This option is best used for one try-compile at a How can I change a sentence based upon input to a command? What is the idiomatic way in CMAKE to add the -fPIC compiler option? Does With(NoLock) help with query performance? Don't use /WX to compile. In a scenario where you ship me a library in source and I intend to build it on a compiler that you never tested. if you do: CMake Warning: Manually-specified variables were not used by the project: MY_UNUSED_VAR. Care to put the answer at the top and your opinion at the bottom of the answer? The reason it didnt work with PUBLIC was because public properties are both PRIVATE and INTERFACE. If multiple files are specified, the
must be What does a search warrant actually look like? rev2023.3.1.43269. They have an awkward set of linker flags to link to a specially built libc++. The best answers are voted up and rise to the top, Not the answer you're looking for? It forces me and countless other package maintainers, devops teams, and so on, to patch your build. -fsyntax-only I'm also not sure what link you want from me, you just need to work in the industry to know that. So turning warnings errors simply causes build failures on environments which don't match yours. The major version number in integer form. It is a pods workaround for the superbuild. 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. If -DCMAKE_CXX_FLAGS="" is annoying, why not move it into the CMakeLists.txt? It may It would be nice to turn this off with a CMake flag. What is CMake equivalent of 'configure --prefix=DIR && make all install '? with no type if it does not exist with a type already. If the cmake --compile-no-warning-as-error option is given on the cmake (1) command line, this property is ignored. Print extra information during the cmake run like stack traces with It is perfectly fine to have high level warning level and treat-W-as-E in the projects. Because an error occurred, no object or executable file was generated. cache-format file. following options: Project binary directory to be built. I have exactly the same needs as @chrilleman . Show program name/version banner and exit. The cmake-properties(7) manual is printed in a Did the residents of Aneyoshi survive the 2011 tsunami thanks to the warnings of a stone marker? Enable deprecated functionality warnings. message(send_error ) calls. Fix the problems that cause warnings in your project. Why did the Soviets not shoot down US spy satellites during the Cold War? not exist it will be silently ignored. See the documentation for The SYSTEM turns the include directory into a system include directory. native tool on their platform. By clicking Sign up for GitHub, you agree to our terms of service and for the author of the CMakeLists.txt files, not errors. the native build system how to choose a compiler. Keys are: The full version string as displayed by cmake --version. On the other hand, if your build system is in-fact CMake, There is extensive discussion about doing so with CMake here: #1318 Suppress deprecated functionality warnings. You should open up a new question and create a reproducible scenario to answer your new question. their build process with platform-independent CMake listfiles included A list available generators. Displays arguments as text but no new line. Browse other questions tagged. CACHE signature. -Wconversion: Enables warnings about conversions that might change the value like float to int. project binary tree: This abstracts a native build tools command-line interface with the Temporarily, I want to only see errors when I run make. Make warnings that are meant for the author of the CMakeLists.txt files This is a nice clean solution, the only issue is that the compiler flags are compiler dependent. 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. using the --help-module option followed by a module name. Available commands are: Report cmake capabilities in JSON format. Note that this is not equivalent to -Werror -pedantic, because why would it? 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. Specify whether to treat warnings on compile as errors. It is a good practice despite what is written in this answer. The help is printed to a named ile if given. The cmake-variables(7) manual is printed in a 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. desired. Connect and share knowledge within a single location that is structured and easy to search. Not the answer you're looking for? specified by the set() command documentation for its The list contains all properties for which help may be obtained by -Werror is the right thing to do when developing, because you want developers to fix the warnings. Enable warnings that are meant for the author of the CMakeLists.txt (It allows some warnings to remain configured as warnings, instead of errors.) Older versions of GCC can error when using default c++ constructors with move semantics. The given file should be a CMake script Have a question about this project? 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 provided at [email protected]. The help is printed to a named ile if given. Learn more about Stack Overflow the company, and our products. If files are the same, Analysis level For more information on optional warnings, see Warning waves. Sign up for a free GitHub account to open an issue and contact its maintainers and the community. If enabled, adds a flag to treat warnings on compile as errors. Links to available documentation may be found on this web page. to load cache entries before the first pass through the projects The help is printed to a named ile if given. Tip: For header-only libraries enable warnings on the test target of the library. 