Merge branch 'llvm18'

Upgrades the LLVM, Clang, and LLD dependencies to LLVM 18.x

Related to ziglang#16270

.github/workflows/ci.yaml

@@ -4,6 +4,7 @@ on:
   push:
     branches:
       - master
+      - llvm18
 concurrency:
   # Cancels pending runs when a PR gets updated.
   group: ${{ github.head_ref || github.run_id }}-${{ github.actor }}

CMakeLists.txt

@@ -140,9 +140,9 @@ else()
     set(ZIG_SYSTEM_LIBCXX "stdc++" CACHE STRING "system libcxx name for build.zig")
 endif()
 
-find_package(llvm 17)
-find_package(clang 17)
-find_package(lld 17)
+find_package(llvm 18)
+find_package(clang 18)
+find_package(lld 18)
 
 if(ZIG_STATIC_ZLIB)
     if (MSVC)
@@ -526,42 +526,54 @@ set(ZIG_STAGE2_SOURCES
     "${CMAKE_SOURCE_DIR}/lib/std/zig/system/x86.zig"
     "${CMAKE_SOURCE_DIR}/lib/std/zig/tokenizer.zig"
     "${CMAKE_SOURCE_DIR}/src/Air.zig"
+    "${CMAKE_SOURCE_DIR}/src/Builtin.zig"
     "${CMAKE_SOURCE_DIR}/src/Compilation.zig"
     "${CMAKE_SOURCE_DIR}/src/Compilation/Config.zig"
+    "${CMAKE_SOURCE_DIR}/src/DarwinPosixSpawn.zig"
+    "${CMAKE_SOURCE_DIR}/src/InternPool.zig"
     "${CMAKE_SOURCE_DIR}/src/Liveness.zig"
+    "${CMAKE_SOURCE_DIR}/src/Liveness/Verify.zig"
     "${CMAKE_SOURCE_DIR}/src/Module.zig"
     "${CMAKE_SOURCE_DIR}/src/Package.zig"
     "${CMAKE_SOURCE_DIR}/src/Package/Fetch.zig"
+    "${CMAKE_SOURCE_DIR}/src/Package/Fetch/git.zig"
+    "${CMAKE_SOURCE_DIR}/src/Package/Manifest.zig"
+    "${CMAKE_SOURCE_DIR}/src/Package/Module.zig"
     "${CMAKE_SOURCE_DIR}/src/RangeSet.zig"
     "${CMAKE_SOURCE_DIR}/src/Sema.zig"
+    "${CMAKE_SOURCE_DIR}/src/Sema/bitcast.zig"
+    "${CMAKE_SOURCE_DIR}/src/Sema/comptime_ptr_access.zig"
     "${CMAKE_SOURCE_DIR}/src/Value.zig"
     "${CMAKE_SOURCE_DIR}/src/arch/aarch64/CodeGen.zig"
     "${CMAKE_SOURCE_DIR}/src/arch/aarch64/Emit.zig"
     "${CMAKE_SOURCE_DIR}/src/arch/aarch64/Mir.zig"
-    "${CMAKE_SOURCE_DIR}/src/arch/aarch64/bits.zig"
     "${CMAKE_SOURCE_DIR}/src/arch/aarch64/abi.zig"
+    "${CMAKE_SOURCE_DIR}/src/arch/aarch64/bits.zig"
     "${CMAKE_SOURCE_DIR}/src/arch/arm/CodeGen.zig"
     "${CMAKE_SOURCE_DIR}/src/arch/arm/Emit.zig"
     "${CMAKE_SOURCE_DIR}/src/arch/arm/Mir.zig"
-    "${CMAKE_SOURCE_DIR}/src/arch/arm/bits.zig"
     "${CMAKE_SOURCE_DIR}/src/arch/arm/abi.zig"
+    "${CMAKE_SOURCE_DIR}/src/arch/arm/bits.zig"
     "${CMAKE_SOURCE_DIR}/src/arch/riscv64/CodeGen.zig"
     "${CMAKE_SOURCE_DIR}/src/arch/riscv64/Emit.zig"
     "${CMAKE_SOURCE_DIR}/src/arch/riscv64/Mir.zig"
-    "${CMAKE_SOURCE_DIR}/src/arch/riscv64/bits.zig"
     "${CMAKE_SOURCE_DIR}/src/arch/riscv64/abi.zig"
+    "${CMAKE_SOURCE_DIR}/src/arch/riscv64/bits.zig"
     "${CMAKE_SOURCE_DIR}/src/arch/sparc64/CodeGen.zig"
     "${CMAKE_SOURCE_DIR}/src/arch/sparc64/Emit.zig"
     "${CMAKE_SOURCE_DIR}/src/arch/sparc64/Mir.zig"
-    "${CMAKE_SOURCE_DIR}/src/arch/sparc64/bits.zig"
     "${CMAKE_SOURCE_DIR}/src/arch/sparc64/abi.zig"
