Haiku: Configuration support

Added more support for configuration for Haiku cross-compile
builds.

src/coreclr/.nuget/Directory.Build.props

@@ -33,7 +33,7 @@
     transport packages to flow dependencies anymore -->
     <CreatePackedPackage Condition="'$(CreatePackedPackage)' == ''">false</CreatePackedPackage>
 
-    <SupportedPackageOSGroups Condition="'$(SupportedPackageOSGroups)' == ''">windows;osx;android;linux;freebsd;netbsd;illumos;solaris</SupportedPackageOSGroups>
+    <SupportedPackageOSGroups Condition="'$(SupportedPackageOSGroups)' == ''">windows;osx;android;linux;freebsd;netbsd;illumos;solaris;haiku</SupportedPackageOSGroups>
     <SupportedPackageOSGroups>;$(SupportedPackageOSGroups);</SupportedPackageOSGroups>
 
     <_isSupportedOSGroup>true</_isSupportedOSGroup>
@@ -105,6 +105,9 @@
   <ItemGroup Condition="$(SupportedPackageOSGroups.Contains(';solaris;'))">
     <OfficialBuildRID Include="solaris-x64" />
   </ItemGroup>
+  <ItemGroup Condition="$(SupportedPackageOSGroups.Contains(';haiku;'))">
+    <OfficialBuildRID Include="haiku-x64" />
+  </ItemGroup>
   <ItemGroup Condition="$(SupportedPackageOSGroups.Contains(';windows;'))">
     <OfficialBuildRID Include="win-x86">
       <Platform>x86</Platform>

src/coreclr/crossgen-corelib.proj

@@ -22,7 +22,7 @@
 
   <PropertyGroup>
     <BuildDll>true</BuildDll>
-    <BuildDll Condition="'$(TargetOS)' == 'netbsd' or '$(TargetOS)' == 'illumos' or '$(TargetOS)' == 'solaris'">false</BuildDll>
+    <BuildDll Condition="'$(TargetOS)' == 'netbsd' or '$(TargetOS)' == 'illumos' or '$(TargetOS)' == 'solaris' or '$(TargetOS)' == 'haiku'">false</BuildDll>
     <BuildDll Condition="'$(TargetArchitecture)' == 'riscv64'">false</BuildDll>
 
     <BuildPdb>false</BuildPdb>

src/coreclr/debug/createdump/CMakeLists.txt

@@ -101,7 +101,7 @@ endif(CLR_CMAKE_HOST_OSX)
         createdump_static
         corguids
         dbgutil
-        dl
+        ${CMAKE_DL_LIBS}
     )
 
 endif(CLR_CMAKE_HOST_WIN32)

src/coreclr/debug/dbgutil/CMakeLists.txt

@@ -19,11 +19,11 @@ set(DBGUTIL_SOURCES
     dbgutil.cpp
 )
 
-if(CLR_CMAKE_TARGET_LINUX)
+if(CLR_CMAKE_TARGET_LINUX OR CLR_CMAKE_TARGET_HAIKU)
     list(APPEND DBGUTIL_SOURCES
         elfreader.cpp
     )
-endif(CLR_CMAKE_TARGET_LINUX)
+endif(CLR_CMAKE_TARGET_LINUX OR CLR_CMAKE_TARGET_HAIKU)
 
 if(CLR_CMAKE_TARGET_OSX)
     list(APPEND DBGUTIL_SOURCES

src/coreclr/dlls/mscordac/CMakeLists.txt

@@ -31,9 +31,9 @@ else(CLR_CMAKE_HOST_WIN32)
     # Add dependency on export file
     add_custom_target(mscordaccore_exports DEPENDS ${EXPORTS_FILE})
 
