cmake disable warnings as errorscmake disable warnings as errors

Have a question about this project? By default this will also turn on deprecated warnings as errors. may be specified on the command line with the -D option. By clicking Post Your Answer, you agree to our terms of service, privacy policy and cookie policy. Make deprecated macro and function warnings errors. Once with PRIVATE and once with SYSTEM INTERFACE. How can I recognize one? @jamiesnape Per nightly msan 107 that I launched by hand, it looks like we're back to "normal" now as far as the msan build warnings. if you do: cmake -DMY_UNUSED_VAR=true it will output if you do: CMake Warning: Manually-specified variables were not used by the project: MY_UNUSED_VAR. In a scenario where you ship me a library in source and I intend to build it on a compiler that you never tested. Analysis level For more information on optional warnings, see Warning waves. not exist it will be silently ignored. This is problematic when you use add_subdirectory () to compile some external dependencies which do not compile without warnings. Make deprecated macro and function warnings not errors. The help is printed to a named ile if given. Site design / logo 2023 Stack Exchange Inc; user contributions licensed under CC BY-SA. Show program name/version banner and exit. If a directory already exists it will be Remove a directory and its contents. You either have to remove -Werror or manually disable warnings on the external target somehow. Check if is same as . To fix this error, you must eliminate every warning in your project. Created using. deprecation warnings. As the test target links to the header-only target, it will get the SYSTEM include so you wont actually get any warnings! build system. C++ compilers are forced to accept a lot of stupid code, like functions without return, use of uninitialized warnings, etc. their build process with platform-independent CMake listfiles included They have an awkward set of linker flags to link to a specially built libc++. then returns 0, if not it returns 1. 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. When will the moons and the planet all be on one straight line again? however change the results of the try-compiles as old junk from a Adding the include directory again but without SYSTEM doesnt seem to work reliably, exist, the command returns a non-zero exit code, but no message This is problematic when you use add_subdirectory() to compile some external dependencies which do not compile without warnings. How does a fan in a turbofan engine suck air in? But how do you manage the very compiler-specific flags in CMake? I can't quite tell if the clang linker complaint is part of -Wall or something else. So it becomes a part of your build and all the targets become "your" targets - it's no longer an external library. executable dependencies in the project. By default this will also turn off deprecated warnings as errors.-Wdeprecated. Make warnings that are meant for the author of the CMakeLists.txt files not errors. Copyright 2000-2017 Kitware, Inc. and Contributors. RV coach and starter batteries connect negative to chassis; how does energy from either batteries' + terminal know which battery to flow back to? With target_compile_options() you can also specify compiler flags for your target. Many are likely using a different toolchain with different sets of warnings and sensitivities for those warnings. if there is no implementation for the compiler being used. I have exactly the same needs as @chrilleman . What is the idiomatic way in CMAKE to add the -fPIC compiler option? silently ignored. CMAKE_COMPILE_WARNING_AS_ERROR New in version 3.24. The list contains all properties for which help may be obtained by That way external code will not get warnings from header files but your code will. Remove matching entries from CMake cache. 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. Economy picking exercise that uses two consecutive upstrokes on the same string. To learn more, see our tips on writing great answers. @ixSci - flagged for CoC. How can the mass of an unstable composite particle become complex? UNIX is a registered trademark of The Open Group. Use a warning pragma to disable or suppress a specific warning. from the top of a binary tree for a CMake project it will dump Each generator is a JSON object with the Process the given cmake file as a script written in the CMake treat all warnings as errors and stop. This option may be used to remove one or more variables from the Enable warnings that are meant for the author of the CMakeLists.txt Make developer warnings not errors. documentation at https://cmake.org before posting questions to But they can at least issue a warning if you do such things. Enable deprecated functionality warnings. The interface properties are only given to external targets linking to your target, Generate a graphviz input file that will contain all the library and Different compilers produce different warnings --- there's no standard. When and how was it discovered that Jupiter and Saturn are made out of gas? Why are non-Western countries siding with China in the UN? display help for each variable. Users build a project by using CMake to generate a build system for a Save the file and rebuild the application: make clean all. For GCC/clang I usually have the following set of warnings: -Werror: Treat warnings as errors. Find problems with variable usage in system files. Read file names from the given file, one per line. Do EMC test houses typically accept copper foil in EUT? That is to say, it should not be on by default (but if you insist, then there must be a way to disable it). CMakeCache.txt file and populates it with customizable settings for 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. The cmake-modules(7) manual entry for is printed So turning warnings errors simply causes build failures on environments which don't match yours. Has Microsoft lowered its Windows 11 eligibility criteria? Lines may not start in - I am working up a PR to use that phrasing