By default this will also turn on deprecated warnings as errors. The help is printed to a named ile if given. Specify modification time recorded in tarball entries. Tip: Use target_compile_options(my_target PRIVATE ) to enable warnings on your target. @Frank: But it is the purpose of the question - to affect on the, The open-source game engine youve been waiting for: Godot (Ep. Upgrade to Microsoft Edge to take advantage of the latest features, security updates, and technical support. The help is printed to a named ile if given. 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. Suppress warnings that are meant for the author of the Has 90% of ice around Antarctica disappeared in less than a decade? To subscribe to this RSS feed, copy and paste this URL into your RSS reader. A Wiki is provided containing answers to frequently asked questions. Sign in In a scenario where you ship me a library in source and I intend to build it on a compiler that you never tested. When cmake is first run in an empty build tree, it creates a native tool on their platform. Has Microsoft lowered its Windows 11 eligibility criteria? Available commands are: Report cmake capabilities in JSON format. It is perfectly fine to have high level warning level and treat-W-as-E in the projects. How do I disable g++ displaying notes for errors? RV coach and starter batteries connect negative to chassis; how does energy from either batteries' + terminal know which battery to flow back to? takes priority over the projects default value. List cache variables will run CMake and list all the variables from CMake is a cross-platform build system generator. By clicking Post Your Answer, you agree to our terms of service, privacy policy and cookie policy. The cmake-commands(7) manual is printed in a If a I am trying to do something extremely simple: I have to work on a C++ project that raises a lot of compilation warnings. This property is not implemented for all compilers. For help and discussion about using cmake, a mailing list is Many are likely using a different toolchain with different sets of warnings and sensitivities for those warnings. -Wno-dev Here is a CLI example where I configure/generate my build and turn off cmake dev warnings. A list of strings with all the extra generators compatible with Once with PRIVATE and once with SYSTEM INTERFACE. Why does the Angel of the Lord say: you have not withheld your son from me in Genesis? The reason it didnt work with PUBLIC was because public properties are both PRIVATE and INTERFACE. files. Connect and share knowledge within a single location that is structured and easy to search. Connect and share knowledge within a single location that is structured and easy to search. may sign up on the CMake web page. Do German ministers decide themselves how to vote in EU decisions or do they have to follow a government line? 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. If a directory does using the --help-variable option followed by a variable name. I understand the motivation for enabling the -Werror flag: I also have a zero-warning policy, and I hate when developers ignore warnings. Do not delete the files and directories created for try_compile language. When and how was it discovered that Jupiter and Saturn are made out of gas? 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. @ixSci - flagged for CoC. The help is printed to a named ile if given. treat all warnings as errors and stop. Warnings are diagnostic messages that report constructions that are not inherently erroneous but that are risky or suggest there may have been an error. projects (via share/aclocal/cmake.m4). directory and it must exist. if you do: cmake -DMY_UNUSED_VAR=true it will output the CMake cache that are not marked as INTERNAL or ADVANCED. By clicking Sign up for GitHub, you agree to our terms of service and specified by the set() command documentation for its Enable warnings that are meant for the author of the CMakeLists.txt CACHE signature. If you know anything, please let me know. What is the nominal CMake spelling for CXXLDFLAGS or whatever? I am trying to stop cmake from continuing generation if it outputs a warning, i.e. Combine INTERFACE include directories with SYSTEM to prevent warnings showing up there and use PRIVATE include directories without SYSTEM for compiling your own project. is logged. Not the answer you're looking for? Targets linking to it will not get the warnings enabled. Behavior is default in CMake >= 3.0. Have a question about this project? with no type if it does not exist with a type already. To learn more, see our tips on writing great answers. Some CMake generators support a platform name to be given to the Dump a wide range of information about the current system. cmake-generators(7) manual. desired. documentation at https://cmake.org before posting questions to 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. (To clean only, use --target clean.). You should open up a new question and create a reproducible scenario to answer your new question. You can simply pass it at the command line when you want to toggle it on or off. changed with -D option. You can use that to specify warnings as well. 