Openmp flag

cc/config/sysroot_aarch64_ubuntu18_gcc8.4/Dockerfile

@@ -0,0 +1,67 @@
+# Copyright 2025 Google LLC
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#     https://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+# ==============================================================================
+
+FROM arm64v8/ubuntu:bionic
+
+RUN apt-get update && apt-get -y install \
+    build-essential \
+    gcc-8 g++-8 \
+    libomp-dev
+
+RUN rm -rf /usr/include/c++/7.5.0
+RUN rm -rf /usr/include/c++/7
+RUN rm -rf /usr/include/aarch64-linux-gnu/c++/7.5.0
+RUN rm -rf /usr/include/aarch64-linux-gnu/c++/7
+RUN rm -rf /usr/lib/gcc/aarch64-linux-gnu/7
+
+# Replace absulte links by relative in /usr/lib/aarch64-linux-gnu/ directory
+WORKDIR /usr/lib/aarch64-linux-gnu
+
+# /usr/lib/aarch64-linux-gnu/libBrokenLocale.so -> /lib/aarch64-linux-gnu/libBrokenLocale.so.1
+RUN ln -sfn ../../../lib/aarch64-linux-gnu/libBrokenLocale.so.1 ./libBrokenLocale.so
+# /usr/lib/aarch64-linux-gnu/libanl.so -> /lib/aarch64-linux-gnu/libanl.so.1
+RUN ln -sfn ../../../lib/aarch64-linux-gnu/libanl.so.1 ./libanl.so
+# /usr/lib/aarch64-linux-gnu/libcidn.so -> /lib/aarch64-linux-gnu/libcidn.so.1
+RUN ln -sfn ../../../lib/aarch64-linux-gnu/libcidn.so.1 ./libcidn.so
+# /usr/lib/aarch64-linux-gnu/libcrypt.so -> /lib/aarch64-linux-gnu/libcrypt.so.1
+RUN ln -sfn ../../../lib/aarch64-linux-gnu/libcrypt.so.1 ./libcrypt.so
+# /usr/lib/aarch64-linux-gnu/libdl.so -> /lib/aarch64-linux-gnu/libdl.so.2
+RUN ln -sfn ../../../lib/aarch64-linux-gnu/libdl.so.2 ./libdl.so
+# /usr/lib/aarch64-linux-gnu/libm.so -> /lib/aarch64-linux-gnu/libm.so.6
+RUN ln -sfn ../../../lib/aarch64-linux-gnu/libm.so.6 ./libm.so
+# /usr/lib/aarch64-linux-gnu/libnsl.so -> /lib/aarch64-linux-gnu/libnsl.so.1
+RUN ln -sfn ../../../lib/aarch64-linux-gnu/libnsl.so.1 ./libnsl.so
+# /usr/lib/aarch64-linux-gnu/libnss_compat.so -> /lib/aarch64-linux-gnu/libnss_compat.so.2
+RUN ln -sfn ../../../lib/aarch64-linux-gnu/libnss_compat.so.2 ./libnss_compat.so
+# /usr/lib/aarch64-linux-gnu/libnss_dns.so -> /lib/aarch64-linux-gnu/libnss_dns.so.2
+RUN ln -sfn ../../../lib/aarch64-linux-gnu/libnss_dns.so.2 ./libnss_dns.so
+# /usr/lib/aarch64-linux-gnu/libnss_files.so -> /lib/aarch64-linux-gnu/libnss_files.so.2
+RUN ln -sfn ../../../lib/aarch64-linux-gnu/libnss_files.so.2 ./libnss_files.so
+# /usr/lib/aarch64-linux-gnu/libnss_hesiod.so -> /lib/aarch64-linux-gnu/libnss_hesiod.so.2
+RUN ln -sfn ../../../lib/aarch64-linux-gnu/libnss_hesiod.so.2 ./libnss_hesiod.so
+# /usr/lib/aarch64-linux-gnu/libnss_nis.so -> /lib/aarch64-linux-gnu/libnss_nis.so.2
+RUN ln -sfn ../../../lib/aarch64-linux-gnu/libnss_nis.so.2 ./libnss_nis.so
+# /usr/lib/aarch64-linux-gnu/libnss_nisplus.so -> /lib/aarch64-linux-gnu/libnss_nisplus.so.2
+RUN ln -sfn ../../../lib/aarch64-linux-gnu/libnss_nisplus.so.2 ./libnss_nisplus.so
+# /usr/lib/aarch64-linux-gnu/libresolv.so -> /lib/aarch64-linux-gnu/libresolv.so.2
+RUN ln -sfn ../../../lib/aarch64-linux-gnu/libresolv.so.2 ./libresolv.so
+# /usr/lib/aarch64-linux-gnu/librt.so -> /lib/aarch64-linux-gnu/librt.so.1
+RUN ln -sfn ../../../lib/aarch64-linux-gnu/librt.so.1 ./librt.so
+# /usr/lib/aarch64-linux-gnu/libthread_db.so -> /lib/aarch64-linux-gnu/libthread_db.so.1
+RUN ln -sfn ../../../lib/aarch64-linux-gnu/libthread_db.so.1 ./libthread_db.so
+# /usr/lib/aarch64-linux-gnu/libutil.so -> /lib/aarch64-linux-gnu/libutil.so.1
+RUN ln -sfn ../../../lib/aarch64-linux-gnu/libutil.so.1 ./libutil.so
+
+WORKDIR /root

