ldc: Add support for GNU/Hurd

Author: yelninei

driver/linker-gcc.cpp

@@ -200,7 +200,8 @@ void ArgsBuilder::addLTOLinkFlags() {
       global.params.targetTriple->isOSFreeBSD() ||
       global.params.targetTriple->isOSNetBSD() ||
       global.params.targetTriple->isOSOpenBSD() ||
-      global.params.targetTriple->isOSDragonFly()) {
+      global.params.targetTriple->isOSDragonFly() ||
+      global.params.targetTriple->isOSHurd()) {
     // LLD supports LLVM LTO natively, do not add the plugin itself.
     // Otherwise, assume that ld.gold or ld.bfd is used with plugin support.
     addLTOGoldPluginFlags(!isLld);
@@ -435,6 +436,7 @@ void ArgsBuilder::addCppStdlibLinkFlags(const llvm::Triple &triple) {
   case llvm::Triple::NetBSD:
   case llvm::Triple::OpenBSD:
   case llvm::Triple::DragonFly:
+  case llvm::Triple::Hurd:
     args.push_back("-lstdc++");
     break;
   case llvm::Triple::Darwin:
@@ -689,6 +691,7 @@ void ArgsBuilder::addDefaultPlatformLibs() {
   case llvm::Triple::NetBSD:
   case llvm::Triple::OpenBSD:
   case llvm::Triple::DragonFly:
+  case llvm::Triple::Hurd:
     addSoname = true;
     args.push_back("-lpthread");
     args.push_back("-lm");

driver/main.cpp

@@ -918,6 +918,13 @@ void registerPredefinedTargetVersions() {
     VersionCondition::addPredefinedGlobalIdent("CppRuntime_LLVM");
     VersionCondition::addPredefinedGlobalIdent("CppRuntime_Clang"); // legacy
     break;
+  case llvm::Triple::Hurd:
+    VersionCondition::addPredefinedGlobalIdent("Hurd");
+    VersionCondition::addPredefinedGlobalIdent("Posix");
+    VersionCondition::addPredefinedGlobalIdent("CRuntime_Glibc");
+    VersionCondition::addPredefinedGlobalIdent("CppRuntime_GNU");
+    VersionCondition::addPredefinedGlobalIdent("CppRuntime_Gcc"); // legacy
+    break;
   default:
     if (triple.getEnvironment() == llvm::Triple::Android) {
       VersionCondition::addPredefinedGlobalIdent("Android");

gen/modules.cpp

@@ -104,7 +104,7 @@ RegistryStyle getModuleRegistryStyle() {
   if (t.isOSWindows() || t.getEnvironment() == llvm::Triple::Android ||
       t.isOSBinFormatWasm() || t.isOSDarwin() || t.isOSLinux() ||
       t.isOSFreeBSD() || t.isOSNetBSD() || t.isOSOpenBSD() ||
-      t.isOSDragonFly()) {
+      t.isOSDragonFly() || t.isOSHurd()) {
     return RegistryStyle::section;
   }
 

gen/target.cpp

@@ -149,6 +149,8 @@ void Target::_init(const Param &params) {
     os = OS_DragonFlyBSD;
   } else if (triple.isOSSolaris()) {
     os = OS_Solaris;
+  else if (triple.isOSHurd()) {
+    os = OS_Hurd;
   } else {
     os = OS_Freestanding;
   }

runtime/CMakeLists.txt

@@ -94,7 +94,7 @@ else()
 endif()
 
 set(SHARED_LIBS_SUPPORTED OFF)
-if("${TARGET_SYSTEM}" MATCHES "Windows|Linux|FreeBSD|DragonFly|APPLE")
+if("${TARGET_SYSTEM}" MATCHES "Windows|Linux|FreeBSD|DragonFly|APPLE|GNU")
     set(SHARED_LIBS_SUPPORTED ON)
 endif()
 
@@ -175,6 +175,7 @@ file(GLOB_RECURSE DRUNTIME_D_BIONIC  ${RUNTIME_DIR}/src/core/sys/bionic/*.d)
 file(GLOB_RECURSE DRUNTIME_D_DARWIN  ${RUNTIME_DIR}/src/core/sys/darwin/*.d)
 file(GLOB_RECURSE DRUNTIME_D_DRAGONFLYBSD ${RUNTIME_DIR}/src/core/sys/dragonflybsd/*.d)
 file(GLOB_RECURSE DRUNTIME_D_FREEBSD ${RUNTIME_DIR}/src/core/sys/freebsd/*.d)
+file(GLOB_RECURSE DRUNTIME_D_HURD    ${RUNTIME_DIR}/src/core/sys/hurd/*.d)
 file(GLOB_RECURSE DRUNTIME_D_LINUX   ${RUNTIME_DIR}/src/core/sys/linux/*.d)
 file(GLOB_RECURSE DRUNTIME_D_NETBSD  ${RUNTIME_DIR}/src/core/sys/netbsd/*.d)
 file(GLOB_RECURSE DRUNTIME_D_OPENBSD ${RUNTIME_DIR}/src/core/sys/openbsd/*.d)
@@ -183,9 +184,9 @@ file(GLOB_RECURSE DRUNTIME_D_SOLARIS ${RUNTIME_DIR}/src/core/sys/solaris/*.d)
 file(GLOB_RECURSE DRUNTIME_D_WINDOWS ${RUNTIME_DIR}/src/core/sys/windows/*.d)
 list(REMOVE_ITEM DRUNTIME_D
     ${DRUNTIME_D_BIONIC}  ${DRUNTIME_D_DARWIN}  ${DRUNTIME_D_DRAGONFLYBSD}
-    ${DRUNTIME_D_FREEBSD} ${DRUNTIME_D_LINUX}   ${DRUNTIME_D_NETBSD}
-    ${DRUNTIME_D_OPENBSD} ${DRUNTIME_D_POSIX}   ${DRUNTIME_D_SOLARIS}
-    ${DRUNTIME_D_WINDOWS}
+    ${DRUNTIME_D_FREEBSD} ${DRUNTIME_D_HURD}    ${DRUNTIME_D_LINUX}
+    ${DRUNTIME_D_NETBSD}  ${DRUNTIME_D_OPENBSD} ${DRUNTIME_D_POSIX}
+    ${DRUNTIME_D_SOLARIS} ${DRUNTIME_D_WINDOWS}
 )
 if("${TARGET_SYSTEM}" MATCHES "Windows")
     list(APPEND DRUNTIME_D ${DRUNTIME_D_WINDOWS})
@@ -206,6 +207,8 @@ elseif("${TARGET_SYSTEM}" MATCHES "UNIX")
         list(APPEND DRUNTIME_D ${DRUNTIME_D_OPENBSD})
     elseif("${TARGET_SYSTEM}" MATCHES "SunOS")
         list(APPEND DRUNTIME_D ${DRUNTIME_D_SOLARIS})
+    elseif("${TARGET_SYSTEM}" MATCHES "GNU")
+        list(APPEND DRUNTIME_D ${DRUNTIME_D_HURD})
     endif()
 endif()
 

runtime/druntime/src/rt/sections_ldc.d

@@ -31,6 +31,7 @@ else version (FreeBSD) {}
 else version (DragonFlyBSD) {}
 else version (NetBSD) {}
 else version (OpenBSD) {}
+else version (Hurd) {}
 else version (Windows) {}
 else version (LDC):