kit

commit ec872f18f7cfdbe0a2e9b5ff84bc5f1db93f4475
parent 75b48f7fe468c2c4455f5451667ed023891a28a6
Author: Ryan Sepassi <rsepassi@gmail.com>
Date:   Tue, 16 Jun 2026 11:38:59 -0700

Use llvm-ar for ecosystem archive speed comparison

Diffstat:
M
mk/test.mk
 | 
4
+++-
M
scripts/ecosystem_speed.sh
 | 
6
+++---

2 files changed, 6 insertions(+), 4 deletions(-)
diff --git a/mk/test.mk b/mk/test.mk
@@ -330,11 +330,13 @@ provision-ecosystem:
 test-ecosystem: bin
 	@KIT=$(abspath $(BIN)) sh test/ecosystem/run.sh
 
+ECO_SPEED_AR ?= $(if $(filter command line,$(origin AR)),$(AR),llvm-ar)
+
 ecosystem-speed:
 	@if [ ! -x build/release/kit ]; then \
 	  $(MAKE) --no-print-directory RELEASE=1 bin; \
 	fi
-	@KIT=$(abspath build/release/kit) AR=$(AR) bash scripts/ecosystem_speed.sh
+	@KIT=$(abspath build/release/kit) AR=$(ECO_SPEED_AR) bash scripts/ecosystem_speed.sh
 
 # test-dist: one-command verification of the dist subsystem (content-addressed
 # store + signed packaging). Runs the CAS and pkg driver corpora, which cover
diff --git a/scripts/ecosystem_speed.sh b/scripts/ecosystem_speed.sh
@@ -3,7 +3,7 @@
 #
 # Phases are measured separately:
 #   compile: compile library TUs plus the driver TU to objects.
-#   archive: archive the kit-compiled library objects with kit ar vs host ar.
+#   archive: archive the kit-compiled library objects with kit ar vs llvm-ar.
 #   link:    link precompiled driver object plus static library into an app.
 #
 # Correctness remains owned by test/ecosystem/run.sh; this script is a timing
@@ -21,7 +21,7 @@ ECOSYS="$ROOT/scripts/ecosystem.sh"
 KIT="${KIT:-$ROOT/build/release/kit}"
 CLANG="${CLANG:-clang}"
 TCC="${TCC:-tcc}"
-HOST_AR="${AR:-ar}"
+HOST_AR="${AR:-llvm-ar}"
 RUNS="${ECO_SPEED_RUNS:-${RUNS:-5}}"
 TIMEOUT_S="${ECO_SPEED_TIMEOUT:-${TIMEOUT:-20}}"
 OPTS="${ECO_SPEED_OPTS:-O0 O1}"
@@ -46,7 +46,7 @@ env:
   KIT                 kit binary (default: build/release/kit)
   CLANG               clang binary (default: clang)
   TCC                 tcc binary (default: tcc; skipped if unavailable)
-  AR                  host ar binary (default: ar)
+  AR                  host archive binary (default: llvm-ar)
   ECO_SPEED_RUNS      best-of-N runs per row (default: 5)
   ECO_SPEED_TIMEOUT   phase timeout seconds per run (default: 20)
   ECO_SPEED_OPTS      opt levels, e.g. "O0 O1" (default: "O0 O1")