Silencing warnings permanently is just asking for problems down the road. Enable deprecated functionality warnings. Display the current environment variables. This time the GCC compiler properly flags the problem with our code. 542), How Intuit democratizes AI development across teams through reusability, We've added a "Necessary cookies only" option to the cookie consent popup. /WX tells the compiler to treat all warnings as errors. are Open up the CMakeLists.txt file and, underneath the section add_executable, add the following: target_compile_options(${PROJECT_NAME} PRIVATE. The cmake-variables(7) manual entry for is While the above method works greater for most libraries, it doesnt work with header-only libraries. But when including them from other source files, I dont want them. is logged. If youre a good citizen youve created an interface library target: That way users of the library can just use target_link_libraries() and will get the proper include paths automatically. The help is printed to a named ile if given. There are cases when it should be a user preference but that's it: some cases. Build target clean first, then build. What does a search warrant actually look like? But theres one issue: The help is printed to a named ile if given. The warnings are used to compile everything with warnings enabled. This property is not implemented for all compilers. Too much of your opinion and too little of the actual answer. Windows CE SDK installed in VS2005. Different compilers produce different warnings --- there's no standard. ". CMakeCache.txt file and populates it with customizable settings for Previously, I simply modified the CMAKE_CXX_FLAGS variable on the command line to set the appropriate warning flags. Care to put the answer at the top and your opinion at the bottom of the answer? Keys are: The full version string as displayed by cmake --version. is there a chinese version of ex. The minor version number in integer form. Which basecaller for nanopore is the best to produce event tables with information about the block size/move table? This option is best used for one try-compile at a This is to prevent erroneous user parameter settings. treat all warnings as errors and stop. Connect and share knowledge within a single location that is structured and easy to search. Many are likely using a different toolchain with different sets of warnings and sensitivities for those warnings. Unix & Linux Stack Exchange is a question and answer site for users of Linux, FreeBSD and other Un*x-like operating systems. I would like cmake to stop immediately if it encounters any internal error. as file names even if they start in -. The cmake-policies(7) manual is printed in a Thanks. Do EMC test houses typically accept copper foil in EUT? Already on GitHub? Check if is same as . CMakeLists.txt files. It only takes a minute to sign up. 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. rev2023.3.1.43269. An interface library can only have INTERFACE targets. used to configure projects in scripts. The interface properties are only given to external targets linking to your target, Speaking as someone who regularly uses top-of-tree compiler builds, where warnings break frequently, hard-coded warnings-as-errors is a blight. So it becomes a part of your build and all the targets become "your" targets - it's no longer an external library. Copy directories to directory. supported. 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. Targets linking to it will not get the warnings enabled. If you know anything, please let me know. Learn more about Stack Overflow the company, and our products. Depending on the makefile, you probably need something like, I do not want to edit the make file, is there a way to do it only via the command line argument. What are examples of software that may be seriously affected by a time jump? -B build -Wno-dev anon45792294 January 1, 2021, 7:59pm 3 However, when it comes to just silencing warnings. Not sure where I need to put -Wno-dev. Toolset specification for the generator, if supported. Like the one I tried above. silently ignored. To subscribe to this RSS feed, copy and paste this URL into your RSS reader. to stdout. Why are non-Western countries siding with China in the UN? CMakeGraphVizOptions.cmake for more details. Hiding all warnings sounds like a not so good idea, or rather treat warnings as errors. When creating a library you specify include directories and link to other libraries. The help is printed to a named ile if given. Later compilation doesnt touch that file again, so the warnings is not emitted again. Generate graphviz of dependencies, see CMakeGraphVizOptions.cmake for more. How to suppress PAM audit logs for RHEL8? Making statements based on opinion; back them up with references or personal experience. deprecation warnings. The help is printed to a named ile if given. The cmake executable is the CMake command-line interface. How to increase the number of CPUs in my computer? The list contains all manuals for which help may be obtained by For the future readers: this opinion is controversial at best. Enable warnings for usage of deprecated functionality, that are meant with the following keys: A JSON object with version information. Note that this is not equivalent to -Werror -pedantic, because why would it? 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. Compilers will not issue warnings from header files originating from there. You either have to remove -Werror or manually disable warnings on the external target somehow. Only useful on one try_compile at a time. Create or extract a tar or zip archive. CMake provides a command-line signature to build an already-generated Adding the include directory again but without SYSTEM doesnt seem to work reliably, It forces me and countless other package maintainers, devops teams, and so on, to patch your build. There compilation failed due to warnings, which was annoying. But they did prevent a couple of bugs, so Ill keep them enabled. if you do: cmake -DMY_UNUSED_VAR=true it will output Put cmake in trace mode, but output only lines of a specified file. cmake -S . Have a question about this project? changed with -D option. Why was the nose gear of Concorde located so far aft? Easiest way to remove 3/16" drive rivets from a lower screen door hinge? Sign in Site design / logo 2023 Stack Exchange Inc; user contributions licensed under CC BY-SA. files. The warnings are used to compile everything with warnings enabled. 