Arch Linux User Repository

Build order

llvm-minimal-git
spirv-headers-git
spirv-llvm-translator-minimal-git
libclc-minimal-git
mesa-minimal-git

N.B. these packages are closely tied together, make sure you build all of them in a short period of time (worst case on my system is around 3 hours) .

Build frequency

I aim to build everything (including the lib32 part) atleast once a week.

How often you build this is a personal choice, but once a month is in my opinion the absolute minimum .

In that timeframe mesa will have seen almost 1k commits, llvm/clang gets more.

Why does this package hard depend on llvm-minimal-git ?

• performance

archlinux repo packages are build with -march=x86-64 -mtune=generic which works on lots of machines but makes limited use of modern processor capabilities. For many packages this has little impact, but with llvm my experience is different.

My local builds for llvm / mesa are done with -march=native and this has a noticeable effect on their performance.

How big the benefit of this is depends heavily on the exact hardware you use. Worse, the software setup also impacts this. The only way to find out if it benefits your system/software setup is to try it out yourself.

• easier maintenance and troubleshooting

Since i started my first mesa trunk package late in 2010 I have maintained versions without any llvm, one llvm implementation, split versions, singular versions, versions supporting multiple llvm implementations , switch from libgl hacks libglvnd to allow mesa & nvidia to cooperate etc.

Depending on one llvm variant in a non-splitted singular version results in a simple PKGBUILD that is easy to maintain.

Troubleshooting is also much easier if maintainer uses the same llvm variant as users.

If people feel those reasons are not good enough to hard depend on llvm-minimal-git , maybe I should transfer ownership .

Why does this exist ?

Basically mesa/mesa-git build almost everything they can build.

This package tries to build just enough so everyone can use it, but disables older and/or unused components.

Check https://bbs.archlinux.org/viewtopic.php?id=261629 for a discussion about this package.

EDIT: both are solved now.

There are currently 2 issues with mesa trunk .

https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/30257 (fix is being worked on)

https://gitlab.freedesktop.org/mesa/mesa/-/issues/11546 is a bigger problem as the commit that causes that is reported as causing atleast one other problem.

pkgver -24.2.0_devel.192122.3de62b2f9a6-1 is the last good one .

I suggest you don't rebuild mesa-minimal-git for now or pin your version to commit 3de62b2f9a6 .

patch applied to solve the build failure

Build is currentyl broken, see https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/25265#note_2417849

A change in llvm trunk broke building intel drivers (again) .

see https://gitlab.freedesktop.org/mesa/mesa/-/issues/10947

Confirming successful compilation with -fpermissive, obviously had to use it to compile 32mesa too as it was failing around line 779 without it. Both mesa-minimal-git and lib32-mesa-minimal-git compiled.

PS, just for the lols compiled mesa with LTO. I see why we have it disabled. Massive graphical issues.

Nope, -fpermissive needs to be used in build() of the mesa-minimal-git PKGBUILD.

No changes are needed in the llvm-minimal-git package.

build() {
    CXXFLAGS+=" -fpermissive"
    local cmake_args=(

Right?

I'm still failing randomly between line 500-600 while compiling mesa.

[578/2329] Compiling C object src/vulkan/runtime/libvulkan_lite_runtime.a.p/meson-generated_.._vk_cmd_queue.c.o
ninja: build stopped: subcommand failed.
==> ERROR: A failure occurred in build().

@wustdsh: confirmed, I get the same error.

Looks like it may be caused by https://github.com/llvm/llvm-project/commit/44d037cc258dcf179d2c48c93996bb406ecd0fae but i'll need to bisect llvm-minimal-git to be certain of that (hopefully coming weekend) .

I did find a workaround: add CXXFLAGS+=" -fpermissive" just before the meson setup line in build() .

