build: replace build.py with Conan 2 + CMakePresets build system#8734
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build: replace build.py with Conan 2 + CMakePresets build system#8734
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Retire the build.py / ExternalProject / third_party workflow. Every
external dependency is now resolved through Conan 2 (private NVIDIA
Artifactory remote or Conan Center). Internal Triton repos (common,
core, backend) are consumed as local add_subdirectory checkouts whose
paths are set by conanfile.py or overridden on the cmake command line.
New files:
- conanfile.py: server dependency manifest (grpc, protobuf, re2, boost,
libevent, libevhtp, prometheus-cpp, gtest, nlohmann_json, …)
- requirements.txt: Python wheel deps (tritonfrontend, tritonserver)
- CMakePresets.json: thin include wrapper (points to cmake/presets/)
- cmake/CMakePresets.json: aggregated include list for all platform files
- cmake/presets/CMakePresets.TritonInferenceServer.*.json (6 presets):
Release targets for CPU/CUDA × Ubuntu/manylinux × x86_64/aarch64
- cmake/presets/CMakePresets.TritonClient.*.json (6 presets): client variants
- cmake/presets/CMakePresets.TritonPerfAnalyzer.*.json (2 presets)
- cmake/presets/CMakePresets.TritonVLLMBackend.*.json (1 preset)
- cmake/presets/CMakePresets.TritonTRTLLMBackend.*.json (2 presets)
- conan/profiles/linux-gcc13-{release,debug,-aarch64,-manylinux,…}: build profiles
- conan/recipes/{libevhtp,cnmem,dcgm}/conanfile.py: custom Conan recipes
- build.py → build.py.legacy: retired (kept for reference)
Modified files:
- CMakeLists.txt: replace ExternalProject/FetchContent with
add_subdirectory for sibling repos; add triton_add_backend /
triton_add_plugin macros; add FetchContent compatibility shims so
existing ${repo-core_SOURCE_DIR} references in test targets still resolve
- src/CMakeLists.txt: replace legacy Find-module variable refs with Conan
imported targets (libevent::*, opentelemetry-cpp::*, AWSSDK::*);
add rapidjson to simple target; fix relative ldscript path → absolute
- src/test/CMakeLists.txt: use libevent::core + libevent::extra instead of
${LIBEVENT_LIBRARIES}; drop ${LIBEVENT_INCLUDE_DIRS} (propagated via
target interface)
- src/test/*/CMakeLists.txt (7 files): fix relative --version-script paths
to ${CMAKE_CURRENT_BINARY_DIR}/... for Ninja compatibility
- .gitignore: exclude CMakeUserPresets.json (generated by conan install)
Developer workflow:
conan install server/ \
--profile:host=server/conan/profiles/linux-gcc13-release \
--profile:build=server/conan/profiles/linux-gcc13-release \
-o '&:enable_gpu=False' --build=missing \
--output-folder=server/build/<preset>/conan
cmake --preset triton-inference-server-release-cpu-ubuntu-x86_64
cmake --build --preset triton-inference-server-release-cpu-ubuntu-x86_64
Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
This was referenced Apr 13, 2026
- Set CMAKE_CUDA_RUNTIME_LIBRARY=Shared in server/src and all CUDA preset JSONs so libtritonserver.so links libcudart.so dynamically, matching the production container (libcudart.so.13). - Move all find_package() calls before add_subdirectory(core) in CMakeLists.txt so cnmem::cnmem and DCGM::dcgm imported targets exist when core/src/CMakeLists.txt evaluates if(TARGET cnmem::cnmem). - Update dcgm/conanfile.py to search /usr/include and /usr/lib/x86_64-linux-gnu in addition to /usr/local/dcgm so the apt-installed datacenter-gpu-manager package is found correctly. - Add rapidjson to memory_alloc example link libraries.
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triton-inference-server/backend#123
triton-inference-server/common#154
triton-inference-server/core#490
triton-inference-server/third_party#74
Description
Replaces the legacy
build.pyscript with a Conan 2 package manager and CMakePresets-based build system for the main server repository. Adds Conan recipes for internal dependencies (cnmem, dcgm, libevhtp), build presets for all target platforms/architectures, and migrates CMakeLists.txt to use Conan-provided imported targets.Changes
Affected Files