clang: add aliases for musl targets

extra/clang/build

@@ -2,6 +2,8 @@
 
 export DESTDIR="$1"
 
+patch -p1 < musl-targets.patch
+
 cd clang
 cmake -B build \
     -DCMAKE_INSTALL_PREFIX=/usr \

extra/clang/checksums

@@ -1,2 +1,3 @@
 3d677cb5a0258ae910719528e463a59cf270a3414e3e4807e9fefc36437474e0a5
 78c57fd0ae1cf67b61210b2d6be58aa51372161e8de66efa78a268dcdb348520b3
+b6e513e411ec87051b9211cf91e27f16109606b930ed11ef8ad4a418f818d474e9

extra/clang/patches/musl-targets.patch

@@ -0,0 +1,110 @@
+diff --git a/clang/lib/Driver/ToolChains/Gnu.cpp b/clang/lib/Driver/ToolChains/Gnu.cpp
+index e5e1b1d..7ee093f 100644
+--- a/clang/lib/Driver/ToolChains/Gnu.cpp
++++ b/clang/lib/Driver/ToolChains/Gnu.cpp
+@@ -2538,8 +2538,7 @@ void Generic_GCC::GCCInstallationDetector::AddDefaultGCCPrefixes(
+       "powerpc64-suse-linux", "powerpc-montavista-linuxspe"};
+   static const char *const PPCLELibDirs[] = {"/lib32", "/lib"};
+   static const char *const PPCLETriples[] = {"powerpcle-linux-gnu",
+-                                             "powerpcle-unknown-linux-gnu",
+-                                             "powerpcle-linux-musl"};
++                                             "powerpcle-unknown-linux-gnu"};
+ 
+   static const char *const PPC64LibDirs[] = {"/lib64", "/lib"};
+   static const char *const PPC64Triples[] = {
+@@ -2616,6 +2615,95 @@ void Generic_GCC::GCCInstallationDetector::AddDefaultGCCPrefixes(
+     return;
+   }
+ 
++  if (TargetTriple.isMusl()) {
++    static const char *const AArch64MuslTriples[] = {"aarch64-linux-musl"};
++    static const char *const ARMHFMuslTriples[] = {
++        "arm-linux-musleabihf", "armv7l-linux-musleabihf"
++    };
++    static const char *const ARMMuslTriples[] = {"arm-linux-musleabi"};
++    static const char *const X86_64MuslTriples[] = {
++        "x86_64-linux-musl",
++        "x86_64-pc-linux-musl", "x86_64-unknown-linux-musl"
++    };
++    static const char *const X86MuslTriples[] = {"i686-linux-musl"};
++    static const char *const MIPSMuslTriples[] = {
++        "mips-linux-musl", "mipsel-linux-musl",
++        "mipsel-linux-muslhf", "mips-linux-muslhf"
++    };
++    static const char *const PPCMuslTriples[] = {"powerpc-linux-musl"};
++    static const char *const PPCLEMuslTriples[] = {"powerpcle-linux-musl"};
++    static const char *const PPC64MuslTriples[] = {"powerpc64-linux-musl"};
++    static const char *const PPC64LEMuslTriples[] = {"powerpc64le-linux-musl"};
++    static const char *const RISCV64MuslTriples[] = {"riscv64-linux-musl"};
++
++    switch (TargetTriple.getArch()) {
++    case llvm::Triple::aarch64:
++      LibDirs.append(begin(AArch64LibDirs), end(AArch64LibDirs));
++      TripleAliases.append(begin(AArch64MuslTriples), end(AArch64MuslTriples));
++      BiarchLibDirs.append(begin(AArch64LibDirs), end(AArch64LibDirs));
++      BiarchTripleAliases.append(begin(AArch64MuslTriples), end(AArch64MuslTriples));
++      break;
++    case llvm::Triple::arm:
++      LibDirs.append(begin(ARMLibDirs), end(ARMLibDirs));
++      if (TargetTriple.getEnvironment() == llvm::Triple::MuslEABIHF) {
++        TripleAliases.append(begin(ARMHFMuslTriples), end(ARMHFMuslTriples));
