bpftool: Update to 7.7.0

This PR is #472 with a couple additional fixes to account for changes
between 7.6.0 and 7.7.0:

* It is no longer necessary to patch `LIBS` to add `-lzstd` since libbpf/bpftool@67f1758
* `bpftool` now links against `openssl`: "This comes at the cost of an
  additional build dependency to OpenSSL's development library." (see https://github.com/libbpf/bpftool/releases/tag/v7.7.0)

Signed-off-by: Hadrien Patte <hadrien.patte@datadoghq.com>

Author: HadrienPatte

images/bpftool/Dockerfile

@@ -10,14 +10,13 @@ FROM ${TESTER_IMAGE} AS tester
 FROM ${COMPILERS_IMAGE} AS builder
 
 # renovate: datasource=github-releases depName=libbpf/bpftool
-ARG BPFTOOL_VERSION="v7.6.0"
+ARG BPFTOOL_VERSION="v7.7.0"
 WORKDIR /bpftool
 RUN git clone --recurse-submodules --branch "${BPFTOOL_VERSION}" https://github.com/libbpf/bpftool.git /bpftool
 
 RUN \
-    # From Ubuntu 24.04 builder image, libzstd must be added at the end of LIBS and LIBS_BOOTSTRAP to compile statically
-    # See https://github.com/libbpf/bpftool/issues/152
-    sed -i "s/\(LIBS = \$(LIBBPF) -lelf -lz\)/\1 -lzstd/; s/\(LIBS_BOOTSTRAP = \$(LIBBPF_BOOTSTRAP) -lelf -lz\)/\1 -lzstd/" /bpftool/src/Makefile \
+    apt update \
+    && apt install -y --no-install-recommends libssl-dev \
     && make -C src EXTRA_CFLAGS=--static BPFTOOL_VERSION="${BPFTOOL_VERSION#v}" -j "$(nproc)" \
     && strip /bpftool/src/bpftool \
     && mkdir -p /out/bin \

images/bpftool/test/spec.yaml

@@ -16,7 +16,7 @@ commandTests:
   args: ["version"]
   expectedOutput:
   # renovate: datasource=github-releases depName=libbpf/bpftool
-  - 'bpftool v7.6.0'
+  - 'bpftool v7.7.0'
 - name: "bpftool is statically linked"
   command: "ldd"
   args: ["/usr/local/bin/bpftool"]