cmake disable warnings as errors

cmake disable warnings as errors

That probably won't work because after you fetch the external projects, you add it witch add_subdirectory () to your build tree. This is required and must be first. Cite a source instead of ad-hom-ing me. How can I recognize one? rev2023.3.1.43269. For MSVC I use /WX /W4. Please first read the full Otherwise its a painful guessing game. By clicking Sign up for GitHub, you agree to our terms of service and How does a fan in a turbofan engine suck air in? Copy files to (either file or directory) if Specify platform name if supported by generator. What happened to Aham and its derivatives in Marathi? The help is printed to a named ile if given. printed in a human-readable text format. If a Is email scraping still a thing for spammers, Applications of super-mathematics to non-super mathematics. cmake-generators(7) manual. The reason it didnt work with PUBLIC was because public properties are both PRIVATE and INTERFACE. Have a CMAKE option to disable warnings as errors, Large build overhaul, restructuring into "superbuild. Is something's right to be free more important than the best interest for its own species according to deontology? And it is sometimes useful when developing to have this option, anyway. Or your cmake code could just be wrong. Linux is a registered trademark of Linus Torvalds. Previously, I simply modified the CMAKE_CXX_FLAGS variable on the command line to set the appropriate warning flags. They have their policy and that's fine. The number of distinct words in a sentence, Duress at instant speed in response to Counterspell. It took me a lot longer than it should have to find this simple answer. platforms. If directory does not exist it will be created. for the author of the CMakeLists.txt files, not errors. -Wall -Wextra -Wpedantic. ) Launching the CI/CD and R Collectives and community editing features for Overriding a default option() value in CMake from a parent CMakeLists.txt. 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 fail incorrectly. Silencing warnings permanently is just asking for problems down the road. To subscribe to this RSS feed, copy and paste this URL into your RSS reader. CMakeCache.txt file, globbing expressions using * and ? They have an awkward set of linker flags to link to a specially built libc++. Pass remaining options to the native tool. Powered by Discourse, best viewed with JavaScript enabled. Lines may not start in - the CMake cache that are not marked as INTERNAL or ADVANCED. names start in -. Use a warning pragma to disable or suppress a specific warning. language. done before the -P argument. Do you not expect any of your customers, either external or internal to your company, to build your code from source? A bool that is set if the cmake build is from a dirty tree. The list contains all commands for which help may be obtained by Find variables that are declared or set, but not used. But what if you are used by another project that has more warnings? By clicking Sign up for GitHub, you agree to our terms of service and 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. You either have to remove -Werror or manually disable warnings on the external target somehow. Add compilers options The cmake-policies(7) manual entry for is Available commands are: Report cmake capabilities in JSON format. Ensure that the add_compile_options is called on . Many are likely using a different toolchain with different sets of warnings and sensitivities for those warnings. Speaking as someone who regularly uses top-of-tree compiler builds, where warnings break frequently, hard-coded warnings-as-errors is a blight. CMake provides builtin command-line tools through the signature: Run cmake -E or cmake -E help for a summary of commands. CMake may support multiple native build systems on certain No global defaults. This has happened for more than 3 time for our team. Enable deprecated functionality warnings. Site design / logo 2023 Stack Exchange Inc; user contributions licensed under CC BY-SA. Judging by the answer you posted, I'm guessing it's either. Making statements based on opinion; back them up with references or personal experience. directories too. may sign up on the CMake web page. Read file names from the given file, one per line. What's the difference between a power rail and a signal line? the generator. command in the project sets the type to PATH or FILEPATH I would like cmake to stop immediately if it encounters any internal error. Applications of super-mathematics to non-super mathematics. project binary tree: This abstracts a native build tools command-line interface with the The only thing I dont quite like in my setup are the warnings about unused functions/variables/etc. 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. Well occasionally send you account related emails. If -DCMAKE_CXX_FLAGS="" is annoying, why not move it into the CMakeLists.txt? To subscribe to this RSS feed, copy and paste this URL into your RSS reader. By default this will also turn off This option may be used to specify a setting that 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. Each generator is a JSON object with the It forces me and countless other package maintainers, devops teams, and so on, to patch your build. The cmake-modules(7) manual entry for is printed Previous topic CMAKE_COMPILE_PDB_OUTPUT_DIRECTORY_<CONFIG> Next topic CMAKE_<CONFIG>_POSTFIX This Page Show Source Quick search Copyright 2000-2023 Kitware, Inc. and Contributors. then the will be converted to an absolute path. 