-    if(CLR_CMAKE_HOST_OSX OR CLR_CMAKE_HOST_FREEBSD OR CLR_CMAKE_HOST_NETBSD OR CLR_CMAKE_HOST_SUNOS)
+    if(CLR_CMAKE_HOST_OSX OR CLR_CMAKE_HOST_FREEBSD OR CLR_CMAKE_HOST_NETBSD OR CLR_CMAKE_HOST_SUNOS OR CLR_CMAKE_HOST_HAIKU)
         generate_exports_file(${DEF_SOURCES} ${EXPORTS_FILE})
-    endif(CLR_CMAKE_HOST_OSX OR CLR_CMAKE_HOST_FREEBSD OR CLR_CMAKE_HOST_NETBSD OR CLR_CMAKE_HOST_SUNOS)
+    endif(CLR_CMAKE_HOST_OSX OR CLR_CMAKE_HOST_FREEBSD OR CLR_CMAKE_HOST_NETBSD OR CLR_CMAKE_HOST_SUNOS OR CLR_CMAKE_HOST_HAIKU)
 
     if(CORECLR_SET_RPATH AND CLR_CMAKE_HOST_OSX AND CLR_CMAKE_HOST_ARCH_ARM64)
       set(CMAKE_BUILD_WITH_INSTALL_NAME_DIR ON)
@@ -80,7 +80,7 @@ else(CLR_CMAKE_HOST_WIN32)
         list(APPEND CLR_DAC_SOURCES libredefines.S)
     endif(CLR_CMAKE_HOST_LINUX)
 
-    if(CLR_CMAKE_HOST_LINUX OR CLR_CMAKE_HOST_FREEBSD OR CLR_CMAKE_HOST_NETBSD OR CLR_CMAKE_HOST_SUNOS)
+    if(CLR_CMAKE_HOST_LINUX OR CLR_CMAKE_HOST_FREEBSD OR CLR_CMAKE_HOST_NETBSD OR CLR_CMAKE_HOST_SUNOS OR CLR_CMAKE_HOST_HAIKU)
         # This option is necessary to ensure that the overloaded delete operator defined inside
         # of the utilcode will be used instead of the standard library delete operator.
         set(CMAKE_SHARED_LINKER_FLAGS "${CMAKE_SHARED_LINKER_FLAGS} -Xlinker -Bsymbolic")
@@ -93,7 +93,7 @@ else(CLR_CMAKE_HOST_WIN32)
         # These options are used to force every object to be included even if it's unused.
         set(START_WHOLE_ARCHIVE -Wl,--whole-archive)
         set(END_WHOLE_ARCHIVE -Wl,--no-whole-archive)
-    endif(CLR_CMAKE_HOST_LINUX OR CLR_CMAKE_HOST_FREEBSD OR CLR_CMAKE_HOST_NETBSD OR CLR_CMAKE_HOST_SUNOS)
+    endif(CLR_CMAKE_HOST_LINUX OR CLR_CMAKE_HOST_FREEBSD OR CLR_CMAKE_HOST_NETBSD OR CLR_CMAKE_HOST_SUNOS OR CLR_CMAKE_HOST_HAIKU)
 
     set_exports_linker_option(${EXPORTS_FILE})
 endif(CLR_CMAKE_HOST_WIN32)

src/coreclr/dlls/mscordbi/CMakeLists.txt

@@ -45,11 +45,11 @@ else(CLR_CMAKE_HOST_WIN32)
     set(EXPORTS_FILE ${CMAKE_CURRENT_BINARY_DIR}/mscordbi.exports)
     generate_exports_file(${DEF_SOURCES} ${EXPORTS_FILE})
 