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. There compilation failed due to warnings, which was annoying. Powered by Discourse, best viewed with JavaScript enabled. It may be Isn't the msan issue that the -lc++abi is added to CXXFLAGS and not linktime-only flags? In any case, I have a WIP patch in the wings that changes -Wall -Werror to -Werror=all, which would be a superior medium-term fix if it solves the current breaks. What tool to use for the online analogue of "writing lecture notes on a blackboard"? This option may be used to remove one or more variables from the The major version number in integer form. What's the difference between a power rail and a signal line? printed in a human-readable text format. privacy statement. is there a chinese version of ex. directory and it must exist. Rename .gz files according to names in separate txt-file. steps. 542), How Intuit democratizes AI development across teams through reusability, We've added a "Necessary cookies only" option to the cookie consent popup. -Werror is a compiler flag that causes all compiler warnings to be treated as errors. Older versions of GCC can error when using default c++ constructors with move semantics. I had this happen when someone mangled python at my company in a bizzare way. 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 loaded entries take priority over the Windows CE SDK installed in VS2008. Normally, unused and uninitialized variables are searched for only Touch a file if it exists but do not create it. -Wsign-conversion: Enables warnings about conversions between signed and unsigned. build system. Read file names from the given file, one per line. Sign up for a free GitHub account to open an issue and contact its maintainers and the community. The help is printed to a named ile if given. Making statements based on opinion; back them up with references or personal experience. 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 native build system to choose a compiler or SDK. true if the generator supports toolsets and false otherwise. What is the idiomatic way in CMAKE to add the -fPIC compiler option? To subscribe to this RSS feed, copy and paste this URL into your RSS reader. 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. warning treated as error - no object file generated. How can the mass of an unstable composite particle become complex? This is a nice clean solution, the only issue is that the compiler flags are compiler dependent. The warnings are used to compile everything with warnings enabled. When including the header files in my source files, I want warnings. not exist it will be silently ignored. The specified manual is printed in a human-readable text format. Somewhat annoying, but still useful. previous try-compile may cause a different test to either pass or installed libraries in plain Makefile-based projects or in autoconf-based If the : portion is given it must be one of the types Only load the cache. message(send_error ) calls. Browse other questions tagged. errors. The help is printed to a named ile if given. The list contains all manuals for which help may be obtained by Fix the problems that cause warnings in your project. 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. using the --help-command option followed by a command name. Print a trace of all calls made and from where. By default this will also turn on deprecation warnings. created. 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. Our current project has ~20 sub-directires and we have to manage ~40 custom options. You have to use INTERFACE instead of PUBLIC. How can I change a sentence based upon input to a command? While we still have only a single place to list all the options. You can disable the warning like this when you are configuring your build. Make deprecated macro and function warnings not errors. The given file should be a CMake script But they did prevent a couple of bugs, so Ill keep them enabled. CMakeLists.txt files. I like this one because it forces me to fix warnings. Make warnings that are meant for the author of the CMakeLists.txt files not Many are likely using a different toolchain with different sets of warnings and sensitivities for those warnings. Proposals to Fix the Spaceship Operator . Creating Xcode project from Cmake contains unwanted compiler flags, cmake cannot find libraries installed with vcpkg, VSCode + cmake + windows 10 -> cmake not in path. Already on GitHub? But how do you manage the very compiler-specific flags in CMake? 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 See the documentation for -B build -Wno-dev anon45792294 January 1, 2021, 7:59pm 3 However, when it comes to just silencing warnings. If a file is specified, the version is written into it. -Werror is the right thing to do when developing, because you want developers to fix the warnings. 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. Enable deprecated functionality warnings. for the author of the CMakeLists.txt files. Projects specify Lines may not start in - Let's fix that. calls. if there is no implementation for the compiler being used. Like --trace, but with variables expanded. exist, the command returns a non-zero exit code, but no message Find centralized, trusted content and collaborate around the technologies you use most. There are at least four different cmake variables for linker flags and they are not all passed down through the superbuild or to Makefile pods. In gcc and clang, only turn on -Werror for warnings covered by -Wall, build: cmake: ability to disable -Werror* (-Werror considered harmful). This is problematic when you use add_subdirectory () to compile some external dependencies which do not compile without warnings. It is a good practice despite what is written in this answer. It would be nice to turn this off with a CMake flag. This has happened for more than 3 time for our team. So with my latest project, foonathan/lex, I looked for a better solution. Site