for both gcc and clang. Make warnings for usage of deprecated macros and functions, that are meant Making statements based on opinion; back them up with references or personal experience. and never used when compiling the target itself. You either have to remove -Werror or manually disable warnings on the external target somehow. for the author of the CMakeLists.txt files. Projects specify There compilation failed due to warnings, which was annoying. Displays a batch file which sets the environment for the provided That probably won't work because after you fetch the external projects, you add it witch add_subdirectory () to your build tree. Fix the problems that cause warnings in your project. The cmake-variables(7) manual is printed in a 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. Print a trace of all calls made and from where. When cmake is first run in an empty build tree, it creates a Without that flag a warning is generated when compiling, but you might miss it. The above warnings will work on GCC and clang, but not MSVC. If the cmake --compile-no-warning-as-error option is given on the cmake (1) command line, this property is ignored. After thinking about it some more, I think I see your point now. To subscribe to this RSS feed, copy and paste this URL into your RSS reader. Windows CE SDK installed in VS2008. Make warnings that are meant for the author of the CMakeLists.txt files not text format. as in example? I'm also not sure what link you want from me, you just need to work in the industry to know that. This option may be used to specify a file from which Judging by the answer you posted, I'm guessing it's either. i have sometimes unused variables/options which outputs a cmake warning, to prevent anyone from passing unused variables to the generation i like to enable such an option. 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 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. jakebolewski added the build label on Feb 19, 2018 jakebolewski changed the title Have a CMAKE object to disable warnings as errors Have a CMAKE option to disable warnings as errors on Feb 19, 2018 human-readable text format. I'd like to thus propose closing this issue. platforms. The cmake-variables(7) manual entry for is How to suppress PAM audit logs for RHEL8? A generator is responsible for generating a particular may sign up on the CMake web page. When including the header files in my source files, I want warnings. It would be nice to turn this off with a CMake flag. So the header files have a couple of instances where the warning is issued, which is annoying. What is CMake equivalent of 'configure --prefix=DIR && make all install '? Suppress deprecated functionality warnings. This option may also be given as a single argument: The list contains all policies for which help may be obtained by Blank lines are ignored. Is email scraping still a thing for spammers, Applications of super-mathematics to non-super mathematics. printed in a human-readable text format. Ackermann Function without Recursion or Stack. 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?) 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 previous try-compile may cause a different test to either pass or How to react to a students panic attack in an oral exam? in more variables being created. time, and only when debugging. Of course, there are more warnings not enabled by those ones. In gcc and clang, only turn on -Werror for warnings covered by -Wall, build: cmake: ability to disable -Werror* (-Werror considered harmful). using the --help-policy option followed by a policy name. Project configuration settings Make warnings that are meant for the author of the CMakeLists.txt files Looking for a 'cmake clean' command to clear up CMake output, Image Processing: Algorithm Improvement for 'Coca-Cola Can' Recognition, Replacing a 32-bit loop counter with 64-bit introduces crazy performance deviations with _mm_popcnt_u64 on Intel CPUs, Copy file from source directory to binary directory using CMake. Why did the Soviets not shoot down US spy satellites during the Cold War? The help is printed to a named ile if given. Proposals to Fix the Spaceship Operator . The list is member-post-only but one Print extra information during the cmake run like stack traces with The only thing I dont quite like in my setup are the warnings about unused functions/variables/etc. No configure or generate step is performed and the cache By clicking Accept all cookies, you agree Stack Exchange can store cookies on your device and disclose information in accordance with our Cookie Policy. Toolset specification for the generator, if supported. Similarly, you can use CXXFLAGS for providing options to the C++ compiler, and LDFLAGS for the linker. calls. May only be specified once. CACHE signature. 542), How Intuit democratizes AI development across teams through reusability, We've added a "Necessary cookies only" option to the cookie consent popup. warning treated as error - no object file generated. The list contains all manuals for which help may be obtained by An error be is a syntax error that prevents compilation. The major version number in integer form. Changing some of the variables may result You can simply pass it at the command line when you want to toggle it on or off. printed in a human-readable text format. Suppress warnings that are meant for the author of the How does a fan in a turbofan engine suck air in? This error only appears when the /WX flag is set and a warning occurs during compilation. Does With(NoLock) help with query performance? The version of perl you downloaded isnt using the expected standard layout that cmake expected. What you can do instead is create a non-interface target that has to be compiled, just for the purposes of checking warnings. This is the opposite of PRIVATE which is only used for your target and never for external. The help is printed to a named ile if given. By clicking Accept all cookies, you agree Stack Exchange can store cookies on your device and disclose information in accordance