Bundle libbpf and switch to vendored build

Signed-off-by: varun-r-mallya <varunrmallya@gmail.com>

.github/workflows/pip.yml

@@ -32,6 +32,7 @@ jobs:
         sudo apt-get update
         sudo apt-get install -y \
           libbpf-dev \
+          libelf-dev \
           linux-headers-generic \
           build-essential \
           cmake \

.github/workflows/wheels.yml

@@ -44,13 +44,6 @@ jobs:
       with:
         submodules: true
 
-    # Set up QEMU for aarch64 emulation
-    - name: Set up QEMU
-      if: matrix.arch == 'aarch64'
-      uses: docker/setup-qemu-action@v3
-      with:
-        platforms: arm64
-
     - name: Build wheels
       uses: pypa/cibuildwheel@v2.17
       env:
@@ -59,14 +52,13 @@ jobs:
         CIBW_ARCHS_LINUX: ${{ matrix.arch }}
 
         # Python versions to build for
-        CIBW_BUILD: "cp38-* cp39-* cp310-* cp311-* cp312-*"
+        CIBW_BUILD: "cp38-* cp311-*"
         CIBW_SKIP: "*-musllinux*"  # Skip musl builds, focus on glibc
 
-        # Install system dependencies before building
+        # Install minimal system dependencies before building
         CIBW_BEFORE_ALL_LINUX: >
-          yum install -y epel-release &&
-          yum install -y libbpf-devel kernel-headers ||
-          (apt-get update && apt-get install -y libbpf-dev linux-headers-generic)
+          yum install -y make gcc-c++ kernel-headers ||
+          (apt-get update && apt-get install -y build-essential linux-headers-generic)
 
         # Test the built wheels
         CIBW_TEST_COMMAND: "python -c 'import pylibbpf; print(f\"pylibbpf {pylibbpf.__version__} imported successfully\")'"

.gitmodules

@@ -2,3 +2,6 @@
     path = pybind11
     url = https://github.com/pybind/pybind11.git
     branch = master
+[submodule "libbpf"]
+    path = libbpf
+    url = https://github.com/libbpf/libbpf.git

CMakeLists.txt

@@ -4,6 +4,40 @@ project(pylibbpf)
 add_subdirectory(pybind11)
 pybind11_add_module(pylibbpf src/main.cpp)
 
+# Build vendored libbpf
+include(ExternalProject)
+ExternalProject_Add(
+  libbpf
+  PREFIX libbpf
+  SOURCE_DIR ${CMAKE_CURRENT_SOURCE_DIR}/libbpf/src
+  CONFIGURE_COMMAND ""
+  BUILD_COMMAND
+    make BUILD_STATIC_ONLY=1 OBJDIR=${CMAKE_CURRENT_BINARY_DIR}/libbpf/libbpf
+    DESTDIR=${CMAKE_CURRENT_BINARY_DIR}/libbpf INCLUDEDIR= LIBDIR= UAPIDIR=
+    install install_uapi_headers
+  BUILD_IN_SOURCE TRUE
+  INSTALL_COMMAND ""
+  STEP_TARGETS build)
+
+if(${CMAKE_SYSTEM_PROCESSOR} MATCHES "x86_64")
+  set(ARCH "x86")
+elseif(${CMAKE_SYSTEM_PROCESSOR} MATCHES "arm")
+  set(ARCH "arm")
+elseif(${CMAKE_SYSTEM_PROCESSOR} MATCHES "aarch64")
+  set(ARCH "arm64")
+elseif(${CMAKE_SYSTEM_PROCESSOR} MATCHES "ppc64le")
+  set(ARCH "powerpc")
+elseif(${CMAKE_SYSTEM_PROCESSOR} MATCHES "mips")
+  set(ARCH "mips")
+elseif(${CMAKE_SYSTEM_PROCESSOR} MATCHES "riscv64")
+  set(ARCH "riscv")
+elseif(${CMAKE_SYSTEM_PROCESSOR} MATCHES "loongarch64")
+  set(ARCH "loongarch")
+endif()
+
+set(LIBBPF_INCLUDE_DIRS ${CMAKE_CURRENT_BINARY_DIR}/libbpf)
+set(LIBBPF_LIBRARIES ${CMAKE_CURRENT_BINARY_DIR}/libbpf/libbpf.a)
+
 # EXAMPLE_VERSION_INFO is defined by setup.py and passed into the C++ code as a
 # define (VERSION_INFO) here.
 target_compile_definitions(pylibbpf

pyproject.toml

@@ -16,12 +16,11 @@ authors = [
     { name = "varun-r-mallya", email = "varunrmallya@gmail.com" }
 ]
 readme = "README.md"
-license = { text = "Apache-2.0" }
+license = "Apache-2.0"
 requires-python = ">=3.8"
 classifiers = [
     "Development Status :: 3 - Alpha",
     "Intended Audience :: Developers",
-    "License :: OSI Approved :: Apache Software License",
     "Operating System :: POSIX :: Linux",
     "Programming Language :: Python :: 3",
     "Programming Language :: Python :: 3.8",
@@ -64,31 +63,6 @@ filterwarnings = [
 ]
 testpaths = ["tests"]
 
-[tool.cibuildwheel]
-build = ["cp38-*", "cp39-*", "cp310-*", "cp311-*", "cp312-*"]
-skip = ["*-win32", "*-win_amd64", "*-macosx*", "pp*"]
-
-# Build for both x86_64 and aarch64 on Linux
-archs = ["x86_64", "aarch64"]
-
-# Linux-specific settings
-[tool.cibuildwheel.linux]
-before-all = [
-    "yum install -y epel-release || apt-get update",
-    "yum install -y libbpf-devel kernel-headers || apt-get install -y libbpf-dev linux-headers-generic",
-]
-
-# Skip testing on emulated architectures (too slow)
-test-skip = ["*_aarch64", "*_arm64"]
-
-# Test command for supported architectures
-test-command = "pytest {project}/tests"
-test-extras = ["test"]
-
-before-build = "rm -rf {project}/build"
-
-environment = { CMAKE_BUILD_PARALLEL_LEVEL = "2" }
-
 [tool.ruff]
 target-version = "py38"
 line-length = 88

setup.py

@@ -136,7 +136,6 @@ setup(
     classifiers=[
         "Development Status :: 3 - Alpha",
         "Intended Audience :: Developers",
-        "License :: OSI Approved :: Apache Software License",
         "Operating System :: POSIX :: Linux",
         "Programming Language :: Python :: 3",
         "Programming Language :: Python :: 3.8",