ci: setup bpftrace via separate script

Optionally build bpftrace from source.

Signed-off-by: Ihor Solodrai <ihor.solodrai@linux.dev>

Author: theihor

.github/scripts/install-bpftrace.sh

@@ -0,0 +1,34 @@
+#!/bin/bash
+
+set -x -euo pipefail
+
+BPFTRACE_VERSION=${BPFTRACE_VERSION:-0.22.1}
+BUILD_BPFTRACE=${BUILD_BPFTRACE:-}
+
+BIN_DIR=/usr/local/bin
+sudo mkdir -p $BIN_DIR
+
+if [[ -n "$BUILD_BPFTRACE" ]]; then
+    # see https://github.com/bpftrace/bpftrace/blob/master/docker/Dockerfile.ubuntu
+    sudo apt-get install -y \
+         asciidoctor binutils-dev bison build-essential clang cmake flex git libbpf-dev \
+         libbpfcc-dev libcereal-dev libelf-dev libiberty-dev libpcap-dev llvm-dev liblldb-dev \
+         libclang-dev systemtap-sdt-dev zlib1g-dev
+    git clone --depth 1 -b v${BPFTRACE_VERSION} https://github.com/bpftrace/bpftrace
+    cd bpftrace/src
+    cmake -B build -DBUILD_TESTING=OFF -DCMAKE_BUILD_TYPE=Release -DLLVM_DIR=$(llvm-config --prefix)/lib/cmake/llvm
+    make -C build -j$(nproc)
+    cd -
+    sudo mv bpftrace/src/build/bpftrace $BIN_DIR/bpftrace
+else # download AppImage
+    sudo curl -L -o $BIN_DIR/bpftrace https://github.com/bpftrace/bpftrace/releases/download/v${BPFTRACE_VERSION}/bpftrace
+fi
+
+sudo chmod +x $BIN_DIR/bpftrace
+
+# mount tracefs to avoid warnings from bpftrace
+grep -q tracefs /proc/mounts || mount -t tracefs tracefs /sys/kernel/tracing
+
+# sanity check
+bpftrace --version
+

.github/scripts/setup.sh

@@ -3,6 +3,7 @@
 set -euo pipefail
 
 # Assume sudo in this script
+GITHUB_WORKSPACE=${GITHUB_WORKSPACE:-$(pwd)}
 BPFTRACE_VERSION=${BPFTRACE_VERSION:-0.22.1}
 GCC_VERSION=${GCC_VERSION:-13}
 
@@ -14,13 +15,5 @@ apt-get install -y curl file gawk libfuse2t64 make sudo
 # Install CC
 apt-get install -y gcc-${GCC_VERSION} g++-${GCC_VERSION}
 
-# Download bpftrace release
-BIN_DIR=/usr/local/bin
-mkdir -p $BIN_DIR
-curl -L -o bpftrace https://github.com/bpftrace/bpftrace/releases/download/v${BPFTRACE_VERSION}/bpftrace
-chmod +x bpftrace
-mv bpftrace $BIN_DIR
-bpftrace --version
+${GITHUB_WORKSPACE}/.github/scripts/install-bpftrace.sh
 
-# mount tracefs to avoid warnings from bpftrace
-grep -q tracefs /proc/mounts || mount -t tracefs tracefs /sys/kernel/tracing