+    "${CMAKE_SOURCE_DIR}/src/arch/sparc64/bits.zig"
     "${CMAKE_SOURCE_DIR}/src/arch/wasm/CodeGen.zig"
     "${CMAKE_SOURCE_DIR}/src/arch/wasm/Emit.zig"
     "${CMAKE_SOURCE_DIR}/src/arch/wasm/Mir.zig"
+    "${CMAKE_SOURCE_DIR}/src/arch/wasm/abi.zig"
+    "${CMAKE_SOURCE_DIR}/src/arch/x86/bits.zig"
     "${CMAKE_SOURCE_DIR}/src/arch/x86_64/CodeGen.zig"
     "${CMAKE_SOURCE_DIR}/src/arch/x86_64/Disassembler.zig"
     "${CMAKE_SOURCE_DIR}/src/arch/x86_64/Emit.zig"
     "${CMAKE_SOURCE_DIR}/src/arch/x86_64/Encoding.zig"
+    "${CMAKE_SOURCE_DIR}/src/arch/x86_64/Lower.zig"
     "${CMAKE_SOURCE_DIR}/src/arch/x86_64/Mir.zig"
     "${CMAKE_SOURCE_DIR}/src/arch/x86_64/abi.zig"
     "${CMAKE_SOURCE_DIR}/src/arch/x86_64/bits.zig"
@@ -574,7 +586,17 @@ set(ZIG_STAGE2_SOURCES
     "${CMAKE_SOURCE_DIR}/src/codegen/c.zig"
     "${CMAKE_SOURCE_DIR}/src/codegen/c/Type.zig"
     "${CMAKE_SOURCE_DIR}/src/codegen/llvm.zig"
+    "${CMAKE_SOURCE_DIR}/src/codegen/llvm/BitcodeReader.zig"
+    "${CMAKE_SOURCE_DIR}/src/codegen/llvm/Builder.zig"
     "${CMAKE_SOURCE_DIR}/src/codegen/llvm/bindings.zig"
+    "${CMAKE_SOURCE_DIR}/src/codegen/llvm/bitcode_writer.zig"
+    "${CMAKE_SOURCE_DIR}/src/codegen/llvm/ir.zig"
+    "${CMAKE_SOURCE_DIR}/src/codegen/spirv.zig"
+    "${CMAKE_SOURCE_DIR}/src/codegen/spirv/Assembler.zig"
+    "${CMAKE_SOURCE_DIR}/src/codegen/spirv/Module.zig"
+    "${CMAKE_SOURCE_DIR}/src/codegen/spirv/Section.zig"
+    "${CMAKE_SOURCE_DIR}/src/codegen/spirv/spec.zig"
+    "${CMAKE_SOURCE_DIR}/src/crash_report.zig"
     "${CMAKE_SOURCE_DIR}/src/glibc.zig"
     "${CMAKE_SOURCE_DIR}/src/introspect.zig"
     "${CMAKE_SOURCE_DIR}/src/libcxx.zig"
@@ -586,7 +608,9 @@ set(ZIG_STAGE2_SOURCES
     "${CMAKE_SOURCE_DIR}/src/link/Coff/Atom.zig"
     "${CMAKE_SOURCE_DIR}/src/link/Coff/ImportTable.zig"
     "${CMAKE_SOURCE_DIR}/src/link/Coff/Object.zig"
+    "${CMAKE_SOURCE_DIR}/src/link/Coff/Relocation.zig"
     "${CMAKE_SOURCE_DIR}/src/link/Coff/lld.zig"
+    "${CMAKE_SOURCE_DIR}/src/link/Dwarf.zig"
     "${CMAKE_SOURCE_DIR}/src/link/Elf.zig"
     "${CMAKE_SOURCE_DIR}/src/link/Elf/Archive.zig"
     "${CMAKE_SOURCE_DIR}/src/link/Elf/Atom.zig"
@@ -599,6 +623,7 @@ set(ZIG_STAGE2_SOURCES
     "${CMAKE_SOURCE_DIR}/src/link/Elf/eh_frame.zig"
     "${CMAKE_SOURCE_DIR}/src/link/Elf/file.zig"
     "${CMAKE_SOURCE_DIR}/src/link/Elf/gc.zig"
+    "${CMAKE_SOURCE_DIR}/src/link/Elf/merge_section.zig"
     "${CMAKE_SOURCE_DIR}/src/link/Elf/relocatable.zig"
     "${CMAKE_SOURCE_DIR}/src/link/Elf/relocation.zig"
     "${CMAKE_SOURCE_DIR}/src/link/Elf/synthetic_sections.zig"
@@ -617,9 +642,9 @@ set(ZIG_STAGE2_SOURCES
     "${CMAKE_SOURCE_DIR}/src/link/MachO/UnwindInfo.zig"
     "${CMAKE_SOURCE_DIR}/src/link/MachO/ZigObject.zig"
     "${CMAKE_SOURCE_DIR}/src/link/MachO/dead_strip.zig"
-    "${CMAKE_SOURCE_DIR}/src/link/MachO/dyld_info/bind.zig"
