internal/rosa/llvm: remove project/runtime helper

More remnants from early days, these are not reusable at all but that was not known at the time.

Signed-off-by: Ophestra <cat@gensokyo.uk>

internal/rosa/llvm.go

@@ -3,8 +3,6 @@ package rosa
 import (
 	"runtime"
 	"slices"
-	"strconv"
-	"strings"
 	"sync"
 
 	"hakurei.app/internal/pkg"
@@ -20,9 +18,6 @@ var llvmSource = newFromGitHub(
 // llvmAttr holds the attributes that will be applied to a new [pkg.Artifact]
 // containing a LLVM variant.
 type llvmAttr struct {
-	// Enabled projects and runtimes.
-	pr int
-
 	// Concatenated with default environment for PackageAttr.Env.
 	env []string
 	// Concatenated with generated entries for CMakeHelper.Cache.
@@ -38,86 +33,12 @@ type llvmAttr struct {
 	patches []KV
 }
 
-const (
-	llvmProjectClang = 1 << iota
-	llvmProjectLld
-
-	llvmProjectAll = 1<<iota - 1
-
-	llvmRuntimeCompilerRT = 1 << iota
-	llvmRuntimeLibunwind
-	llvmRuntimeLibc
-	llvmRuntimeLibcxx
-	llvmRuntimeLibcxxABI
-	llvmRuntimeLibclc
-
-	llvmAll        = 1<<iota - 1
-	llvmRuntimeAll = llvmAll - (2 * llvmProjectAll) - 1
-)
-
-// llvmFlagName resolves a llvmAttr.flags project or runtime flag to its name.
-func llvmFlagName(flag int) string {
-	switch flag {
-	case llvmProjectClang:
-		return "clang"
-	case llvmProjectLld:
-		return "lld"
-
-	case llvmRuntimeCompilerRT:
-		return "compiler-rt"
-	case llvmRuntimeLibunwind:
-		return "libunwind"
-	case llvmRuntimeLibc:
-		return "libc"
-	case llvmRuntimeLibcxx:
-		return "libcxx"
-	case llvmRuntimeLibcxxABI:
-		return "libcxxabi"
-	case llvmRuntimeLibclc:
-		return "libclc"
-
-	default:
-		panic("invalid flag " + strconv.Itoa(flag))
-	}
-}
-
 // newLLVMVariant returns a [pkg.Artifact] containing a LLVM variant.
 func (t Toolchain) newLLVMVariant(variant string, attr *llvmAttr) pkg.Artifact {
 	if attr == nil {
 		panic("LLVM attr must be non-nil")
 	}
 
-	var projects, runtimes []string
-	for i := 1; i < llvmProjectAll; i <<= 1 {
-		if attr.pr&i != 0 {
-			projects = append(projects, llvmFlagName(i))
-		}
-	}
-	for i := (llvmProjectAll + 1) << 1; i < llvmRuntimeAll; i <<= 1 {
-		if attr.pr&i != 0 {
-			runtimes = append(runtimes, llvmFlagName(i))
-		}
-	}
-
-	var script string
-
-	cache := []KV{
-		{"CMAKE_BUILD_TYPE", "Release"},
-
-		{"LLVM_HOST_TRIPLE", `"${ROSA_TRIPLE}"`},
-		{"LLVM_DEFAULT_TARGET_TRIPLE", `"${ROSA_TRIPLE}"`},
-	}
-	if len(projects) > 0 {
-		cache = append(cache, []KV{
-			{"LLVM_ENABLE_PROJECTS", `"${ROSA_LLVM_PROJECTS}"`},
-		}...)
-	}
-	if len(runtimes) > 0 {
-		cache = append(cache, []KV{
-			{"LLVM_ENABLE_RUNTIMES", `"${ROSA_LLVM_RUNTIMES}"`},
-		}...)
-	}
-
 	cmakeAppend := []string{"llvm"}
 	if attr.append != nil {
 		cmakeAppend = attr.append
@@ -126,19 +47,14 @@ func (t Toolchain) newLLVMVariant(variant string, attr *llvmAttr) pkg.Artifact {
 	return t.NewPackage("llvm", llvmVersion, llvmSource, &PackageAttr{
 		Patches:   slices.Concat(attr.patches, llvmPatches),
 		NonStage0: attr.nonStage0,
-
-		Env: slices.Concat([]string{
-			"ROSA_LLVM_PROJECTS=" + strings.Join(projects, ";"),
-			"ROSA_LLVM_RUNTIMES=" + strings.Join(runtimes, ";"),
-		}, attr.env),
-
+		Env:       attr.env,
 		Flag:      TExclusive,
 	}, &CMakeHelper{
 		Variant: variant,
 
