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Merge pull request #1 from DwifteJB/msvc-winsysroot-fix

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fix: auto-detect winsysroot from msbuild location & replace /winsysro…
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haløgen 2026-03-04 17:14:19 -05:00 committed by GitHub
parent b87774ab33 e3e06bcc80
commit da6c15e6a9
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GPG key ID: B5690EEEBB952194
2 changed files with 48 additions and 6 deletions
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14
Minecraft.Client/IobShim.cpp
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@ -1,5 +1,7 @@
// Original file is iob_shim.asm
// Rewritten in C because the build system breaks on linux-windows crosscomp with this
// rm: __declspec(naked) is seemingly(?) not working on x86_64 (atleast via wine); use __attribute__((naked)) instead.
#if 0
.code
EXTRN __acrt_iob_func:PROC
@ -14,7 +16,13 @@ END
#include <cstdio>
extern "C" FILE* __cdecl __iob_func ( void ) {
static FILE iob [ ] = { *stdin, *stdout, *stderr };
return iob;
extern "C" FILE* __cdecl __acrt_iob_func(unsigned index);
extern "C" __attribute__((naked)) FILE* __cdecl __iob_func(void) {
__asm__(
".intel_syntax noprefix\n\t"
"mov ecx, 0\n\t"
"jmp __acrt_iob_func\n\t"
".att_syntax prefix"
);
}

40
cmake/LinuxCrosscompile.cmake
View file

@ -7,10 +7,44 @@ set(CMAKE_LINKER lld-link)
set(CMAKE_C_COMPILER_FRONTEND_VARIANT MSVC)
set(CMAKE_CXX_COMPILER_FRONTEND_VARIANT MSVC)
add_compile_options(/winsysroot /opt/msvc --target=x86_64-pc-windows-msvc -fms-compatibility -fms-extensions -fdelayed-template-parsing)
add_link_options(/winsysroot:/opt/msvc)
# rm: locate winsysroot via the msbuild.exe path
find_program(_msbuild_exe msbuild)
if(_msbuild_exe)
get_filename_component(_msbuild_bin ${_msbuild_exe} DIRECTORY) # .../bin/x64
get_filename_component(_candidate "${_msbuild_bin}/.." ABSOLUTE) # .../bin
if(NOT IS_DIRECTORY "${_candidate}/vc")
get_filename_component(_candidate "${_candidate}/.." ABSOLUTE) # .../<root>
endif()
set(MSVC_WINSYSROOT ${_candidate})
else()
# rm: assume /opt/msvc as a fallback (which is usually the default path)
set(MSVC_WINSYSROOT /opt/msvc)
endif()
#set(CMAKE_RC_COMPILE_OBJECT "<CMAKE_RC_COMPILER> /I /opt/msvc/kits/10/include/10.0.26100.0/shared <DEFINES> /fo<OBJECT> <SOURCE>")
# rm: detect msvc version
file(GLOB _msvc_versions LIST_DIRECTORIES true ${MSVC_WINSYSROOT}/VC/Tools/MSVC/*)
list(GET _msvc_versions 0 _msvc_dir)
# rm: detect window sdk version
file(GLOB _winsdk_versions LIST_DIRECTORIES true ${MSVC_WINSYSROOT}/kits/10/Include/*)
list(GET _winsdk_versions 0 _winsdk_dir)
get_filename_component(_winsdk_ver ${_winsdk_dir} NAME)
add_compile_options(
--target=x86_64-pc-windows-msvc
-fms-compatibility
-fms-extensions
-fdelayed-template-parsing
# rm: paths to msvc and windows sdk headers
"-imsvc${_msvc_dir}/include"
"-imsvc${_msvc_dir}/atlmfc/include"
"-imsvc${MSVC_WINSYSROOT}/kits/10/Include/${_winsdk_ver}/ucrt"
"-imsvc${MSVC_WINSYSROOT}/kits/10/Include/${_winsdk_ver}/um"
"-imsvc${MSVC_WINSYSROOT}/kits/10/Include/${_winsdk_ver}/shared"
"-imsvc${MSVC_WINSYSROOT}/kits/10/Include/${_winsdk_ver}/winrt"
)
add_link_options(/winsysroot:${MSVC_WINSYSROOT})
set(CMAKE_FIND_ROOT_PATH_MODE_PROGRAM NEVER)
set(CMAKE_FIND_ROOT_PATH_MODE_LIBRARY ONLY)