bazel: test bazel configuration on a few designs

Signed-off-by: Øyvind Harboe <[email protected]>

Author: oharboe

flow/.bazelrc

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+build --incompatible_strict_action_env
+try-import %workspace%/.user-bazelrc

flow/.bazelversion

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+7.2.1

flow/BUILD.bazel

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+load("@bazel-orfs//:openroad.bzl", "orfs_flow")
+
+filegroup(
+    name = "constraints-sdc",
+    srcs = [
+        "designs/asap7/gcd/constraint.sdc",
+    ],
+    visibility = [":__subpackages__"],
+)
+
+orfs_flow(
+    name = "gcd",
+    stage_args = {
+        "synth": {
+            "SDC_FILE": "$(location :constraints-sdc)",
+        },
+        "floorplan": {
+            "DIE_AREA": "0 0 16.2 16.2",
+            "CORE_AREA": "1.08 1.08 15.12 15.12",
+        },
+        "place": {
+            "PLACE_DENSITY": "0.35",
+        },
+    },
+    stage_sources = {
+        "synth": [":constraints-sdc"],
+    },
+    verilog_files = glob(include=["designs/src/gcd/*.v"]),
+)

flow/MODULE.bazel

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+module(
+    name = "orfs",
+    version = "0.0.1",
+    compatibility_level = 1,
+)
+
+bazel_dep(name = "bazel-orfs")
+git_override(
+    module_name = "bazel-orfs",
+    commit = "16eb5dd5b31bdeacc0b3006a71dbce29076e9850",
+    remote = "https://github.com/The-OpenROAD-Project/bazel-orfs.git",
+)
+
+# Read: https://github.com/The-OpenROAD-Project/bazel-orfs?tab=readme-ov-file#usage
+#
+# TL;DR
+#
+# 1. uncomment below
+# 2. comment git_override() above
+#
+#local_path_override(
+#   module_name = "bazel-orfs", path = "../bazel-orfs"
+#)
+
+orfs = use_extension("@bazel-orfs//:extension.bzl", "orfs_repositories")
+orfs.default(
+    image = "openroad/orfs:v3.0-1114-g46acc762",
+    sha256 = "ae4df23391c26bcc48a506f8e0d0da73742d1b6cb3b1dc02f4d5ea71170195b5",
+)

flow/MODULE.bazel.lock

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+# This file marks the root of the Bazel workspace.
+# See MODULE.bazel for external dependencies setup.