     "${CMAKE_SOURCE_DIR}/src/link/MachO/dyld_info/Rebase.zig"
     "${CMAKE_SOURCE_DIR}/src/link/MachO/dyld_info/Trie.zig"
+    "${CMAKE_SOURCE_DIR}/src/link/MachO/dyld_info/bind.zig"
     "${CMAKE_SOURCE_DIR}/src/link/MachO/eh_frame.zig"
     "${CMAKE_SOURCE_DIR}/src/link/MachO/fat.zig"
     "${CMAKE_SOURCE_DIR}/src/link/MachO/file.zig"
@@ -629,15 +654,32 @@ set(ZIG_STAGE2_SOURCES
     "${CMAKE_SOURCE_DIR}/src/link/MachO/synthetic.zig"
     "${CMAKE_SOURCE_DIR}/src/link/MachO/thunks.zig"
     "${CMAKE_SOURCE_DIR}/src/link/MachO/uuid.zig"
+    "${CMAKE_SOURCE_DIR}/src/link/NvPtx.zig"
     "${CMAKE_SOURCE_DIR}/src/link/Plan9.zig"
     "${CMAKE_SOURCE_DIR}/src/link/Plan9/aout.zig"
-    "${CMAKE_SOURCE_DIR}/src/link/Wasm.zig"
-    "${CMAKE_SOURCE_DIR}/src/link/msdos-stub.bin"
+    "${CMAKE_SOURCE_DIR}/src/link/SpirV.zig"
+    "${CMAKE_SOURCE_DIR}/src/link/SpirV/BinaryModule.zig"
+    "${CMAKE_SOURCE_DIR}/src/link/SpirV/deduplicate.zig"
+    "${CMAKE_SOURCE_DIR}/src/link/SpirV/lower_invocation_globals.zig"
+    "${CMAKE_SOURCE_DIR}/src/link/SpirV/prune_unused.zig"
     "${CMAKE_SOURCE_DIR}/src/link/StringTable.zig"
+    "${CMAKE_SOURCE_DIR}/src/link/Wasm.zig"
+    "${CMAKE_SOURCE_DIR}/src/link/Wasm/Archive.zig"
+    "${CMAKE_SOURCE_DIR}/src/link/Wasm/Atom.zig"
+    "${CMAKE_SOURCE_DIR}/src/link/Wasm/Object.zig"
+    "${CMAKE_SOURCE_DIR}/src/link/Wasm/Symbol.zig"
+    "${CMAKE_SOURCE_DIR}/src/link/Wasm/ZigObject.zig"
+    "${CMAKE_SOURCE_DIR}/src/link/Wasm/file.zig"
+    "${CMAKE_SOURCE_DIR}/src/link/Wasm/types.zig"
+    "${CMAKE_SOURCE_DIR}/src/link/aarch64.zig"
+    "${CMAKE_SOURCE_DIR}/src/link/riscv.zig"
+    "${CMAKE_SOURCE_DIR}/src/link/table_section.zig"
     "${CMAKE_SOURCE_DIR}/src/link/tapi.zig"
     "${CMAKE_SOURCE_DIR}/src/link/tapi/Tokenizer.zig"
     "${CMAKE_SOURCE_DIR}/src/link/tapi/parse.zig"
+    "${CMAKE_SOURCE_DIR}/src/link/tapi/parse/test.zig"
     "${CMAKE_SOURCE_DIR}/src/link/tapi/yaml.zig"
+    "${CMAKE_SOURCE_DIR}/src/link/tapi/yaml/test.zig"
     "${CMAKE_SOURCE_DIR}/src/main.zig"
     "${CMAKE_SOURCE_DIR}/src/mingw.zig"
     "${CMAKE_SOURCE_DIR}/src/musl.zig"
@@ -685,7 +727,7 @@ if(MSVC)
     set(EXE_LDFLAGS "${EXE_LDFLAGS} /debug:fastlink")
   endif()
 else()
-  set(EXE_CXX_FLAGS "-std=c++17 -D__STDC_CONSTANT_MACROS -D__STDC_FORMAT_MACROS -D__STDC_LIMIT_MACROS -D_GNU_SOURCE -fvisibility-inlines-hidden -fno-exceptions -fno-rtti -Werror=type-limits -Wno-missing-braces -Wno-comment")
+  set(EXE_CXX_FLAGS "-std=c++17 -D__STDC_CONSTANT_MACROS -D__STDC_FORMAT_MACROS -D__STDC_LIMIT_MACROS -D_GNU_SOURCE -fvisibility-inlines-hidden -fno-exceptions -fno-rtti -Wno-type-limits -Wno-missing-braces -Wno-comment")
   set(EXE_LDFLAGS " ")
   if(MINGW)
     set(EXE_CXX_FLAGS "${EXE_CXX_FLAGS} -Wno-format")
@@ -866,9 +908,9 @@ target_include_directories(zig2 PUBLIC "${CMAKE_SOURCE_DIR}/stage1")
 target_link_libraries(zig2 LINK_PUBLIC zigcpp)
 