-    if(CLR_CMAKE_HOST_LINUX OR CLR_CMAKE_HOST_FREEBSD OR CLR_CMAKE_HOST_NETBSD OR CLR_CMAKE_HOST_SUNOS)
+    if(CLR_CMAKE_HOST_LINUX OR CLR_CMAKE_HOST_FREEBSD OR CLR_CMAKE_HOST_NETBSD OR CLR_CMAKE_HOST_SUNOS OR CLR_CMAKE_HOST_HAIKU)
         # This option is necessary to ensure that the overloaded new/delete operators defined inside
         # of the utilcode will be used instead of the standard library delete operator.
         set(CMAKE_SHARED_LINKER_FLAGS "${CMAKE_SHARED_LINKER_FLAGS} -Xlinker -Bsymbolic")
-    endif(CLR_CMAKE_HOST_LINUX OR CLR_CMAKE_HOST_FREEBSD OR CLR_CMAKE_HOST_NETBSD OR CLR_CMAKE_HOST_SUNOS)
+    endif(CLR_CMAKE_HOST_LINUX OR CLR_CMAKE_HOST_FREEBSD OR CLR_CMAKE_HOST_NETBSD OR CLR_CMAKE_HOST_SUNOS OR CLR_CMAKE_HOST_HAIKU)
 
     set_exports_linker_option(${EXPORTS_FILE})
 endif(CLR_CMAKE_HOST_WIN32)
@@ -101,6 +101,12 @@ elseif(CLR_CMAKE_HOST_UNIX)
         mscordaccore
     )
 
+    if(CLR_CMAKE_HOST_HAIKU)
+        list(APPEND COREDBI_LIBRARIES
+            network
+        )
+    endif(CLR_CMAKE_HOST_HAIKU)
+
     # Before llvm 16, lld was setting `--undefined-version` by default. The default was
     # flipped to `--no-undefined-version` in lld 16, so we will explicitly set it to
     # `--undefined-version` for our use-case.

src/coreclr/dlls/mscoree/coreclr/CMakeLists.txt

@@ -35,7 +35,7 @@ else(CLR_CMAKE_HOST_WIN32)
     set(EXPORTS_FILE ${CMAKE_CURRENT_BINARY_DIR}/coreclr.exports)
     generate_exports_file(${DEF_SOURCES} ${EXPORTS_FILE})
 
-    if(CLR_CMAKE_TARGET_LINUX OR CLR_CMAKE_TARGET_FREEBSD OR CLR_CMAKE_TARGET_NETBSD OR CLR_CMAKE_TARGET_SUNOS)
+    if(CLR_CMAKE_TARGET_LINUX OR CLR_CMAKE_TARGET_FREEBSD OR CLR_CMAKE_TARGET_NETBSD OR CLR_CMAKE_TARGET_SUNOS OR CLR_CMAKE_HOST_HAIKU)
         # This option is necessary to ensure that the overloaded delete operator defined inside
         # of the utilcode will be used instead of the standard library delete operator.
         add_linker_flag("-Wl,-Bsymbolic")
@@ -48,7 +48,7 @@ else(CLR_CMAKE_HOST_WIN32)
         # These options are used to force every object to be included even if it's unused.
         set(START_WHOLE_ARCHIVE -Wl,--whole-archive)
         set(END_WHOLE_ARCHIVE -Wl,--no-whole-archive)
-    endif(CLR_CMAKE_TARGET_LINUX OR CLR_CMAKE_TARGET_FREEBSD OR CLR_CMAKE_TARGET_NETBSD OR CLR_CMAKE_TARGET_SUNOS)
+    endif(CLR_CMAKE_TARGET_LINUX OR CLR_CMAKE_TARGET_FREEBSD OR CLR_CMAKE_TARGET_NETBSD OR CLR_CMAKE_TARGET_SUNOS OR CLR_CMAKE_HOST_HAIKU)
 
     if(CLR_CMAKE_TARGET_OSX)
         # These options are used to force every object to be included even if it's unused.
@@ -147,6 +147,10 @@ elseif(CLR_CMAKE_TARGET_SUNOS)
     list(APPEND CORECLR_LIBRARIES
         socket
     )
+elseif(CLR_CMAKE_TARGET_HAIKU)
+    list(APPEND CORECLR_LIBRARIES
+        network
+    )
 endif(CLR_CMAKE_TARGET_LINUX)
 
 if(FEATURE_PERFTRACING)

src/coreclr/ilasm/CMakeLists.txt

@@ -54,7 +54,7 @@ if(CLR_CMAKE_HOST_UNIX)
   set_source_files_properties( prebuilt/asmparse.cpp PROPERTIES COMPILE_FLAGS "-O0" )
 endif(CLR_CMAKE_HOST_UNIX)
 
