Add VC4CL OpenCL packages for Raspberry Pi VideoCore IV#78
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Foadsf wants to merge 4 commits intolure-sh:masterfrom
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Add VC4CL OpenCL packages for Raspberry Pi VideoCore IV#78Foadsf wants to merge 4 commits intolure-sh:masterfrom
Foadsf wants to merge 4 commits intolure-sh:masterfrom
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Adds four new LURE packages: - vc4c-stdlib-git: Standard library headers for VC4C compiler - vc4c-git: OpenCL to VideoCore IV compiler - vc4cl-git: OpenCL 1.2 runtime for VideoCore IV GPU - clinfo-git: OpenCL platform/device info tool Key notes: - Only works on Raspberry Pi 1-3 (VideoCore IV) - Does NOT work on Pi 4/5 (different GPU) - 64-bit ARM (aarch64) has known SIGBUS issues - Requires 32-bit kernel or 32-bit Raspberry Pi OS - Use make -j1 on Pi 3B to avoid OOM during compilation - Debian version format requires versions starting with digit See individual README.md files for detailed lessons learned.
vc4c-git: - Add VC4CL_STDLIB_DIR to point to installed stdlib headers - Disable VC4CL_STDLIB_PRECOMPILE to avoid permission errors during build vc4cl-git: - Add ocl-icd-dev to build dependencies for ICD support - Enable BUILD_ICD for proper OpenCL ICD loader integration - Disable INCLUDE_COMPILER to avoid runtime crash in libVC4CC Tested on Raspberry Pi 3B+ with 32-bit Bookworm. clinfo now works.
vc4cl-git: - Enable BUILD_ICD for OpenCL ICD loader integration - Enable INCLUDE_COMPILER for online kernel compilation - Add ocl-icd-dev build dependency Tested on Raspberry Pi 3B+ (32-bit Bookworm): - clinfo detects VideoCore IV GPU - Compiler Available: Yes - Successfully compiled and executed vector_add kernel on GPU
- clinfo-git: OpenCL platform/device info tool - vc4c-stdlib-git: VC4C standard library headers - vc4c-git: VC4C OpenCL compiler (uses LLVM 14 for C++14 compatibility) - vc4cl-git: VC4CL OpenCL runtime for VideoCore IV GPU All packages build successfully on x86_64 (cross-platform). Designed for Raspberry Pi 1-3 (not Pi 4/5). Key fixes: - Use LLVM 14 instead of LLVM 18 to avoid C++17/C++14 conflicts - Use GCC compiler with LLVM 14 libraries - Single-threaded builds to avoid OOM on Pi 3B - Debian-compliant version format (0.0.0.r%s.%s)
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Adds four new LURE packages:
Key notes:
See individual README.md files for detailed lessons learned.