cc/config/sysroot_aarch64_ubuntu18_gcc8.4/create-sysroot.sh

@@ -0,0 +1,62 @@
+#!/bin/bash
+
+# Copyright 2025 Google LLC
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#     https://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+# ==============================================================================
+
+if [ "$#" -ne 1 ]; then
+    echo "Usage: $0 <version>"
+fi
+
+SYSROOT="$(basename "$(pwd)")"
+CONTAINER=$(echo "$SYSROOT" | sed -E 's/.*ubuntu([0-9]+).*/u\1sysroot/')
+
+echo "Please enter sysroot version (default: 0.1.0):"
+read VERSION
+if [ -z "$VERSION" ]; then
+    VERSION="0.1.0"
+fi
+
+ARCH_NAME=$SYSROOT-$VERSION
+
+# Remove old files and image
+rm -rf /tmp/$ARCH_NAME
+docker rm -f $CONTAINER
+docker rmi -f $ARCH_NAME:latest
+
+# Create docker image from Dockerfile
+echo -e "\nBuilding docker image $ARCH_NAME:latest"
+docker build -t $ARCH_NAME:latest .
+
+# Run docker image
+echo -e "\nRunning docker image $ARCH_NAME:latest, container name $CONTAINER"
+docker run -d --name $CONTAINER $ARCH_NAME:latest bash -c "sleep 20"
+
+echo -e "\nCopying files from docker container..."
+mkdir /tmp/$ARCH_NAME
+
+# Copy needed directories from Docker image
+docker cp $CONTAINER:/lib /tmp/$ARCH_NAME/
+docker cp $CONTAINER:/usr /tmp/$ARCH_NAME/
+# Remove not used directories
+rm -rf /tmp/$ARCH_NAME/lib/cpp
+rm -rf /tmp/$ARCH_NAME/usr/bin
+rm -rf /tmp/$ARCH_NAME/usr/games
+rm -rf /tmp/$ARCH_NAME/usr/sbin
+rm -rf /tmp/$ARCH_NAME/usr/share
+rm -rf /tmp/$ARCH_NAME/usr/src
+
+echo -e "\nCreating /tmp/$ARCH_NAME.tar.xz archive..."
+XZ_OPT="-T8"
+tar -cJf /tmp/$ARCH_NAME.tar.xz -C /tmp/ $ARCH_NAME

cc/config/sysroot_ubuntu18_aarch64.BUILD → cc/config/sysroot_aarch64_ubuntu18_gcc8.4/sysroot_aarch64_ubuntu18.BUILD

@@ -30,6 +30,9 @@ sysroot_package(
 GCC_VERSION = 8
 GLIBC_VERSION = "2.27"
 
