ci(v3): retire ubuntu focal

ci/cloudbuild/triggers/quickstart-cmake-ci.yaml

@@ -22,7 +22,7 @@ includeBuildLogs: INCLUDE_BUILD_LOGS_WITH_STATUS
 name: prepare-for-v3-0-0-quickstart-cmake-ci
 substitutions:
   _BUILD_NAME: quickstart-cmake
-  _DISTRO: ubuntu-focal
+  _DISTRO: ubuntu-22.04
   _TRIGGER_TYPE: ci
 tags:
 - ci

ci/cloudbuild/triggers/quickstart-cmake-pr.yaml

@@ -23,7 +23,7 @@ includeBuildLogs: INCLUDE_BUILD_LOGS_WITH_STATUS
 name: prepare-for-v3-0-0-quickstart-cmake-pr
 substitutions:
   _BUILD_NAME: quickstart-cmake
-  _DISTRO: ubuntu-focal
+  _DISTRO: ubuntu-22.04
   _TRIGGER_TYPE: pr
 tags:
 - pr

ci/generate-markdown/generate-packaging.sh

@@ -37,7 +37,6 @@ file="doc/packaging.md"
     "demo-opensuse-leap.Dockerfile,openSUSE (Leap)"
     "demo-ubuntu-24.04.Dockerfile,Ubuntu (24.04 LTS - Noble Numbat)"
     "demo-ubuntu-jammy.Dockerfile,Ubuntu (22.04 LTS - Jammy Jellyfish)"
-    "demo-ubuntu-focal.Dockerfile,Ubuntu (20.04 LTS - Focal Fossa)"
     "demo-debian-bookworm.Dockerfile,Debian (12 - Bookworm)"
     "demo-debian-bullseye.Dockerfile,Debian (11 - Bullseye)"
     "demo-rockylinux-9.Dockerfile,Rocky Linux (9)"

