So, to run the same command you just executed in a shell, all you need to do is add the following line in startLinting allowedWarnings: :. Add this new script to your build phases in a new run script phase and reorder it to the top. Remember to add the Swift file to the input files list, or you could hard code the file directly. You also need to compile Shell. You received the result of the command as a string. Add the following to the end of startLinting allowedWarnings: :.
To get the number of violations, the code separates the last part into single words and takes only the second word, which contains the number of violations found. If the number exceeds the allowed, you print an informative message then exit the execution with an error.
Passing any value other than zero means that there was an error and that is why the execution was terminated. Passing zero means that the operation finished everything required and the execution ended normally. In main , change the value sent to startLinting allowedWarnings: to 0 and build.
Ideally, you never want to have any violations and the ideal number should be zero. SwiftLint also provides that. Allowing yourself and your team some flexibility would be very nice. Using DispatchGroup is very important here since combine is calling the request asynchronously. Without it, your script will not wait for the publisher to receive any value and will just finish execution before running your SwiftLint step.
Calling group. Build and open the log. Your build will succeed and will show the same info as when you hard-coded the limit through code. Build again. The sky is the limit for what you can do in the build phases with Swift. You can download resources used by the project from a remote server, you can validate more things in your project directly from Xcode or you can automate configuration changes or even upload the compiled binary yourself.
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Start Reading. Please follow that issue. Skip to content. Star New issue. Jump to bottom. Linked pull requests. Copy link. What is the error you are seeing in this example?
Contributor Author. Yes, you are right. NO : The build does not use data gathered from header-file scans. Controls whether assertion logic provided by NSAssert is included in the preprocessed source code or is elided during preprocessing. Disabling assertions can improve code performance.
This is the extension used for the executable product generated by the target, which has a default value based on the product type. This is the prefix used for the executable product generated by the target, which has a default value based on the product type. This is the suffix used for the executable product generated by the target, which has a default value based on the product type.
This is a project-relative path to a file that lists the symbols to export. Space-separated list of directory paths. Specifies directories in which the compiler searches for frameworks to find included header files. Enabling this setting causes 'char' to be unsigned by default, disabling it causes 'char' to be signed by default. If enabled, passes flag -funsigned-char.
This setting also enables trigraphs. Currently equivalent to GNU Faster function calls for applications. Not appropriate for shared libraries which need to be position-independent.
YES : Generated code is nonrelocatable when the prerequisite is met. Passes flag -mdynamic-no-pic NO : Generated code is relocatable. Controls whether 'asm', 'inline', and 'typeof' are treated as keywords or whether they can be used as identifiers.
If disabled, passes flag -fno-asm. GCC normally generates special code to handle certain built-in functions more efficiently; for instance, calls to "alloca" may become single instructions that adjust the stack directly, and calls to "memcpy" may become inline copy loops.
The resulting code is often both smaller and faster, but since the function calls no longer appear as such, you cannot set a breakpoint on those calls, nor can you change the behavior of the functions by linking with a different library. In addition, when a function is recognized as a built-in function, GCC may use information about that function to warn about problems with calls to that function, or to generate more efficient code, even if the resulting code still contains calls to that function.
For example, warnings are given with -Wformat for bad calls to "printf", when "printf" is built in, and "strlen" is known not to modify global memory. If disabled, passes flag -fno-builtin. Generates extra code needed to propagate exceptions. For some targets, this implies GCC will generate frame unwind information for all functions, which can produce significant data size overhead, although it does not affect execution.
YES : Compiler generates code necessary for exception propagation. NO : Compiler does not generate code necessary for exception propagation. Passes flag -fno-exceptions. If you don't use those parts of the language, you can save some space by using this flag. Note that exception handling uses the same information, but it will generate it as needed. YES : Binary includes information about virtual classes. NO : Binary might not include information about virtual classes.
Passes flag -fno-rtti. Enable exception handling. However, you may need to enable this option when compiling C code that needs to interoperate properly with exception handlers written in other languages.
You may also wish to disable this option if you are compiling older programs that don't use exception handling. Passes flag -fexceptions. Generate output containing library calls for floating point. If enabled, passes flag -msoft-float. Activating this setting enables kernel development mode. This mode sets -static , -fno-common , -fno-cxa-atexit , -fno-exceptions , -fno-non-call-exceptions , -fapple-kext , -fno-weak , and -fno-rtti where applicable.
This mode also sets -mno-altivec , -msoft-float , -fno-builtin , and -mlong-branch for PowerPC targets. Passes flag -mkernel. Specifies whether the compiler recognizes try , catch , and throw directives.
NO : Do not allow the Objective-C exception-handling directives in source code. Passes flag -fno-objc-exceptions. The loadable bundle cannot be loaded by an application that requires garbage collection. The loadable bundle can be loaded by an application with any level of garbage-collection support.
Passes flag -fobjc-gc required : The application can load only code that supports garbage collection. The loadable bundle can be loaded only by an application that supports garbage collection. Passes flag -fobjc-gc-only. Recognize and construct Pascal-style string literals. Its use in new code is discouraged. If enabled, passes flag -fpascal-strings. Specifies whether the binary uses the built-in functions that provide access to the SSE3 extensions to the IA architecture. Old build setting. Kept around for old project compatibility.
Specifies whether the binary uses the built-in functions that provide access to the SSE4. Enables some floating point optimizations that are not IEEEcompliant, but which usually work.
Programs which require strict IEEE compliance may not work with this option. If enabled, passes flag -ffast-math. Enables or disables generation of debug symbols. When debug symbols are enabled, the level of detail can be controlled by the build 'Level of Debug Symbols' setting. YES : Binary includes debugging symbols. NO : Binary does not include debugging symbols. Activating this setting causes a 'notes' file to be produced that the gcov code-coverage utility can use to show program coverage.
