github: Stop manually installing ninja

Since actions/runner-images#11706,
actions/runner-images#11707 and
actions/runner-images#11737, ninja is
preinstalled in all the runner images. (See
actions/runner-images#11391 for the
overall issue where this was finally agreed to be installed.)

Author: mstorsjo

.github/workflows/build.yml

@@ -79,7 +79,6 @@ jobs:
           SOURCE_DATE_EPOCH: ${{needs.prepare.outputs.COMMIT_DATE_UNIX}}
           BUILD_DATE: ${{needs.prepare.outputs.BUILD_DATE}}
         run: |
-          sudo apt-get update && sudo apt-get install ninja-build
           # Skip dynamic library dependencies that might make it harder to
           # run the binaries on other distros (and that have little use within
           # llvm-mingw).
@@ -113,7 +112,7 @@ jobs:
           MINGW_W64_VERSION: ${{needs.prepare.outputs.MINGW_W64_VERSION}}
           SOURCE_DATE_EPOCH: ${{needs.prepare.outputs.COMMIT_DATE_UNIX}}
         run: |
-          sudo apt-get update && sudo apt-get install ninja-build g++-aarch64-linux-gnu
+          sudo apt-get update && sudo apt-get install g++-aarch64-linux-gnu
           ./build-all.sh $(pwd)/install/llvm-mingw --no-runtimes --host=aarch64-linux-gnu
           .github/workflows/store-version.sh install/llvm-mingw/versions.txt
       - uses: actions/download-artifact@v4
@@ -169,7 +168,6 @@ jobs:
           SOURCE_DATE_EPOCH: ${{needs.prepare.outputs.COMMIT_DATE_UNIX}}
           BUILD_DATE: ${{needs.prepare.outputs.BUILD_DATE}}
         run: |
-          sudo apt-get update && sudo apt-get install ninja-build
           # Skip dynamic library dependencies that might make it harder to
           # run the binaries on other distros (and that have little use within
           # llvm-mingw).
@@ -200,7 +198,6 @@ jobs:
           SOURCE_DATE_EPOCH: ${{needs.prepare.outputs.COMMIT_DATE_UNIX}}
           BUILD_DATE: ${{needs.prepare.outputs.BUILD_DATE}}
         run: |
-          brew install ninja
           # Disable zstd and python. Both are available on the runners, but
           # installed with homebrew, and only available in the native (x86_64)
           # form. Therefore, autodetection will pick them up, but linking
@@ -313,7 +310,7 @@ jobs:
           SOURCE_DATE_EPOCH: ${{needs.prepare.outputs.COMMIT_DATE_UNIX}}
           BUILD_DATE: ${{needs.prepare.outputs.BUILD_DATE}}
         run: |
-          sudo apt-get update && sudo apt-get install libltdl-dev swig autoconf-archive ninja-build
+          sudo apt-get update && sudo apt-get install libltdl-dev swig autoconf-archive
           ./build-cross-tools.sh /opt/llvm-mingw $(pwd)/install/llvm-mingw ${{matrix.arch}} --with-python
           .github/workflows/store-version.sh install/llvm-mingw/versions.txt
           cd install
@@ -389,9 +386,6 @@ jobs:
           - { arch: aarch64, target_arch: aarch64 }
     runs-on: ${{startsWith(matrix.arch, 'a') && 'windows-11-arm' || 'windows-latest'}}
     steps:
-      - name: Install dependencies
-        run: |
-          choco install ninja
       - uses: actions/download-artifact@v4
         with:
           name: windows-ucrt-${{matrix.arch}}-toolchain
@@ -452,9 +446,6 @@ jobs:
           - { arch: aarch64 }
     runs-on: ${{startsWith(matrix.arch, 'a') && 'windows-11-arm' || 'windows-latest'}}
     steps:
-      - name: Install dependencies
-        run: |
-          choco install ninja
       - uses: actions/download-artifact@v4
         with:
           name: windows-ucrt-${{matrix.arch}}-toolchain
@@ -519,9 +510,6 @@ jobs:
           - aarch64
     runs-on: ${{startsWith(matrix.arch, 'a') && 'windows-11-arm' || 'windows-latest'}}
     steps:
-      - name: Install dependencies
-        run: |
-          choco install ninja
       - uses: actions/download-artifact@v4
         with:
           name: windows-ucrt-${{matrix.arch}}-toolchain

.github/workflows/msvcrt.yml

@@ -75,7 +75,6 @@ jobs:
           SOURCE_DATE_EPOCH: ${{needs.prepare.outputs.COMMIT_DATE_UNIX}}
           BUILD_DATE: ${{needs.prepare.outputs.BUILD_DATE}}
         run: |
-          sudo apt-get update && sudo apt-get install ninja-build
           ./build-all.sh $(pwd)/install/llvm-mingw --no-tools --wipe-runtimes --with-default-msvcrt=msvcrt
           .github/workflows/store-version.sh install/llvm-mingw/versions.txt
           cd install
@@ -119,7 +118,7 @@ jobs:
           PYTHON_VERSION_MINGW: ${{needs.prepare.outputs.PYTHON_VERSION_MINGW}}
           TAG: ${{needs.prepare.outputs.TAG}}
         run: |
-          sudo apt-get update && sudo apt-get install libltdl-dev swig autoconf-archive ninja-build
+          sudo apt-get update && sudo apt-get install libltdl-dev swig autoconf-archive
           ./build-cross-tools.sh /opt/llvm-mingw $(pwd)/install/llvm-mingw ${{matrix.arch}} --with-python
           .github/workflows/store-version.sh install/llvm-mingw/versions.txt
           cd install

.github/workflows/test-libcxx.yml

@@ -51,9 +51,6 @@ jobs:
           - { arch: aarch64, target_arch: aarch64 }
     runs-on: ${{startsWith(matrix.arch, 'a') && 'windows-11-arm' || 'windows-latest'}}
     steps:
-      - name: Install dependencies
-        run: |
-          choco install ninja
       - name: Download toolchain
         uses: dawidd6/action-download-artifact@v6
         with:

.github/workflows/test-llvm.yml

@@ -49,9 +49,6 @@ jobs:
           - aarch64
     runs-on: ${{startsWith(matrix.arch, 'a') && 'windows-11-arm' || 'windows-latest'}}
     steps:
-      - name: Install dependencies
-        run: |
-          choco install ninja
       - name: Download toolchain
         uses: dawidd6/action-download-artifact@v6
         with: