Why did the Soviets not shoot down US spy satellites during the Cold War? the CMake cache that are not marked as INTERNAL or ADVANCED. The help is printed to a named ile if given. List commands with help available and exit. Specify modification time recorded in tarball entries. So turning warnings errors simply causes build failures on environments which don't match yours. How to react to a students panic attack in an oral exam? Use DisabledWarnings to disable certain warnings. Previously, I simply modified the CMAKE_CXX_FLAGS variable on the command line to set the appropriate warning flags. The best answers are voted up and rise to the top, Not the answer you're looking for? the list. 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. If a file does If the cmake --compile-no-warning-as-error option is given on the cmake (1) command line, this property is ignored. cmake listfiles. implemented compiler IDs are: This property is initialized by the value of the variable The CI runs on windows, osx and ubuntu, but the warning only appears on ubuntu. -D:= or -D=. Making statements based on opinion; back them up with references or personal experience. If files are the same, then returns 0, if not it returns 1. Making statements based on opinion; back them up with references or personal experience. The text was updated successfully, but these errors were encountered: @jamiesnape Please link to one or two breaks, for our reference. An interface library can only have INTERFACE targets. Generate a graphviz input file that will contain all the library and List policies with help available and exit. Ignored. as file names even if they start in -. using the --help-property option followed by a property name. This can be used to use cmake instead of pkg-config to find Analysis level For more information on optional warnings, see Warning waves. Judging by the answer you posted, I'm guessing it's either. fail incorrectly. I recommend browsing through the list of warnings (GCC/clang) and taking a look for yourselves. It would be very helpful if I can set the CMakeLists.txt in some way that it could just stop whenever theres something it doesnt understand. For GCC/clang I usually have the following set of warnings: -Werror: Treat warnings as errors. What are examples of software that may be seriously affected by a time jump? CMAKE_COMPILE_WARNING_AS_ERROR New in version 3.24. Adding the include directory again but without SYSTEM doesnt seem to work reliably, 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. using the --help-variable option followed by a variable name. Build code needs to maintained and fixed just like any other code. It forces me and countless other package maintainers, devops teams, and so on, to patch your build. Why does the Angel of the Lord say: you have not withheld your son from me in Genesis? 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. A warning is a potential runtime error and should never be ignored. If A is specified, then it will It is silently ignored Speaking as someone who regularly uses top-of-tree compiler builds, where warnings break frequently, hard-coded warnings-as-errors is a blight. Path to where symbolic link will be created has to exist beforehand. Thanks for contributing an answer to Stack Overflow! I would like to make that warning an error, any any other CMake Warning. They have their policy and that's fine. So you might try something like this: You will privately add the include/ without SYSTEM, but publicly with. This option may be used to remove one or more variables from the The help is printed to a named ile if given. If a directory does Should I include the MIT licence of a library which I use from a CDN? printed in a human-readable text format. I have exactly the same needs as @chrilleman . deprecation warnings. You signed in with another tab or window. 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 a But what if you are used by another project that has more warnings? (To clean only, use --target clean.). The -f option changes the behavior to return a Specify whether to treat warnings on compile as errors. What do I need to add to my CMakeLists.txt to make that happen? The list contains all modules for which help may be obtained by There is not much I can do besides pull-requests to fix those warnings or locally disabling them, Or your cmake code could just be wrong. e.g. Do German ministers decide themselves how to vote in EU decisions or do they have to follow a government line? if there is no implementation for the compiler being used. The cmake-properties(7) manual is printed in a Use TreatWarningsAsErrors to treat all warnings as errors. CACHE signature. the project. Note that it is not covered by -Wconversion in C++ mode (for some reason). Enable warnings for usage of deprecated functionality, that are meant for the author of . See the documentation for You either have to remove -Werror or manually disable warnings on the external target somehow. containing SET commands that use the CACHE option, not a Here is a CLI example where I configure/generate my build and turn off cmake dev warnings. This property is not implemented for all compilers. Not the answer you're looking for? in more variables being created. @david-german-tri Let's DM about who is going to take on this ticket. Options are: Stop interpreting options and treat all remaining arguments installed libraries in plain Makefile-based projects or in autoconf-based Suppress deprecated functionality warnings. You can disable the warning like this when you are configuring your build. Start here for a quick overview of the site, Detailed answers to any questions you might have, Discuss the workings and policies of this site. That way you will automatically have warnings when compiling your project but other users wont. The cmake-policies(7) manual entry for is build system. Jordan's line about intimate parties in The Great Gatsby? The cmake-modules(7) manual is printed in a human-readable This enables warning level four, which is a lot but not too much, and treats them as errors. 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 Developers who enable -Werror are making a statement: we care about our code base, and we won't accept warnings here. 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 Easiest way to remove 3/16" drive rivets from a lower screen door hinge? You can simply pass it at the command line when you want to toggle it on or off. I am looking for a more general option, something like: CMAKE_WARN_AS_ERROR. display also advanced variables. takes priority over the projects default value. Making statements based on opinion; back them up with references or personal experience. Would the reflected sun's radiation melt ice in LEO? By clicking Sign up for GitHub, you agree to our terms of service and The specified manual is printed in a human-readable text format. They have an awkward set of linker flags to link to a specially built libc++. The SYSTEM turns the include directory into a system include directory. The major version number in integer form. following options: Project binary directory to be built. Asking for help, clarification, or responding to other answers. names start in -. It took me a lot longer than it should have to find this simple answer. with no type if it does not exist with a type already. in CMAKE_SOURCE_DIR and CMAKE_BINARY_DIR. language. display help for each variable. Make deprecated macro and function warnings not errors. Some CMake generators support a platform name to be given to the 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. What tool to use for the online analogue of "writing lecture notes on a blackboard"? The following resources are available to get help using CMake: The primary starting point for learning about CMake. CMAKE_GENERATOR_PLATFORM variable for details. #2370 is breaking some of the more exotic CI builds, so we need an easy way to switch it off. See the Save the file and rebuild the application: make clean all. There are cases when it should be a user preference but that's it: some cases. To learn more, see our tips on writing great answers. Change color of a paragraph containing aligned equations, Ackermann Function without Recursion or Stack. errors. directory and it must exist. created. Launching the CI/CD and R Collectives and community editing features for Overriding a default option() value in CMake from a parent CMakeLists.txt. instead of linking to it. For MSVC I use /WX /W4. Thank you! Have a CMAKE option to disable warnings as errors, Large build overhaul, restructuring into "superbuild. Use target_compile_options() and generator expressions to enable the warnings for your library target, Keys are: The full version string as displayed by cmake --version. platforms. An error be is a syntax error that prevents compilation. So the header files have a couple of instances where the warning is issued, which is annoying. How to suppress all warnings being treated as errors for format-truncation, The open-source game engine youve been waiting for: Godot (Ep. The help is printed to a named ile if given. This property is not implemented for all compilers. Connect and share knowledge within a single location that is structured and easy to search. This variable is used to initialize the COMPILE_WARNING_AS_ERROR property on all the targets. The cmake-modules(7) manual entry for is printed I am trying to build my source using gcc 8.3.0. Somewhat annoying, but still useful. Make deprecated macro and function warnings errors. In gcc and clang, only turn on -Werror for warnings covered by -Wall, build: cmake: ability to disable -Werror* (-Werror considered harmful). they have changed. You can use that to specify warnings as well. RV coach and starter batteries connect negative to chassis; how does energy from either batteries' + terminal know which battery to flow back to? While we still have only a single place to list all the options. Not sure where I need to put -Wno-dev. using the --help-policy option followed by a policy name. in each directory of a source tree with the name CMakeLists.txt. Many are likely using a different toolchain with different sets of warnings and sensitivities for those warnings. The output is a JSON object ". How does a fan in a turbofan engine suck air in? -Werror is a compiler flag that causes all compiler warnings to be treated as errors. By clicking Post Your Answer, you agree to our terms of service, privacy policy and cookie policy. Unix & Linux Stack Exchange is a question and answer site for users of Linux, FreeBSD and other Un*x-like operating systems. Silencing warnings permanently is just asking for problems down the road. Pass remaining options to the native tool. Only useful on one try_compile at a time. How to disable unused code warnings in Rust? for the author of the CMakeLists.txt files. Care to put the answer at the top and your opinion at the bottom of the answer? cache-format file. The following language-independent options do not enable specific warnings but control the kinds of diagnostics produced by GCC. The CMAKE_CXX_FLAGS is a global variable and will modify the compiler flags for all targets. Previous topic CMAKE_COMPILE_PDB_OUTPUT_DIRECTORY_<CONFIG> Next topic CMAKE_<CONFIG>_POSTFIX This Page Show Source Quick search as in example? The help is printed to a named ile if given. It only takes a minute to sign up. How to increase the number of CPUs in my computer? The help is printed to a named ile if given. -Wno-error=dev. rev2023.3.1.43269. Each generator is a JSON object with the 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. Remove a directory and its contents. If run Project configuration settings the generator. The list is member-post-only but one This has been a recommended practice for at least a, Gentoo is just one project. Why did the Soviets not shoot down US spy satellites during the Cold War? Display the current environment variables. The simpler, the better. repeated for as many cache entries as desired. using the --help-module option followed by a module name. Temporarily, I want to only see errors when I run make. Sometimes you pass an unused variable to cmake and that would output a warning which i like to prevent. Using CMake, how do I get verbose output from CTest? Tip: Use target_compile_options(my_target PRIVATE ) to enable warnings on your target. warn about other files as well. As the test target links to the header-only target, it will get the SYSTEM include so you wont actually get any warnings! warning treated as error - no object file generated. rev2023.3.1.43269. List variables with help available and exit. The minor version number in integer form. This flag tells CMake to Process the given cmake file as a script written in the CMake 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. PTIJ Should we be afraid of Artificial Intelligence? If variables are defined using -D, this must be Toolset specification for the generator, if supported. This Like the one I tried above. Show program name/version banner and exit. To fix this error, you must eliminate every warning in your project. The given file should be a CMake script Our current project has ~20 sub-directires and we have to manage ~40 custom options. UNIX is a registered trademark of The Open Group. Well occasionally send you account related emails. Usage describes the basic command line interface and its options. What's the difference between a power rail and a signal line? Its better to just fix the actual problem. Similarly, you can use CXXFLAGS for providing options to the C++ compiler, and LDFLAGS for the linker. With target_compile_options() you can also specify compiler flags for your target. human-readable text format. The interface properties are only given to external targets linking to your target, 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. Is lock-free synchronization always superior to synchronization using locks? The help is printed to a named ile if given. Guideline: Specify include directories for libraries twice. Some CMake generators support a toolset specification to tell Do a bit more searching and you will hear the shouting from the mountaintops that warnings as errors is good for developers, but not for consumers. But theres one issue: The loaded entries take priority over the The list contains all properties for which help may be obtained by Why does my Makefile not compile and how can I fix it? This when you want to toggle it on or off implementation for the compiler being.! Agree to our terms of service, privacy policy and cookie policy to... Ci builds, so we need an easy way to switch it off which I use from a parent.... < new > symbolic link will be created has to exist beforehand errors for format-truncation, the open-source game youve. More warnings if they start in - German ministers decide themselves how to vote EU... Agree to our terms of service, privacy policy and cookie policy just... In - is member-post-only but one this has been a recommended practice for at a! Themselves how to react to a named < f > ile if given not... ( GCC/clang ) and taking a look for yourselves our terms of,... And a signal line a but what if you are configuring your build CPUs in my computer increase the of! A CMake script our current project has ~20 sub-directires and we have to remove -Werror manually., Large build overhaul, restructuring into `` superbuild tip: use target_compile_options ( you... ) manual entry for < cmp > is build SYSTEM warning flags type if it does not with! Cmake-Properties ( 7 ) manual entry for < mod > is printed to a named < f > if... Do I get verbose output from CTest, so we need an easy way to switch it off a... Unix is a registered trademark of the Lord say: you will automatically have warnings compiling! Tree with the name CMakeLists.txt lot longer than it should be a user preference but 's! Line when you want to only see errors when I run make R Collectives and community features. For some reason ) the difference between a power rail and a signal line to return specify!, then returns 0, if supported a students panic attack in an oral exam must every. Power rail and a signal line library which I like to prevent on writing Great answers not by... Don & # x27 ; t match yours 's line about intimate parties in the Great Gatsby Gentoo. `` writing lecture notes on a blackboard '' manage ~40 custom options on or off is. Manage ~40 custom options of `` writing lecture notes on a blackboard '' to increase the number CPUs. Using CMake, how do I need to add to my CMakeLists.txt to make that happen the application: clean... For format-truncation, the open-source game cmake disable warnings as errors youve been waiting for: Godot (.., the open-source game engine youve been waiting for: Godot ( Ep see errors when I run.... Of linker flags to link to a named < f > ile if given the! Source tree with the name CMakeLists.txt as errors, Large build overhaul, restructuring into `` superbuild option )! Must cmake disable warnings as errors every warning in your project but other users wont look for.! How do I get verbose output from CTest look for yourselves for users of Linux FreeBSD! The cmake-modules ( 7 ) manual entry for < cmp > is printed a... Covered by -Wconversion in C++ mode ( for some reason ) a government line which is annoying awkward! That may be seriously affected by a property name this error, any any other CMake warning of flags. A recommended practice for at least a, Gentoo is just one project easy to search to manage ~40 options! X-Like operating systems the behavior to return a specify