From b02519b9f5ecdf721491b1e5263478dced3ee04c Mon Sep 17 00:00:00 2001
From: user0-07161 <user0thenyancat@proton.me>
Date: Tue, 4 Nov 2025 06:32:36 +0000
Subject: [PATCH] feat: initial support for haiku

---
 cmake/flags.cmake                        | 2 ++
 cmake/os.cmake                           | 4 ++++
 src/3rdparty/libethash/endian.h          | 2 +-
 src/base/kernel/Platform_unix.cpp        | 2 +-
 src/crypto/common/VirtualMemory_unix.cpp | 7 +++++--
 src/version.h                            | 2 ++
 6 files changed, 15 insertions(+), 4 deletions(-)

diff --git a/cmake/flags.cmake b/cmake/flags.cmake
index 3b711ac94..a36d18256 100644
--- a/cmake/flags.cmake
+++ b/cmake/flags.cmake
@@ -46,6 +46,8 @@ if (CMAKE_CXX_COMPILER_ID MATCHES GNU)
         else()
             set(CMAKE_EXE_LINKER_FLAGS "${CMAKE_EXE_LINKER_FLAGS} -static -Wl,--large-address-aware")
         endif()
+    elseif(CMAKE_SYSTEM_NAME STREQUAL "Haiku")
+        set(CMAKE_EXE_LINKER_FLAGS "${CMAKE_EXE_LINKER_FLAGS} -static-libgcc")
     else()
         set(CMAKE_EXE_LINKER_FLAGS "${CMAKE_EXE_LINKER_FLAGS} -static-libgcc -static-libstdc++")
     endif()
diff --git a/cmake/os.cmake b/cmake/os.cmake
index 749611923..3025e0c09 100644
--- a/cmake/os.cmake
+++ b/cmake/os.cmake
@@ -19,6 +19,8 @@ else()
         set(XMRIG_OS_FREEBSD ON)
     elseif(CMAKE_SYSTEM_NAME STREQUAL OpenBSD)
         set(XMRIG_OS_OPENBSD ON)
+    elseif(CMAKE_SYSTEM_NAME STREQUAL "Haiku")
+        set(XMRIG_OS_HAIKU ON)
     endif()
 endif()
 
@@ -47,6 +49,8 @@ elseif(XMRIG_OS_UNIX)
         add_definitions(-DXMRIG_OS_FREEBSD)
     elseif (XMRIG_OS_OPENBSD)
         add_definitions(-DXMRIG_OS_OPENBSD)
+    elseif (XMRIG_OS_HAIKU)
+        add_definitions(-DXMRIG_OS_HAIKU)
     endif()
 endif()
 
diff --git a/src/3rdparty/libethash/endian.h b/src/3rdparty/libethash/endian.h
index f960d7429..deb57620a 100644
--- a/src/3rdparty/libethash/endian.h
+++ b/src/3rdparty/libethash/endian.h
@@ -31,7 +31,7 @@
 #include <libkern/OSByteOrder.h>
 #define ethash_swap_u32(input_) OSSwapInt32(input_)
 #define ethash_swap_u64(input_) OSSwapInt64(input_)
-#elif defined(__FreeBSD__) || defined(__DragonFly__) || defined(__NetBSD__)
+#elif defined(__FreeBSD__) || defined(__DragonFly__) || defined(__NetBSD__) || defined(__HAIKU__)
 #define ethash_swap_u32(input_) bswap32(input_)
 #define ethash_swap_u64(input_) bswap64(input_)
 #elif defined(__OpenBSD__)
diff --git a/src/base/kernel/Platform_unix.cpp b/src/base/kernel/Platform_unix.cpp
index 0bfa4ff84..e53fe58d5 100644
--- a/src/base/kernel/Platform_unix.cpp
+++ b/src/base/kernel/Platform_unix.cpp
@@ -71,7 +71,7 @@ char *xmrig::Platform::createUserAgent()
 
 
 #ifndef XMRIG_FEATURE_HWLOC
-#if defined(__DragonFly__) || defined(XMRIG_OS_OPENBSD)
+#if defined(__DragonFly__) || defined(XMRIG_OS_OPENBSD) || defined(XMRIG_OS_HAIKU)
 
 bool xmrig::Platform::setThreadAffinity(uint64_t cpu_id)
 {
diff --git a/src/crypto/common/VirtualMemory_unix.cpp b/src/crypto/common/VirtualMemory_unix.cpp
index 003b92e45..fa9a3ccb2 100644
--- a/src/crypto/common/VirtualMemory_unix.cpp
+++ b/src/crypto/common/VirtualMemory_unix.cpp
@@ -86,7 +86,7 @@ bool xmrig::VirtualMemory::isHugepagesAvailable()
 {
 #   ifdef XMRIG_OS_LINUX
     return std::ifstream("/proc/sys/vm/nr_hugepages").good() || std::ifstream("/sys/devices/system/node/node0/hugepages/hugepages-2048kB/nr_hugepages").good();
-#   elif defined(XMRIG_OS_MACOS) && defined(XMRIG_ARM)
+#   elif defined(XMRIG_OS_MACOS) && defined(XMRIG_ARM) || defined(XMRIG_OS_HAIKU)
     return false;
 #   else
     return true;
@@ -156,7 +156,8 @@ void *xmrig::VirtualMemory::allocateExecutableMemory(size_t size, bool hugePages
     if (!mem) {
         mem = mmap(0, size, PROT_READ | PROT_WRITE | SECURE_PROT_EXEC, MAP_PRIVATE | MAP_ANONYMOUS, -1, 0);
     }
-
+#   elif defined(XMRIG_OS_HAIKU)
+    void *mem = mmap(0, size, PROT_READ | PROT_WRITE | PROT_EXEC, MAP_PRIVATE | MAP_ANONYMOUS, -1, 0);
 #   else
 
     void *mem = nullptr;
@@ -181,6 +182,8 @@ void *xmrig::VirtualMemory::allocateLargePagesMemory(size_t size)
     void *mem = mmap(0, size, PROT_READ | PROT_WRITE, MAP_PRIVATE | MAP_ANON, VM_FLAGS_SUPERPAGE_SIZE_2MB, 0);
 #   elif defined(XMRIG_OS_FREEBSD)
     void *mem = mmap(0, size, PROT_READ | PROT_WRITE, MAP_PRIVATE | MAP_ANONYMOUS | MAP_ALIGNED_SUPER | MAP_PREFAULT_READ, -1, 0);
+#   elif defined(XMRIG_OS_HAIKU)
+    void *mem = nullptr;
 #   else
     void *mem = mmap(0, size, PROT_READ | PROT_WRITE, MAP_PRIVATE | MAP_ANONYMOUS | MAP_HUGETLB | MAP_POPULATE | hugePagesFlag(hugePageSize()), 0, 0);
 #   endif
diff --git a/src/version.h b/src/version.h
index ce36b0afe..15a713516 100644
--- a/src/version.h
+++ b/src/version.h
@@ -66,6 +66,8 @@
 #    define APP_OS "FreeBSD"
 #elif defined XMRIG_OS_OPENBSD
 #    define APP_OS "OpenBSD"
+#elif defined XMRIG_OS_HAIKU
+#    define APP_OS "Haiku"
 #else
 #    define APP_OS "Unknown OS"
 #endif