Fix MacOS CI builds (#2354)

- Use container: ubuntu:20.04 instead of container: ubuntu:18.04.
- Add `exp` to `lib_compat.h` to solve the GLIBC 2.29 dependency issue.

Fixes https://github.com/clangd/clangd/issues/2244

.github/workflows/autobuild.yaml

@@ -70,7 +70,7 @@ jobs:
       run: >
         echo "RELEASE_DESCRIPTION=Unstable snapshot of clangd on ${{ env.RELEASE_DATE }}." >> commit.env
     - name: Upload result
-      uses: actions/upload-artifact@v3
+      uses: actions/upload-artifact@v4
       with:
         name: env
         path: commit.env
@@ -87,7 +87,7 @@ jobs:
         echo "RELEASE_NAME=${{ github.event.inputs.release_name }}" >> commit.env
         echo "RELEASE_DESCRIPTION=${{ github.event.inputs.description }}" >> commit.env
     - name: Upload result
-      uses: actions/upload-artifact@v3
+      uses: actions/upload-artifact@v4
       with:
         name: env
         path: commit.env
@@ -101,7 +101,7 @@ jobs:
     if: always() && (needs.schedule_environment.result == 'success' || needs.workflow_dispatch_environment.result == 'success')
     steps:
     - name: Fetch environment variables
-      uses: actions/download-artifact@v3
+      uses: actions/download-artifact@v4
       with:
         name:
           env
@@ -130,7 +130,7 @@ jobs:
         echo "TAG_NAME=${{ env.TAG_NAME }}" >> release.env
         echo "RELEASE_ID=${{ steps.create_release.outputs.id }}" >> release.env
     - name: Upload result
-      uses: actions/upload-artifact@v3
+      uses: actions/upload-artifact@v4
       with:
         name: release
         path: release.env
@@ -162,7 +162,7 @@ jobs:
             "-DgRPC_MSVC_STATIC_RUNTIME=ON"
           binary_extension: ".exe"
         - name: mac
-          os: macos-12
+          os: macos-13
           preinstall: brew install ninja zlib p7zip
           cflags: -O3 -gline-tables-only -DNDEBUG
           cmake: >-
@@ -170,13 +170,13 @@ jobs:
             "-DCMAKE_CXX_COMPILER=clang++"
             "-DLLVM_ENABLE_ZLIB=FORCE_ON"
             "-DCMAKE_OSX_ARCHITECTURES=x86_64;arm64"
-            "-DCMAKE_OSX_DEPLOYMENT_TARGET=10.9"
+            "-DCMAKE_OSX_DEPLOYMENT_TARGET=10.13"
           # BoringSSL doesn't support universal binaries when building with ASM.
           grpc_cmake: >-
             "-DOPENSSL_NO_ASM=ON"
         - name: linux
           os: ubuntu-latest
-          container: ubuntu:18.04
+          container: ubuntu:20.04
           preinstall: >-
             apt-get update &&
             apt-get install -y ninja-build libz-dev libc-ares-dev wget clang-9
@@ -245,14 +245,14 @@ jobs:
 
         ninja -C grpc-build install
     - name: Fetch target commit
-      uses: actions/download-artifact@v3
+      uses: actions/download-artifact@v4
       with:
         name:
           env
         path:
           env
     - name: Fetch release info
-      uses: actions/download-artifact@v3
+      uses: actions/download-artifact@v4
       with:
         name:
           release
@@ -363,7 +363,7 @@ jobs:
     if: always() && needs.build.result == 'success'
     steps:
     - name: Fetch release info
-      uses: actions/download-artifact@v3
+      uses: actions/download-artifact@v4
       with:
         name:
           release

.github/workflows/lib_compat.h

@@ -16,5 +16,6 @@ FORCE_SYMBOL_VERSION(expf, GLIBC_2.2.5);
 FORCE_SYMBOL_VERSION(log, GLIBC_2.2.5);
 FORCE_SYMBOL_VERSION(log2, GLIBC_2.2.5);
 FORCE_SYMBOL_VERSION(pow, GLIBC_2.2.5);
+FORCE_SYMBOL_VERSION(exp, GLIBC_2.2.5);
 
 #undef FORCE_SYMBOL_VERSION