-if(CLR_CMAKE_HOST_LINUX OR CLR_CMAKE_HOST_FREEBSD OR CLR_CMAKE_HOST_NETBSD OR CLR_CMAKE_HOST_SUNOS)
+if(CLR_CMAKE_HOST_LINUX OR CLR_CMAKE_HOST_FREEBSD OR CLR_CMAKE_HOST_NETBSD OR CLR_CMAKE_HOST_SUNOS OR CLR_CMAKE_HOST_HAIKU)
     # This option is necessary to ensure that the overloaded delete operator defined inside
     # of the utilcode will be used instead of the standard library delete operator.
     set(CMAKE_SHARED_LINKER_FLAGS "${CMAKE_SHARED_LINKER_FLAGS} -Xlinker -Bsymbolic")
@@ -63,7 +63,7 @@ if(CLR_CMAKE_HOST_LINUX OR CLR_CMAKE_HOST_FREEBSD OR CLR_CMAKE_HOST_NETBSD OR CL
     # ensure proper resolving of circular references between a subset of the libraries.
     set(START_LIBRARY_GROUP -Wl,--start-group)
     set(END_LIBRARY_GROUP -Wl,--end-group)
-endif(CLR_CMAKE_HOST_LINUX OR CLR_CMAKE_HOST_FREEBSD OR CLR_CMAKE_HOST_NETBSD OR CLR_CMAKE_HOST_SUNOS)
+endif(CLR_CMAKE_HOST_LINUX OR CLR_CMAKE_HOST_FREEBSD OR CLR_CMAKE_HOST_NETBSD OR CLR_CMAKE_HOST_SUNOS OR CLR_CMAKE_HOST_HAIKU)
 
 add_executable_clr(ilasm
   ${ILASM_SOURCES}

src/coreclr/ildasm/exe/CMakeLists.txt

@@ -47,7 +47,7 @@ if (CLR_CMAKE_TARGET_WIN32)
     list(APPEND ILDASM_SOURCES ${ILDASM_HEADERS})
 endif(CLR_CMAKE_TARGET_WIN32)
 
-if(CLR_CMAKE_HOST_LINUX OR CLR_CMAKE_HOST_FREEBSD OR CLR_CMAKE_HOST_NETBSD OR CLR_CMAKE_HOST_SUNOS)
+if(CLR_CMAKE_HOST_LINUX OR CLR_CMAKE_HOST_FREEBSD OR CLR_CMAKE_HOST_NETBSD OR CLR_CMAKE_HOST_SUNOS OR CLR_CMAKE_HOST_HAIKU)
     # This option is necessary to ensure that the overloaded delete operator defined inside
     # of the utilcode will be used instead of the standard library delete operator.
     set(CMAKE_SHARED_LINKER_FLAGS "${CMAKE_SHARED_LINKER_FLAGS} -Xlinker -Bsymbolic")
@@ -56,7 +56,7 @@ if(CLR_CMAKE_HOST_LINUX OR CLR_CMAKE_HOST_FREEBSD OR CLR_CMAKE_HOST_NETBSD OR CL
     # ensure proper resolving of circular references between a subset of the libraries.
     set(START_LIBRARY_GROUP -Wl,--start-group)
     set(END_LIBRARY_GROUP -Wl,--end-group)
-endif(CLR_CMAKE_HOST_LINUX OR CLR_CMAKE_HOST_FREEBSD OR CLR_CMAKE_HOST_NETBSD OR CLR_CMAKE_HOST_SUNOS)
+endif(CLR_CMAKE_HOST_LINUX OR CLR_CMAKE_HOST_FREEBSD OR CLR_CMAKE_HOST_NETBSD OR CLR_CMAKE_HOST_SUNOS OR CLR_CMAKE_HOST_HAIKU)
 
