Compile and run on macOS

[brandonxin]

This patch allows clice to be compiled and run on macOS.

Main Changes

Use std::localtime_r instead of std::chrono::zoned_time

std::chrono::zoned_time is an experimental feature of libc++ and is unavailable on macOS, so I concatenate the output of std::localtime_r and the millisecond part of chrono::system_clock::now() to get a time string identical to current implementation. I admit that it is a little bit clumsy and more like a temporary solution, and I am looking forward to a better one.

Query xcrun to acquire macOS's SDK path

I noticed that clice cannot find all standard headers (, , etc.), which is not the case when running on Linux, so I referred to clangd's code. In short, when running on macOS, clangd will invoke xcrun to get the SDK path (detectSysroot and append it into the compile commands, so I port queryXcrun to clice and imitate this behavior in mangleCommand.

Use std::iota instead of std::ranges::iota

Currently std::ranges::iota is also not supported by libc++. It looks like std::iota does exactly the same thing here.

Build

Now I can build clice with lld and llvm-19, installed by following commands:

brew install llvm lld

export PATH="/opt/homebrew/opt/llvm/bin:$PATH"
export LDFLAGS="-L/opt/homebrew/opt/llvm/lib/c++ -L/opt/homebrew/opt/llvm/lib/unwind -lunwind"

The macOS version is Sonoma 14.7.2 (23H311). The SDK version is 15.2 (Apple clang version 16.0.0 (clang-1600.0.26.6)).

Test

[brandon@Brandons-MBP clice]$ build/bin/clice-tests --test-dir tests                  
[==========] Running 68 tests from 11 test suites.
[----------] Global test environment set-up.
[----------] 1 test from SourceCode
[ RUN      ] SourceCode.Remeasure
[       OK ] SourceCode.Remeasure (0 ms)
[----------] 1 test from SourceCode (0 ms total)

[----------] 5 tests from URI
[ RUN      ] URI.Basic
[       OK ] URI.Basic (0 ms)
[ RUN      ] URI.Copy
[       OK ] URI.Copy (0 ms)
[ RUN      ] URI.Eq
[       OK ] URI.Eq (0 ms)
[ RUN      ] URI.File
[       OK ] URI.File (0 ms)
[ RUN      ] URI.Parse
[       OK ] URI.Parse (0 ms)
[----------] 5 tests from URI (0 ms total)

[----------] 3 tests from clice
[ RUN      ] clice.Command
[       OK ] clice.Command (0 ms)
[ RUN      ] clice.Diagnostic
[       OK ] clice.Diagnostic (0 ms)
[ RUN      ] clice.coroutine
[       OK ] clice.coroutine (0 ms)
[----------] 3 tests from clice (0 ms total)

[----------] 5 tests from Compiler
[ RUN      ] Compiler.buildAST
[       OK ] Compiler.buildAST (25 ms)
[ RUN      ] Compiler.ComputeBounds
warning: no such sysroot directory: '/Library/Developer/CommandLineTools/SDKs/MacOSX.sdk'
[       OK ] Compiler.ComputeBounds (4 ms)
[ RUN      ] Compiler.buildPCH
[       OK ] Compiler.buildPCH (48 ms)
[ RUN      ] Compiler.buildPCM
[       OK ] Compiler.buildPCM (8 ms)
[ RUN      ] Compiler.codeCompleteAt
COMPLETION: inline
COMPLETION: int
[       OK ] Compiler.codeCompleteAt (3 ms)
[----------] 5 tests from Compiler (90 ms total)

[----------] 3 tests from Directive
[ RUN      ] Directive.Include
[       OK ] Directive.Include (3 ms)
[ RUN      ] Directive.Condition
[       OK ] Directive.Condition (4 ms)
[ RUN      ] Directive.Macro
[       OK ] Directive.Macro (4 ms)
[----------] 3 tests from Directive (11 ms total)

[----------] 2 tests from Module
[ RUN      ] Module.Scan
[       OK ] Module.Scan (307 ms)
[ RUN      ] Module.Normal
[       OK ] Module.Normal (4 ms)
[----------] 2 tests from Module (312 ms total)

