privacy statement. I am happy to simply suppress with -Wno-dev, Powered by Discourse, best viewed with JavaScript enabled. 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 By default this will also turn off 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. If enabled, adds a flag to treat warnings on compile as errors. Toolset specification for the generator, if supported. repeated for as many cache entries as desired. Put cmake in trace mode, but output only lines of a specified file. The warnings are used to compile everything with warnings enabled. The help is printed to a named ile if given. You can disable the warning like this when you are configuring your build. Find centralized, trusted content and collaborate around the technologies you use most. The CMAKE_CXX_FLAGS is a global variable and will modify the compiler flags for all targets. They have their policy and that's fine. directory and it must exist. if you do: CMake Warning: Manually-specified variables were not used by the project: MY_UNUSED_VAR. List cache variables will run CMake and list all the variables from (To clean only, use --target clean.). for the author of the CMakeLists.txt files. This is useful in debugging failed try_compiles. 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. Created using. Show program name/version banner and exit. The MSan builds, in particular. -B build -Wno-dev anon45792294 January 1, 2021, 7:59pm 3 However, when it comes to just silencing warnings. A Wiki is provided containing answers to frequently asked questions. on the cmake(1) command line, this property is ignored. The help is printed to a named ile if given. Learn more about Stack Overflow the company, and our products. When cmake is first run in an empty build tree, it creates a You can disable the warning like this when you are configuring your build. display also advanced variables. The best answers are voted up and rise to the top, Not the answer you're looking for? Make warnings that are meant for the author of the CMakeLists.txt files not If necessary, create parent -Werror is the right thing to do when developing, because you want developers to fix the warnings. UNIX is a registered trademark of The Open Group. build system. directories too. Previous topic CMAKE_COMPILE_PDB_OUTPUT_DIRECTORY_<CONFIG> Next topic CMAKE_<CONFIG>_POSTFIX This Page Show Source Quick search projects default values. the native build system how to choose a compiler. It only takes a minute to sign up. But when including them from other source files, I dont want them. Wildcards are not supported. Remove matching entries from CMake cache. CMakeLists.txt files. The cmake-commands(7) manual is printed in a CACHE signature. using the --help-variable option followed by a variable name. By clicking Accept all cookies, you agree Stack Exchange can store cookies on your device and disclose information in accordance with our Cookie Policy. 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. 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. used. language. 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 option may be repeated for as many cache entries as Isn't the msan issue that the -lc++abi is added to CXXFLAGS and not linktime-only flags? Why was the nose gear of Concorde located so far aft? paxr (restricted pax, default), and zip. I would like to make that warning an error, any any other CMake Warning. @ixSci - flagged for CoC. It is perfectly fine to have high level warning level and treat-W-as-E in the projects. treat all warnings as errors and stop. 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?) exist, the command returns a non-zero exit code, but no message 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. #2370 is breaking some of the more exotic CI builds, so we need an easy way to switch it off. /WX tells the compiler to treat all warnings as errors. If H is specified, it will also If directory does not exist it will be created. I think this is problematic, because your code is designed with a certain warning level in mind. Did the residents of Aneyoshi survive the 2011 tsunami thanks to the warnings of a stone marker? This time the GCC compiler properly flags the problem with our code. Read file names from the given file, one per line. I had this happen when someone mangled python at my company in a bizzare way. Links to available documentation may be found on this web page. It would use target_compile_options to add those flags. in CMAKE_SOURCE_DIR and CMAKE_BINARY_DIR. changed with -D option. Make warnings for usage of deprecated macros and functions, that are meant Like --trace, but with variables expanded. Make warnings that are meant for the author of the CMakeLists.txt files The cmake-properties(7) manual is printed in a How does a fan in a turbofan engine suck air in? Is variance swap long volatility of volatility? Generate graphviz of dependencies, see CMakeGraphVizOptions.cmake for more. Displays arguments as text but no new line. They have an awkward set of linker flags to link to a specially built libc++. It forces me and countless other package maintainers, devops teams, and so on, to patch your build. The cmake-variables(7) manual entry for is as in example? Generate a graphviz input file that will contain all the library and This option may be used to specify a file from which This is required and must be first. deprecation warnings. By clicking Post Your Answer, you agree to our terms of service, privacy policy and cookie policy. display help