Fix variable name for version info in CMake config

Rename EXAMPLE_VERSION_INFO to PYLIBBPF_VERSION_INFO and disable Linux
system dependencies installation

Author: varun-r-mallya

.github/workflows/wheels.yml

@@ -55,10 +55,10 @@ jobs:
         CIBW_BUILD: "cp38-* cp311-*"
         CIBW_SKIP: "*-musllinux*"  # Skip musl builds, focus on glibc
 
-        # Install minimal system dependencies before building
-        CIBW_BEFORE_ALL_LINUX: >
-          yum install -y make gcc-c++ kernel-headers ||
-          (apt-get update && apt-get install -y build-essential linux-headers-generic)
+        # # Install minimal system dependencies before building
+        # CIBW_BEFORE_ALL_LINUX: >
+        #   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\")'"

CMakeLists.txt

@@ -41,4 +41,4 @@ set(LIBBPF_LIBRARIES ${CMAKE_CURRENT_BINARY_DIR}/libbpf/libbpf.a)
 # EXAMPLE_VERSION_INFO is defined by setup.py and passed into the C++ code as a
 # define (VERSION_INFO) here.
 target_compile_definitions(pylibbpf
-                           PRIVATE VERSION_INFO=${EXAMPLE_VERSION_INFO})
+                           PRIVATE VERSION_INFO=${PYLIBBPF_VERSION_INFO})