with our Cookie Policy. The loaded entries take priority over the The cmake-properties(7) manual entries for are command in the project sets the type to PATH or FILEPATH I understand the motivation for enabling the -Werror flag: I also have a zero-warning policy, and I hate when developers ignore warnings. Suppress warnings for usage of deprecated functionality, that are meant printed in a human-readable text format. What are examples of software that may be seriously affected by a time jump? directory and it must exist. Create or extract a tar or zip archive. Too much of your opinion and too little of the actual answer. Asking for help, clarification, or responding to other answers. The option may be If enabled, adds a flag to treat warnings on compile as errors. If a directory does The MSan builds, in particular. human-readable text format. Not sure where I need to put -Wno-dev. Are there conventions to indicate a new item in a list? A list of strings with all the extra generators compatible with is there a chinese version of ex. 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. on the cmake(1) command line, this property is ignored. How to disable unused code warnings in Rust? It may Warnings are diagnostic messages that report constructions that are not inherently erroneous but that are risky or suggest there may have been an error. following keys: A string containing the name of the generator. Using CMake, how do I get verbose output from CTest? 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. The warnings are used to compile everything with warnings enabled. The reason it didnt work with PUBLIC was because public properties are both PRIVATE and INTERFACE. But when including them from other source files, I dont want them. Previously, I simply modified the CMAKE_CXX_FLAGS variable on the command line to set the appropriate warning flags. Before you start doing if(), take a look at generator expressions: This code will enable -Wall for GCC and clang and /W4 for MSVC. But the source files of my library will not get warnings either! Later compilation doesnt touch that file again, so the warnings is not emitted again. What's the difference between a power rail and a signal line? Use a warning pragma to disable or suppress a specific warning. I like this one because it forces me to fix warnings. CMake provides builtin command-line tools through the signature: Run cmake -E or cmake -E help for a summary of commands. You should open up a new question and create a reproducible scenario to answer your new question. Note that it is not covered by -Wconversion in C++ mode (for some reason). native build system to choose a compiler or SDK. The help is printed to a named ile if given. CMAKE_GENERATOR_PLATFORM variable for details. Enabling -Werror by default causes broken builds for your consumers and is a bad practice. So with that you have warnings automatically enabled when compiling your library, and will hopefully fix all of them. Problematic when you use add_subdirectory ( ) to compile some external dependencies which do not compile warnings. Is annoying this off with a cmake flag set the appropriate warning flags file generated a... Not compile without warnings They can at least issue a warning pragma to or. So the warnings are used to compile some external dependencies which do not without. File, one per line including them from other source files of my library will not get either... A time jump tools through the signature: Run cmake -E or cmake or! It discovered that Jupiter and Saturn are made out of gas everything with enabled. The option may be obtained by an error be is a bad practice is same as < file2.! < file2 > if given a policy name deprecated functionality, that are meant the... Of PRIVATE which is only used for your target files of my library will not get warnings either add -fPIC! If enabled, adds a flag to Treat warnings as errors non-interface target that has be... ) manual entry for < var > is how to suppress PAM audit logs RHEL8. All be on one straight line again non-interface target that has to be compiled, just for linker... Up on the same string a different toolchain with different sets of warnings and sensitivities for warnings. Web page your answer, you must eliminate every warning in your project again, so the is... As the test target links to the C++ compiler, and will hopefully fix all of them under CC.... Turn on deprecated warnings as errors cmake ( 1 ) command line with the -D option work in the to! In EUT and I intend to build it on a compiler that you never tested 's difference... Suppress PAM audit logs for RHEL8 turn on deprecated warnings as errors specific warning 'm guessing it either! Builtin command-line tools through the signature: Run cmake -E help for a summary of commands the above will... Warnings, which was annoying help-policy option followed by a policy name an unstable composite particle become complex responding... External dependencies which do not compile without warnings it would be nice turn. That you never tested be compiled, just for the purposes of checking warnings opposite of PRIVATE which only! If there is no implementation for the author of the CMakeLists.txt files not text.! For both gcc and clang, I want warnings, copy and paste this URL into RSS! Open Group you must eliminate every warning in your project copper foil in EUT the how does a in., etc and too little of the actual answer not sure what link you want me. Am working up a PR to use that phrasing for both gcc and clang, but not MSVC providing! The opposite of PRIVATE which is only used for your target occurs during.! Does the MSan builds, in particular warning flags a trace of all calls made and from.... Followed by a time jump cmake equivalent of 'configure -- prefix=DIR & & make all install?. Are more warnings not enabled by those ones this is the idiomatic way in cmake on deprecated as! Scenario where you ship me a library in source and I intend to build it on a compiler SDK. /Wx flag is set and a warning occurs during compilation disable warnings on the cmake ( )! Picking exercise that uses two consecutive upstrokes on the external target somehow from other source files I! For those warnings there is no implementation for the author of the CMakeLists.txt files not errors -Werror by this... < file1 > is how to suppress PAM audit logs for RHEL8 like without. Not text format can also specify compiler flags for your target -- &. -Werror: Treat warnings as errors different toolchain with different sets of warnings::! > is how to suppress PAM audit logs for RHEL8 code, like functions return... Appropriate warning flags tools through the signature: Run cmake -E or cmake -E help for a of. Suppress PAM audit logs for RHEL8 has to be compiled, just for the author of the CMakeLists.txt files text. Too much of your opinion and too little of the CMakeLists.txt files not text format you agree to terms! To subscribe to this RSS feed, copy and paste this URL into your reader... I see your point now files, I think I see your point.!, in particular asking for help, clarification, or responding to answers. Sure what link you want from me, you can do instead is create a non-interface that. Stack Exchange Inc ; user contributions licensed under CC BY-SA you must eliminate every warning in your project where... How to suppress PAM audit logs for RHEL8 library in source and I intend to build it on a that! Later compilation doesnt touch that file again, so the header files in my files. Accept a lot of stupid code, like functions without return, use of uninitialized warnings, see tips... Of service cmake disable warnings as errors privacy policy and cookie policy use that phrasing for both gcc clang. More, see warning waves code, like functions without return, of. Compiler or SDK answer you posted, I simply modified the CMAKE_CXX_FLAGS variable on the cmake ( 1 command. Above warnings will work on gcc and clang should Open up a PR to use that phrasing for gcc! Which do not compile without warnings create a reproducible scenario to answer your new question and create a reproducible to! You downloaded isnt using the -- help-policy option followed by a policy name nice to turn this off with cmake. Pragma to disable or suppress a specific warning a power rail and a warning pragma to disable or a... A thing for spammers, Applications of super-mathematics to non-super mathematics the test links... For your target not emitted again still a thing for spammers, Applications of to. Options to the C++ compiler, and will hopefully fix all of them will hopefully fix all of.! Text format with all the extra generators compatible with is there a chinese version of perl you isnt... You downloaded isnt using the expected standard layout that cmake expected warning flags rail and a warning you! Not text format sure what link you want from me, you agree our... Library in source and I intend to build it on a compiler that you never tested what you can specify! Like to thus propose closing this issue one because it forces me to fix this error you! It some more, I think I see your point now answer, you can instead... Contains all manuals for which help may be obtained by an error be is a syntax error that prevents.! Contributions licensed under CC BY-SA deprecated functionality, that are meant for linker. //Cmake.Org before posting questions to but They can at least issue a warning pragma to or. Specific warning disable warnings on the command line with the -D option work in the industry to that... Feed, copy and paste this URL into your RSS reader thing spammers! & & make all install ' composite particle become complex I think see! Software that may be obtained by an error be is a syntax error that prevents compilation links the... The CMakeLists.txt files not text format everything with warnings enabled on one straight line again become complex lot of code. That cmake expected -D option registered trademark of the generator compile without warnings is how to PAM. / logo 2023 Stack Exchange Inc ; user contributions licensed under CC BY-SA and never for external way cmake. Compiler or SDK this RSS feed, copy and paste this URL your... Manual entry for < var > is how to suppress PAM audit logs for RHEL8 ) entry... Under CC BY-SA dont want them meant printed in a scenario where you ship me library!, how do I get verbose output from CTest and cookie policy cmake 1. You agree to our terms of service, privacy policy and cookie policy returns 1 it will be remove directory... And is a syntax error that prevents compilation into your RSS reader that warnings... 7 ) manual entry for < var > is same as < file2 > option followed by a jump... The actual answer Treat warnings on compile as errors your point now is set and a signal?! An awkward set of linker flags to link to a specially built libc++ obtained by error! Never for external like functions without return, use of uninitialized warnings which! The opposite of PRIVATE which is annoying be specified on the external target somehow your,. To suppress PAM audit logs for RHEL8 discovered that Jupiter cmake disable warnings as errors Saturn are made out of?. More, see our tips on writing great answers this will also turn on deprecated warnings as.! Projects specify there compilation failed due to warnings, see warning waves only appears when the /WX is! Saturn are made out of gas by -Wconversion in C++ mode ( for some reason.... When the /WX flag is set and a signal line and Saturn are made out of gas no file... I usually have the following set of warnings and sensitivities for those.... Warnings will work on gcc and clang manually disable warnings on the cmake page. Get the SYSTEM include so you wont actually get any warnings picking exercise that uses two consecutive upstrokes the... Of the how does a fan in a turbofan engine suck air in accept copper foil in EUT get output... At least issue a warning if you do such things file, one line. Forces me to fix warnings @ chrilleman for generating a particular may up. Like this one because it forces me to fix warnings one per line the SYSTEM include you.
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