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?) How to react to a students panic attack in an oral exam? It is silently ignored then the will be converted to an absolute path. See the On the other hand, if your build system is in-fact CMake, There is extensive discussion about doing so with CMake here: #1318 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. It would be nice to turn this off with a CMake flag. Already on GitHub? Developers who enable -Werror are making a statement: we care about our code base, and we won't accept warnings here. The help is printed to a named ile if given. 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. The help is printed to a named ile if given. @Karthik, muru gave you the command line: @muru, your comment sounds like the answer here; would you mind providing it as such? 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 may sign up on the CMake web page. If the : portion is given it must be one of the types Have a question about this project? -Wall: A better name would be -Wcommon. The cmake-properties(7) manual entries for are -Wextra: Some more common warnings not enabled by -Wall. Behavior is default in CMake >= 3.0. Once with PRIVATE and once with SYSTEM INTERFACE. cmake-generators(7) manual. What would happen if an airplane climbed beyond its preset cruise altitude that the pilot set in the pressurization system? Temporarily, I want to only see errors when I run make. Find problems with variable usage in system files. My cmake script searches for Perl libs, but I get the following warning message: How can I disable this? in each directory of a source tree with the name CMakeLists.txt. Sign up for a free GitHub account to open an issue and contact its maintainers and the community. the native build system how to choose a compiler. So an external project linking my_library will not get any warnings from the header files of my library. I had this happen when someone mangled python at my company in a bizzare way. It would use target_compile_options to add those flags. Is something's right to be free more important than the best interest for its own species according to deontology? List variables with help available and exit. platforms. So you might try something like this: You will privately add the include/ without SYSTEM, but publicly with. warn about other files as well. However, when it comes to just silencing warnings. Sign in Somewhat annoying, but still useful. How can I configure CMake to treat compiler warnings as errors during the build? zero exit code (i.e. What's the difference between a power rail and a signal line? Show program name/version banner and exit. Links to available documentation may be found on this web page. This option may be used to remove one or more variables from the I am trying to build my source using gcc 8.3.0. Thank you! What tool to use for the online analogue of "writing lecture notes on a blackboard"? @Frank: But it is the purpose of the question - to affect on the, The open-source game engine youve been waiting for: Godot (Ep. Does With(NoLock) help with query performance? Not the answer you're looking for? rev2023.3.1.43269. The trick is to use target_include_directories(my_library SYSTEM PUBLIC include/). Touch a file if it exists but do not create it. Suppress warnings for usage of deprecated functionality, that are meant Combine INTERFACE include directories with SYSTEM to prevent warnings showing up there and use PRIVATE include directories without SYSTEM for compiling your own project. The only thing I dont quite like in my setup are the warnings about unused functions/variables/etc. @ixSci - flagged for CoC. Older versions of GCC can error when using default c++ constructors with move semantics. UNIX is a registered trademark of The Open Group. - t.niese Nov 25, 2020 at 20:45 1 It might be a good idea to tag this question with the specific compiler you're using, since the answer depends on this. Dont find variables that are declared on the command line, but not (It allows some warnings to remain configured as warnings, instead of errors.) So with that you have warnings automatically enabled when compiling your library, and will hopefully fix all of them. as in example? The number of distinct words in a sentence, Duress at instant speed in response to Counterspell. For example, I compile with -Wconversion but my dependencies dont. CMakeCache.txt file, globbing expressions using * and ? The help is printed to a named ile if given. Supported formats are: 7zip, gnutar, pax, This should also be reflected by the build files. By clicking Post Your Answer, you agree to our terms of service, privacy policy and cookie policy. printed in a human-readable text format. If a directory does You can disable the warning like this when you are configuring your build. Remove a directory and its contents. Find variables that are declared or set, but not used. 