Add embedded jdk support for s390x

This patch follows a similar approach used in PR
bazelbuild#11436 to add support
for embedding OpenJDK in bazel on s390x.

Similar to ppc, the openjdk used will be downloadded from adoptopenjdk website.

Author: Ruixin Bao

WORKSPACE

@@ -360,6 +360,15 @@ http_file(
     ],
 )
 
+http_file(
+    name = "openjdk_linux_s390x_vanilla",
+    downloaded_file_path="adoptopenjdk-s390x-vanilla.tar.gz",
+    sha256 = "d9b72e87a1d3ebc0c9552f72ae5eb150fffc0298a7cb841f1ce7bfc70dcd1059",
+    urls = [
+        "https://github.com/AdoptOpenJDK/openjdk11-binaries/releases/download/jdk-11.0.7%2B10/OpenJDK11U-jdk_s390x_linux_hotspot_11.0.7_10.tar.gz",
+    ],
+)
+
 http_file(
     name = "openjdk_macos",
     downloaded_file_path = "zulu-macos.tar.gz",
@@ -758,6 +767,19 @@ http_archive(
     ],
 )
 
+# This must be kept in sync with src/main/java/com/google/devtools/build/lib/bazel/rules/java/jdk.WORKSPACE.
+http_archive(
+    name = "remotejdk11_linux_s390x_for_testing",
+    build_file = "@local_jdk//:BUILD.bazel",
+    patch_cmds = EXPORT_WORKSPACE_IN_BUILD_BAZEL_FILE,
+    patch_cmds_win = EXPORT_WORKSPACE_IN_BUILD_BAZEL_FILE_WIN,
+    sha256 = "d9b72e87a1d3ebc0c9552f72ae5eb150fffc0298a7cb841f1ce7bfc70dcd1059",
+    strip_prefix = "jdk-11.0.7+10",
+    urls = [
+        "https://github.com/AdoptOpenJDK/openjdk11-binaries/releases/download/jdk-11.0.7%2B10/OpenJDK11U-jdk_s390x_linux_hotspot_11.0.7_10.tar.gz",
+    ],
+)
+
 # This must be kept in sync with src/main/java/com/google/devtools/build/lib/bazel/rules/java/jdk.WORKSPACE.
 http_archive(
     name = "remotejdk11_macos_for_testing",

src/BUILD

@@ -229,6 +229,9 @@ filegroup(
         "//src/conditions:linux_ppc64le": [
             "@openjdk_linux_ppc64le_vanilla//file",
         ],
+        "//src/conditions:linux_s390x": [
+            "@openjdk_linux_s390x_vanilla//file",
+        ],
         "//conditions:default": [
             "@openjdk_linux_vanilla//file",
         ],
@@ -769,6 +772,7 @@ filegroup(
         "@remotejdk11_linux_aarch64_for_testing//:WORKSPACE",
         "@remotejdk11_linux_for_testing//:WORKSPACE",
         "@remotejdk11_linux_ppc64le_for_testing//:WORKSPACE",
+        "@remotejdk11_linux_s390x_for_testing//:WORKSPACE",
         "@remotejdk11_macos_for_testing//:WORKSPACE",
         "@remotejdk11_win_for_testing//:WORKSPACE",
         "@remotejdk14_linux_for_testing//:WORKSPACE",

src/main/java/com/google/devtools/build/lib/bazel/rules/java/jdk.WORKSPACE

@@ -130,6 +130,18 @@ maybe(
     ],
 )
 
+# This must be kept in sync with the top-level WORKSPACE file.
+maybe(
+    http_archive,
+    name = "remotejdk11_linux_s390x",
+    build_file = "@local_jdk//:BUILD.bazel",
+    sha256 = "d9b72e87a1d3ebc0c9552f72ae5eb150fffc0298a7cb841f1ce7bfc70dcd1059",
+    strip_prefix = "jdk-11.0.7+10",
+    urls = [
+        "https://github.com/AdoptOpenJDK/openjdk11-binaries/releases/download/jdk-11.0.7%2B10/OpenJDK11U-jdk_s390x_linux_hotspot_11.0.7_10.tar.gz",
+    ],
+)
+
 # This must be kept in sync with the top-level WORKSPACE file.
 maybe(
     http_archive,

src/minimize_jdk.sh

@@ -31,7 +31,7 @@ fi
 fulljdk=$1
 out=$3
 ARCH=`uname -p`
-if [[ "${ARCH}" == 'ppc64le' ]]; then
+if [[ "${ARCH}" == 'ppc64le'  ]] || [[ "${ARCH}" == 's390x' ]]; then
   FULL_JDK_DIR="jdk*"
   DOCS=""
 else

src/test/py/bazel/test_base.py

@@ -59,6 +59,7 @@ class TestBase(unittest.TestCase):
       'remotejdk11_linux_for_testing',
       'remotejdk11_linux_aarch64_for_testing',
       'remotejdk11_linux_ppc64le_for_testing',
+      'remotejdk11_linux_s390x_for_testing',
       'remotejdk11_macos_for_testing',
       'remotejdk11_win_for_testing',
       'remotejdk14_linux_for_testing',

src/test/shell/testenv.sh

@@ -300,6 +300,7 @@ EOF
         "remotejdk11_linux_for_testing"
         "remotejdk11_linux_aarch64_for_testing"
         "remotejdk11_linux_ppc64le_for_testing"
+        "remotejdk11_linux_s390x_for_testing"
         "remotejdk11_macos_for_testing"
         "remotejdk11_win_for_testing"
         "remotejdk14_linux_for_testing"

tools/jdk/BUILD

@@ -504,6 +504,7 @@ alias(
             "//src/conditions:linux_aarch64": "@remotejdk11_linux_aarch64//:jdk",
             "//src/conditions:linux_x86_64": "@remotejdk11_linux//:jdk",
             "//src/conditions:linux_ppc64le": "@remotejdk11_linux_ppc64le//:jdk",
+            "//src/conditions:linux_s390x": "@remotejdk11_linux_s390x//:jdk",
         },
         no_match_error = "Could not find a JDK for host execution environment, please explicitly" +
                          " provide one using `--host_javabase.`",