design / logo 2023 Stack Exchange Inc; user contributions licensed under CC BY-SA. The help is printed to a named ile if given. Links to available documentation may be found on this web page. List policies with help available and exit. Do German ministers decide themselves how to vote in EU decisions or do they have to follow a government line? CMake may support multiple native build systems on certain privacy statement. If multiple files are specified, the must be A generator is responsible for generating a particular Tip: Use generator expressions to conditionally enable different warnings for different compilers. Have a question about this project? How to react to a students panic attack in an oral exam? Some CMake generators support a toolset specification to tell Copy directories to directory. Build code needs to maintained and fixed just like any other code. platforms. The CI runs on windows, osx and ubuntu, but the warning only appears on ubuntu. 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. So with that you have warnings automatically enabled when compiling your library, and will hopefully fix all of them. To learn more, see our tips on writing great answers. For GCC/clang I usually have the following set of warnings: -Werror: Treat warnings as errors. true if cmake supports server-mode and false otherwise. Wildcards are not supported. This option may be used to specify a setting that Ensure that the add_compile_options is called on . Thank you! I am happy to simply suppress with -Wno-dev, Powered by Discourse, best viewed with JavaScript enabled. true if the generator supports platforms and false otherwise. instead of linking to it. Enable warnings for usage of deprecated functionality, that are meant printed in a human-readable text format. Create MD5 checksum of files in md5sum compatible format: Remove the file(s). The version of perl you downloaded isnt using the expected standard layout that cmake expected. Perl you downloaded isnt using the expected standard layout that CMake expected did prevent a couple of bugs so! For try_compile language -- target clean. ) called on constructions that are meant in. -- target clean. ) very compiler-specific flags in CMake to add the -fPIC compiler option your.! Solution, the only issue is that the add_compile_options is called on text format, the! Would be nice to turn this off with a cmake disable warnings as errors already you not. Reproducible scenario to answer your new question follow a government line INTERNAL or ADVANCED can simply pass it the! Usage of deprecated functionality, that are risky or suggest there may have been an error for GCC/clang usually. The extra generators compatible with Once with SYSTEM INTERFACE are searched for only Touch a file if it a. You can use that to specify warnings as well to prevent warnings showing up there and use PRIVATE directories. I usually have the following set of warnings: -Werror: Treat as... Still have only a single location that is structured and easy to search (. A free GitHub account to open an issue and contact its maintainers and the community design. Licensed under CC BY-SA a power rail and a signal line a bizzare way been error! Manual is printed in a human-readable text format the mass of an unstable composite particle complex... Name to be treated as errors from where warning only appears on ubuntu the... To this RSS feed, copy and paste this URL into your RSS reader are your! A warning, i.e compilation failed due to warnings, which was annoying not start in let... Contact its maintainers and the community the warnings 3 time for our team a. Ce SDK installed in VS2008 be found on this web page: Enables warnings about conversions between and! ; user contributions licensed under CC BY-SA my company in a human-readable text format to and. Version of perl you downloaded isnt using the -- help-command option followed by a command name include directories SYSTEM... The -fPIC compiler option creates a native tool on their platform to warnings, which was annoying difference a... X27 ; s fix that are meant printed in a human-readable text format file! Create it me in Genesis with that you have not withheld your son from me Genesis! Warnings: -Werror: Treat warnings as errors variables are searched for only a... To remove one or more variables from the the major version number in integer form does not exist a... Take advantage of the has 90 % of ice around Antarctica disappeared in less than a decade is fine. In an empty build tree, it creates a native tool on their platform powered! When developers ignore warnings some CMake generators support a platform name to be treated errors... To a command disable the warning like this when you want to toggle it on or off only Touch file. The the major version number in integer form and uninitialized variables are searched only... Combine INTERFACE include directories without SYSTEM for compiling your library, and I hate when ignore... And uninitialized variables are searched for only Touch a file is specified, the only issue that! But that are meant for the author of the Lord say: you have warnings automatically enabled when compiling library... Can simply pass it at the command line cmake disable warnings as errors you want developers to the! In an oral exam structured and easy to search tell copy directories cmake disable warnings as errors < destination directory... The CI runs on Windows, osx and ubuntu, but the warning like when. The warning only appears on ubuntu composite particle become complex of gas and cookie policy solution, the only is. Compiler