If enabled, passes flag -ftest-coverage. Enabling this option will enable increased sharing of precompiled headers among targets which share the same prefix header and precompiled header directory. Xcode distinguishes among precompiled header files by generating a hash value based on the command-line options to the compiler used to create the PCH. Enabling this option will exclude certain compiler options from that hash.
Presently this option will exclude search path options -I , -iquote , -isystem , -F , -L from the hash. Enabling increased sharing of PCH files carries some risk: If two targets use the same prefix header but have different include paths which cause the prefix header to include different files when they are precompiled, then subtle problems may result because one target will use a PCH which was built using files included by the other target.
In this case, this option must be turned off in order to enforce correctness. When enabled, out-of-line copies of inline methods are declared private extern. If enabled, passes flag -fvisibility-inlines-hidden. Specifies whether to compile each source file according to its file type, or whether to treat all source files in the target as if they are of a specific language. Activating this setting indicates that code should be added so program flow arcs are instrumented.
If enabled, passes flag -fprofile-arcs. Enabling this option allows linking with the shared libraries. This is the default for most product types. If disabled, passes flag -static. Sets the minimum deployment version for OS X. In C, allocate even uninitialized global variables in the data section of the object file, rather than generating them as common blocks. This has the effect that if the same variable is declared without extern in two different compilations, you will get an error when you link them.
The only reason this might be useful is if you wish to verify that the program will work on other systems which always work this way. If enabled, passes flag -fno-common. Used by iPhoneSimulator to specify the ObjC runtime for architecture. Passes flag -fobjc-legacy-dispatch. Specifies the degree to which the generated code is optimized for speed and binary size.
Statements are independent: if you stop the program with a breakpoint between statements, you can then assign a new value to any variable or change the program counter to any other statement in the function and get exactly the results you would expect from the source code. In Apple's compiler, strict aliasing, block reordering, and inter-block scheduling are disabled by default when optimizing. As compared to the 'Fast' setting, this setting increases both compilation time and the performance of the generated code.
This setting may result in a larger binary. This setting enables all 'Faster' optimizations that do not typically increase code size. It also performs further optimizations designed to reduce code size. YES : Target generates a prefix header when the prerequisite is met. NO : Target does not generate a prefix header. Implicitly include the named header.
The path given should either be a project relative path or an absolute path. Each element is passed with flag -D. These macros are not used when precompiling a prefix header file. Make enums only as large as needed for the range of possible values. If enabled, passes flag -fshort-enums. Optimize code by making more aggressive assumptions about whether pointers can point to the same objects as other pointers.
Programs which use pointers a lot may benefit from this, but programs that don't strictly follow the ISO C rules about the type with which an object may be accessed may behave unexpectedly.
If not enabled, all symbols are exported unless explicitly marked as private extern. For more information, see Symbol Visibility. YES : Symbols that do not specify public visibility are not exported.
You can disable this option to reduce code size slightly in code that doesn't need to be thread-safe. Passes flag -fno-threadsafe-statics. Causes warnings about missing function prototypes to be treated as errors. Only applies to C and Objective-C. If enabled, passes flag -Werror-implicit-function-declaration. Enabling this option causes warnings about incompatible pointer types to be treated as errors. Enabling this option causes all warnings to be treated as errors.
If enabled, passes flag "-Werror. Unrolls loops. Unrolling makes the code larger, but may make it faster by reducing the number of branches executed. YES : Compiler generates code with unrolled loops. Passes flag -funroll-loops NO : Compiler does not unroll loops. Warn if a value is implicitly converted from a 64 bit type to a 32 bit type. This is a subset of the warnings provided by -Wconversion.
Warn about the use of deprecated functions, variables, and types as indicated by the 'deprecated' attribute. Unchecking this setting will suppress warnings from applying the offsetof macro to a non-POD type. Such as a simple struct that fails to be a POD type only by virtue of having a constructor.
This flag is for users who are aware that they are writing non-portable code and who have deliberately chosen to ignore the warning about it.
Causes warnings to be emitted when a function with a defined return type not void contains a return statement without a return-value. Also emits a warning when a function is defined without specifying a return type. Warn if methods required by a protocol are not implemented in the class adopting it.
Only applies to Objective-C. Warn whenever a switch statement has an index of enumeral type and lacks a case for one or more of the named codes of that enumeration. The presence of a default label prevents this warning.
Case labels outside the enumeration range also provoke warnings when this option is used. Warn when a function declaration hides virtual functions from a base class. Warn if an aggregate or union initializer is not fully bracketed. Warn if multiple methods of different types for the same selector are found during compilation.
The check is performed on the list of methods in the final stage of compilation. Additionally, a check is performed for each selector appearing in a selector Because these checks scan the method table only at the end of compilation, these warnings are not produced if the final stage of compilation is not reached, for example because an error is found during compilation, or because the -fsyntax-only option is being used. Warn when a class declares an nonvirtual destructor that should probably be virtual, because it looks like the class will be used polymorphically.
If enabled, passes flag -pedantic. Warn whenever a local variable shadows another local variable, parameter or global variable or whenever a built-in function is shadowed. Warn when a comparison between signed and unsigned values could produce an incorrect result when the signed value is converted to unsigned. If enabled, passes flag -Wsign-compare. When this setting is disabled, the compiler will omit such warnings if any differences found are confined to types which share the same size and alignment.
Check calls to printf and scanf, etc. Enabled by default. If disabled, passes flag -Wno-format.
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