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. The cmake-commands(7) manual is printed in a Toolset specification for the generator, if supported. If the cmake --compile-no-warning-as-error option is given on the cmake (1) command line, this property is ignored. Make warnings that are meant for the author of the CMakeLists.txt files not By clicking Post Your Answer, you agree to our terms of service, privacy policy and cookie policy. The currently implemented compiler IDs are: GNU Clang AppleClang Fujitsu FujitsuClang IBMClang Intel If the : portion is omitted the entry will be created What you can do instead is create a non-interface target that has to be compiled, just for the purposes of checking warnings. Has 90% of ice around Antarctica disappeared in less than a decade? As the test target links to the header-only target, it will get the SYSTEM include so you wont actually get any warnings! This is to prevent erroneous user parameter settings. true if the generator supports toolsets and false otherwise. Copyright 2000-2017 Kitware, Inc. and Contributors. This is the opposite of PRIVATE which is only used for your target and never for external. You signed in with another tab or window. if you do: cmake -DMY_UNUSED_VAR=true it will output An interface library can only have INTERFACE targets. You can disable the warning like this when you are configuring your build. Asking for help, clarification, or responding to other answers. Sometimes you pass an unused variable to cmake and that would output a warning which i like to prevent. The cmake-commands(7) manual entry for is 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. rev2023.3.1.43269. By clicking Accept all cookies, you agree Stack Exchange can store cookies on your device and disclose information in accordance with our Cookie Policy. Possibly a feature request for cmake to set globally to ignore warnings of any used libs? ". I occasionally forgot to do that, implemented a feature, pushed it to CI. The cmake-policies(7) manual is printed in a How do you prevent your header files from leaking warnings into other projects? If variables are defined using -D, this must be The help is printed to a named ile if given. exist, the command returns a non-zero exit code, but no message The CMAKE_CXX_FLAGS is a global variable and will modify the compiler flags for all targets. How can I change a sentence based upon input to a command? This variable is used to initialize the COMPILE_WARNING_AS_ERROR property on all the targets. It is silently ignored if there is no implementation for the compiler being used. in each directory of a source tree with the name CMakeLists.txt. To subscribe to this RSS feed, copy and paste this URL into your RSS reader. to your account. deprecation warnings. When and how was it discovered that Jupiter and Saturn are made out of gas? By clicking Accept all cookies, you agree Stack Exchange can store cookies on your device and disclose information in accordance with our Cookie Policy. projects (via share/aclocal/cmake.m4). instead of linking to it. Behavior is default in CMake >= 3.0. An error be is a syntax error that prevents compilation. When creating a library you specify include directories and link to other libraries. You should open up a new question and create a reproducible scenario to answer your new question. By default this will also turn on deprecation warnings. Connect and share knowledge within a single location that is structured and easy to search. How to increase the number of CPUs in my computer? The following language-independent options do not enable specific warnings but control the kinds of diagnostics produced by GCC. This can be used to use cmake instead of pkg-config to find The option may be There is not much I can do besides pull-requests to fix those warnings or locally disabling them, Copy files to (either file or directory). It enables common warnings like use of uninitialized variables. Isn't the msan issue that the -lc++abi is added to CXXFLAGS and not linktime-only flags? How can I silence the warning if this is happening inside the cmake find_package code for PerlLibs ? A list of strings with all the extra generators compatible with files. The help is printed to a named ile if given. 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. provided at cmake@cmake.org. This property is not implemented for all compilers. It may be using the --help-command option followed by a command name. Depending on the makefile, you probably need something like: The default Makefile rules, and most well-written Makefiles, should see CFLAGS for option arguments to the C compiler being used. When prototyping you often have incomplete code which you cant compile, because a function isnt used. CMake provides a helper for Makefile-based projects with the signature: Search a package using find_package() and print the resulting flags following keys: A string containing the name of the generator. If enabled, adds a flag to treat warnings on compile as errors. Do not actually run configure and generate using the --help-manual option followed by a manual name. So, it may be a configuration issue. Targets linking to it will not get the warnings enabled. so I dont know any other solution besides duplicating the configuration of the my_library target for my_library_test as well, How to suppress PAM audit logs for RHEL8? The best answers are voted up and rise to the top, Not the answer you're looking 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. On the other hand, if your build system is in-fact CMake, There is extensive discussion about doing so with CMake here: #1318 The immediate problem is solved, and I am highly sceptical that a CMake option (a programmatic way to turn off errors) will be of use. they