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. If a 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. Blank lines are ignored. true if the generator supports platforms and false otherwise. Despite the help with some scripting, sometimes a user might do some custom CLI change, thinking he changed a parameter, but actually not due to a little typo. The reason it didnt work with PUBLIC was because public properties are both PRIVATE and INTERFACE. Changing some of the variables may result The list contains all policies for which help may be obtained by If -DCMAKE_CXX_FLAGS="" is annoying, why not move it into the CMakeLists.txt? not exist it will be silently ignored. How can the mass of an unstable composite particle become complex? What is the idiomatic way in CMAKE to add the -fPIC compiler option? Isn't the msan issue that the -lc++abi is added to CXXFLAGS and not linktime-only flags? using the --help-policy option followed by a policy name. Pass remaining options to the native tool. How do you prevent your header files from leaking warnings into other projects? As final solutions, I think we should do one of two approaches: Create a CMake function called for all our targets. Share Improve this answer answered Mar 29, 2019 at 16:05 muru Creating Xcode project from Cmake contains unwanted compiler flags, cmake cannot find libraries installed with vcpkg, VSCode + cmake + windows 10 -> cmake not in path. It would be nice to turn this off with a CMake flag. Not the answer you're looking for? created. 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. There is not much I can do besides pull-requests to fix those warnings or locally disabling them, Build instead of default targets. 542), How Intuit democratizes AI development across teams through reusability, We've added a "Necessary cookies only" option to the cookie consent popup. What is CMake equivalent of 'configure --prefix=DIR && make all install '? specified by the set() command documentation for its Proposals to Fix the Spaceship Operator . directories too. So the header files have a couple of instances where the warning is issued, which is annoying. To learn more, see our tips on writing great answers. I would like to make that warning an error, any any other CMake Warning. Or your cmake code could just be wrong. Find centralized, trusted content and collaborate around the technologies you use most. 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. 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. mkfifo with all permissions still errors with permissions denied for other user, tp-link Archer T4U make error (kali linux), Cross-compiling Linux kernel fails on bzImage. 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. I have exactly the same needs as @chrilleman . printed in a human-readable text format. C++ compilers are forced to accept a lot of stupid code, like functions without return, use of uninitialized warnings, etc. This option may be used to specify a file from which How can I recognize one? Suspicious referee report, are "suggested citations" from a paper mill? instead of linking to it. The following language-independent options do not enable specific warnings but control the kinds of diagnostics produced by GCC. By default this will also turn on deprecated warnings as errors. Similarly, you can use CXXFLAGS for providing options to the C++ compiler, and LDFLAGS for the linker. Is lock-free synchronization always superior to synchronization using locks? -- prefix=DIR & & make all install ' but publicly with -b build -Wno-dev anon45792294 1! Will output put CMake in trace mode, but publicly with under CC.! In EUT it comes to just silencing warnings by -Wall can error when using default constructors... Not so good idea, or rather treat warnings as errors immediately if it encounters any error! Was because PUBLIC properties are both PRIVATE and INTERFACE in EUT houses typically accept foil. Specify include directories and link to other libraries so far aft sets of and! With China in the pressurization system and cookie policy diagnostics produced by GCC CMake function for! Without system, but output only lines of a source tree with the following:. The set ( ) command documentation for its own species according to deontology for example, I compile -Wconversion. In CMake to stop immediately if it exists but do not enable specific warnings but control the kinds of produced. An external project linking my_library will not issue warnings from header files originating from there CMake script searches Perl! And our products for more I want to only see errors when I run.... Similarly, you agree to our terms of service, privacy policy and cookie policy use CXXFLAGS for options... Freebsd and other Un * x-like operating systems file names even if they in! Our tips on writing great answers Exchange is a registered trademark of the types have a question this. Ldflags for the future readers: this opinion is controversial at best it be! > is same as < file2 > are likely using a different toolchain with different sets of and! Our tips on writing great answers that you have warnings automatically enabled when compiling your library, and hopefully... Silently ignored then the < value > will be converted to an absolute path the I am trying to my... On a blackboard '' are used to specify a file if it any... Some more common warnings not enabled by -Wall to just silencing warnings temporarily, compile... The GCC compiler properly flags the problem with our code response to Counterspell particle become complex composite become. A paper mill PROJECT_NAME } PRIVATE the community clicking Post your answer you! There compilation failed due to warnings, etc: CMake -DMY_UNUSED_VAR=true cmake disable warnings as errors will output put CMake in mode! What would happen if an airplane climbed beyond its preset cruise altitude that the pilot in... ( my_library system PUBLIC include/ ) but theres one issue: the help is printed to a named < >! Same needs as @ chrilleman CMake to add the following keys: a JSON object with version information the to. An unstable composite particle become complex feed, copy and paste this URL into RSS. The answer at the top and your opinion and too little of the answer company a. -- version interest for its Proposals to fix the Spaceship Operator an airplane climbed beyond its preset altitude. So an external project linking my_library will not issue warnings from the I am trying build! * x-like operating systems build files > ile if given when it comes to just silencing warnings, you disable. Like functions without return, use of uninitialized warnings, which is annoying linktime-only... A couple of bugs, so the warnings is not equivalent to -pedantic. Under CC BY-SA configure CMake to treat all warnings sounds like a not so good idea, rather. May be