output The help is printed to a named ile if given. This is required and must be first. fail incorrectly. Compilers will not issue warnings from header files originating from there. Should I include the MIT licence of a library which I use from a CDN? Compile at a lower warning levelfor example, use /W3 instead of /W4. Suppress warnings for usage of deprecated functionality, that are meant Have a question about this project? Some CMake generators support a platform name to be given to the 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. Generate graphviz of dependencies, see CMakeGraphVizOptions.cmake for more. This should also be reflected by the build files. In a scenario where you ship me a library in source and I intend to build it on a compiler that you never tested. Blank lines are ignored. Change the current working directory and run a command. Touch a file if it exists but do not create it. this issue happens on my CI. then returns 0, if not it returns 1. I think this is problematic, because your code is designed with a certain warning level in mind. -Wconversion: Enables warnings about conversions that might change the value like float to int. It is silently ignored if there is no implementation for the compiler being used. Theoretically Correct vs Practical Notation. How do I disable g++ displaying notes for errors? on the cmake(1) command line, this property is ignored. using the --help-variable option followed by a variable name. Find centralized, trusted content and collaborate around the technologies you use most. 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. So it becomes a part of your build and all the targets become "your" targets - it's no longer an external library. I have found the dev and deprecated warning option to do this but ill like this to happen on any warning. Warnings are diagnostic messages that report constructions that are not inherently erroneous but that are risky or suggest there may have been an error. cmake -S . Rename .gz files according to names in separate txt-file. If a file is specified, the version is written into it. So with that you have warnings automatically enabled when compiling your library, and will hopefully fix all of them. Only load the cache. Ackermann Function without Recursion or Stack. The above warnings will work on GCC and clang, but not MSVC. Using CMake, how do I get verbose output from CTest? I like this one because it forces me to fix warnings. if you do: CMake Warning: Manually-specified variables were not used by the project: MY_UNUSED_VAR. files. @david-german-tri Let's DM about who is going to take on this ticket. 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. printed in a human-readable text format. What's the difference between a power rail and a signal line? This option may be used to specify a setting that It is a good practice despite what is written in this answer. is there a chinese version of ex. This is a nice clean solution, the only issue is that the compiler flags are compiler dependent. By clicking Post Your Answer, you agree to our terms of service, privacy policy and cookie policy. I occasionally forgot to do that, implemented a feature, pushed it to CI. Can you just provide answer on how to ignore all warnings instead of giving advices nobody is looking for? The simpler, the better. If the : portion is omitted the entry will be created Is variance swap long volatility of volatility? Analysis level For more information on optional warnings, see Warning waves. to load cache entries before the first pass through the projects Economy picking exercise that uses two consecutive upstrokes on the same string. It turns out the answer was to simply add the line. Create or extract a tar or zip archive. A Wiki is provided containing answers to frequently asked questions. See the documentation for Proposals to Fix the Spaceship Operator . It is a pods workaround for the superbuild. The MSan builds, in particular. It enables common warnings like use of uninitialized variables. The text was updated successfully, but these errors were encountered: @jamiesnape Please link to one or two breaks, for our reference. You have to use INTERFACE instead of PUBLIC. Thanks. Without that flag a warning is generated when compiling, but you might miss it. Make deprecated macro and function warnings errors. Dont find variables that are declared on the command line, but not steps. executable dependencies in the project. Open up the CMakeLists.txt file and, underneath the section add_executable, add the following: target_compile_options(${PROJECT_NAME} PRIVATE. Powered by Discourse, best viewed with JavaScript enabled. A generator is responsible for generating a particular Or your cmake code could just be wrong. Which basecaller for nanopore is the best to produce event tables with information about the block size/move table? Please first read the full The major version number in integer form. in a human-readable text format. UNIX is a registered trademark of The Open Group. While the above method works greater for most libraries, it doesnt work with header-only libraries. A bool that is set if the cmake build is from a dirty tree. Created using. This mode is not well-supported due to some technical limitations. Not the answer you're looking for? List properties with help available and exit. The list contains all variables for which help may be obtained by Many are likely using a different toolchain with different sets of warnings and sensitivities for those warnings. but as a library writer you can prevent the issue for projects with you as a dependency. Only useful on one try_compile at a time. So on CI, for example, I invoked CMake with: That way the compiler will always have the warning flags enabled. Thanks for contributing an answer to Stack Overflow! -Wno-error=dev. warn about other files as well. Read file names from the given file, one per line. An error be is a syntax error that prevents compilation. I am trying to stop cmake from continuing generation if it outputs a warning, i.e. 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. Wildcards are not supported. So, it may be a configuration issue. 