bazel: bump bazel-orfs for single-writer 1_synth.sdc (fixes RBE)

MODULE.bazel

@@ -119,7 +119,7 @@ bazel_dep(name = "rules_nodejs", version = "6.7.3", dev_dependency = True)
 bazel_dep(name = "bazel-orfs", dev_dependency = True)
 bazel_dep(name = "bazel-orfs-verilog", dev_dependency = True)
 
-BAZEL_ORFS_COMMIT = "78f19f25cec73bdec3517a76465dec7ce17ce227"
+BAZEL_ORFS_COMMIT = "90ad965f712f5317b67e08afd84e66425fcf6dd5"
 
 BAZEL_ORFS_REMOTE = "https://github.com/The-OpenROAD-Project/bazel-orfs.git"
 
@@ -151,6 +151,9 @@ archive_override(
     patch_strip = 1,
     patches = [
         "//bazel/bazel-orfs-patches:0035-fix-remove-non-root-overrides-from-MODULE.bazel.patch",
+        # Mirror of bazel-orfs patches/0037 (ORFS PR #4333), adapted to the
+        # ORFS_COMMIT pinned here. Drop at the next ORFS bump once #4333 lands.
+        "//bazel/bazel-orfs-patches:0036-orfs-single-writer-1_synth-sdc.patch",
     ],
     sha256 = "8325c6755215857a87a84db078d47dfbb2dfcbef70eaf0dd376fe5a7a363cd58",
     strip_prefix = "OpenROAD-flow-scripts-" + ORFS_COMMIT,
@@ -160,6 +163,19 @@ archive_override(
 bazel_dep(name = "yosys", version = "0.62.bcr.2", dev_dependency = True)
 bazel_dep(name = "yosys-slang", version = "0.0.0", dev_dependency = True)
 
+# BCR's yosys-slang 0.0.0 source.json points at the GitHub tarball of
+# povik/yosys-slang@6760afa2; after the repo's rename GitHub regenerated
+# that tarball (new bytes, top-level dir now sv-elab-<sha>), so fresh
+# fetches fail BCR's integrity check. Same commit, content verified
+# identical to the git tree; only integrity and strip_prefix corrected.
+# Drop once BCR publishes a fixed yosys-slang entry.
+archive_override(
+    module_name = "yosys-slang",
+    integrity = "sha256-NBmPLtey0xdcPOPJ+xxskfKNvP5THZe5HWsSxIQxve8=",
+    strip_prefix = "sv-elab-6760afa2c9b9ba231a9c6a9e94f0939dd39f0a20",
+    urls = ["https://github.com/povik/yosys-slang/archive/6760afa2c9b9ba231a9c6a9e94f0939dd39f0a20.tar.gz"],
+)
+
 # --- Extensions ---
 
 llvm = use_extension(
@@ -264,3 +280,20 @@ single_version_override(
     patches = ["//bazel:scip_tinycthread_tny_prefix.patch"],
     version = "9.2.3",
 )
+
+# sed-4.9's gnulib lib/memchr.c only `#undef memchr` inside glibc's own
+# build (_LIBC); on glibc 2.41+ <string.h> defines memchr as a _Generic
+# macro, so the `__memchr (...)` function header expands into
+# "_Generic(...)(...)"  and clang rejects it. Force the undef to run
+# unconditionally. Mirrored from bazel-orfs's MODULE.bazel: sed is pulled
+# in via bazel-orfs, whose single_version_override is ignored when
+# OpenROAD is the root module.
+single_version_override(
+    module_name = "sed",
+    patch_cmds = [
+        # -i.bak (not bare -i) so BSD sed on macOS accepts it too.
+        "sed -i.bak 's|^#ifdef _LIBC$|#if 1|' lib/memchr.c",
+        "rm lib/memchr.c.bak",
+    ],
+    version = "4.9.bcr.5",
+)