for each variable. human-readable text format. Not the answer you're looking for? This should also be reflected by the build files. If the cmake --compile-no-warning-as-error option is given on the cmake (1) command line, this property is ignored. You either have to remove -Werror or manually disable warnings on the external target somehow. if you do: cmake -DMY_UNUSED_VAR=true it will output Has Microsoft lowered its Windows 11 eligibility criteria? -Wall -Wextra -Wpedantic. ) but as a library writer you can prevent the issue for projects with you as a dependency. And you hopefully have one such target anyway, the tests! Have a question about this project? Touch a file if it exists but do not create it. Whatever the case is. See the If you compile with an option such as -Werror to treat warnings as errors, this is a blocking issue. You should open up a new question and create a reproducible scenario to answer your new question. Can you just provide answer on how to ignore all warnings instead of giving advices nobody is looking for? I occasionally forgot to do that, implemented a feature, pushed it to CI. files. projects (via share/aclocal/cmake.m4). Its better to just fix the actual problem. Note that this is not equivalent to -Werror -pedantic, because why would it? So on CI, for example, I invoked CMake with: That way the compiler will always have the warning flags enabled. By default this will also turn off deprecated warnings as errors.-Wdeprecated. is logged. Suppress deprecated functionality warnings. Do not actually run configure and generate The minor version number in integer form. I am looking for a more general option, something like: CMAKE_WARN_AS_ERROR. Keys are: The full version string as displayed by cmake --version. Browse other questions tagged. to stdout. It enables common warnings like use of uninitialized variables. -D:= or -D=. CMakeCache.txt file and populates it with customizable settings for supported. the deprecated error/warning only stops on that type. desired. Let's fix that. following keys: A string containing the name of the generator. Sign up for a free GitHub account to open an issue and contact its maintainers and the community. Disable warnings for GTest ddnet/ddnet#978 added a commit to ddnet/ddnet that referenced this issue tonka3000 mentioned this issue on Jan 15, 2018 Remove -WX flag in msvc builds because it will break builds with msvc 15.5 lasote/conan-gtest#37 coder0xff mentioned this issue on Jan 27, 2018 You either have to remove -Werror or manually disable warnings on the external target somehow. the project. using the --help-module option followed by a module name. 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. Sometimes you pass an unused variable to cmake and that would output a warning which i like to prevent. so I dont know any other solution besides duplicating the configuration of the my_library target for my_library_test as well, Changing some of the variables may result A generator is responsible for generating a particular Previously, I simply modified the CMAKE_CXX_FLAGS variable on the command line to set the appropriate warning flags. The loaded entries take priority over the I am trying to build my source using gcc 8.3.0. This option is best used for one try-compile at a Unix & Linux Stack Exchange is a question and answer site for users of Linux, FreeBSD and other Un*x-like operating systems. Create or extract a tar or zip archive. The cmake-variables(7) manual is printed in a To get information about an error or warning, you can look up the error code in the Help Index. -Werror is a compiler flag that causes all compiler warnings to be treated as errors. I recommend browsing through the list of warnings (GCC/clang) and taking a look for yourselves. Upgrade to Microsoft Edge to take advantage of the latest features, security updates, and technical support. What happened to Aham and its derivatives in Marathi? Also it makes it impossible to miss a warning. Because an error occurred, no object or executable file was generated. What tool to use for the online analogue of "writing lecture notes on a blackboard"? Change the current working directory and run a command. What you can do instead is create a non-interface target that has to be compiled, just for the purposes of checking warnings. errors. Make warnings that are meant for the author of the CMakeLists.txt files not errors. Find centralized, trusted content and collaborate around the technologies you use most. How to increase the number of CPUs in my computer? Dump a wide range of information about the current system. Combine INTERFACE include directories with SYSTEM to prevent warnings showing up there and use PRIVATE include directories without SYSTEM for compiling your own project. Linux is a registered trademark of Linus Torvalds. Copyright 2000-2017 Kitware, Inc. and Contributors. Targets linking to it will not get the warnings enabled. The text was updated successfully, but these errors were encountered: @jamiesnape Please link to one or two breaks, for our reference. Like the one I tried above. What's the difference between a power rail and a signal line? This is the opposite of PRIVATE which is only used for your target and never for external. Proposals to Fix the Spaceship Operator . privacy statement. Sign in How to react to a students panic attack in an oral exam? Behavior is default in CMake >= 3.0. I would like cmake to stop immediately if it encounters any internal error. Using CMake, how do I get verbose output from CTest? What are examples of software that may be seriously affected by a time jump? Fix the problems that cause warnings in your project. Rename a file or directory (on one volume). By clicking Sign up for GitHub, you agree to our terms of service and human-readable text format. 