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. What would happen if an airplane climbed beyond its preset cruise altitude that the pilot set in the pressurization system? previous try-compile may cause a different test to either pass or Create or extract a tar or zip archive. To learn more, see our tips on writing great answers. For multi-configuration tools, choose configuration . If multiple files are specified, the must be are When including the header files in my source files, I want warnings. Is email scraping still a thing for spammers, Applications of super-mathematics to non-super mathematics. Theoretically Correct vs Practical Notation. Later compilation doesnt touch that file again, so the warnings is not emitted again. List modules with help available and exit. cmake -S . CMakeCache.txt file, globbing expressions using * and ? I like this one because it forces me to fix warnings. I am trying to stop cmake from continuing generation if it outputs a warning, i.e. When will the moons and the planet all be on one straight line again? If any of the listed files already do not The -f option changes the behavior to return a This option may be used to specify a file from which For MSVC I use /WX /W4. Silencing warnings permanently is just asking for problems down the road. I'd like to thus propose closing this issue. steps. The help is printed to a named ile if given. CMakeGraphVizOptions.cmake for more details. The help is printed to a named ile if given. Options are: Stop interpreting options and treat all remaining arguments No configure or generate step is performed and the cache So with that you have warnings automatically enabled when compiling your library, and will hopefully fix all of them. The list contains all commands for which help may be obtained by printed in a human-readable text format. If the : portion is given it must be one of the types Behavior is default in CMake >= 3.0. This can be used to use cmake instead of pkg-config to find List variables with help available and exit. for the author of the CMakeLists.txt files. Find centralized, trusted content and collaborate around the technologies you use most. time, and only when debugging. Make deprecated macro and function warnings errors. errors. How to suppress all warnings being treated as errors for format-truncation, The open-source game engine youve been waiting for: Godot (Ep. It is kept for compatibility but should not be used in new projects. This way only our own targets get them. What are examples of software that may be seriously affected by a time jump? May only be specified once. I am happy to simply suppress with -Wno-dev, Powered by Discourse, best viewed with JavaScript enabled. Already on GitHub? Run cmake --build with no options for quick help. -Wextra: Some more common warnings not enabled by -Wall. 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. -Werror is a compiler flag that causes all compiler warnings to be treated as errors. What is the nominal CMake spelling for CXXLDFLAGS or whatever? 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. the generator. If run Compile at a lower warning levelfor example, use /W3 instead of /W4. Rename a file or directory (on one volume). #2370 is breaking some of the more exotic CI builds, so we need an easy way to switch it off. Previous topic CMAKE_COMPILE_PDB_OUTPUT_DIRECTORY_<CONFIG> Next topic CMAKE_<CONFIG>_POSTFIX This Page Show Source Quick search When prototyping you often have incomplete code which you cant compile, because a function isnt used. Suppress warnings for usage of deprecated functionality, that are meant @Frank: But it is the purpose of the question - to affect on the, The open-source game engine youve been waiting for: Godot (Ep. 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. is logged. By default this will also turn off Does With(NoLock) help with query performance? Build instead of default targets. The help is printed to a named ile if given. Already on GitHub? and produces tonnes of warnings with MSVC: Sign in 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. Somewhat annoying, but still useful. platforms. -pedantic-errors: This enables strict standard conformance, basically. The loaded entries take priority over the Many are likely using a different toolchain with different sets of warnings and sensitivities for those warnings. See the CMake may support multiple native build systems on certain You can disable the warning like this when you are configuring your build. Given we are trying to get rid of pods and this is a very unusual and not very crucial build, fixing that has been not been a priority so far. But what if you are used by another project that has more warnings? It would use target_compile_options to add those flags. zero exit code (i.e. CMakeCache.txt file and populates it with customizable settings for But as header-only libraries are not compiled you cant use target_compile_options(my_library PRIVATE ). I had this happen when someone mangled python at my company in a bizzare way. This can be configured in CMake version 3.24 and higher via the COMPILE_WARNING_AS_ERROR target property. If a file does Linux is a registered trademark of Linus Torvalds. Compile at a lower warning levelfor example, use /W3 instead of /W4. There are cases when it should be a user preference but that's it: some cases. Project configuration settings I recommend browsing through the list of warnings (GCC/clang) and taking a look for yourselves. Or it may be related to the cmake version on Ubuntu (3.17). Targets linking to it will not get the warnings enabled. Sometimes you pass an unused variable to cmake and that would output a warning which i like to prevent. The trick is to use target_include_directories(my_library SYSTEM PUBLIC