 if(MSVC)
-  target_link_libraries(zig2 LINK_PUBLIC ntdll.lib)
+  target_link_libraries(zig2 LINK_PUBLIC ntdll.lib ws2_32.lib)
 elseif(MINGW)
-  target_link_libraries(zig2 LINK_PUBLIC ntdll)
+  target_link_libraries(zig2 LINK_PUBLIC ntdll ws2_32)
 endif()
 
 if(NOT MSVC)

build.zig

@@ -334,6 +334,9 @@ pub fn build(b: *std.Build) !void {
         }
         if (target.result.os.tag == .windows) {
             inline for (.{ exe, check_case_exe }) |artifact| {
+                // LLVM depends on networking as of version 18.
+                artifact.linkSystemLibrary("ws2_32");
+
                 artifact.linkSystemLibrary("version");
                 artifact.linkSystemLibrary("uuid");
                 artifact.linkSystemLibrary("ole32");
@@ -650,7 +653,7 @@ const exe_cflags = [_][]const u8{
     "-fvisibility-inlines-hidden",
     "-fno-exceptions",
     "-fno-rtti",
-    "-Werror=type-limits",
+    "-Wno-type-limits",
     "-Wno-missing-braces",
     "-Wno-comment",
 };
@@ -1039,6 +1042,7 @@ const clang_libs = [_][]const u8{
     "clangAST",
     "clangParse",
     "clangSema",
+    "clangAPINotes",
     "clangBasic",
     "clangEdit",
     "clangLex",
@@ -1068,6 +1072,7 @@ const llvm_libs = [_][]const u8{
     "LLVMXRay",
     "LLVMLibDriver",
     "LLVMDlltoolDriver",
+    "LLVMTextAPIBinaryReader",
     "LLVMCoverage",
     "LLVMLineEditor",
     "LLVMXCoreDisassembler",
@@ -1169,6 +1174,7 @@ const llvm_libs = [_][]const u8{
     "LLVMAArch64Desc",
     "LLVMAArch64Utils",
     "LLVMAArch64Info",
+    "LLVMOrcDebugging",
     "LLVMOrcJIT",
     "LLVMWindowsDriver",
     "LLVMMCJIT",
@@ -1188,17 +1194,21 @@ const llvm_libs = [_][]const u8{
     "LLVMMCDisassembler",
     "LLVMLTO",
     "LLVMPasses",
+    "LLVMHipStdPar",
     "LLVMCFGuard",
     "LLVMCoroutines",
     "LLVMipo",
     "LLVMVectorize",
     "LLVMLinker",
     "LLVMInstrumentation",
     "LLVMFrontendOpenMP",
+    "LLVMFrontendOffloading",
     "LLVMFrontendOpenACC",
     "LLVMFrontendHLSL",
+    "LLVMFrontendDriver",
     "LLVMExtensions",
     "LLVMDWARFLinkerParallel",
+    "LLVMDWARFLinkerClassic",
     "LLVMDWARFLinker",
     "LLVMGlobalISel",
     "LLVMMIRParser",

