ci: enable v21 ABI checks

v21 ABI will be maintained until v21.11.

Let's use the latest released libabigail 1.8.

In GitHub Actions, libabigail binaries and the ABI reference are stored
in two shared caches as all branches can use the same.

While at it, we can reproduce changes from the commit 0b8086ce3f
("devtools: remove useless files from ABI reference").
This will save some space in the CI caches.

Signed-off-by: David Marchand <david.marchand@redhat.com>
Tested-by: Ferruh Yigit <ferruh.yigit@intel.com>
Acked-by: Thomas Monjalon <thomas@monjalon.net>
Acked-by: Aaron Conole <aconole@redhat.com>

.ci/linux-build.sh

@@ -86,10 +86,13 @@ if [ "$ABI_CHECKS" = "true" ]; then
     if [ ! -d reference ]; then
         refsrcdir=$(readlink -f $(pwd)/../dpdk-$REF_GIT_TAG)
         git clone --single-branch -b $REF_GIT_TAG $REF_GIT_REPO $refsrcdir
-        meson --werror $OPTS $refsrcdir $refsrcdir/build
+        meson $OPTS -Dexamples= $refsrcdir $refsrcdir/build
         ninja -C $refsrcdir/build
         DESTDIR=$(pwd)/reference ninja -C $refsrcdir/build install
         devtools/gen-abi.sh reference
+        find reference/usr/local -name '*.a' -delete
+        rm -rf reference/usr/local/bin
+        rm -rf reference/usr/local/share
         echo $REF_GIT_TAG > reference/VERSION
     fi
 

.github/workflows/build.yml

@@ -15,10 +15,13 @@ jobs:
     runs-on: ${{ matrix.config.os }}
     env:
       AARCH64: ${{ matrix.config.cross == 'aarch64' }}
+      ABI_CHECKS: ${{ contains(matrix.config.checks, 'abi') }}
       BUILD_32BIT: ${{ matrix.config.cross == 'i386' }}
       BUILD_DOCS: ${{ contains(matrix.config.checks, 'doc') }}
       CC: ccache ${{ matrix.config.compiler }}
       DEF_LIB: ${{ matrix.config.library }}
+      LIBABIGAIL_VERSION: libabigail-1.8
+      REF_GIT_TAG: v20.11
       RUN_TESTS: ${{ contains(matrix.config.checks, 'tests') }}
 
     strategy:
@@ -31,7 +34,7 @@ jobs:
           - os: ubuntu-18.04
             compiler: gcc
             library: shared
-            checks: doc+tests
+            checks: abi+doc+tests
           - os: ubuntu-18.04
             compiler: clang
             library: static
@@ -60,6 +63,10 @@ jobs:
       run: |
         echo -n '::set-output name=ccache::'
         echo 'ccache-${{ matrix.config.os }}-${{ matrix.config.compiler }}-${{ matrix.config.cross }}-'$(date -u +%Y-w%W)
+        echo -n '::set-output name=libabigail::'
+        echo 'libabigail-${{ matrix.config.os }}'
+        echo -n '::set-output name=abi::'
+        echo 'abi-${{ matrix.config.os }}-${{ matrix.config.compiler }}-${{ matrix.config.cross }}-${{ env.LIBABIGAIL_VERSION }}-${{ env.REF_GIT_TAG }}'
     - name: Retrieve ccache cache
       uses: actions/cache@v2
       with:
@@ -67,10 +74,27 @@ jobs:
         key: ${{ steps.get_ref_keys.outputs.ccache }}-${{ github.ref }}
         restore-keys: |
           ${{ steps.get_ref_keys.outputs.ccache }}-refs/heads/main
+    - name: Retrieve libabigail cache
+      id: libabigail-cache
+      uses: actions/cache@v2
+      if: env.ABI_CHECKS == 'true'
+      with:
+        path: libabigail
+        key: ${{ steps.get_ref_keys.outputs.libabigail }}
+    - name: Retrieve ABI reference cache
+      uses: actions/cache@v2
+      if: env.ABI_CHECKS == 'true'
+      with:
+        path: reference
+        key: ${{ steps.get_ref_keys.outputs.abi }}
     - name: Install packages
       run: sudo apt install -y ccache libnuma-dev python3-setuptools
         python3-wheel python3-pip ninja-build libbsd-dev libpcap-dev
         libibverbs-dev libcrypto++-dev libfdt-dev libjansson-dev
+    - name: Install libabigail build dependencies if no cache is available
+      if: env.ABI_CHECKS == 'true' && steps.libabigail-cache.outputs.cache-hit != 'true'
+      run: sudo apt install -y autoconf automake libtool pkg-config libxml2-dev
+          libdw-dev
     - name: Install i386 cross compiling packages
       if: env.BUILD_32BIT == 'true'
       run: sudo apt install -y gcc-multilib

.travis.yml

@@ -2,6 +2,9 @@
 language: c
 cache:
   ccache: true
+  directories:
+    - libabigail
+    - reference
 
 dist: bionic
 
@@ -18,6 +21,9 @@ _aarch64_packages: &aarch64_packages
   - *required_packages
   - [gcc-aarch64-linux-gnu, libc6-dev-arm64-cross, pkg-config-aarch64-linux-gnu]
 
+_libabigail_build_packages: &libabigail_build_packages
+  - [autoconf, automake, libtool, pkg-config, libxml2-dev, libdw-dev]
+
 _build_32b_packages: &build_32b_packages
   - *required_packages
   - [gcc-multilib]
@@ -28,6 +34,11 @@ _doc_packages: &doc_packages
 before_install: ./.ci/${TRAVIS_OS_NAME}-setup.sh
 script: ./.ci/${TRAVIS_OS_NAME}-build.sh
 
+env:
+  global:
+    - LIBABIGAIL_VERSION=libabigail-1.8
+    - REF_GIT_TAG=v20.11
+
 jobs:
   include:
   # x86_64 gcc jobs
@@ -45,6 +56,14 @@ jobs:
         packages:
           - *required_packages
           - *doc_packages
+  - env: DEF_LIB="shared" ABI_CHECKS=true
+    arch: amd64
+    compiler: gcc
+    addons:
+      apt:
+        packages:
+          - *required_packages
+          - *libabigail_build_packages
   # x86_64 clang jobs
   - env: DEF_LIB="static"
     arch: amd64
@@ -104,6 +123,14 @@ jobs:
         packages:
           - *required_packages
           - *doc_packages
+  - env: DEF_LIB="shared" ABI_CHECKS=true
+    arch: arm64
+    compiler: gcc
+    addons:
+      apt:
+        packages:
+          - *required_packages
+          - *libabigail_build_packages
   # aarch64 clang jobs
   - env: DEF_LIB="static"
     arch: arm64