chore: enable python-crc32c kokoro presubmits

Author: ohmayr

.kokoro/presubmit/linux/presubmit-linux.cfg

@@ -6,6 +6,4 @@ action {
     regex: "**/*sponge_log.xml"
   }
 }
-
-# Bypass the trampoline entirely and run our dummy script natively
-build_file: "google-cloud-python/packages/google-crc32c/scripts/bypass.sh"
+build_file: "google-cloud-python/packages/google-crc32c/scripts/manylinux/build.sh"

.kokoro/presubmit/osx/presubmit-osx-slcn.cfg

@@ -7,5 +7,4 @@ action {
   }
 }
 
-# Reuse the exact same bash script we used for Linux!
-build_file: "google-cloud-python/packages/google-crc32c/scripts/bypass.sh"
+build_file: "google-cloud-python/packages/google-crc32c/scripts/osx/build.sh"

.kokoro/presubmit/osx/presubmit-osx.cfg

@@ -7,5 +7,4 @@ action {
   }
 }
 
-# Reuse the exact same bash script we used for Linux!
-build_file: "google-cloud-python/packages/google-crc32c/scripts/bypass.sh"
+build_file: "google-cloud-python/packages/google-crc32c/scripts/osx/build.sh"

.kokoro/presubmit/windows/presubmit-windows-google-crc32c.cfg

@@ -7,5 +7,4 @@ action {
   }
 }
 
-# Reuse the exact same bash script we used for Linux!
-build_file: "google-cloud-python/packages/google-crc32c/scripts/bypass.bat"
+build_file: "google-cloud-python/packages/google-crc32c/scripts/windows/build.bat"

packages/google-crc32c/scripts/bypass.bat

@@ -28,8 +28,7 @@ sudo apt-get install -y python3.12
 
 cd $REPO_ROOT
 # Add directory as safe to avoid "detected dubious ownership" fatal issue1
-git config --global --add safe.directory $REPO_ROOT
-git config --global --add safe.directory $REPO_ROOT/google_crc32c
+git config --global --add safe.directory '*'
 git submodule update --init --recursive
 
 

packages/google-crc32c/scripts/bypass.sh

@@ -32,8 +32,7 @@ export CRC32C_INSTALL_PREFIX="${REPO_ROOT}/usr"
 
 cd ${REPO_ROOT}
 # Add directory as safe to avoid "detected dubious ownership" fatal issue
-git config --global --add safe.directory $REPO_ROOT
-git config --global --add safe.directory $REPO_ROOT/google_crc32c
+git config --global --add safe.directory '*'
 git submodule update --init --recursive
 
 ${OSX_DIR}/build_c_lib.sh

packages/google-crc32c/scripts/manylinux/build.sh

@@ -52,12 +52,8 @@ install_python_pyenv() {
 install_python_pyenv ${PY_BIN}
 
 
-# ``readlink -f`` is not our friend on OS X. This relies on **some**
-# ``python`` being installed.
-SCRIPT_FI=$(python3 -c "import os; print(os.path.realpath('${0}'))")
-OSX_DIR=$(dirname ${SCRIPT_FI})
-SCRIPTS_DIR=$(dirname ${OSX_DIR})
-export REPO_ROOT=$(dirname ${SCRIPTS_DIR})
+# Rely on the REPO_ROOT already provided by the parent script
+OSX_DIR="${REPO_ROOT}/scripts/osx"
 
 # Create a virtualenv where we can install Python build dependencies.
 VENV=${REPO_ROOT}/venv${PY_BIN}

packages/google-crc32c/scripts/osx/build.sh

@@ -40,12 +40,8 @@ FOR %%P IN (3.9, 3.10, 3.11, 3.12, 3.13.1, 3.14.0) DO (
     py -!python_version_trimmed!-64 -m pip install cmake
 
     @rem Add directory as safe to avoid "detected dubious ownership" fatal issue
-    git config --global --add safe.directory %cd%
-    git config --global --add safe.directory C:/tmpfs/src/github/python-crc32c
+    git config --global --add safe.directory *
     git submodule update --init --recursive
-
-    git config --global --add safe.directory %cd%\google_crc32c
-    git config --global --add safe.directory C:/tmpfs/src/github/python-crc32c/google_crc32c
     pushd google_crc32c
     @rem reset hard to cleanup any changes done by a previous build.
     git reset --hard
@@ -59,7 +55,7 @@ FOR %%P IN (3.9, 3.10, 3.11, 3.12, 3.13.1, 3.14.0) DO (
 
     echo "Running cmake with Generator:  %CMAKE_GENERATOR%, Platform: x64, Install Prefix: %CRC32C_INSTALL_PREFIX%"
 
-    py -!python_version_trimmed!-64 -m cmake -G "Visual Studio 17 2022" -A x64 -DCMAKE_POLICY_VERSION_MINIMUM=3.12 -DCRC32C_BUILD_BENCHMARKS=no -DCRC32C_BUILD_TESTS=no -DBUILD_SHARED_LIBS=yes -DCMAKE_WINDOWS_EXPORT_ALL_SYMBOLS=yes -DCRC32C_USE_GLOG=0 -DCMAKE_INSTALL_PREFIX:PATH=C:\tmpfs\src\github\python-crc32c\build\RelWithDebInfo ..
+    py -!python_version_trimmed!-64 -m cmake -G "Visual Studio 17 2022" -A x64 -DCMAKE_POLICY_VERSION_MINIMUM=3.12 -DCRC32C_BUILD_BENCHMARKS=no -DCRC32C_BUILD_TESTS=no -DBUILD_SHARED_LIBS=yes -DCMAKE_WINDOWS_EXPORT_ALL_SYMBOLS=yes -DCRC32C_USE_GLOG=0 -DCMAKE_INSTALL_PREFIX:PATH="%CRC32C_INSTALL_PREFIX%" ..
 
     py -!python_version_trimmed!-64 -m cmake --build . --config "%CONFIGURATION%" --target install