+# Details about C RunTime (CRT) objects:
+# https://docs.oracle.com/cd/E88353_01/html/E37853/crt1.o-7.html
+# https://dev.gentoo.org/~vapier/crt.txt
 CRT_OBJECTS = [
     "crti",
     "crtn",
@@ -88,7 +91,6 @@ cc_toolchain_import(
         "lib/aarch64-linux-gnu/libgcc_s.so.1",
         "usr/lib/gcc/aarch64-linux-gnu/{gcc_version}/libgcc_eh.a".format(gcc_version = GCC_VERSION),
     ],
-    runtime_path = "/usr/lib/aarch64-linux-gnu",
     shared_library = "usr/lib/gcc/aarch64-linux-gnu/{gcc_version}/libgcc_s.so".format(gcc_version = GCC_VERSION),
     static_library = "usr/lib/gcc/aarch64-linux-gnu/{gcc_version}/libgcc.a".format(gcc_version = GCC_VERSION),
     visibility = ["//visibility:public"],
@@ -116,10 +118,10 @@ cc_toolchain_import(
 cc_toolchain_import(
     name = "dynamic_linker",
     additional_libs = [
+        "lib/ld-linux-aarch64.so.1",
         "lib/aarch64-linux-gnu/ld-linux-aarch64.so.1",
         "lib/aarch64-linux-gnu/ld-{glibc_version}.so".format(glibc_version = GLIBC_VERSION),
     ],
-    runtime_path = "/lib64",
     shared_library = "usr/lib/aarch64-linux-gnu/libdl.so",
     static_library = "usr/lib/aarch64-linux-gnu/libdl.a",
     deps = [":libc"],
@@ -153,25 +155,21 @@ cc_toolchain_import(
     additional_libs = [
         "lib/aarch64-linux-gnu/librt-{glibc_version}.so".format(glibc_version = GLIBC_VERSION),
         "lib/aarch64-linux-gnu/librt.so.1",
-        "usr/lib/aarch64-linux-gnu/librt.so",
-        "usr/lib/aarch64-linux-gnu/librt.a",
     ],
+    shared_library = "usr/lib/aarch64-linux-gnu/librt.so",
+    static_library = "usr/lib/aarch64-linux-gnu/librt.a",
     visibility = ["//visibility:private"],
 )
 
 cc_toolchain_import(
     name = "libc",
     additional_libs = [
         "lib/aarch64-linux-gnu/libc.so.6",
+        "lib/aarch64-linux-gnu/libc-{glibc_version}.so".format(glibc_version = GLIBC_VERSION),
         "usr/lib/aarch64-linux-gnu/libc_nonshared.a",
     ],
-    runtime_path = "/usr/lib/gcc/aarch64-linux-gnu/{gcc_version}".format(gcc_version = GCC_VERSION),
     shared_library = "usr/lib/aarch64-linux-gnu/libc.so",
     static_library = "usr/lib/aarch64-linux-gnu/libc.a",
-    #target_compatible_with = select({
-    #    "@platforms//os:linux": ["@platforms//cpu:aarch64"],
-    #    "//conditions:default": ["@platforms//:incompatible"],
-    #}),
     visibility = ["//visibility:public"],
     deps = [
         ":gcc",
@@ -182,14 +180,25 @@ cc_toolchain_import(
     ],
 )
 
-# This is a group of all the system libraries we need. The actual glibc library is split
-# out to fix link ordering problems that cause false undefined symbol positives.
+# Application Programming Interface (API) for shared-memory parallel programming.
 cc_toolchain_import(
-    name = "glibc",
-    runtime_path = "/lib/aarch64-linux-gnu",
+    name = "openmp",
+    additional_libs = glob([
+        "usr/lib/aarch64-linux-gnu/libgomp*",
+        "usr/lib/aarch64-linux-gnu/libomp*",
+    ]),
     visibility = ["//visibility:public"],
+)
+
+# This is a group of all the system libraries we need. The actual essential libraries is split
+# out to fix link ordering problems that cause false undefined symbol positives.
+cc_toolchain_import(
+    name = "libs",
     deps = [
         ":dynamic_linker",
         ":libc",
+        ":openmp",
+        ":pthread",
     ],
+    visibility = ["//visibility:public"],
 )

