From 58a515d57f137b0dab9708eebaffaff6d101c98b Mon Sep 17 00:00:00 2001
From: Miodrag Milanovic <mmicko@gmail.com>
Date: Mon, 31 Mar 2025 16:19:45 +0200
Subject: [PATCH 1/2] yosys-config: Propagate exit code for help command

---
 misc/yosys-config.in | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

diff --git a/misc/yosys-config.in b/misc/yosys-config.in
index 2d9c35e4d..34cf3b53b 100755
--- a/misc/yosys-config.in
+++ b/misc/yosys-config.in
@@ -37,11 +37,11 @@ help() {
 		echo "  $0 --datdir/simlib.v"
 		echo ""
 	} >&2
-	exit 1
+	exit $1
 }
 
 if [ $# -eq 0 ]; then
-	help
+	help 1
 fi
 
 if [ "$1" = "--build" ]; then
@@ -83,7 +83,7 @@ for opt; do
 			tokens=( "${tokens[@]}" '@DATDIR@'"${opt#${prefix}datdir}" ) ;;
 		--help|-\?|-h)
 			if [ ${#tokens[@]} -eq 0 ]; then
-				help
+				help 0
 			else
 				tokens=( "${tokens[@]}" "$opt" )
 			fi ;;

From 66d7ffb2c55f8e1606b20ec13f7ea566438cf017 Mon Sep 17 00:00:00 2001
From: Miodrag Milanovic <mmicko@gmail.com>
Date: Tue, 1 Apr 2025 08:39:11 +0200
Subject: [PATCH 2/2] yosys-config: redirect to stderr/stdout depending of exit
 code

---
 Makefile             | 4 ++--
 misc/yosys-config.in | 2 +-
 2 files changed, 3 insertions(+), 3 deletions(-)

diff --git a/Makefile b/Makefile
index 74128b41d..2efe23eea 100644
--- a/Makefile
+++ b/Makefile
@@ -1049,7 +1049,7 @@ define DOC_USAGE_STDERR
 docs/source/generated/$(1): $(TARGETS) docs/source/generated FORCE
 	-$(Q) ./$(PROGRAM_PREFIX)$(1) --help 2> $$@
 endef
-DOCS_USAGE_STDERR := yosys-config yosys-filterlib
+DOCS_USAGE_STDERR := yosys-filterlib
 
 # The in-tree ABC (yosys-abc) is only built when ABCEXTERNAL is not set.
 ifeq ($(ABCEXTERNAL),)
@@ -1063,7 +1063,7 @@ define DOC_USAGE_STDOUT
 docs/source/generated/$(1): $(TARGETS) docs/source/generated
 	$(Q) ./$(PROGRAM_PREFIX)$(1) --help > $$@ || rm $$@
 endef
-DOCS_USAGE_STDOUT := yosys yosys-smtbmc yosys-witness
+DOCS_USAGE_STDOUT := yosys yosys-smtbmc yosys-witness yosys-config
 $(foreach usage,$(DOCS_USAGE_STDOUT),$(eval $(call DOC_USAGE_STDOUT,$(usage))))
 
 docs/usage: $(addprefix docs/source/generated/,$(DOCS_USAGE_STDOUT) $(DOCS_USAGE_STDERR))
diff --git a/misc/yosys-config.in b/misc/yosys-config.in
index 34cf3b53b..758ba79a9 100755
--- a/misc/yosys-config.in
+++ b/misc/yosys-config.in
@@ -36,7 +36,7 @@ help() {
 		echo ""
 		echo "  $0 --datdir/simlib.v"
 		echo ""
-	} >&2
+	} >&$(( $1 + 1))
 	exit $1
 }