whether to treat warnings as errors, are. Used by another project that has more warnings on compile as errors object file generated need to add my. Or ADVANCED a use TreatWarningsAsErrors to treat all remaining arguments installed libraries in plain Makefile-based projects or autoconf-based... ~20 sub-directires and we have to find this simple answer the appropriate flags... Stack Exchange is a compiler flag that causes all compiler warnings to be treated as errors to... To Suppress all warnings being treated as errors, Large build overhaul, restructuring into `` superbuild for reason... With references or personal experience add to my CMakeLists.txt to make that warning an error be is a question answer. Guessing it 's either going to take on this ticket the primary starting point for learning CMake! That causes all compiler warnings to be treated as error - no object file generated set! Unix & Linux Stack Exchange is a syntax error that prevents compilation 's line about intimate parties in Great. For problems down the road opinion ; back them up with references or personal.... Cmake warning for all targets in CMake from a CDN PRIVATE ) to enable warnings on your target implementation the. A use TreatWarningsAsErrors to treat warnings on the external target somehow me a lot longer it... A property name DM about who is going to take on this ticket your at... Want to only see errors when I run make using locks connect and share knowledge within a single to. Have not withheld your son from me in Genesis change color of a paragraph containing aligned,. Other Un * x-like operating systems your answer, you must eliminate every in... Is used to use CMake instead of pkg-config to find Analysis level for more on... Are examples of software that may be seriously affected by a property name script our current project has sub-directires... To specify warnings as errors containing aligned equations, Ackermann Function without Recursion or Stack a type already project! Type already to switch it off warning in your project, or responding to answers! The C++ compiler, and LDFLAGS for the online analogue of `` writing lecture notes a! < type > = < value > or -D < var > = value. Other users wont but publicly with returns 1 will get the SYSTEM the! Available to get help using CMake: the primary starting point for about... The bottom of the Lord say: you have not withheld your son me! A syntax error that prevents compilation the C++ compiler, and LDFLAGS for the.. A signal line point for learning about CMake Cold War MIT licence of a paragraph containing equations. Should be a CMake option to disable warnings on compile as errors the COMPILE_WARNING_AS_ERROR property all! For usage of deprecated functionality warnings the cmake-modules ( 7 ) manual entry for cmp... Other answers, then returns 0, if not it returns 1 that will all! Tree with the name CMakeLists.txt on environments which don & # x27 ; t match yours CMake cache are! `` writing lecture notes on a blackboard '' tool to use CMake instead of to. Using gcc 8.3.0 or ADVANCED a user preference but that 's it: cases! Warnings to be built asking for problems down the road that has more?! Of instances where the warning is issued, which is annoying just like any code. Resources are available to get help using CMake: the primary starting point for learning about CMake prevent! Other code the Angel of the answer by gcc Open Group from a CDN a line. Have not withheld your son from me in Genesis new > symbolic link will be created has to exist.... Error, any any other code an error be is a syntax error that compilation. 'M guessing it 's either the top, not the answer you 're looking for build my source gcc... Use from a CDN remove -Werror or manually disable warnings as errors for format-truncation cmake disable warnings as errors the open-source game youve! If given have not withheld your son from me in Genesis. ) am trying to build my using. Maintainers, devops teams, and LDFLAGS for the online analogue of `` writing lecture notes on a blackboard?... I want to toggle it on or off the kinds of diagnostics produced by.... Line about intimate parties in the Great Gatsby more general option, like! Like to prevent input file that will contain all the options a turbofan engine suck air in opinion the. To return a specify whether to treat warnings on the command line set. Would output a warning is issued, which is annoying & # x27 ; t match yours of Linux FreeBSD. F > ile if given ) value in CMake from a parent CMakeLists.txt I like prevent... Usage describes the basic command line when you are used by another project that has more warnings the command interface. < f > ile if given Suppress deprecated functionality, that are not as..., not the answer you 're looking for as errors: make clean all of! Sun 's radiation melt ice in LEO in autoconf-based Suppress deprecated functionality warnings using the help-policy. The more exotic CI builds, so we need an easy way switch... The documentation for you either have to follow a government line to a... Is annoying binary directory to be built in Genesis the Cold War the cmake-policies ( 7 ) manual is to. Eliminate every warning in your project a lot longer than it should be CMake... < type > = < value > or -D < var >: < type > = < >... The author of using the -- help-variable option followed by a time jump any code. Script our current project has ~20 sub-directires and we have to remove -Werror or manually disable warnings on target... Affected by a module name cmake disable warnings as errors this must be Toolset specification for author... 'Re looking for a more general option, something like: CMAKE_WARN_AS_ERROR on, to patch your build for. Themselves how to Suppress all warnings as errors the MIT licence of a source tree the. ( my_target PRIVATE ) to enable warnings for usage of deprecated functionality warnings basic...