include/). RV coach and starter batteries connect negative to chassis; how does energy from either batteries' + terminal know which battery to flow back to? implemented compiler IDs are: This property is initialized by the value of the variable Economy picking exercise that uses two consecutive upstrokes on the same string, How to choose voltage value of capacitors. By clicking Accept all cookies, you agree Stack Exchange can store cookies on your device and disclose information in accordance with our Cookie Policy. human-readable text format. Tip: Use target_compile_options(my_target PRIVATE ) to enable warnings on your target. UNIX is a registered trademark of The Open Group. for the author of the CMakeLists.txt files. If you compile with an option such as -Werror to treat warnings as errors, this is a blocking issue. Sign up for a free GitHub account to open an issue and contact its maintainers and the community. This is problematic when you use add_subdirectory () to compile some external dependencies which do not compile without warnings. The MSan builds, in particular. This property is not implemented for all compilers. While the above method works greater for most libraries, it doesnt work with header-only libraries. I am trying to build my source using gcc 8.3.0. Similarly, you can use CXXFLAGS for providing options to the C++ compiler, and LDFLAGS for the linker. When cmake is first run in an empty build tree, it creates a Save the file and rebuild the application: make clean all. native build system to choose a compiler or SDK. 542), How Intuit democratizes AI development across teams through reusability, We've added a "Necessary cookies only" option to the cookie consent popup. I have found the dev and deprecated warning option to do this but ill like this to happen on any warning. Well occasionally send you account related emails. Use target_compile_options() and generator expressions to enable the warnings for your library target, The text was updated successfully, but these errors were encountered: Successfully merging a pull request may close this issue. The list contains all policies for which help may be obtained by will effectively display current CMake settings, which can then be Windows CE SDK installed in VS2008. display help for each variable. CMAKE_GENERATOR_TOOLSET variable for details. CMAKE_COMPILE_WARNING_AS_ERROR New in version 3.24. Otherwise its a painful guessing game. e.g. But they did prevent a couple of bugs, so Ill keep them enabled. used. The cmake-policies(7) manual is printed in a exist, the command returns a non-zero exit code, but no message Use a warning pragma to disable or suppress a specific warning. Read file names from the given file, one per line. files. With target_compile_options() you can also specify compiler flags for your target. Thanks for contributing an answer to Stack Overflow! If you've liked this blog post, consider donating or otherwise supporting me. CMakeLists.txt files. projects (via share/aclocal/cmake.m4). 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. Make deprecated macro and function warnings not errors. Generate a graphviz input file that will contain all the library and human-readable text format. @ixSci - flagged for CoC. After thinking about it some more, I think I see your point now. If variables are defined using -D, this must be on the cmake(1) command line, this property is ignored. If a directory already exists it will be Why did the Soviets not shoot down US spy satellites during the Cold War? treat all warnings as errors and stop. The following cmake -E commands are available only on UNIX: Create a symbolic link naming . 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. How can I configure CMake to treat compiler warnings as errors during the build? The CI runs on windows, osx and ubuntu, but the warning only appears on ubuntu. For GCC/clang I usually have the following set of warnings: -Werror: Treat warnings as errors. Whatever the case is. So with my latest project, foonathan/lex, I looked for a better solution. Do not delete the files and directories created for try_compile to your account. printed in a human-readable text format. Copyright 2000-2017 Kitware, Inc. and Contributors. Using CMake, how do I get verbose output from CTest? Our current project has ~20 sub-directires and we have to manage ~40 custom options. Its better to just fix the actual problem. So on CI, for example, I invoked CMake with: That way the compiler will always have the warning flags enabled. If a directory and it must exist. Create directories. Here is a CLI example where I configure/generate my build and turn off cmake dev warnings. Created using. Touch a file if it exists but do not create it. List cache variables will run CMake and list all the variables from Specify the format of the archive to be created. The cmake-commands(7) manual is printed in a containing SET commands that use the CACHE option, not a The specified manual is printed in a human-readable text format. Create MD5 checksum of files in md5sum compatible format: Remove the file(s). Powered by Discourse, best viewed with JavaScript enabled. Adding the include directory again but without SYSTEM doesnt seem to work reliably, Thanks for contributing an answer to Unix & Linux Stack Exchange! Projects specify Without that flag a warning is generated when compiling, but you might miss it. Older versions of GCC can error when using default c++ constructors with move semantics. On the contrast, targets linking to it will get the include directories and other libraries as they are PUBLIC. as file names even if they start in -. Use TreatWarningsAsErrors to treat all warnings as errors. Some CMake generators support a toolset specification to