CI, docs, contrib: remove libelf-dev from dependencies

Since commit 4db3166 ("cilium-map-migrate: remove program and all
of its references") cilium-map-migrate has been replaced by a binary
written in Go and we no longer link binaries against libelf as of commit
c67cf7e ("bpf: remove libelf dependency and unused nobpf.h"). Thus,
drop libelf-dev from dependencies in CI and documentation.

Signed-off-by: Tobias Klauser <tobias@cilium.io>

.github/workflows/lint-build-commits.yaml

@@ -39,10 +39,6 @@ jobs:
           directory: $HOME/.clang
           cached: ${{ steps.cache-llvm.outputs.cache-hit }}
 
-      - name: Install libelf
-        run: |
-          sudo apt-get install libelf-dev
-
       - name: Install ginkgo
         run: |
           go get github.com/onsi/ginkgo/ginkgo@v1.12.1

.travis.yml

@@ -38,7 +38,6 @@ addons:
       - kernel-package
       - gnupg
       - ipset
-      - libelf-dev
       - libncurses5
 
 before_install: ./.travis/prepare.sh

Documentation/contributing/development/dev_setup.rst

@@ -34,8 +34,6 @@ contribute to Cilium:
 +--------------------------------------------------------------+------------------------------+--------------------------------------------------+
 |  llvm                                                        | >= 10.0 (latest recommended) | N/A (OS-specific)                                |
 +--------------------------------------------------------------+------------------------------+--------------------------------------------------+
-|  libelf-devel                                                | latest                       | N/A (OS-specific)                                |
-+--------------------------------------------------------------+------------------------------+--------------------------------------------------+
 | `go <https://golang.org/dl/>`_                               | |GO_RELEASE|                 | N/A (OS-specific)                                |
 +--------------------------------------------------------------+------------------------------+--------------------------------------------------+
 + `ginkgo <https://github.com/onsi/ginkgo>`__                  | >= 1.4.0                     | ``go get -u github.com/onsi/ginkgo/ginkgo``      |

contrib/ansible/roles/common/tasks/common_delete.yml

@@ -8,7 +8,6 @@
     - bc
     - pkg-config
     - libssl-dev
-    - libelf-dev
     - bison
     - flex
     - libncurses5-dev

contrib/ansible/roles/common/tasks/common_install.yml

@@ -8,7 +8,6 @@
     - bc
     - pkg-config
     - libssl-dev
-    - libelf-dev
     - bison
     - flex
     - libncurses5-dev

contrib/packaging/rpm/Dockerfile

@@ -8,7 +8,7 @@ RUN curl -sSL -o /etc/yum.repos.d/vbatts-bazel-fedora-28.repo \
 RUN dnf -y update && \
 	dnf -y install fedora-packager fedora-review golang gettext \
 		git glibc-devel.x86_64 cmake bazel libtool wget \
-		clang make gcc-c++ elfutils-libelf-devel libstdc++-static && \
+		clang make gcc-c++ libstdc++-static && \
     mkdir -p /opt/cilium/
 
 WORKDIR /opt/cilium

contrib/packaging/rpm/cilium.spec.envsubst

@@ -64,7 +64,6 @@ BuildRequires: bazel
 BuildRequires: ninja-build
 BuildRequires: systemd
 BuildRequires: gcc-c++
-BuildRequires: elfutils-libelf-devel
 BuildRequires: libstdc++-static
 BuildRequires: libtool
 BuildRequires: wget

tools/dev-doctor/rootcmd.go

@@ -84,7 +84,6 @@ func rootCmdRun(cmd *cobra.Command, args []string) {
 			versionRegexp: regexp.MustCompile(`github\.com/docker/buildx v(\d+\.\d+\.\d+)`),
 			hint:          "see https://docs.docker.com/engine/install/",
 		},
-		// FIXME add libelf-devel check?
 		&binaryCheck{
 			name:          "ginkgo",
 			ifNotFound:    checkWarning,