[----------] 20 tests from TemplateResolver
[ RUN      ] TemplateResolver.TypeParameterType
[       OK ] TemplateResolver.TypeParameterType (5 ms)
[ RUN      ] TemplateResolver.SingleLevel
[       OK ] TemplateResolver.SingleLevel (4 ms)
[ RUN      ] TemplateResolver.SingleLevelNotDependent
[       OK ] TemplateResolver.SingleLevelNotDependent (3 ms)
[ RUN      ] TemplateResolver.MultiLevel
[       OK ] TemplateResolver.MultiLevel (4 ms)
[ RUN      ] TemplateResolver.MultiLevelNotDependent
[       OK ] TemplateResolver.MultiLevelNotDependent (3 ms)
[ RUN      ] TemplateResolver.ArgumentDependent
[       OK ] TemplateResolver.ArgumentDependent (4 ms)
[ RUN      ] TemplateResolver.AliasArgument
[       OK ] TemplateResolver.AliasArgument (5 ms)
[ RUN      ] TemplateResolver.AliasDependent
[       OK ] TemplateResolver.AliasDependent (4 ms)
[ RUN      ] TemplateResolver.AliasTemplate
[       OK ] TemplateResolver.AliasTemplate (4 ms)
[ RUN      ] TemplateResolver.BaseDependent
[       OK ] TemplateResolver.BaseDependent (4 ms)
[ RUN      ] TemplateResolver.MultiNested
[       OK ] TemplateResolver.MultiNested (4 ms)
[ RUN      ] TemplateResolver.OuterDependentMemberClass
[       OK ] TemplateResolver.OuterDependentMemberClass (5 ms)
[ RUN      ] TemplateResolver.InnerDependentMemberClass
[       OK ] TemplateResolver.InnerDependentMemberClass (4 ms)
[ RUN      ] TemplateResolver.InnerDependentPartialMemberClass
[       OK ] TemplateResolver.InnerDependentPartialMemberClass (3 ms)
[ RUN      ] TemplateResolver.PartialSpecialization
[       OK ] TemplateResolver.PartialSpecialization (3 ms)
[ RUN      ] TemplateResolver.PartialDefaultArgument
[       OK ] TemplateResolver.PartialDefaultArgument (3 ms)
[ RUN      ] TemplateResolver.DefaultArgument
[       OK ] TemplateResolver.DefaultArgument (5 ms)
[ RUN      ] TemplateResolver.PackExpansion
[       OK ] TemplateResolver.PackExpansion (3 ms)
[ RUN      ] TemplateResolver.BasePackExpansion
[       OK ] TemplateResolver.BasePackExpansion (4 ms)
[ RUN      ] TemplateResolver.Standard
[       OK ] TemplateResolver.Standard (1304 ms)
[----------] 20 tests from TemplateResolver (1388 ms total)

[----------] 2 tests from Feature
[ RUN      ] Feature.CodeCompletion
[       OK ] Feature.CodeCompletion (4 ms)
[ RUN      ] Feature.SemanticTokens
[       OK ] Feature.SemanticTokens (0 ms)
[----------] 2 tests from Feature (4 ms total)

[----------] 13 tests from FoldingRange
[ RUN      ] FoldingRange.Namespace
[       OK ] FoldingRange.Namespace (3 ms)
[ RUN      ] FoldingRange.Enum
[       OK ] FoldingRange.Enum (3 ms)
[ RUN      ] FoldingRange.RecordDecl
[       OK ] FoldingRange.RecordDecl (3 ms)
[ RUN      ] FoldingRange.CXXRecordDeclAndMemberMethod
[       OK ] FoldingRange.CXXRecordDeclAndMemberMethod (4 ms)
[ RUN      ] FoldingRange.LambdaCapture
[       OK ] FoldingRange.LambdaCapture (5 ms)
[ RUN      ] FoldingRange.LambdaExpression
[       OK ] FoldingRange.LambdaExpression (3 ms)
[ RUN      ] FoldingRange.FnParas
[       OK ] FoldingRange.FnParas (3 ms)
[ RUN      ] FoldingRange.FnBody
[       OK ] FoldingRange.FnBody (3 ms)
[ RUN      ] FoldingRange.FnCall
[       OK ] FoldingRange.FnCall (3 ms)
[ RUN      ] FoldingRange.CompoundStmt
[       OK ] FoldingRange.CompoundStmt (4 ms)
[ RUN      ] FoldingRange.InitializeList
[       OK ] FoldingRange.InitializeList (4 ms)
[ RUN      ] FoldingRange.AccessControlBlock
[       OK ] FoldingRange.AccessControlBlock (3 ms)
[ RUN      ] FoldingRange.Macro
[       OK ] FoldingRange.Macro (3 ms)
[----------] 13 tests from FoldingRange (50 ms total)

[----------] 6 tests from Index
[ RUN      ] Index.Test
Total size: 0k
[       OK ] Index.Test (3 ms)
[ RUN      ] Index.ClassTemplate
[       OK ] Index.ClassTemplate (4 ms)
[ RUN      ] Index.FunctionTemplate
[       OK ] Index.FunctionTemplate (5 ms)
[ RUN      ] Index.AliasTemplate
[       OK ] Index.AliasTemplate (5 ms)
[ RUN      ] Index.VarTemplate
[       OK ] Index.VarTemplate (4 ms)
[ RUN      ] Index.Concept
[       OK ] Index.Concept (3 ms)
[----------] 6 tests from Index (27 ms total)

[----------] 8 tests from Support
[ RUN      ] Support.Equal
[       OK ] Support.Equal (0 ms)
[ RUN      ] Support.Less
[       OK ] Support.Less (0 ms)
[ RUN      ] Support.NormalEnum
[       OK ] Support.NormalEnum (0 ms)
[ RUN      ] Support.MaskEnum
[       OK ] Support.MaskEnum (0 ms)
[ RUN      ] Support.JSON
[       OK ] Support.JSON (0 ms)
[ RUN      ] Support.StatefulSerde
[       OK ] Support.StatefulSerde (0 ms)
[ RUN      ] Support.Struct
[       OK ] Support.Struct (0 ms)
[ RUN      ] Support.Inheritance
[       OK ] Support.Inheritance (0 ms)
[----------] 8 tests from Support (0 ms total)

[----------] Global test environment tear-down
[==========] 68 tests from 11 test suites ran. (1885 ms total)
[  PASSED  ] 68 tests.

[brandon@Brandons-MBP clice]$ build/bin/clice                       
[2025-01-05 22:31:30.761] [WARN] No config file specified; using default configuration.
[2025-01-05 22:31:30.767] [INFO] Server started in socket mode at 127.0.0.1:50051
^C
[brandon@Brandons-MBP clice]$