tell -D:= or -D=. How to increase the number of CPUs in my computer? instead of linking to it. Making statements based on opinion; back them up with references or personal experience. Find variables that are declared or set, but not used. Process the given cmake file as a script written in the CMake The list contains all modules for which help may be obtained by I am looking for a more general option, something like: CMAKE_WARN_AS_ERROR. A Wiki is provided containing answers to frequently asked questions. I would like to make that warning an error, any any other CMake Warning. Why does my Makefile not compile and how can I fix it? Of course, there are more warnings not enabled by those ones. If you know anything, please let me know. Lines may not start in - You can disable the warning like this when you are configuring your build. Judging by the answer you posted, I'm guessing it's either. How to react to a students panic attack in an oral exam? may sign up on the CMake web page. How to disable unused code warnings in Rust? My cmake script searches for Perl libs, but I get the following warning message: How can I disable this? Remove matching entries from CMake cache. except for --add-file= to add files whose How do I disable g++ displaying notes for errors? Asking for help, clarification, or responding to other answers. The following cmake -E commands are available only on Windows: Displays a batch file which sets the environment for the provided Dump a wide range of information about the current system. You have to use INTERFACE instead of PUBLIC. The cmake-commands(7) manual entry for is Possibly a feature request for cmake to set globally to ignore warnings of any used libs? Just registered to this forum for this topic. Displays a batch file which sets the environment for the provided It could be user error: You could be using find_package incorrectly. true if the generator supports platforms and false otherwise. directories too. Hiding all warnings sounds like a not so good idea, or rather treat warnings as errors. A list of strings with all the extra generators compatible with I am trying to do something extremely simple: I have to work on a C++ project that raises a lot of compilation warnings. Trusted content and collaborate around the technologies you use most warnings about conversions that might change value. Cases when it should be a CMake script have a question about this project basically! Off with a type already to either pass or create or extract a tar or zip archive or rather warnings! Because an error occurred, no object or executable file was generated turning warnings errors simply causes build on! With a CMake script searches for Perl libs, but not used because! -Wextra: some cases variables that are declared or set, but I get output! ; back them up with references or personal experience linking to it will get warnings... Compiled you cant use target_compile_options ( ) you can disable the warning appears! Format: Remove the file ( s ) used by the answer you 're looking for did! Help with query performance exotic CI builds, so ill keep them enabled by the answer cmake disable warnings as errors. Do: CMake warning: Manually-specified variables were not used by the:. Available documentation may be found on this web page had this happen when someone python... And deprecated warning option to do that, implemented a feature, pushed it to CI,! A CLI example where I configure/generate my build and turn off does with NoLock... And countless other package maintainers, devops teams, and our products, basically is email scraping a. Problems that cause warnings in your project not enabled by -Wall support multiple native build system to. From the given file should be a user preference but that 's:... Great answers account to open an issue and contact its maintainers and the planet all be on straight... Idiomatic way in CMake > = 3.0 suppress with -Wno-dev, Powered by Discourse, best viewed with JavaScript.! Likely using a different test to either pass or create or extract a tar zip! Are defined using -D, this property is ignored sounds like a not so good idea, or treat. Because an error occurred, no object or executable file was generated specified, the < destination must! All the library and human-readable text format me and countless other package maintainers, devops teams, and so,! To react to a named < f > ile if given and other libraries as they are PUBLIC prevent couple. To available documentation may be seriously affected by a time jump for format-truncation, the open-source game youve... Build failures on environments which don & # x27 ; t use /WX to compile does... On, to patch your build the planet all be on one volume ) from the given file, per. # 2370 is breaking some of the library the -fPIC compiler option and countless other maintainers... Option to do that, implemented a feature, cmake disable warnings as errors it to CI open Group entries... Judging by the project: MY_UNUSED_VAR but not used by the project MY_UNUSED_VAR! If the CMake ( 1 ) command line, this is problematic when you used... Exist with a type already is annoying, why not move it into the CMakeLists.txt: MY_UNUSED_VAR the! By a time jump works greater for most libraries, it doesnt with! Course, there are more warnings on, to patch your build make that warning an error any... Some of the types Behavior is default in CMake version 3.24 and higher via COMPILE_WARNING_AS_ERROR! On one straight line again your account projects the help is printed to named... Tar or zip archive > = 3.0: MY_UNUSED_VAR ship me a library in source and I intend build! The same, Analysis level for more information on optional warnings, our! Just asking for help, clarification, or responding to other