bazel/bazel-orfs-patches/0036-orfs-single-writer-1_synth-sdc.patch

@@ -0,0 +1,86 @@
+From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
+From: =?UTF-8?q?=C3=98yvind=20Harboe?= <oyvind.harboe@zylin.com>
+Date: Mon, 6 Jul 2026 11:17:45 +0200
+Subject: [PATCH] synth: single writer for 1_synth.sdc
+MIME-Version: 1.0
+Content-Type: text/plain; charset=UTF-8
+Content-Transfer-Encoding: 8bit
+
+Variant of ORFS PR #4333 against the ORFS_COMMIT pinned here
+(no synth_syn.tcl at this commit), plus the flow/BUILD.bazel
+exports_files(scripts/synth.tcl) that newer bazel-orfs needs for
+its _synth_tcl attr (already on ORFS master). Drop this patch at
+the next ORFS bump once #4333 lands.
+
+Signed-off-by: Øyvind Harboe <oyvind.harboe@zylin.com>
+---
+ flow/BUILD.bazel                | 9 +++++++++
+ flow/scripts/synth.tcl          | 4 ----
+ flow/scripts/synth_odb.tcl      | 9 ++++++---
+ flow/scripts/synth_preamble.tcl | 1 -
+ 4 files changed, 15 insertions(+), 8 deletions(-)
+
+diff --git a/flow/BUILD.bazel b/flow/BUILD.bazel
+index 62e012594..41add0830 100644
+--- a/flow/BUILD.bazel
++++ b/flow/BUILD.bazel
+@@ -5,6 +5,15 @@ exports_files(
+     visibility = ["//visibility:public"],
+ )
+
++# Expose synth.tcl as an addressable source label so bazel-orfs can
++# point its `_synth_tcl` attr default at `@orfs//flow:scripts/synth.tcl`
++# instead of vendoring its own (drifting) copy at the bazel-orfs repo
++# root. See bazel-orfs `private/rules.bzl`.
++exports_files(
++    ["scripts/synth.tcl"],
++    visibility = ["//visibility:public"],
++)
++
+ # files shared between scripts/synth.sh and scripts/flow.sh steps
+ MAKEFILE_SHARED = [
+     "scripts/variables.json",
+diff --git a/flow/scripts/synth.tcl b/flow/scripts/synth.tcl
+index 1c9e548c5..25a0728fd 100644
+--- a/flow/scripts/synth.tcl
++++ b/flow/scripts/synth.tcl
+@@ -273,7 +273,3 @@ if {
+
+ # Write synthesized design
+ write_verilog -nohex -nodec $::env(RESULTS_DIR)/1_2_yosys.v
+-# One day a more sophisticated synthesis will write out a modified
+-# .sdc file after synthesis. For now, just copy the input .sdc file,
+-# making synthesis more consistent with other stages.
+-log_cmd exec cp $::env(SDC_FILE) $::env(RESULTS_DIR)/1_synth.sdc
+diff --git a/flow/scripts/synth_odb.tcl b/flow/scripts/synth_odb.tcl
+index d6f53cda3..d0abab512 100644
+--- a/flow/scripts/synth_odb.tcl
++++ b/flow/scripts/synth_odb.tcl
+@@ -25,9 +25,12 @@ source_step_tcl PRE SYNTH
+ log_cmd eliminate_dead_logic
+
+ source_step_tcl POST SYNTH
+-orfs_write_db $::env(RESULTS_DIR)/1_synth.odb
++# Producing 1_synth.odb/.sdc is this step's contract:
++# unconditional, no WRITE_ODB_AND_SDC_EACH_STAGE.
++log_cmd write_db $::env(RESULTS_DIR)/1_synth.odb
+ # Canonicalize 1_synth.sdc. The original SDC_FILE provided by
+ # the user could have dependencies, such as sourcing util.tcl,
+ # which are read in here and a canonicalized version is written
+-# out by OpenSTA that has no dependencies.
+-orfs_write_sdc $::env(RESULTS_DIR)/1_synth.sdc
++# out by OpenSTA that has no dependencies. Sole writer of
++# 1_synth.sdc.
++log_cmd write_sdc -no_timestamp $::env(RESULTS_DIR)/1_synth.sdc
+diff --git a/flow/scripts/synth_preamble.tcl b/flow/scripts/synth_preamble.tcl
+index af43512c0..58c016a7a 100644
+--- a/flow/scripts/synth_preamble.tcl
++++ b/flow/scripts/synth_preamble.tcl
+@@ -14,7 +14,6 @@ if { [env_var_exists_and_non_empty SYNTH_NETLIST_FILES] } {
+     # keep things simple we just use the creation date
+     log_cmd exec cat {*}$::env(SYNTH_NETLIST_FILES) > $::env(RESULTS_DIR)/1_2_yosys.v
+   }
+-  log_cmd exec cp -p $::env(SDC_FILE) $::env(RESULTS_DIR)/1_synth.sdc
+   if { [env_var_exists_and_non_empty CACHED_REPORTS] } {
+     log_cmd exec cp -p {*}$::env(CACHED_REPORTS) $::env(REPORTS_DIR)/.
+   }