 add_executable_clr(ildasm
     ${ILDASM_SOURCES}

src/coreclr/nativeaot/Runtime/CMakeLists.txt

@@ -141,6 +141,10 @@ else()
   # Compile unwinding only for the current compilation target architecture
   add_definitions(-D_LIBUNWIND_IS_NATIVE_ONLY)
 
+  if(CLR_CMAKE_TARGET_HAIKU)
+    add_definitions(-DPT_GNU_EH_FRAME=PT_EH_FRAME)
+  endif()
+
   list(APPEND COMMON_RUNTIME_SOURCES
     unix/PalRedhawkUnix.cpp
     unix/PalCreateDump.cpp

src/coreclr/nativeaot/Runtime/unix/config.h.in

@@ -2,6 +2,7 @@
 #define _PAL_CONFIG_H_INCLUDED 1
 
 #cmakedefine01 HAVE_AUXV_HWCAP_H
+#cmakedefine01 HAVE_UCONTEXT_H
 
 #cmakedefine01 HAVE_PRCTL_H
 #cmakedefine01 HAVE_PR_SET_PTRACER

src/coreclr/nativeaot/Runtime/unix/configure.cmake

@@ -35,8 +35,16 @@ check_library_exists(${PTHREAD_LIBRARY} pthread_getthreadid_np "" HAVE_PTHREAD_G
 
 check_function_exists(clock_nanosleep HAVE_CLOCK_NANOSLEEP)
 
-check_struct_has_member ("ucontext_t" uc_mcontext.gregs[0] ucontext.h HAVE_GREGSET_T)
-check_struct_has_member ("ucontext_t" uc_mcontext.__gregs[0] ucontext.h HAVE___GREGSET_T)
+check_include_files(ucontext.h HAVE_UCONTEXT_H)
+
+if (HAVE_UCONTEXT_H)
+  set(UCONTEXT_T_HEADER ucontext.h)
+else ()
+  set(UCONTEXT_T_HEADER signal.h)
+endif ()
+
+check_struct_has_member ("ucontext_t" uc_mcontext.gregs[0] ${UCONTEXT_T_HEADER} HAVE_GREGSET_T)
+check_struct_has_member ("ucontext_t" uc_mcontext.__gregs[0] ${UCONTEXT_T_HEADER} HAVE___GREGSET_T)
 
 set(CMAKE_EXTRA_INCLUDE_FILES)
 set(CMAKE_EXTRA_INCLUDE_FILES signal.h)

src/coreclr/pal/src/CMakeLists.txt

@@ -1,7 +1,8 @@
-if(CLR_CMAKE_TARGET_OSX OR CLR_CMAKE_TARGET_FREEBSD)
+if(CLR_CMAKE_TARGET_OSX OR CLR_CMAKE_TARGET_FREEBSD OR CLR_CMAKE_TARGET_HAIKU)
   # On OSX and *BSD, we use the libunwind that's part of the OS
+  # On Haiku, we used a special port of libunwind
   set(CLR_CMAKE_USE_SYSTEM_LIBUNWIND 1)
-endif(CLR_CMAKE_TARGET_OSX OR CLR_CMAKE_TARGET_FREEBSD)
+endif(CLR_CMAKE_TARGET_OSX OR CLR_CMAKE_TARGET_FREEBSD OR CLR_CMAKE_TARGET_HAIKU)
 
 if(NOT DEFINED ENV{ROOTFS_DIR})
   include_directories(SYSTEM /usr/local/include)
@@ -97,6 +98,10 @@ if(CLR_CMAKE_TARGET_LINUX_MUSL)
   add_definitions(-DENSURE_PRIMARY_STACK_SIZE)
 endif(CLR_CMAKE_TARGET_LINUX_MUSL)
 