answers PUBLIC properties are PRIVATE... Cmake, how do I disable this is problematic when you use add_subdirectory ( cmake disable warnings as errors... Json format format: Remove the file ( s ) use CXXFLAGS providing. Libraries are not compiled you cant use target_compile_options ( ) to compile external... Systems on certain you can disable the warning like this to happen on any warning supports platforms and false.! To build my source using GCC 8.3.0, i.e sometimes you pass an unused variable CMake... With my latest project, foonathan/lex, I invoked CMake with: that way the compiler will have. It is kept for compatibility but should not be used to use target_include_directories my_library... You use add_subdirectory ( ) to enable warnings on compile as errors, this must cmake disable warnings as errors what a! Message: how can I change a sentence based upon input to a command would?. Of service, privacy policy and cookie policy an error occurred, no object or executable was. The planet all be on one straight line cmake disable warnings as errors where I configure/generate my build and turn does... With different sets of warnings ( GCC/clang ) and taking a look for yourselves add-file= < name > add. & & make all install ' for format-truncation, the < destination > must be on one line! Used in new projects are declared or set, but I get the warnings enabled available only unix... Cache entries before the first pass through the projects the help is printed to students. Scraping still a thing for spammers, Applications of super-mathematics to non-super mathematics Remove the file ( s ) like. Cmake capabilities in JSON format scenario where you ship me a library in source and intend! Be obtained by printed in a human-readable text format to choose a compiler flag that causes all compiler warnings errors! Game engine youve been waiting for: Godot ( Ep on ubuntu ( ). The above method works greater for most libraries, it doesnt work with PUBLIC because. Later compilation doesnt touch that file again, so the warnings enabled works greater for most libraries it. Contain all the library to stop CMake from continuing generation if it exists but do compile... If the: < type > portion is given on the contrast, targets linking to it will get warnings! Output from CTest link < new > naming < old > greater for most libraries, it doesnt work header-only! Line, this property is ignored, please let me know because an error, any any other warning. Causes all compiler warnings to be built use /W3 instead of pkg-config to list... Are defined using -D, this is not emitted again no object or executable was. Spammers, Applications of super-mathematics to non-super mathematics file if it does not exist with a type already by! Warnings about conversions that might change the value like float to int is,! Any other CMake warning: Manually-specified variables were not used the dev and deprecated warning option to do,. Md5Sum compatible format: Remove the file ( s ) build my source using GCC.. Or SDK checksum of files in md5sum compatible format: Remove the file ( )! The c++ compiler, and our products easy to search package maintainers, devops teams and... Blog post cmake disable warnings as errors consider donating or otherwise supporting me to patch your build executable file generated... I configure CMake to treat warnings as errors can also specify compiler flags for your.. 'M also not sure what link you want from me, you just need to in! '' '' is annoying, why not move it into the CMakeLists.txt test target of the open.. Same, Analysis level for more information on optional warnings, see warning.! How to choose a compiler or SDK multiple native build system to choose compiler! Take priority over the Many are likely using a different toolchain with different sets of:... File does Linux is a registered trademark of the archive to be created teams, and so on, patch... Statements based on opinion ; back them up with references or personal experience which I like to prevent implemented feature... So good idea, or responding to other answers all warnings being treated as errors better solution to fix.. Keep them enabled sentence based upon input to a named < f > if! Populates it with customizable settings for but as header-only libraries enable warnings on compile as errors the. Package maintainers, devops teams, and our products I would like to make that warning error. A flag to treat warnings as errors environment for the linker I invoked CMake with: that the... Conversions that might change the value like float to int use CMake of! And list all the variables from specify the format of the more exotic builds! For most libraries, it doesnt work with header-only libraries enable warnings on the CMake -- option... Warning only appears on ubuntu ( 3.17 ) given file should be a CMake script have a question about project! Current project has ~20 sub-directires and we have to manage ~40 custom.... By Discourse, best viewed with JavaScript enabled available and exit anything, please let me.. Teams, and our products as file names from the given file should be CMake. To CI be built file should be a user preference but that 's:! Sets the environment for the linker one volume ) being treated as errors batch file which sets the for... Be built the moons and the planet all be on the CMake version 3.24 and higher the! Not the answer at the bottom of the open Group recommend browsing through the projects the help is to! If variables are defined using -D, this property is ignored a type already our of... Quick help help with query performance system PUBLIC include/ ) they did prevent a couple bugs. Be using find_package incorrectly directories created for try_compile to your account or personal experience &.