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. Applications of super-mathematics to non-super mathematics. By clicking Accept all cookies, you agree Stack Exchange can store cookies on your device and disclose information in accordance with our Cookie Policy. As final solutions, I think we should do one of two approaches: Create a CMake function called for all our targets. takes priority over the projects default value. How to increase the number of CPUs in my computer? Enable deprecated functionality warnings. display also advanced variables. A list of strings with all the extra generators compatible with If necessary, create parent 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. Enable warnings that are meant for the author of the CMakeLists.txt in CMAKE_SOURCE_DIR and CMAKE_BINARY_DIR. text format. e.g. Build instead of default targets. -D:= or -D=. Share Improve this answer answered Mar 29, 2019 at 16:05 muru Have a CMAKE option to disable warnings as errors, Large build overhaul, restructuring into "superbuild. 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. Adding the include directory again but without SYSTEM doesnt seem to work reliably, Sign in additional information such as the cache, log files etc. Judging by the answer you posted, I'm guessing it's either. Otherwise its a painful guessing game. You signed in with another tab or window. using the --help-command option followed by a command name. How to suppress PAM audit logs for RHEL8? Enabling -Werror by default causes broken builds for your consumers and is a bad practice. All manuals are printed in a human-readable text format. The list contains all commands for which help may be obtained by Displays arguments as text but no new line. How to suppress all warnings being treated as errors for format-truncation, The open-source game engine youve been waiting for: Godot (Ep. The option may be repeated for as many cache entries as Copyright 2000-2023 Kitware, Inc. and Contributors. You signed in with another tab or window. The help is printed to a named ile if given. Cite a source instead of ad-hom-ing me. so I dont know any other solution besides duplicating the configuration of the my_library target for my_library_test as well, Windows CE SDK installed in VS2005. Thanks for contributing an answer to Stack Overflow! may be specified on the command line with the -D option. The cmake-commands(7) manual is printed in a If you know anything, please let me know. If a deprecation warnings. Previous topic CMAKE_COMPILE_PDB_OUTPUT_DIRECTORY_<CONFIG> Next topic CMAKE_<CONFIG>_POSTFIX This Page Show Source Quick search specified by the set() command documentation for its Thank you! Copyright 2000-2017 Kitware, Inc. and Contributors. the project. A warning is a potential runtime error and should never be ignored. How can the mass of an unstable composite particle become complex? Hiding all warnings sounds like a not so good idea, or rather treat warnings as errors. Pass remaining options to the native tool. Ignored. That way external code will not get warnings from header files but your code will. Enable warnings for usage of deprecated functionality, that are meant By clicking Post Your Answer, you agree to our terms of service, privacy policy and cookie policy. Make warnings for usage of deprecated macros and functions, that are meant Older versions of GCC can error when using default c++ constructors with move semantics. The common suggestion is: if (MSVC) add_compile_options(/W4 /WX) else() add_compile_options(-Wall -Wextra -pedantic -Werror) endif() That sounds more or less fine except it is compiler specific (isn't CMake supposed to abstract from that?) Remove matching entries from CMake cache. 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? The loaded entries take priority over the Developers who enable -Werror are making a statement: we care about our code base, and we won't accept warnings here. You can use that to specify warnings as well. Not the answer you're looking for? I am trying to build my source using gcc 8.3.0. Don't use /WX to compile. true if cmake supports server-mode and false otherwise. Why did the Soviets not shoot down US spy satellites during the Cold War? I'd like to thus propose closing this issue. What is CMake equivalent of 'configure --prefix=DIR && make all install '? for the author of the CMakeLists.txt files. Somewhat annoying, but still useful. i have sometimes unused variables/options which outputs a cmake warning, to prevent anyone from passing unused variables to the generation i like to enable such an option. The version of perl you downloaded isnt using the expected standard layout that cmake expected. You can disable the warning like this when you are configuring your build. Speaking as someone who regularly uses top-of-tree compiler builds, where warnings break frequently, hard-coded warnings-as-errors is a blight. 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. If files are the same, While we still have only a single place to list all the options. Why did the Soviets not shoot down US spy satellites during the Cold War? May only be specified once. Does With(NoLock) help with query performance? The warnings are used to compile everything with warnings enabled. What is the nominal CMake spelling for CXXLDFLAGS or whatever? Just registered to this forum for this topic. Browse other questions tagged, Where developers & technologists share private knowledge with coworkers, Reach developers & technologists worldwide, I'd rather make the compiler stop on the first error when I want to see it clear. The cmake-variables(7) manual is printed in a not exist it will be silently ignored. This is to prevent erroneous user parameter settings. the native build system how to choose a compiler. Is lock-free synchronization always superior to synchronization using locks? 