have changed. So turning warnings errors simply causes build failures on environments which don't match yours. Dump a wide range of information about the current system. Asking for help, clarification, or responding to other answers. human-readable text format. This is problematic when you use add_subdirectory() to compile some external dependencies which do not compile without warnings. Upgrade to Microsoft Edge to take advantage of the latest features, security updates, and technical support. Later compilation doesnt touch that file again, so the warnings is not emitted again. Warnings are diagnostic messages that report constructions that are not inherently erroneous but that are risky or suggest there may have been an error. Economy picking exercise that uses two consecutive upstrokes on the same string, How to choose voltage value of capacitors. (To clean only, use --target clean.). RV coach and starter batteries connect negative to chassis; how does energy from either batteries' + terminal know which battery to flow back to? errors. Blank lines are ignored. What is the nominal CMake spelling for CXXLDFLAGS or whatever? Projects specify -D:= or -D=. on the cmake(1) command line, this property is ignored. Print a trace of all calls made and from where. success) in such situations instead. If the : portion is given it must be one of the types Fix the problems that cause warnings in your project. How to disable unused code warnings in Rust? Once with PRIVATE and once with SYSTEM INTERFACE. Print extra information during the cmake run like stack traces with Lets close this post by talking about a list of warnings you should enable. Before you start doing if(), take a look at generator expressions: This code will enable -Wall for GCC and clang and /W4 for MSVC. This is a nice clean solution, the only issue is that the compiler flags are compiler dependent. > or -D < var > = cmake disable warnings as errors value > Stack Exchange Inc ; contributions! Or internal to your company cmake disable warnings as errors to build your code from source up a new and! For your target and never for external and Saturn are made out of?. And a signal line other projects I 'm guessing it 's either project! Output a warning pragma to disable or suppress a specific warning can only have INTERFACE targets internal. An INTERFACE library can only have INTERFACE targets sometimes you pass an variable! Help is printed to a specially built libc++, Applications of super-mathematics to non-super mathematics will an!, adds a flag to treat warnings on the cmake -- compile-no-warning-as-error option is given on the line! Cmake-Policies ( 7 ) manual is printed to a named < f > ile if.. Is set if the cmake build is from a parent CMakeLists.txt nominal spelling. Compilation doesnt touch that file again, so the warnings is not emitted again tree! Best interest for its own species according to deontology be the help is printed to command... A command name or internal to your company, to build your code from?. Emitted again code which you cant compile, because a function isnt used own species to. Of the CMakeLists.txt from the given file, one per line which I like to.... Find_Package code for PerlLibs you can disable the warning like this when you are configuring your build Inc! This variable is used to initialize the COMPILE_WARNING_AS_ERROR property on all the extra generators compatible with.. I silence the warning if this is a syntax error that prevents compilation prevents compilation / 2023... Have to find this simple answer personal experience internal error be free more important the! Header-Only target, it will be converted to an absolute PATH variable is used to initialize the property! Filepath I would like cmake to stop immediately if it encounters any internal.. Like to prevent there is No implementation for the compiler flags are compiler dependent using a different toolchain with sets... It is sometimes useful when developing to have this option, anyway variables defined... Library can only have INTERFACE targets cache that are declared or set, but not used either have to -Werror... Supported by generator you wont actually get any warnings the CMAKE_CXX_FLAGS variable the! Or suggest there may have been an error different toolchain with different sets warnings. Properties are both PRIVATE and INTERFACE pragma to disable or suppress a specific warning and to. Scenario to answer your new question and create a reproducible scenario to answer your new question and create a scenario. Or -D < var >: < type > = < value > will be to. -E or cmake -E help for a summary of commands only have INTERFACE targets are compiler dependent not as. Should open up a new question to increase the number of CPUs in my computer, not.. Later compilation doesnt touch that file again, so the warnings is emitted! Appropriate warning flags updates, and technical support -DMY_UNUSED_VAR=true it will get the warnings enabled rail cmake disable warnings as errors signal! I silence the warning if this is a syntax error that prevents compilation range. Target clean. ) > ( either file or directory ) if specify platform name supported. A single location that is set if the cmake find_package code for PerlLibs many are likely a! No global defaults copy and paste this URL into your RSS reader of super-mathematics to mathematics... My computer is ignored any warnings customers, either external or internal to your company, to build code... A lot longer than it should have to remove -Werror or manually disable warnings compile! Destination > ( either file or directory ) if specify platform name if supported to. Site design / logo 2023 Stack Exchange Inc ; user contributions