doc/packaging.md

@@ -674,173 +674,6 @@ cmake --build cmake-out --target install
 
 </details>
 
-<details>
-<summary>Ubuntu (20.04 LTS - Focal Fossa)</summary>
-<br>
-
-Install the minimal development tools, libcurl, OpenSSL and libc-ares:
-
-```bash
-export DEBIAN_FRONTEND=noninteractive
-sudo apt-get update && \
-sudo apt-get --no-install-recommends install -y apt-transport-https apt-utils \
-        automake build-essential cmake ca-certificates curl git \
-        gcc g++ libc-ares-dev libc-ares2 libcurl4-openssl-dev \
-        libssl-dev m4 make pkg-config tar wget zlib1g-dev
-```
-
-#### Abseil
-
-```bash
-mkdir -p $HOME/Downloads/abseil-cpp && cd $HOME/Downloads/abseil-cpp
-curl -fsSL https://github.com/abseil/abseil-cpp/archive/20250814.1.tar.gz | \
-    tar -xzf - --strip-components=1 && \
-    cmake \
-      -DCMAKE_BUILD_TYPE=Release \
-      -DCMAKE_CXX_STANDARD=17 \
-      -DABSL_BUILD_TESTING=OFF \
-      -DBUILD_SHARED_LIBS=yes \
-      -S . -B cmake-out && \
-    cmake --build cmake-out -- -j ${NCPU:-4} && \
-sudo cmake --build cmake-out --target install -- -j ${NCPU:-4} && \
-sudo ldconfig
-```
-
-#### Protobuf
-
-We need to install a version of Protobuf that is recent enough to support the
-Google Cloud Platform proto files:
-
-```bash
-mkdir -p $HOME/Downloads/protobuf && cd $HOME/Downloads/protobuf
-curl -fsSL https://github.com/protocolbuffers/protobuf/archive/v31.1.tar.gz | \
-    tar -xzf - --strip-components=1 && \
-    cmake \
-        -DCMAKE_BUILD_TYPE=Release \
-        -DCMAKE_CXX_STANDARD=17 \
-        -DBUILD_SHARED_LIBS=yes \
-        -Dprotobuf_BUILD_TESTS=OFF \
-        -Dprotobuf_ABSL_PROVIDER=package \
-        -S . -B cmake-out && \
-    cmake --build cmake-out -- -j ${NCPU:-4} && \
-sudo cmake --build cmake-out --target install -- -j ${NCPU:-4} && \
-sudo ldconfig
-```
-
-#### RE2
-
-The version of RE2 included with this distro hard-codes C++11 in its pkg-config
-file. You can skip this build and use the system's package if you are not
-planning to use pkg-config.
-
-```bash
-mkdir -p $HOME/Downloads/re2 && cd $HOME/Downloads/re2
-curl -fsSL https://github.com/google/re2/archive/2025-07-22.tar.gz | \
-    tar -xzf - --strip-components=1 && \
-    cmake -DCMAKE_BUILD_TYPE=Release \
-        -DBUILD_SHARED_LIBS=ON \
-        -DRE2_BUILD_TESTING=OFF \
-        -S . -B cmake-out && \
-    cmake --build cmake-out -- -j ${NCPU:-4} && \
-sudo cmake --build cmake-out --target install -- -j ${NCPU:-4} && \
-sudo ldconfig
-```
-
-#### gRPC
-
-We also need a version of gRPC that is recent enough to support the Google Cloud
-Platform proto files. We install it using:
-
-```bash
-mkdir -p $HOME/Downloads/grpc && cd $HOME/Downloads/grpc
-curl -fsSL https://github.com/grpc/grpc/archive/v1.74.1.tar.gz | \
-    tar -xzf - --strip-components=1 && \
-    cmake \
-        -DCMAKE_BUILD_TYPE=Release \
-        -DCMAKE_CXX_STANDARD=17 \
-        -DBUILD_SHARED_LIBS=yes \
-        -DgRPC_INSTALL=ON \
-        -DgRPC_BUILD_TESTS=OFF \
-        -DgRPC_ABSL_PROVIDER=package \
-        -DgRPC_CARES_PROVIDER=package \
-        -DgRPC_PROTOBUF_PROVIDER=package \
-        -DgRPC_RE2_PROVIDER=package \
-        -DgRPC_SSL_PROVIDER=package \
-        -DgRPC_ZLIB_PROVIDER=package \
-        -S . -B cmake-out && \
-    cmake --build cmake-out -- -j ${NCPU:-4} && \
-sudo cmake --build cmake-out --target install -- -j ${NCPU:-4} && \
-sudo ldconfig
-```
-
-#### nlohmann_json library
-
-The project depends on the nlohmann_json library. We use CMake to install it as
-this installs the necessary CMake configuration files. Note that this is a
-header-only library, and often installed manually. This leaves your environment
-without support for CMake pkg-config.
-
-```bash
-mkdir -p $HOME/Downloads/json && cd $HOME/Downloads/json
-curl -fsSL https://github.com/nlohmann/json/archive/v3.11.3.tar.gz | \
-    tar -xzf - --strip-components=1 && \
-    cmake \
-      -DCMAKE_BUILD_TYPE=Release \
-      -DBUILD_SHARED_LIBS=yes \
-      -DBUILD_TESTING=OFF \
-      -DJSON_BuildTests=OFF \
-      -S . -B cmake-out && \
-sudo cmake --build cmake-out --target install -- -j ${NCPU:-4} && \
-sudo ldconfig
-```
-
-#### opentelemetry-cpp
-
-The project has an **optional** dependency on the OpenTelemetry library. We
-recommend installing this library because:
-
-- the dependency will become required in the google-cloud-cpp v3.x series.
-- it is needed to produce distributed traces of the library.
-
-```bash
-mkdir -p $HOME/Downloads/opentelemetry-cpp && cd $HOME/Downloads/opentelemetry-cpp
-curl -fsSL https://github.com/open-telemetry/opentelemetry-cpp/archive/v1.24.0.tar.gz | \
-    tar -xzf - --strip-components=1 && \
-    cmake \
-        -DCMAKE_BUILD_TYPE=Release \
-        -DCMAKE_CXX_STANDARD=17 \
-        -DBUILD_SHARED_LIBS=yes \
-        -DWITH_EXAMPLES=OFF \
-        -DWITH_STL=CXX17 \
-        -DBUILD_TESTING=OFF \
-        -DOPENTELEMETRY_INSTALL=ON \
-        -DOPENTELEMETRY_ABI_VERSION_NO=2 \
-        -S . -B cmake-out && \
-sudo cmake --build cmake-out --target install -- -j ${NCPU:-4} && \
-sudo ldconfig
-```
-
-#### Compile and install the main project
-
-We can now compile and install `google-cloud-cpp`:
-
-```bash
-# Pick a location to install the artifacts, e.g., `/usr/local` or `/opt`
-PREFIX="${HOME}/google-cloud-cpp-installed"
-cmake -S . -B cmake-out \
-  -DCMAKE_BUILD_TYPE=Release \
-  -DCMAKE_CXX_STANDARD=17 \
-  -DCMAKE_INSTALL_PREFIX="${PREFIX}" \
-  -DBUILD_TESTING=OFF \
-  -DGOOGLE_CLOUD_CPP_WITH_MOCKS=OFF \
-  -DGOOGLE_CLOUD_CPP_ENABLE_EXAMPLES=OFF \
-  -DGOOGLE_CLOUD_CPP_ENABLE=__ga_libraries__,opentelemetry
-cmake --build cmake-out -- -j "$(nproc)"
-cmake --build cmake-out --target install
-```
-
-</details>
-
 <details>
 <summary>Debian (12 - Bookworm)</summary>
 <br>