obtained by for the online analogue of `` writing lecture on! Writing lecture notes on a blackboard '' warnings not enabled by -Wall opinion... Using locks know anything, please let me know are examples of software that be... To use target_include_directories ( my_library system PUBLIC include/ ) logo 2023 Stack Exchange is a question about this?... Version string as displayed by CMake -- version other projects immediately if it encounters any internal error enable... Converted to an absolute path Perl libs, but I get the warnings is not emitted again and... Will hopefully fix all of them is CMake equivalent of 'configure -- prefix=DIR & & make all install?! /Wx tells the compiler to cmake disable warnings as errors compiler warnings as errors that are declared or set, but output only of. Cmake equivalent of 'configure -- prefix=DIR & & make all install ' making statements based on opinion ; back up. Exchange is a registered trademark of the Open Group but they did prevent a of. User preference but that 's it: some cases list contains all manuals for which help may used! Of the actual answer name CMakeLists.txt my computer can I configure CMake to all. A not so good idea, or rather treat warnings as errors and policy. Difference between a power rail and a signal line CMakeLists.txt file and, underneath the section,. If given s no standard do EMC test houses typically accept copper foil in EUT didnt work with PUBLIC because. Can use CXXFLAGS for providing options to the c++ compiler, and our.... Any internal error used to compile everything with warnings enabled to make that warning error. Option is best used for one try-compile at a this is not emitted.. Are configuring your build sign up for a free GitHub account to Open an issue and contact its maintainers the... Writing lecture notes on a blackboard '' include/ without system, but I get the following: (! Type > portion is given it must be one of the Open Group into... Overflow the company, and will hopefully fix all of them cookie policy disable the warning like this when are. Overflow the company, and will hopefully fix all of them produce different warnings -- there. Time the GCC compiler properly flags the problem with our code to only see errors I! ( 7 ) manual is printed to a named < f > ile if given produce event tables with about! Be converted to an absolute path like to make that warning an error, any any other CMake warning opinion. Are cases when it comes to just silencing warnings permanently is just asking for problems the!: this opinion is controversial at best warnings sounds like a not so good idea, rather... When I run make entries for < prop > are -Wextra: some more common warnings not by! Underneath the section cmake disable warnings as errors, add the -fPIC compiler option and the.! All warnings as errors during the build likely using a different toolchain with different sets of warnings and cmake disable warnings as errors. Failed due to warnings, etc company, and will hopefully fix all of them manuals which. This web page one or more variables from the header files have a couple of instances where the warning issued. In EUT underneath the section add_executable, add the following language-independent options not! A user preference but that 's it: some cases must be one of approaches. C++ constructors with move semantics functionality, that are meant with the:. Toolchain with different sets of warnings and sensitivities for those warnings system, I. Different warnings -- - there & # x27 ; s no standard it must be one two! Are cases when it should be a user preference but that 's it some... Ill keep them enabled and false otherwise distinct words in a bizzare way synchronization superior! In trace mode, but output only lines of a source tree with name! Compiler to treat compiler warnings as errors to just silencing warnings permanently just! Trick is to use target_include_directories ( my_library system PUBLIC include/ ) with ( NoLock ) help query... Students panic attack in an oral exam if a directory does you can disable the is! Files cmake disable warnings as errors I think we should do one of the types have a couple of instances where warning. Is to prevent cmake disable warnings as errors user parameter settings the msan issue that the -lc++abi is added to CXXFLAGS not! About the block size/move table unix is a registered trademark of the at. The nose gear of Concorde located so far aft cmake disable warnings as errors to this RSS,. Way in CMake to add the include/ without system, but I get the following language-independent options do not specific! } PRIVATE are declared or set, but I get the warnings used. Sign in site design / logo 2023 Stack Exchange Inc ; user contributions licensed CC... < prop > are -Wextra: some cases have warnings automatically enabled when compiling library. References or personal experience cmake disable warnings as errors may be found on this web page warnings sensitivities! Overflow the company, and LDFLAGS for the online analogue of `` writing lecture notes on a blackboard?! Software that may be found on this web page use target_include_directories ( my_library system PUBLIC include/ ) NoLock. Same needs as @ chrilleman as @ chrilleman in a sentence, Duress at speed. Its Proposals to fix the Spaceship Operator targets linking to it will output put CMake in trace,... Have exactly the same needs as @ chrilleman thing I dont want them the problem with our code I to!, trusted content and collaborate around the technologies you use most try something like:. Or personal experience have to remove one or more variables from the files. N'T the msan issue that the pilot set in the Un the msan issue that the pilot in. Rail and a signal line the CMakeLists.txt file and, underneath the section add_executable, add the -fPIC compiler?..., 2021, 7:59pm 3 However, when it should be a user preference but that it... Type > portion is given it must be one of two approaches: create a CMake called... Of diagnostics produced by GCC at best basecaller for nanopore is the best to produce event tables with about!