cc/config/sysroot_darwin_aarch64.BUILD

@@ -133,18 +133,14 @@ cc_toolchain_import(
 # This is a group of all the system libraries we need. The actual glibc library is split
 # out to fix link ordering problems that cause false undefined symbol positives.
 cc_toolchain_import(
-    name = "glibc",
+    name = "libs",
     #runtime_path = "usr/lib",
-    #target_compatible_with = select({
-    #    "@platforms//os:macos": ["@platforms//cpu:aarch64"],
-    #    "//conditions:default": ["@platforms//:incompatible"],
-    #}),
-    visibility = ["//visibility:public"],
     deps = [
         ":system",
         ":libm",
         ":stdc++",
         ":objc",
         ":core_foundation",
     ],
+    visibility = ["//visibility:public"],
 )

cc/config/sysroot_ubuntu18_x86_64_gcc9.BUILD

@@ -169,22 +169,24 @@ cc_toolchain_import(
     ],
     shared_library = "usr/lib/x86_64-linux-gnu/libc.so",
     static_library = "usr/lib/x86_64-linux-gnu/libc.a",
-    visibility = ["//visibility:public"],
     deps = [
         ":gcc",
         ":math",
         ":stdc++",
         ":rt",
     ],
+    visibility = ["//visibility:public"],
 )
 
-# This is a group of all the system libraries we need. The actual glibc library is split
+# This is a group of all the system libraries we need. The actual essential libraries is split
 # out to fix link ordering problems that cause false undefined symbol positives.
 cc_toolchain_import(
-    name = "glibc",
-    visibility = ["//visibility:public"],
+    name = "libs",
     deps = [
         ":dynamic_linker",
         ":libc",
+        ":openmp",
+        ":pthread",
     ],
+    visibility = ["//visibility:public"],
 )

cc/config/sysroot_ubuntu20_aarch64_gcc10.BUILD

@@ -163,23 +163,24 @@ cc_toolchain_import(
     #    "@platforms//os:linux": ["@platforms//cpu:aarch64"],
     #    "//conditions:default": ["@platforms//:incompatible"],
     #}),
-    visibility = ["//visibility:public"],
     deps = [
         ":gcc",
         ":math",
         ":stdc++",
         ":rt",
     ],
+    visibility = ["//visibility:public"],
 )
 
-# This is a group of all the system libraries we need. The actual glibc library is split
+# This is a group of all the system libraries we need. The actual essential libraries is split
 # out to fix link ordering problems that cause false undefined symbol positives.
 cc_toolchain_import(
-    name = "glibc",
-    runtime_path = "/lib/aarch64-linux-gnu",
-    visibility = ["//visibility:public"],
+    name = "libs",
     deps = [
         ":dynamic_linker",
         ":libc",
+        ":openmp",
+        ":pthread",
     ],
+    visibility = ["//visibility:public"],
 )

cc/config/sysroot_ubuntu20_x86_64_gcc10.BUILD

@@ -167,22 +167,34 @@ cc_toolchain_import(
     ],
     shared_library = "usr/lib/x86_64-linux-gnu/libc.so",
     static_library = "usr/lib/x86_64-linux-gnu/libc.a",
-    visibility = ["//visibility:public"],
     deps = [
         ":gcc",
         ":math",
         ":stdc++",
         ":rt",
     ],
+    visibility = ["//visibility:public"],
 )
 
-# This is a group of all the system libraries we need. The actual glibc library is split
-# out to fix link ordering problems that cause false undefined symbol positives.
+# Application Programming Interface (API) for shared-memory parallel programming.
 cc_toolchain_import(
-    name = "glibc",
+    name = "openmp",
+    additional_libs = glob([
+        "usr/lib/x86_64-linux-gnu/libgomp*",
+        "usr/lib/x86_64-linux-gnu/libomp*",
+    ]),
     visibility = ["//visibility:public"],
+)
+
+# This is a group of all the system libraries we need. The actual essential libraries is split
+# out to fix link ordering problems that cause false undefined symbol positives.
+cc_toolchain_import(
+    name = "libs",
     deps = [
         ":dynamic_linker",
         ":libc",
+        ":openmp",
+        ":pthread",
     ],
+    visibility = ["//visibility:public"],
 )