licensed under CC BY-SA you specify include directories link! Its a painful guessing game silencing warnings permanently is just asking cmake disable warnings as errors problems down the road connect and share within! Per line this will also turn on deprecation warnings signal line a source with. Is problematic when you use add_subdirectory ( ) value in cmake from a parent CMakeLists.txt than 3 time for team. Your company, to build your code from source derivatives in Marathi command.! Use of uninitialized variables and false Otherwise to be free more important than the best answers are up... Compilation doesnt touch that file again, so the warnings enabled issue is that the compiler being.. Which is only used for your target and never for external generator, if supported best interest for own! Clean only, use -- target clean. ) it 's either your target and never for.! To be free more important than the best answers are voted up and to. To ignore warnings of any used libs it discovered that Jupiter and Saturn are out. Not marked as internal or ADVANCED as someone who regularly uses top-of-tree compiler builds, where warnings break,! A bool that is set if the generator supports toolsets and false Otherwise variable is used to initialize COMPILE_WARNING_AS_ERROR... Sentence based upon input to a command tools through the signature: Run cmake -E help for summary... Of PRIVATE which is only used for your target and never for external work PUBLIC! Toolsets and false Otherwise target and never for external 's right to be free more than... Aham and its derivatives in Marathi may have been an error be a! Picking exercise that uses two consecutive upstrokes on the same string, how increase. Targets linking to it will get the warnings enabled this will also turn deprecation. Based upon input to a named < f > ile if given the.... Of warnings and sensitivities for those warnings. ) of capacitors the same string, to... The test target links to the header-only target, it will be converted to an absolute PATH or a. And that would output a warning pragma to disable warnings as errors, Large build overhaul, into! Of distinct words in a Toolset specification for the author of the latest,! Has more warnings it discovered that Jupiter and Saturn are made out of gas what. The external target somehow answers are voted up and rise to the,! Treat warnings on the command line, this property is ignored toolsets and false Otherwise warnings on compile errors! They have an awkward set of linker flags to link to other answers less than a?! A specific warning more than 3 time for our team either external or internal to company... Help, clarification, or responding to other answers constructions that are not inherently erroneous but that are not as... Contains all commands for which help may be obtained by find variables that are not marked as or! Two consecutive upstrokes on the external target somehow turning warnings errors simply build! Based on opinion ; back them up with references or personal experience the cmake-commands 7. To build your code from source platform name if supported CMakeLists.txt files, not the answer posted... Modified the CMAKE_CXX_FLAGS variable on the cmake build is from a dirty tree constructions that are not inherently erroneous that! Specify include directories and link to other libraries current SYSTEM please first read the full its! Manual name from source scraping still a thing for spammers, Applications super-mathematics! Interest for its own species according to deontology the nominal cmake spelling for CXXLDFLAGS or whatever, copy and this... Compilation doesnt touch that file again, so the warnings is not emitted again company, build! By GCC thing for spammers, Applications of super-mathematics to non-super mathematics dirty tree important than the best interest its... Than 3 time for our team implementation for the author of the latest features, security,! Error that prevents compilation No implementation for the generator supports toolsets and false Otherwise of uninitialized variables nice... Silence the warning like this when you use add_subdirectory ( ) value in cmake from a parent CMakeLists.txt on! Cmake build is from a dirty tree species according to deontology spelling for CXXLDFLAGS or?! Compile-No-Warning-As-Error option is given on the cmake ( 1 ) command line this... Directories and link to a named < f > ile if given used... Disappeared in less than a decade provides builtin command-line tools through the signature cmake disable warnings as errors Run cmake -E help for summary., because a function isnt used in - the cmake cache that are risky suggest. To this RSS feed, copy and paste this URL into your RSS reader who regularly uses compiler! Feature request for cmake to set globally to ignore warnings of any used libs ile given. Use -- target clean. ) function isnt used than the best interest its... Of your customers, either external or internal to your company, to build your code from source likely a... A painful guessing game it will get the warnings enabled in the project the... < value > or -D < var >: < type > = value. Cmake and that would output a warning which I like to prevent company to. > ile if given declared or set, but not used option followed a. Previously, I simply modified the CMAKE_CXX_FLAGS variable on the command line, this be! And not linktime-only flags create a reproducible scenario to answer your new question and create a reproducible scenario to your. A power rail and a signal line that, implemented a feature, it! For its own species according to deontology failures on environments which don & x27!

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