@d3vilguard: I have tried building with LTO several times in the last 2 years, but got runtime issues every few weeks that vanished completely when building with lto disabled.

built failed with

[405/2802] Compiling C++ object src/compiler/clc/liblibmesaclc.a.p/clc_helpers.cpp.o
FAILED: src/compiler/clc/liblibmesaclc.a.p/clc_helpers.cpp.o 
g++ -Isrc/compiler/clc/liblibmesaclc.a.p -Isrc/compiler/clc -I../mesa/src/compiler/clc -Iinclude -I../mesa/include -Isrc -I../mesa/src -Isrc/compiler/spirv -I../mesa/src/compiler/spirv -Isrc/compiler/nir -I../mesa/src/compiler/nir -Isrc/compiler -I../mesa/src/compiler -I/usr/include/valgrind -fdiagnostics-color=always -DNDEBUG -D_FILE_OFFSET_BITS=64 -Wall -Winvalid-pch -std=c++17 -O3 '-DPACKAGE_VERSION="24.1.0-devel"' '-DPACKAGE_BUGREPORT="https://gitlab.freedesktop.org/mesa/mesa/-/issues"' -DHAVE_OPENGL=1 -DHAVE_OPENGL_ES_1=0 -DHAVE_OPENGL_ES_2=1 -DHAVE_R300 -DHAVE_R600 -DHAVE_RADEONSI -DHAVE_SVGA -DHAVE_SWRAST -DHAVE_VIRGL -DHAVE_IRIS -DHAVE_ZINK -DHAVE_CROCUS -DHAVE_I915 -DVIDEO_CODEC_VC1DEC=1 -DVIDEO_CODEC_H264DEC=1 -DVIDEO_CODEC_H264ENC=1 -DVIDEO_CODEC_H265DEC=1 -DVIDEO_CODEC_H265ENC=1 -DVIDEO_CODEC_AV1DEC=1 -DVIDEO_CODEC_AV1ENC=1 -DVIDEO_CODEC_VP9DEC=1 -DHAVE_X11_PLATFORM -DHAVE_WAYLAND_PLATFORM -DHAVE_SURFACELESS_PLATFORM -DHAVE_DRM_PLATFORM -DHAVE_XCB_PLATFORM -DHAVE_ST_VDPAU -DENABLE_ST_OMX_BELLAGIO=1 -DENABLE_ST_OMX_TIZONIA=0 -DHAVE_VA_SURFACE_ATTRIB_DRM_FORMAT_MODIFIERS -DGLX_INDIRECT_RENDERING -DGLX_DIRECT_RENDERING -DGLX_USE_DRM -DGLAPI_EXPORT_PROTO_ENTRY_POINTS=0 -DALLOW_KCMP -DMESA_DEBUG=0 -DENABLE_SHADER_CACHE -DHAVE___BUILTIN_BSWAP32 -DHAVE___BUILTIN_BSWAP64 -DHAVE___BUILTIN_CLZ -DHAVE___BUILTIN_CLZLL -DHAVE___BUILTIN_CTZ -DHAVE___BUILTIN_EXPECT -DHAVE___BUILTIN_FFS -DHAVE___BUILTIN_FFSLL -DHAVE___BUILTIN_POPCOUNT -DHAVE___BUILTIN_POPCOUNTLL -DHAVE___BUILTIN_UNREACHABLE -DHAVE___BUILTIN_TYPES_COMPATIBLE_P -DHAVE_FUNC_ATTRIBUTE_CONST -DHAVE_FUNC_ATTRIBUTE_FLATTEN -DHAVE_FUNC_ATTRIBUTE_MALLOC -DHAVE_FUNC_ATTRIBUTE_PURE -DHAVE_FUNC_ATTRIBUTE_UNUSED -DHAVE_FUNC_ATTRIBUTE_WARN_UNUSED_RESULT -DHAVE_FUNC_ATTRIBUTE_WEAK -DHAVE_FUNC_ATTRIBUTE_FORMAT -DHAVE_FUNC_ATTRIBUTE_PACKED -DHAVE_FUNC_ATTRIBUTE_RETURNS_NONNULL -DHAVE_FUNC_ATTRIBUTE_ALIAS -DHAVE_FUNC_ATTRIBUTE_NORETURN -DHAVE_FUNC_ATTRIBUTE_VISIBILITY -DHAVE_UINT128 -DHAVE_REALLOCARRAY -DHAVE_FMEMOPEN -DUSE_SSE41 -DHAVE___BUILTIN_IA32_CLFLUSHOPT -DUSE_GCC_ATOMIC_BUILTINS -DUSE_X86_64_ASM -DMAJOR_IN_SYSMACROS -DHAS_SCHED_H -DHAS_SCHED_GETAFFINITY -DHAVE_LINUX_FUTEX_H -DHAVE_ENDIAN_H -DHAVE_DLFCN_H -DHAVE_SYS_SHM_H -DHAVE_CET_H -DHAVE_SYS_INOTIFY_H -DHAVE_STRTOF -DHAVE_MKOSTEMP -DHAVE_MEMFD_CREATE -DHAVE_RANDOM_R -DHAVE_FLOCK -DHAVE_STRTOK_R -DHAVE_GETRANDOM -DHAVE_POSIX_FALLOCATE -DHAVE_SECURE_GETENV -DHAVE_GNU_QSORT_R -DHAVE_STRUCT_TIMESPEC -DHAVE_PROGRAM_INVOCATION_NAME -DHAVE_ISSIGNALING -DHAVE_POSIX_MEMALIGN -DHAVE_DIRENT_D_TYPE -DHAVE_STRTOD_L -DHAVE_DLADDR -DHAVE_DL_ITERATE_PHDR -DSUPPORT_INTEL_INTEGRATED_GPUS -DHAVE_ZLIB -DHAVE_ZSTD -DHAVE_COMPRESSION -DHAVE_PTHREAD -DHAVE_PTHREAD_SETAFFINITY -DHAVE_LIBDRM -DHAVE_LIBUDEV '-DMESA_LLVM_VERSION_STRING="19.0.0"' -DLLVM_IS_SHARED=1 -DLLVM_AVAILABLE=1 -DDRAW_LLVM_AVAILABLE=1 -DUSE_LIBELF -DUSE_LIBGLVND=1 -DHAVE_VALGRIND -DHAVE_LIBUNWIND -DWL_HIDE_DEPRECATED -DHAVE_OPENMP -DHAVE_DRI -DHAVE_DRI2 -DHAVE_DRI3 -DHAVE_DRI3_MODIFIERS -DHAVE_DRISW_KMS -DHAVE_GALLIUM_EXTRA_HUD=1 -DHAVE_LIBSENSORS=1 -mtls-dialect=gnu2 -Werror=return-type -Werror=empty-body -Wmisleading-indentation -Wno-non-virtual-dtor -Wno-missing-field-initializers -Wno-format-truncation -fno-math-errno -fno-trapping-math -flifetime-dse=1 -Wno-unknown-pragmas -Werror=format -Wformat-security -ffunction-sections -fdata-sections -Wno-unused-variable -Wno-unused-but-set-variable -march=native -O3 -pipe -fno-plt -fexceptions -Wp,-D_FORTIFY_SOURCE=2 -Wformat -Werror=format-security -fstack-clash-protection -fcf-protection -Wp,-D_GLIBCXX_ASSERTIONS -fPIC -pthread -D_GNU_SOURCE -D__STDC_CONSTANT_MACROS -D__STDC_FORMAT_MACROS -D__STDC_LIMIT_MACROS '-DLLVM_LIB_DIR="/usr/lib"' '-DDYNAMIC_LIBCLC_PATH="/usr/share/clc/"' -MD -MQ src/compiler/clc/liblibmesaclc.a.p/clc_helpers.cpp.o -MF src/compiler/clc/liblibmesaclc.a.p/clc_helpers.cpp.o.d -o src/compiler/clc/liblibmesaclc.a.p/clc_helpers.cpp.o -c ../mesa/src/compiler/clc/clc_helpers.cpp
../mesa/src/compiler/clc/clc_helpers.cpp: In function ‘int clc_c_to_spir(const clc_compile_args*, const clc_logger*, clc_binary*)’:
../mesa/src/compiler/clc/clc_helpers.cpp:1124:42: error: invalid conversion from ‘void (*)(const llvm::DiagnosticInfo&, void*)’ to ‘llvm::DiagnosticHandler::DiagnosticHandlerTy’ {aka ‘void (*)(const llvm::DiagnosticInfo*, void*)’} [-fpermissive]
 1124 |    llvm_ctx.setDiagnosticHandlerCallBack(llvm_log_handler,
      |                                          ^~~~~~~~~~~~~~~~
      |                                          |
      |                                          void (*)(const llvm::DiagnosticInfo&, void*)
In file included from /usr/include/llvm/IR/Metadata.h:27,
                 from /usr/include/llvm/IR/TrackingMDRef.h:16,
                 from /usr/include/llvm/IR/DebugLoc.h:17,