+if(CLR_CMAKE_TARGET_HAIKU)
+  add_definitions(-D_GNU_SOURCE)
+endif(CLR_CMAKE_TARGET_HAIKU)
+
 # turn off capability to remove unused functions (which was enabled in debug build with sanitizers)
 set(CMAKE_SHARED_LINKER_FLAGS_DEBUG "${CMAKE_SHARED_LINKER_FLAGS_DEBUG} -Wl,--no-gc-sections")
 
@@ -230,6 +235,13 @@ if(CLR_CMAKE_TARGET_OSX)
     ${LIBUNWIND_DAC_OBJECTS}
   )
 
+  target_include_directories(coreclrpal_dac PUBLIC
+    ${CLR_SRC_NATIVE_DIR}/external/libunwind/include
+    ${CLR_SRC_NATIVE_DIR}/external/libunwind/include/tdep
+    ${CLR_ARTIFACTS_OBJ_DIR}/external/libunwind/include
+    ${CLR_ARTIFACTS_OBJ_DIR}/external/libunwind/include/tdep
+  )
+
   target_compile_definitions(coreclrpal_dac PUBLIC -DUNW_REMOTE_ONLY)
 else()
   if(NOT FEATURE_CROSSBITNESS)
@@ -239,15 +251,6 @@ else()
   endif(NOT FEATURE_CROSSBITNESS)
 endif(CLR_CMAKE_TARGET_OSX)
 
-if(NOT FEATURE_CROSSBITNESS)
-  target_include_directories(coreclrpal_dac PUBLIC
-    ${CLR_SRC_NATIVE_DIR}/external/libunwind/include
-    ${CLR_SRC_NATIVE_DIR}/external/libunwind/include/tdep
-    ${CLR_ARTIFACTS_OBJ_DIR}/external/libunwind/include
-    ${CLR_ARTIFACTS_OBJ_DIR}/external/libunwind/include/tdep
-  )
-endif(NOT FEATURE_CROSSBITNESS)
-
 # There is only one function exported in 'tracepointprovider.cpp' namely 'PAL_InitializeTracing',
 # which is guarded with '#if defined(__linux__)'. On macOS, Xcode issues the following warning:
 #
@@ -286,6 +289,14 @@ if(CLR_CMAKE_TARGET_FREEBSD)
   )
 endif(CLR_CMAKE_TARGET_FREEBSD)
 
+if(CLR_CMAKE_TARGET_HAIKU)
+  target_link_libraries(coreclrpal
+    PUBLIC
+    bsd
+    ${UNWIND_LIBS}
+  )
+endif(CLR_CMAKE_TARGET_HAIKU)
+
 if(CLR_CMAKE_TARGET_LINUX)
   # On Android, we don't need to link with gcc_s, pthread and rt
   if(NOT CLR_CMAKE_TARGET_ANDROID)

src/coreclr/pal/src/config.h.in

@@ -22,6 +22,10 @@
 #cmakedefine01 HAVE_PTHREAD_NP_H
 #cmakedefine01 HAVE_AUXV_HWCAP_H
 #cmakedefine01 HAVE_SYS_PTRACE_H
+#cmakedefine01 HAVE_SYS_UCONTEXT_H
+#cmakedefine01 HAVE_SYS_USER_H
+#cmakedefine01 HAVE_SYS_MOUNT_H
+#cmakedefine01 HAVE_UCONTEXT_H
 #cmakedefine01 HAVE_GETAUXVAL
 