ci/aarch64-linux-debug.sh

@@ -8,7 +8,7 @@ set -e
 ARCH="$(uname -m)"
 TARGET="$ARCH-linux-musl"
 MCPU="baseline"
-CACHE_BASENAME="zig+llvm+lld+clang-$TARGET-0.12.0-dev.203+d3bc1cfc4"
+CACHE_BASENAME="zig+llvm+lld+clang-$TARGET-0.13.0-dev.130+98a30acad"
 PREFIX="$HOME/deps/$CACHE_BASENAME"
 ZIG="$PREFIX/bin/zig"
 

ci/aarch64-linux-release.sh

@@ -8,7 +8,7 @@ set -e
 ARCH="$(uname -m)"
 TARGET="$ARCH-linux-musl"
 MCPU="baseline"
-CACHE_BASENAME="zig+llvm+lld+clang-$TARGET-0.12.0-dev.203+d3bc1cfc4"
+CACHE_BASENAME="zig+llvm+lld+clang-$TARGET-0.13.0-dev.130+98a30acad"
 PREFIX="$HOME/deps/$CACHE_BASENAME"
 ZIG="$PREFIX/bin/zig"
 

ci/aarch64-macos-debug.sh

@@ -9,10 +9,16 @@ set -e
 ZIGDIR="$PWD"
 TARGET="$ARCH-macos-none"
 MCPU="baseline"
-CACHE_BASENAME="zig+llvm+lld+clang-$TARGET-0.12.0-dev.467+0345d7866"
+CACHE_BASENAME="zig+llvm+lld+clang-$TARGET-0.13.0-dev.130+98a30acad"
 PREFIX="$HOME/$CACHE_BASENAME"
 ZIG="$PREFIX/bin/zig"
 
+if [ ! -d "$PREFIX" ]; then
+  cd $HOME
+  curl -L -O "https://ziglang.org/deps/$CACHE_BASENAME.tar.xz"
+  tar xf "$CACHE_BASENAME.tar.xz"
+fi
+
 cd $ZIGDIR
 
 # Make the `zig version` number consistent.

ci/aarch64-macos-release.sh

@@ -9,10 +9,16 @@ set -e
 ZIGDIR="$PWD"
 TARGET="$ARCH-macos-none"
 MCPU="baseline"
-CACHE_BASENAME="zig+llvm+lld+clang-$TARGET-0.12.0-dev.467+0345d7866"
+CACHE_BASENAME="zig+llvm+lld+clang-$TARGET-0.13.0-dev.130+98a30acad"
 PREFIX="$HOME/$CACHE_BASENAME"
 ZIG="$PREFIX/bin/zig"
 
+if [ ! -d "$PREFIX" ]; then
+  cd $HOME
+  curl -L -O "https://ziglang.org/deps/$CACHE_BASENAME.tar.xz"
+  tar xf "$CACHE_BASENAME.tar.xz"
+fi
+
 cd $ZIGDIR
 
 # Make the `zig version` number consistent.

ci/aarch64-windows.ps1

@@ -1,5 +1,5 @@
 $TARGET = "$($Env:ARCH)-windows-gnu"
-$ZIG_LLVM_CLANG_LLD_NAME = "zig+llvm+lld+clang-$TARGET-0.12.0-dev.2087+e9a18010b"
+$ZIG_LLVM_CLANG_LLD_NAME = "zig+llvm+lld+clang-$TARGET-0.13.0-dev.130+98a30acad"
 $MCPU = "baseline"
 $ZIG_LLVM_CLANG_LLD_URL = "https://ziglang.org/deps/$ZIG_LLVM_CLANG_LLD_NAME.zip"
 $PREFIX_PATH = "$(Get-Location)\..\$ZIG_LLVM_CLANG_LLD_NAME"