-		Cache:  slices.Concat(cache, attr.cmake),
+		Cache:  attr.cmake,
 		Append: cmakeAppend,
-		Script: script + attr.script,
+		Script: attr.script,
 	},
 		Python,
 		Perl,
@@ -184,6 +100,11 @@ func (t Toolchain) newLLVM() (musl, compilerRT, runtimes, clang pkg.Artifact) {
 			"LDFLAGS="+earlyLDFLAGS(false),
 		),
 		cmake: []KV{
+			{"CMAKE_BUILD_TYPE", "Release"},
+
+			{"LLVM_HOST_TRIPLE", `"${ROSA_TRIPLE}"`},
+			{"LLVM_DEFAULT_TARGET_TRIPLE", `"${ROSA_TRIPLE}"`},
+
 			// libc++ not yet available
 			{"CMAKE_CXX_COMPILER_TARGET", ""},
 
@@ -232,8 +153,13 @@ ln -s \
 		env: stage0ExclConcat(t, []string{},
 			"LDFLAGS="+earlyLDFLAGS(false),
 		),
-		pr: llvmRuntimeLibunwind | llvmRuntimeLibcxx | llvmRuntimeLibcxxABI,
 		cmake: slices.Concat([]KV{
+			{"CMAKE_BUILD_TYPE", "Release"},
+
+			{"LLVM_HOST_TRIPLE", `"${ROSA_TRIPLE}"`},
+			{"LLVM_DEFAULT_TARGET_TRIPLE", `"${ROSA_TRIPLE}"`},
+			{"LLVM_ENABLE_RUNTIMES", "'libunwind;libcxx;libcxxabi'"},
+
 			{"LIBUNWIND_USE_COMPILER_RT", "ON"},
 			{"LIBCXX_HAS_MUSL_LIBC", "ON"},
 			{"LIBCXX_USE_COMPILER_RT", "ON"},
@@ -254,13 +180,18 @@ ln -s \
 	})
 
 	clang = t.newLLVMVariant("clang", &llvmAttr{
-		pr: llvmProjectClang | llvmProjectLld,
 		env: stage0ExclConcat(t, []string{},
 			"CFLAGS="+earlyCFLAGS,
 			"CXXFLAGS="+earlyCXXFLAGS(),
 			"LDFLAGS="+earlyLDFLAGS(false),
 		),
 		cmake: slices.Concat([]KV{
+			{"CMAKE_BUILD_TYPE", "Release"},
+
+			{"LLVM_HOST_TRIPLE", `"${ROSA_TRIPLE}"`},
+			{"LLVM_DEFAULT_TARGET_TRIPLE", `"${ROSA_TRIPLE}"`},
+			{"LLVM_ENABLE_PROJECTS", "'clang;lld'"},
+
 			{"LLVM_ENABLE_LIBCXX", "ON"},
 			{"LLVM_USE_LINKER", "lld"},
 
@@ -335,6 +266,11 @@ func init() {
 		f: func(t Toolchain) (pkg.Artifact, string) {
 			return t.newLLVMVariant("libclc", &llvmAttr{
 				cmake: []KV{
+					{"CMAKE_BUILD_TYPE", "Release"},
+
+					{"LLVM_HOST_TRIPLE", `"${ROSA_TRIPLE}"`},
+					{"LLVM_DEFAULT_TARGET_TRIPLE", `"${ROSA_TRIPLE}"`},
+
 					{"LIBCLC_TARGETS_TO_BUILD", "all"},
 				},
 				append: []string{"libclc"},