OpenBSD port request

[Scorpox59]

Hi gingerBill,
I would like to try Odin on OpenBSD, but it doesn't compile.

clang src/main.cpp -Wno-switch -Wno-pointer-sign -Wno-tautological-constant-out-of-range-compare -Wno-tautological-compare -Wno-macro-redefined -std=c++14 -DGIT_SHA="" -DODIN_VERSION_RAW="dev-2021-05" -g -pthread -ldl -lm -lstdc++ -o odin
In file included from src/main.cpp:3:
In file included from src/common.cpp:19:
src/gb/gb.h:201:4: error: This UNIX operating system is not supported
#error This UNIX operating system is not supported
^
src/gb/gb.h:321:12: fatal error: 'sys/sendfile.h' file not found
#include <sys/sendfile.h>
^~~~~~~~~~~~~~~~

[Platin21]

There was once a pull request for this you might want to take a look at that.
This is it #745

[ghost]

I did some of the FreeBSD port quite a while ago, and I was working on NetBSD but never finished it. I can't remember everything that I did for FreeBSD, but I think you need to add defines, you might have to change the src/gb/gb.h file. You will also need to add targets to src/build_settings.cpp, I think. And then add support to the core library (which required looking up how some things are defined in FreeBSD).

Although, much of this work for FreeBSD was done prior to the new backend, so I'm not sure what has changed - I'm not even sure if FreeBSD works anymore since the switch :D
But you can see what I did for FreeBSD Here: #734

[flashcardsmobile-admin]

I would definitely like some more OpenBSD support. When running make release-native, it reads:

./build_odin.sh release-native
+ clang++ src/main.cpp src/libtommath.cpp -Wno-switch -Wno-macro-redefined -Wno-unused-value -DODIN_VERSION_RAW="dev-2026-05" -std=c++14 -I/usr/local/include -I/usr/include -std=c++17 -fno-exceptions -fno-rtti -D__STDC_CONSTANT_MACROS -D__STDC_FORMAT_MACROS -D__STDC_LIMIT_MACROS -L/usr/lib -O3 -march=native -pthread -lm -lstdc++ -L/usr/local/lib -liconv -lLLVM -o odin
In file included from src/main.cpp:80:
src/llvm_backend.cpp:3042:3: error: use of undeclared identifier 'LLVMInitializeAArch64TargetInfo'
 3042 |                 LLVMInitializeAArch64TargetInfo();
      |                 ^
src/llvm_backend.cpp:3043:3: error: use of undeclared identifier 'LLVMInitializeAArch64Target'
 3043 |                 LLVMInitializeAArch64Target();
      |                 ^
src/llvm_backend.cpp:3044:3: error: use of undeclared identifier 'LLVMInitializeAArch64TargetMC'
 3044 |                 LLVMInitializeAArch64TargetMC();
      |                 ^
src/llvm_backend.cpp:3045:3: error: use of undeclared identifier 'LLVMInitializeAArch64AsmPrinter'
 3045 |                 LLVMInitializeAArch64AsmPrinter();
      |                 ^
src/llvm_backend.cpp:3046:3: error: use of undeclared identifier 'LLVMInitializeAArch64AsmParser'
 3046 |                 LLVMInitializeAArch64AsmParser();
      |                 ^
src/llvm_backend.cpp:3047:3: error: use of undeclared identifier 'LLVMInitializeAArch64Disassembler'
 3047 |                 LLVMInitializeAArch64Disassembler();
      |                 ^
src/llvm_backend.cpp:3051:3: error: use of undeclared identifier 'LLVMInitializeWebAssemblyTargetInfo'
 3051 |                 LLVMInitializeWebAssemblyTargetInfo();
      |                 ^
src/llvm_backend.cpp:3052:3: error: use of undeclared identifier 'LLVMInitializeWebAssemblyTarget'
 3052 |                 LLVMInitializeWebAssemblyTarget();
      |                 ^
src/llvm_backend.cpp:3053:3: error: use of undeclared identifier 'LLVMInitializeWebAssemblyTargetMC'
 3053 |                 LLVMInitializeWebAssemblyTargetMC();
      |                 ^
src/llvm_backend.cpp:3054:3: error: use of undeclared identifier 'LLVMInitializeWebAssemblyAsmPrinter'
 3054 |                 LLVMInitializeWebAssemblyAsmPrinter();
      |                 ^
src/llvm_backend.cpp:3055:3: error: use of undeclared identifier 'LLVMInitializeWebAssemblyAsmParser'
 3055 |                 LLVMInitializeWebAssemblyAsmParser();
      |                 ^
src/llvm_backend.cpp:3056:3: error: use of undeclared identifier 'LLVMInitializeWebAssemblyDisassembler'
 3056 |                 LLVMInitializeWebAssemblyDisassembler();
      |                 ^
src/llvm_backend.cpp:3059:3: error: use of undeclared identifier 'LLVMInitializeRISCVTargetInfo'; did you mean 'LLVMInitializeX86TargetInfo'?
 3059 |                 LLVMInitializeRISCVTargetInfo();
      |                 ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~
      |                 LLVMInitializeX86TargetInfo
/usr/include/llvm/Config/Targets.def:2:1: note: 'LLVMInitializeX86TargetInfo' declared here
    2 | LLVM_TARGET(X86)
      | ^
/usr/include/llvm-c/Target.h:42:8: note: expanded from macro 'LLVM_TARGET'
   42 |   void LLVMInitialize##TargetName##TargetInfo(void);
      |        ^
:129:1: note: expanded from here
  129 | LLVMInitializeX86TargetInfo
      | ^
In file included from src/main.cpp:80:
src/llvm_backend.cpp:3060:3: error: use of undeclared identifier 'LLVMInitializeRISCVTarget'; did you mean 'LLVMInitializeX86Target'?
 3060 |                 LLVMInitializeRISCVTarget();
      |                 ^~~~~~~~~~~~~~~~~~~~~~~~~
      |                 LLVMInitializeX86Target
/usr/include/llvm/Config/Targets.def:2:1: note: 'LLVMInitializeX86Target' declared here
    2 | LLVM_TARGET(X86)
      | ^
/usr/include/llvm-c/Target.h:46:38: note: expanded from macro 'LLVM_TARGET'
   46 | #define LLVM_TARGET(TargetName) void LLVMInitialize##TargetName##Target(void);
      |                                      ^
:133:1: note: expanded from here
  133 | LLVMInitializeX86Target
      | ^
In file included from src/main.cpp:80:
src/llvm_backend.cpp:3061:3: error: use of undeclared identifier 'LLVMInitializeRISCVTargetMC'; did you mean 'LLVMInitializeX86TargetMC'?
 3061 |                 LLVMInitializeRISCVTargetMC();
      |                 ^~~~~~~~~~~~~~~~~~~~~~~~~~~
      |                 LLVMInitializeX86TargetMC
/usr/include/llvm/Config/Targets.def:2:1: note: 'LLVMInitializeX86TargetMC' declared here
    2 | LLVM_TARGET(X86)
      | ^
/usr/include/llvm-c/Target.h:51:8: note: expanded from macro 'LLVM_TARGET'
   51 |   void LLVMInitialize##TargetName##TargetMC(void);
      |        ^
:137:1: note: expanded from here
  137 | LLVMInitializeX86TargetMC
      | ^
In file included from src/main.cpp:80:
src/llvm_backend.cpp:3062:3: error: use of undeclared identifier 'LLVMInitializeRISCVAsmPrinter'; did you mean 'LLVMInitializeX86AsmPrinter'?
 3062 |                 LLVMInitializeRISCVAsmPrinter();
      |                 ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~
      |                 LLVMInitializeX86AsmPrinter
/usr/include/llvm/Config/AsmPrinters.def:2:1: note: 'LLVMInitializeX86AsmPrinter' declared here
    2 | LLVM_ASM_PRINTER(X86)
      | ^
/usr/include/llvm-c/Target.h:57:8: note: expanded from macro 'LLVM_ASM_PRINTER'
   57 |   void LLVMInitialize##TargetName##AsmPrinter(void);
      |        ^
:141:1: note: expanded from here
  141 | LLVMInitializeX86AsmPrinter
      | ^
In file included from src/main.cpp:80:
src/llvm_backend.cpp:3063:3: error: use of undeclared identifier 'LLVMInitializeRISCVAsmParser'; did you mean 'LLVMInitializeX86AsmParser'?
 3063 |                 LLVMInitializeRISCVAsmParser();
      |                 ^~~~~~~~~~~~~~~~~~~~~~~~~~~~
      |                 LLVMInitializeX86AsmParser
/usr/include/llvm/Config/AsmParsers.def:2:1: note: 'LLVMInitializeX86AsmParser' declared here
    2 | LLVM_ASM_PARSER(X86)
      | ^
/usr/include/llvm-c/Target.h:63:8: note: expanded from macro 'LLVM_ASM_PARSER'
   63 |   void LLVMInitialize##TargetName##AsmParser(void);
      |        ^
:145:1: note: expanded from here
  145 | LLVMInitializeX86AsmParser
      | ^
In file included from src/main.cpp:80:
src/llvm_backend.cpp:3064:3: error: use of undeclared identifier 'LLVMInitializeRISCVDisassembler'; did you mean 'LLVMInitializeX86Disassembler'?
 3064 |                 LLVMInitializeRISCVDisassembler();
      |                 ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
      |                 LLVMInitializeX86Disassembler
/usr/include/llvm/Config/Disassemblers.def:2:1: note: 'LLVMInitializeX86Disassembler' declared here
    2 | LLVM_DISASSEMBLER(X86)
      | ^
/usr/include/llvm-c/Target.h:69:8: note: expanded from macro 'LLVM_DISASSEMBLER'
   69 |   void LLVMInitialize##TargetName##Disassembler(void);
      |        ^
:149:1: note: expanded from here
  149 | LLVMInitializeX86Disassembler
      | ^
In file included from src/main.cpp:80:
src/llvm_backend.cpp:3067:3: error: use of undeclared identifier 'LLVMInitializeARMTargetInfo'
 3067 |                 LLVMInitializeARMTargetInfo();
      |                 ^
fatal error: too many errors emitted, stopping now [-ferror-limit=]
20 errors generated.
*** Error 1 in /home/jackson/builds/Odin-dev-2026-05 (Makefile:19 'release-native')

[heavyrain266]

I will look into this tonight.

[heavyrain266]

Could you give me the output of llvm-config --targets-built? It seems that you're running heavily stripped down LLVM bundled with base system (doesn't support cross-compilation)

[flashcardsmobile-admin]

It gave me: X86 AMDGPU

[heavyrain266]

It gave me: X86 AMDGPU

You're attempting to compile it with stripped down version that doesn't support cross-compilation required to build the compiler. Try pkg_add llvm-21.1.8p4, it "works" for me, except that there is a dynamic linking issue for libLLVM-0.0.so which I'm unable to resolve yet.