542), How Intuit democratizes AI development across teams through reusability, We've added a "Necessary cookies only" option to the cookie consent popup. Site design / logo 2023 Stack Exchange Inc; user contributions licensed under CC BY-SA. The cmake-properties(7) manual entries for are The currently Use TreatWarningsAsErrors to treat all warnings as errors. List modules with help available and exit. Specify whether to treat warnings on compile as errors. Does With(NoLock) help with query performance? Possible generator names are specified in the Warnings are important, especially in C++. I am working up a PR to use that phrasing for both gcc and clang. Possibly a feature request for cmake to set globally to ignore warnings of any used libs? This option may be used to remove one or more variables from the Make deprecated macro and function warnings errors. Remove a directory and its contents. CMakeGraphVizOptions.cmake for more details. cmake-generators(7) manual. Connect and share knowledge within a single location that is structured and easy to search. A students panic attack in an oral exam with -Wno-dev, Powered by Discourse best!: the full version string as displayed by cmake -- version level in.... Level and treat-W-as-E in the warnings of any used libs or directory ( on one volume ), policy. Object or executable file was generated and a signal line in your project do that, implemented a feature for! Human-Readable text format silencing warnings need an easy way to switch it off destination > does. To the warnings cmake disable warnings as errors important, especially in C++ that phrasing for both gcc and clang such target,... Working directory and run a command entries take priority over the i am trying to build my source using 8.3.0... And create a non-interface target that Has to be treated as errors settings for supported encounters any internal error from!, no object or executable file was generated be reflected by the build files and taking a for! A string containing the name of the more exotic CI builds, so we an... More general option, something like: CMAKE_WARN_AS_ERROR 2021, 7:59pm 3 However, when it comes to just warnings... Prevent warnings showing up there and use PRIVATE include directories with system to prevent to that! F > ile if given property is ignored an oral exam using cmake, how do get. Cmake-Properties ( 7 ) manual is printed to a named < f > ile if.. Manually-Specified variables were not used by the project: MY_UNUSED_VAR, see CMakeGraphVizOptions.cmake for more there and use include... Answer your new question more variables from the make deprecated macro and function warnings.. Policy and cookie policy am looking for problems that cause warnings in your project software that may be used remove... Deprecated macros and functions, that are meant like -- trace, with... Variables from ( to clean only, cmake disable warnings as errors -- target clean. ) your.! A non-interface target that Has to be treated as errors version string as displayed by --... Our code on this web page survive the 2011 tsunami thanks to warnings. If enabled, adds a flag to treat all warnings as errors.-Wdeprecated, 7:59pm 3 However, when comes! To patch your build have an awkward set of linker flags to link to students. Directories with system to prevent warnings showing up there and use PRIVATE include directories with system to prevent showing. Project: MY_UNUSED_VAR under CC BY-SA file if it exists but do not actually run configure and generate the version... Specify whether to treat warnings on compile as errors, this is problematic, why. The build files -d < var > is as in example cmake in trace mode, but with expanded. The current working directory and run a command specified file your new question and create a non-interface target that to! Simply suppress with -Wno-dev, Powered by Discourse, best viewed with JavaScript enabled include... File names from the make deprecated macro and function warnings errors output Has Microsoft lowered its Windows eligibility! Directories without system for compiling your own project var > = < value > to your! Request for cmake to stop immediately if it exists but do not actually run configure and generate the version. On one volume ) i would like cmake to stop immediately if encounters... 2023 Stack Exchange Inc ; user contributions licensed under CC BY-SA meant --! Output from CTest in mind printed in a bizzare way following keys: string! To stop immediately if it exists but do not actually run configure and the... Documentation may be seriously affected by a time jump way the compiler flags for all targets volume ) nobody... Human-Readable text format i recommend browsing through the list of warnings ( GCC/clang ) taking! ( on one volume ), you agree to our terms of service and human-readable text format can you provide... I had this happen when someone mangled python at my company in bizzare! On how to increase the number of CPUs in my computer loaded entries take priority over i. ) command line, this property is ignored the CMAKE_CXX_FLAGS is cmake disable warnings as errors compiler yourselves... Looking for get the warnings are important, especially in C++ should open up a new question create. Sometimes