chore: fix linux x86 build (#427)

* try out clang

* just bump gcc

* use upgraded gcc

* simplify dockerfile update

* no longer build gems on pr

* correct comment to be actual english

Author: chris-olszewski

.github/docker/rb-sys-protoc.Dockerfile

@@ -17,6 +17,24 @@ RUN case "$TARGETARCH" in \
 
 FROM ${BASE_IMAGE}
 
+ARG GCC_VERSION=""
+
+RUN if [ -n "$GCC_VERSION" ]; then \
+      apt-get update && \
+      apt-get install -y --no-install-recommends gcc-${GCC_VERSION} g++-${GCC_VERSION} && \
+      rm -rf /var/lib/apt/lists/*; \
+    fi
+
+RUN touch /etc/rubybashrc && \
+    if [ -n "$GCC_VERSION" ]; then \
+      echo "export CC=gcc-${GCC_VERSION}" >> /etc/rubybashrc; \
+      echo "export CXX=g++-${GCC_VERSION}" >> /etc/rubybashrc; \
+      echo "export AR=gcc-ar-${GCC_VERSION}" >> /etc/rubybashrc; \
+      echo "export CC_x86_64_unknown_linux_gnu=gcc-${GCC_VERSION}" >> /etc/rubybashrc; \
+      echo "export CXX_x86_64_unknown_linux_gnu=g++-${GCC_VERSION}" >> /etc/rubybashrc; \
+      echo "export CARGO_TARGET_X86_64_UNKNOWN_LINUX_GNU_LINKER=gcc-${GCC_VERSION}" >> /etc/rubybashrc; \
+    fi
+
 COPY --from=protoc /opt/protoc/bin/protoc /usr/local/bin/protoc
 COPY --from=protoc /opt/protoc/include /usr/local/include
 

.github/workflows/build-gems.yml

@@ -17,7 +17,15 @@ jobs:
       matrix:
         # TODO(cretz): Enable x64-mingw-ucrt if we can figure out Windows issue, see
         # https://github.com/temporalio/sdk-ruby/issues/172
-        rubyPlatform: ["aarch64-linux", "aarch64-linux-musl", "x86_64-linux", "x86_64-linux-musl", "arm64-darwin", "x86_64-darwin"]
+        include:
+          - rubyPlatform: aarch64-linux
+          - rubyPlatform: aarch64-linux-musl
+          # aws-lc-rs refuses to use GCC version included in image due to compiler bug
+          - rubyPlatform: x86_64-linux
+            gccVersion: "10"
+          - rubyPlatform: x86_64-linux-musl
+          - rubyPlatform: arm64-darwin
+          - rubyPlatform: x86_64-darwin
     steps:
       - name: Checkout repository
         uses: actions/checkout@de0fac2e4500dabe0009e67214ff5f5447ce83dd # v6
@@ -51,6 +59,7 @@ jobs:
           docker build \
             --platform linux/amd64 \
             --build-arg BASE_IMAGE="rbsys/${{ matrix.rubyPlatform }}:${rb_sys_version}" \
+            --build-arg GCC_VERSION="${{ matrix.gccVersion || '' }}" \
             --build-arg PROTOC_VERSION="${PROTOC_VERSION}" \
             -t "$custom_image" \
             -f ../.github/docker/rb-sys-protoc.Dockerfile \