                 from /usr/include/llvm/IR/DiagnosticInfo.h:22,
                 from ../mesa/src/compiler/clc/clc_helpers.cpp:33:
/usr/include/llvm/IR/LLVMContext.h:171:46: note:   initializing argument 1 of ‘void llvm::LLVMContext::setDiagnosticHandlerCallBack(llvm::DiagnosticHandler::DiagnosticHandlerTy, void*, bool)’
  171 |       DiagnosticHandler::DiagnosticHandlerTy DiagHandler,
      |       ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~^~~~~~~~~~~
../mesa/src/compiler/clc/clc_helpers.cpp: In function ‘int clc_c_to_spirv(const clc_compile_args*, const clc_logger*, clc_binary*)’:
../mesa/src/compiler/clc/clc_helpers.cpp:1150:42: error: invalid conversion from ‘void (*)(const llvm::DiagnosticInfo&, void*)’ to ‘llvm::DiagnosticHandler::DiagnosticHandlerTy’ {aka ‘void (*)(const llvm::DiagnosticInfo*, void*)’} [-fpermissive]
 1150 |    llvm_ctx.setDiagnosticHandlerCallBack(llvm_log_handler,
      |                                          ^~~~~~~~~~~~~~~~
      |                                          |
      |                                          void (*)(const llvm::DiagnosticInfo&, void*)
/usr/include/llvm/IR/LLVMContext.h:171:46: note:   initializing argument 1 of ‘void llvm::LLVMContext::setDiagnosticHandlerCallBack(llvm::DiagnosticHandler::DiagnosticHandlerTy, void*, bool)’
  171 |       DiagnosticHandler::DiagnosticHandlerTy DiagHandler,
      |       ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~^~~~~~~~~~~
../mesa/src/compiler/clc/clc_helpers.cpp: In function ‘int clc_spir_to_spirv(const clc_binary*, const clc_logger*, clc_binary*)’:
../mesa/src/compiler/clc/clc_helpers.cpp:1167:42: error: invalid conversion from ‘void (*)(const llvm::DiagnosticInfo&, void*)’ to ‘llvm::DiagnosticHandler::DiagnosticHandlerTy’ {aka ‘void (*)(const llvm::DiagnosticInfo*, void*)’} [-fpermissive]
 1167 |    llvm_ctx.setDiagnosticHandlerCallBack(llvm_log_handler,
      |                                          ^~~~~~~~~~~~~~~~
      |                                          |
      |                                          void (*)(const llvm::DiagnosticInfo&, void*)
/usr/include/llvm/IR/LLVMContext.h:171:46: note:   initializing argument 1 of ‘void llvm::LLVMContext::setDiagnosticHandlerCallBack(llvm::DiagnosticHandler::DiagnosticHandlerTy, void*, bool)’
  171 |       DiagnosticHandler::DiagnosticHandlerTy DiagHandler,
      |       ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~^~~~~~~~~~~

Maybe my llvm-minimal-git build is outdated, but rebuilding is time-consuming.