 #cmakedefine01 HAVE_KQUEUE

src/coreclr/pal/src/configure.cmake

@@ -48,6 +48,10 @@ check_include_files(semaphore.h HAVE_SEMAPHORE_H)
 check_include_files(sys/prctl.h HAVE_PRCTL_H)
 check_include_files("sys/auxv.h;asm/hwcap.h" HAVE_AUXV_HWCAP_H)
 check_include_files("sys/ptrace.h" HAVE_SYS_PTRACE_H)
+check_include_files("sys/ucontext.h" HAVE_SYS_UCONTEXT_H)
+check_include_files("sys/user.h" HAVE_SYS_USER_H)
+check_include_files("sys/mount.h" HAVE_SYS_MOUNT_H)
+check_include_files(ucontext.h HAVE_UCONTEXT_H)
 check_symbol_exists(getauxval sys/auxv.h HAVE_GETAUXVAL)
 
 set(CMAKE_REQUIRED_LIBRARIES ${CMAKE_DL_LIBS})
@@ -79,7 +83,12 @@ set(CMAKE_REQUIRED_LIBRARIES)
 check_function_exists(sysctlbyname HAVE_SYSCTLBYNAME)
 check_include_files(gnu/lib-names.h HAVE_GNU_LIBNAMES_H)
 
-check_function_exists(kqueue HAVE_KQUEUE)
+if(CLR_CMAKE_TARGET_HAIKU)
+  # kqueue is broken on Haiku and does not provide the required information in the data field.
+  set(HAVE_KQUEUE 0)
+else()
+  check_function_exists(kqueue HAVE_KQUEUE)
+endif()
 
 check_library_exists(c sched_getaffinity "" HAVE_SCHED_GETAFFINITY)
 check_library_exists(c sched_setaffinity "" HAVE_SCHED_SETAFFINITY)
@@ -158,9 +167,11 @@ set(CMAKE_EXTRA_INCLUDE_FILES)
 set(CMAKE_EXTRA_INCLUDE_FILES asm/ptrace.h)
 check_type_size("struct pt_regs" PT_REGS)
 set(CMAKE_EXTRA_INCLUDE_FILES)
-set(CMAKE_EXTRA_INCLUDE_FILES signal.h)
-set(CMAKE_EXTRA_INCLUDE_FILES)
-set(CMAKE_EXTRA_INCLUDE_FILES ucontext.h)
+if(HAVE_UCONTEXT_H)
+  set(CMAKE_EXTRA_INCLUDE_FILES ucontext.h)
+else()
+  set(CMAKE_EXTRA_INCLUDE_FILES signal.h)
+endif()
 check_type_size(ucontext_t UCONTEXT_T)
 set(CMAKE_EXTRA_INCLUDE_FILES)
 set(CMAKE_EXTRA_INCLUDE_FILES pthread.h)
@@ -1245,6 +1256,11 @@ elseif(CLR_CMAKE_TARGET_SUNOS)
   set(PAL_PT_READ_D PT_READ_D)
   set(PAL_PT_WRITE_D PT_WRITE_D)
   set(HAS_FTRUNCATE_LENGTH_ISSUE 0)
+elseif(CLR_CMAKE_TARGET_HAIKU)
+  # Haiku does not have ptrace.
+  set(DEADLOCK_WHEN_THREAD_IS_SUSPENDED_WHILE_BLOCKED_ON_MUTEX 0)
+  set(HAS_FTRUNCATE_LENGTH_ISSUE 0)
+  set(HAVE_SCHED_OTHER_ASSIGNABLE 1)
 else() # Anything else is Linux
   if(NOT HAVE_LTTNG_TRACEPOINT_H AND FEATURE_EVENT_TRACE)
     unset(HAVE_LTTNG_TRACEPOINT_H CACHE)