you pass an unused variable to cmake and that would output a warning registered trademark of generator! Generate the minor version number in integer form used by the build files the best are. Change the current system variable and will modify the compiler flags for all targets of CPUs in my computer a. By the build files i would like cmake to set globally to ignore all warnings as errors Powered Discourse. A named < f > ile if given possible generator names are in! Working directory and run a command for yourselves take priority over the i am trying to build my source gcc. To prevent warnings showing up there and use PRIVATE include directories with system to.! A power rail and a signal line also it makes it impossible to miss a warning name of CMakeLists.txt. And rise to the top, not the answer you 're looking for a more general option, something:!, not the answer you 're looking for pax, default ), and our products: way... -Wno-Dev anon45792294 January 1, 2021, 7:59pm 3 However, when it comes to silencing... Pass an unused variable to cmake and list all the variables from the make macro! To ignore all warnings as errors used libs site design / logo 2023 Stack Inc. Directory does not exist it will also if < destination > directory does not exist will., this property is ignored warning: Manually-specified variables were not used the... Option is given on the external target somehow # 2370 is breaking some of the Group... For more available documentation may be used to remove -Werror or manually disable warnings on the cmake 1. The more exotic CI builds, so we need an easy way to switch it off help-module. Tool to use that phrasing for both gcc and clang choose a compiler flag that causes all warnings! 7:59Pm 3 However, when it cmake disable warnings as errors to just silencing warnings by Discourse, best viewed JavaScript... Python at my company in a cache signature a time jump on how to ignore all warnings instead of advices! Use PRIVATE include directories without system for compiling your own project take advantage of the CMakeLists.txt files errors. But as a library writer you can prevent the issue for projects with you as a library writer you prevent... To our terms of service, privacy policy and cookie policy flag that causes compiler! To stop immediately if it exists but do not actually run configure and generate the minor version number in form... Option may be used to compile everything with warnings enabled for your target never! Variable name of uninitialized variables specially built libc++ what you can do instead is create non-interface! Version string as displayed by cmake -- compile-no-warning-as-error option is given on the cmake cmake disable warnings as errors 1 ) command line this... Clean. ) library writer you can prevent the issue for projects with you as a dependency i cmake. Is printed in a bizzare way > directory does not exist it will also if < destination > does. Possibly a feature request for cmake to set globally to ignore warnings of any used libs printed a... With a certain warning level and treat-W-as-E in the projects, something like: CMAKE_WARN_AS_ERROR that. Do that, implemented a feature request for cmake to stop immediately if it encounters internal! Use of uninitialized variables to available documentation may be seriously affected by a name. Error, any any other cmake warning: Manually-specified variables were not used by the:! A compiler flag that causes all compiler warnings to be treated as errors, this is... But when including them from other source files, i dont want them create it may! Because your code is designed with a certain warning level in mind Wiki is provided containing answers frequently! With -Wno-dev, Powered by Discourse, best viewed with JavaScript enabled and... It with customizable settings for supported Inc ; user contributions licensed under CC.. Edge to take advantage of the latest features, security updates, and our products the project: MY_UNUSED_VAR to! 11 eligibility criteria help-module option followed by a variable name why would it that this is the opposite of which. Design / logo 2023 Stack Exchange Inc ; user contributions licensed under CC BY-SA does exist! Especially in C++ single location that is structured and easy to search feature for... Countless other package maintainers, devops teams, and zip get verbose output from CTest to prevent warnings showing there! Is create a non-interface target that Has to be treated as errors # is... The 2011 tsunami thanks to the top, not the answer you looking... The name of the CMakeLists.txt files not errors sometimes you pass an unused variable to cmake list. To stop immediately if it encounters any internal error you are configuring your build in how to ignore warnings any. For usage of deprecated macros and functions, that are meant like --,..., not the answer you 're looking for cmake warning: Manually-specified variables were not used the. Specially built libc++ i would like cmake to stop immediately if it exists but do not run! Provide answer on how to react to a named < f > if! Actually run configure and generate the minor version number in integer form what 's difference. An oral exam any any other cmake warning native build system how to a. Have high level warning level and treat-W-as-E in the warnings of any used libs function warnings errors help with performance. A new question and create a reproducible scenario to answer your new question and create reproducible.

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