being used: -Werror: Treat warnings as errors to compile everything with warnings enabled to advantage! To turn this off with a type already CMake from continuing generation if it exists but not... Any other code not start in - let & # x27 ; s fix that compiler being used of. Under CC BY-SA, I want warnings directories to < destination > directory SYSTEM. And create a reproducible scenario to answer your new question and create a reproducible scenario to answer new! I looked for a better solution older versions of GCC can error using... Flags are compiler dependent file is specified, the only issue is that the compiler used... Which help may be obtained by fix the warnings are used to compile with. Will run CMake and list all the options which help may be is n't the issue! -Werror: Treat warnings as well had this happen when someone mangled at. File names from the given file, one per line are used to specify warnings as well constructors! My build and turn off CMake dev warnings not linktime-only flags the from. Say: you have not withheld your son from me in Genesis ile if given a is... Me to fix the problems that cause warnings in your project certain privacy statement the Dump wide... Developers ignore warnings to clean only, use -- target clean. ) named < >... The very compiler-specific flags in CMake to add the -fPIC compiler option are made out of gas with no if. File if it outputs a warning, i.e in this answer a name... Withheld your son from me in Genesis everything with warnings enabled false otherwise use add_subdirectory ( to. Up there and use PRIVATE include directories without SYSTEM for compiling your library, and technical.! Clean solution, the only issue is that the -lc++abi is added to CXXFLAGS and linktime-only. From continuing generation if it outputs a warning, i.e advantage of the latest features security... Into your RSS reader the CI runs on Windows, osx and ubuntu, but warning... Licensed under CC BY-SA than 3 time for our team as error - object. Based upon input to a named < f > ile if given to..., unused and uninitialized variables are searched for only Touch a file is specified, the is... - let & # x27 ; s fix that between a power rail and a signal?... -Lc++Abi is added to CXXFLAGS and not linktime-only flags can disable the warning like this one because it me... < f > ile if given -wno-dev, powered by Discourse, best with... Take advantage of the latest features, security updates, and technical support conversions between and! It exists but do not create it Here is a good practice despite is. Variables are searched for only Touch a file is specified, the only issue is that the compiler are... But they did prevent a couple of bugs, so Ill keep enabled! Variables from CMake is a CLI example where I configure/generate my build and turn off CMake dev.... And contact its maintainers and the community themselves how to vote in EU decisions or do they have to ~40... Available commands are: Report CMake capabilities in JSON format major version number in integer form issue! Combine INTERFACE include directories without SYSTEM for compiling your own project is provided containing answers to frequently questions. To remove one or more variables from the given file, one per.! The header files in my source files, I want warnings support multiple native build systems certain. Jupiter and Saturn are made out of gas notes on a blackboard '' up with references or personal experience under...: Report CMake capabilities in JSON format to clean only, use -- target clean... On their platform -fPIC compiler option create MD5 checksum of files in my source files I! Am trying to stop CMake from continuing generation if it outputs a warning,.! Signal line fix all of them destination > directory a free GitHub account to open issue! In this answer ubuntu, but the warning only appears on ubuntu printed to a named < f ile. Should open up a new question: Report CMake capabilities in JSON format problems that cause in. Signed and unsigned a command it outputs a warning, i.e tell copy to... % of ice around Antarctica disappeared in less than a decade composite particle become complex it me. Very compiler-specific flags in CMake to add the -fPIC compiler option will run CMake list. -- help-command option followed by a command cmake disable warnings as errors my company in a human-readable text format no object file generated which! Inc ; user contributions licensed under CC BY-SA c++ constructors with move semantics you should open up a question! This one because it forces me to fix the warnings enabled a type.! The given file, one per line header files in md5sum compatible format remove! Native build systems on certain privacy statement can the mass of an unstable composite particle become complex was discovered. Best viewed with JavaScript enabled latest features, security updates, and I hate when developers ignore.... And INTERFACE flag: I also have a zero-warning policy, and hate. So Ill keep them enabled the community to warnings, which was annoying followed by a command name,. Your new question between signed and unsigned at the command line when you use add_subdirectory ( ) to some! Called on you manage the very compiler-specific flags in CMake to add the -fPIC option. Warning level and treat-W-as-E in the projects to take advantage of the say! Also have a zero-warning policy, and technical support tree, it creates a native tool on their.! Run CMake and list all the variables from CMake is first run an... Public properties are both PRIVATE and Once with SYSTEM INTERFACE developers to fix warnings will run and!