ci/x86_64-linux-debug.sh

@@ -8,7 +8,7 @@ set -e
 ARCH="$(uname -m)"
 TARGET="$ARCH-linux-musl"
 MCPU="baseline"
-CACHE_BASENAME="zig+llvm+lld+clang-$TARGET-0.12.0-dev.203+d3bc1cfc4"
+CACHE_BASENAME="zig+llvm+lld+clang-$TARGET-0.13.0-dev.130+98a30acad"
 PREFIX="$HOME/deps/$CACHE_BASENAME"
 ZIG="$PREFIX/bin/zig"
 

ci/x86_64-linux-release.sh

@@ -8,7 +8,7 @@ set -e
 ARCH="$(uname -m)"
 TARGET="$ARCH-linux-musl"
 MCPU="baseline"
-CACHE_BASENAME="zig+llvm+lld+clang-$TARGET-0.12.0-dev.203+d3bc1cfc4"
+CACHE_BASENAME="zig+llvm+lld+clang-$TARGET-0.13.0-dev.130+98a30acad"
 PREFIX="$HOME/deps/$CACHE_BASENAME"
 ZIG="$PREFIX/bin/zig"
 

ci/x86_64-macos-release.sh

@@ -6,18 +6,17 @@ set -e
 ZIGDIR="$PWD"
 TARGET="$ARCH-macos-none"
 MCPU="baseline"
-CACHE_BASENAME="zig+llvm+lld+clang-$TARGET-0.12.0-dev.467+0345d7866"
+CACHE_BASENAME="zig+llvm+lld+clang-$TARGET-0.13.0-dev.130+98a30acad"
 PREFIX="$HOME/$CACHE_BASENAME"
 JOBS="-j3"
-
-rm -rf $PREFIX
-cd $HOME
-
-curl -L -O "https://ziglang.org/deps/$CACHE_BASENAME.tar.xz"
-tar xf "$CACHE_BASENAME.tar.xz"
-
 ZIG="$PREFIX/bin/zig"
 
+if [ ! -d "$PREFIX" ]; then
+  cd $HOME
+  curl -L -O "https://ziglang.org/deps/$CACHE_BASENAME.tar.xz"
+  tar xf "$CACHE_BASENAME.tar.xz"
+fi
+
 cd $ZIGDIR
 
 # Make the `zig version` number consistent.

ci/x86_64-windows-debug.ps1

@@ -1,10 +1,20 @@
 $TARGET = "$($Env:ARCH)-windows-gnu"
-$ZIG_LLVM_CLANG_LLD_NAME = "zig+llvm+lld+clang-$TARGET-0.12.0-dev.2073+402fe565a"
+$ZIG_LLVM_CLANG_LLD_NAME = "zig+llvm+lld+clang-$TARGET-0.13.0-dev.130+98a30acad"
 $MCPU = "baseline"
+$ZIG_LLVM_CLANG_LLD_URL = "https://ziglang.org/deps/$ZIG_LLVM_CLANG_LLD_NAME.zip"
 $PREFIX_PATH = "$($Env:USERPROFILE)\$ZIG_LLVM_CLANG_LLD_NAME"
 $ZIG = "$PREFIX_PATH\bin\zig.exe"
 $ZIG_LIB_DIR = "$(Get-Location)\lib"
 
+if (!(Test-Path "$PREFIX_PATH.zip")) {
+    Write-Output "Downloading $ZIG_LLVM_CLANG_LLD_URL"
+    Invoke-WebRequest -Uri "$ZIG_LLVM_CLANG_LLD_URL" -OutFile "$PREFIX_PATH.zip"
+
+    Write-Output "Extracting..."
+    Add-Type -AssemblyName System.IO.Compression.FileSystem ;
+    [System.IO.Compression.ZipFile]::ExtractToDirectory("$PREFIX_PATH.zip", "$PREFIX_PATH\..")
+}
+
 function CheckLastExitCode {
     if (!$?) {
         exit 1
@@ -25,6 +35,12 @@ Remove-Item -Path 'build-debug' -Recurse -Force -ErrorAction Ignore
 New-Item -Path 'build-debug' -ItemType Directory
 Set-Location -Path 'build-debug'
 
+# Override the cache directories because they won't actually help other CI runs
+# which will be testing alternate versions of zig, and ultimately would just
+# fill up space on the hard drive for no reason.
+$Env:ZIG_GLOBAL_CACHE_DIR="$(Get-Location)\zig-global-cache"
+$Env:ZIG_LOCAL_CACHE_DIR="$(Get-Location)\zig-local-cache"
+
 # CMake gives a syntax error when file paths with backward slashes are used.
 # Here, we use forward slashes only to work around this.
 & cmake .. `