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. Similarly, you can use CXXFLAGS for providing options to the C++ compiler, and LDFLAGS for the linker. Well occasionally send you account related emails. zero exit code (i.e. If you compile with an option such as -Werror to treat warnings as errors, this is a blocking issue. human-readable text format. After thinking about it some more, I think I see your point now. How to increase the number of CPUs in my computer? What do I need to add to my CMakeLists.txt to make that happen? If directory does not exist it will be created. created. Tip: For header-only libraries enable warnings on the test target of the library. Connect and share knowledge within a single location that is structured and easy to search. I had this happen when someone mangled python at my company in a bizzare way. treat all warnings as errors and stop. This time the GCC compiler properly flags the problem with our code. Change color of a paragraph containing aligned equations, Ackermann Function without Recursion or Stack. Whatever the case is. The help is printed to a named ile if given. -Werror is the right thing to do when developing, because you want developers to fix the warnings. Well occasionally send you account related emails. See the The -f option changes the behavior to return a I am looking for a more general option, something like: CMAKE_WARN_AS_ERROR. human-readable text format. Print a warning when an uninitialized variable is used. success) in such situations instead. @ixSci - flagged for CoC. CMakeGraphVizOptions.cmake for more details. Tip: Use generator expressions to conditionally enable different warnings for different compilers. 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. - 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. How can I change a sentence based upon input to a command? This error only appears when the /WX flag is set and a warning occurs during compilation. Connect and share knowledge within a single location that is structured and easy to search. 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. The help is printed to a named ile if given. To subscribe to this RSS feed, copy and paste this URL into your RSS reader. Note that this is not equivalent to -Werror -pedantic, because why would it? Path to where symbolic link will be created has to exist beforehand. Easiest way to remove 3/16" drive rivets from a lower screen door hinge? Fix the problems that cause warnings in your project. CMAKE_GENERATOR_TOOLSET variable for details. By clicking Accept all cookies, you agree Stack Exchange can store cookies on your device and disclose information in accordance with our Cookie Policy. It could be user error: You could be using find_package incorrectly. By clicking Accept all cookies, you agree Stack Exchange can store cookies on your device and disclose information in accordance with our Cookie Policy. C++ compilers are forced to accept a lot of stupid code, like functions without return, use of uninitialized warnings, etc. desired. Projects specify Make warnings that are meant for the author of the CMakeLists.txt files not errors. Available commands are: Report cmake capabilities in JSON format. The cmake-policies(7) manual is printed in a Use target_compile_options() and generator expressions to enable the warnings for your library target, installed libraries in plain Makefile-based projects or in autoconf-based Here is a CLI example where I configure/generate my build and turn off cmake dev warnings. To learn more, see our tips on writing great answers. Use a warning pragma to disable or suppress a specific warning. used. This enables warning level four, which is a lot but not too much, and treats them as errors. If H is specified, it will also List cache variables will run CMake and list all the variables from The list contains all manuals for which help may be obtained by CMAKE_GENERATOR_PLATFORM variable for details. paxr (restricted pax, default), and zip. CMakeCache.txt file, globbing expressions using * and ? project binary tree: This abstracts a native build tools command-line interface with the I recommend browsing through the list of warnings (GCC/clang) and taking a look for yourselves. -Wall: A better name would be -Wcommon. The following cmake -E commands are available only on UNIX: Create a symbolic link naming . This option may be used to specify a file from which In gcc and clang, only turn on -Werror for warnings covered by -Wall, build: cmake: ability to disable -Werror* (-Werror considered harmful). Each generator is a JSON object with the Learn more about Stack Overflow the company, and our products. Use a warning pragma to disable or suppress a specific warning. Thanks, @anon45792294 ! If run Display the current environment variables. for the author of the CMakeLists.txt files. 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? not exist it will be silently ignored. calls. Windows CE SDK installed in VS2008. If the cmake --compile-no-warning-as-error option is given Linux is a registered trademark of Linus Torvalds. Make warnings that are meant for the author of the CMakeLists.txt files not Users build a project by using CMake to generate a build system for a rev2023.3.1.43269. If A is specified, then it will display help for each variable. What you can do instead is create a non-interface target that has to be compiled, just for the purposes of checking warnings. may sign up on the CMake web page. If any of the listed files already do not 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. Created using. For GCC/clang I usually have the following set of warnings: -Werror: Treat warnings as errors. 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. following options: Project binary directory to be built. By default this will also turn on deprecation warnings. Specify platform name if supported by generator. The help is printed to a named ile if given. Specify whether to treat warnings on compile as errors. The interface properties are only given to external targets linking to your target, The help is printed to a named ile if given. 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. Linux is so heterogeneous that this effectively means your releases don't build. The help is printed to a named ile if given. 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. Make warnings that are meant for the author of the CMakeLists.txt files Why does the Angel of the Lord say: you have not withheld your son from me in Genesis? Asking for help, clarification, or responding to other answers. Create