src/coreclr/pal/tests/palsuite/exception_handling/pal_sxs/test1/CMakeLists.txt

@@ -11,10 +11,10 @@ if(CORECLR_SET_RPATH)
     set(CMAKE_BUILD_WITH_INSTALL_RPATH TRUE)
     set(CMAKE_INSTALL_RPATH "@loader_path")
   endif(CLR_CMAKE_HOST_OSX)
-  if(CLR_CMAKE_HOST_LINUX)
+  if(CLR_CMAKE_HOST_LINUX OR CLR_CMAKE_HOST_HAIKU)
     set(CMAKE_BUILD_WITH_INSTALL_RPATH TRUE)
     set(CMAKE_INSTALL_RPATH "\$ORIGIN")
-  endif(CLR_CMAKE_HOST_LINUX)
+  endif(CLR_CMAKE_HOST_LINUX OR CLR_CMAKE_HOST_HAIKU)
 endif(CORECLR_SET_RPATH)
 
 # Test DLL1

src/coreclr/scripts/coreclr_arguments.py

@@ -65,7 +65,7 @@ def __init__(self,
 
         self.valid_arches = ["x64", "x86", "arm", "arm64", "loongarch64", "riscv64", "wasm"]
         self.valid_build_types = ["Debug", "Checked", "Release"]
-        self.valid_host_os = ["windows", "osx", "linux", "illumos", "solaris", "browser", "android", "wasi"]
+        self.valid_host_os = ["windows", "osx", "linux", "illumos", "solaris", "haiku", "browser", "android", "wasi"]
 
         self.__initialize__(args)
 
@@ -175,7 +175,7 @@ def verify(self,
     def provide_default_host_os():
         """ Return a string representing the current host operating system.
 
-            Returns one of: linux, osx, windows, illumos, solaris
+            Returns one of: linux, osx, windows, illumos, solaris, haiku
         """
 
         if sys.platform == "linux" or sys.platform == "linux2":
@@ -187,6 +187,8 @@ def provide_default_host_os():
         elif sys.platform.startswith("sunos"):
             is_illumos = ('illumos' in subprocess.Popen(["uname", "-o"], stdout=subprocess.PIPE, stderr=subprocess.PIPE).communicate()[0].decode('utf-8'))
             return 'illumos' if is_illumos else 'solaris'
+        elif sys.platform == "haiku":
+            return "haiku"
         else:
             print("Unknown OS: %s" % sys.platform)
             sys.exit(1)

src/coreclr/tools/aot/crossgen2/crossgen2_publish.csproj

@@ -18,15 +18,15 @@
   <PropertyGroup Condition="'$(NativeAotSupported)' != 'true'">
     <PublishSingleFile>true</PublishSingleFile>
     <PublishReadyToRun>true</PublishReadyToRun>
-    <!-- Disable crossgen on NetBSD, illumos and Solaris for now. This can be revisited when we have full support. -->
-    <PublishReadyToRun Condition="'$(TargetOS)' == 'netbsd' Or '$(TargetOS)' == 'illumos' Or '$(TargetOS)' == 'solaris'">false</PublishReadyToRun>
+    <!-- Disable crossgen on NetBSD, illumos, Solaris, and Haiku for now. This can be revisited when we have full support. -->
+    <PublishReadyToRun Condition="'$(TargetOS)' == 'netbsd' Or '$(TargetOS)' == 'illumos' Or '$(TargetOS)' == 'solaris' Or '$(TargetOS)' == 'haiku'">false</PublishReadyToRun>
     <!-- Disable crossgen on FreeBSD when cross building from Linux. -->
     <PublishReadyToRun Condition="'$(TargetOS)' == 'freebsd' and '$(CrossBuild)' == 'true'">false</PublishReadyToRun>
     <PublishReadyToRunComposite>true</PublishReadyToRunComposite>
   </PropertyGroup>
 
   <Import Project="Sdk.targets" Sdk="Microsoft.NET.Sdk" />
-  
+
   <ItemGroup>
     <KnownFrameworkReference Remove="Microsoft.AspNetCore.App" />
     <KnownFrameworkReference Remove="Microsoft.WindowsDesktop.App" />