++      } else {
++        TripleAliases.append(begin(ARMMuslTriples), end(ARMMuslTriples));
++      }
++      break;
++    case llvm::Triple::x86_64:
++      LibDirs.append(begin(X86_64LibDirs), end(X86_64LibDirs));
++      TripleAliases.append(begin(X86_64MuslTriples), end(X86_64MuslTriples));
++      BiarchLibDirs.append(begin(X86LibDirs), end(X86LibDirs));
++      BiarchTripleAliases.append(begin(X86MuslTriples), end(X86MuslTriples));
++      break;
++    case llvm::Triple::x86:
++      LibDirs.append(begin(X86LibDirs), end(X86LibDirs));
++      TripleAliases.append(begin(X86MuslTriples), end(X86MuslTriples));
++      BiarchLibDirs.append(begin(X86_64LibDirs), end(X86_64LibDirs));
++      BiarchTripleAliases.append(begin(X86_64MuslTriples), end(X86_64MuslTriples));
++      break;
++    case llvm::Triple::mips:
++      LibDirs.append(begin(MIPSLibDirs), end(MIPSLibDirs));
++      TripleAliases.append(begin(MIPSMuslTriples), end(MIPSMuslTriples));
++      break;
++    case llvm::Triple::ppc:
++      LibDirs.append(begin(PPCLibDirs), end(PPCLibDirs));
++      TripleAliases.append(begin(PPCMuslTriples), end(PPCMuslTriples));
++      BiarchLibDirs.append(begin(PPC64LibDirs), end(PPC64LibDirs));
++      BiarchTripleAliases.append(begin(PPC64MuslTriples), end(PPC64MuslTriples));
++      break;
++    case llvm::Triple::ppcle:
++      LibDirs.append(begin(PPCLELibDirs), end(PPCLELibDirs));
++      TripleAliases.append(begin(PPCLEMuslTriples), end(PPCLEMuslTriples));
++      BiarchLibDirs.append(begin(PPC64LELibDirs), end(PPC64LELibDirs));
++      BiarchTripleAliases.append(begin(PPC64LEMuslTriples), end(PPC64LEMuslTriples));
++      break;
++    case llvm::Triple::ppc64:
++      LibDirs.append(begin(PPC64LibDirs), end(PPC64LibDirs));
++      TripleAliases.append(begin(PPC64MuslTriples), end(PPC64MuslTriples));
++      BiarchLibDirs.append(begin(PPCLibDirs), end(PPCLibDirs));
++      BiarchTripleAliases.append(begin(PPCMuslTriples), end(PPCMuslTriples));
++      break;
++    case llvm::Triple::ppc64le:
++      LibDirs.append(begin(PPC64LELibDirs), end(PPC64LELibDirs));
++      TripleAliases.append(begin(PPC64LEMuslTriples), end(PPC64LEMuslTriples));
++      BiarchLibDirs.append(begin(PPCLELibDirs), end(PPCLELibDirs));
++      BiarchTripleAliases.append(begin(PPCLEMuslTriples), end(PPCLEMuslTriples));
++      break;
++    case llvm::Triple::riscv64:
++      LibDirs.append(begin(RISCV64LibDirs), end(RISCV64LibDirs));
++      TripleAliases.append(begin(RISCV64MuslTriples), end(RISCV64MuslTriples));
++      break;
++    default:
++      break;
++    }
++    TripleAliases.push_back(TargetTriple.str());
++    if (TargetTriple.str() != BiarchTriple.str())
++      BiarchTripleAliases.push_back(BiarchTriple.str());
++    return;
++  }
++
+   // Android targets should not use GNU/Linux tools or libraries.
+   if (TargetTriple.isAndroid()) {
+     static const char *const AArch64AndroidTriples[] = {

extra/clang/sources

@@ -1,2 +1,3 @@
 https://github.com/llvm/llvm-project/releases/download/llvmorg-18.1.2/clang-18.1.2.src.tar.xz clang
 https://github.com/llvm/llvm-project/releases/download/llvmorg-18.1.2/cmake-18.1.2.src.tar.xz cmake
+patches/musl-targets.patch