From 2b67ad78bf533eec1134973aef4489823b7738b8 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Daniel=20Gr=C3=B6ber?= <dxld@darkboxed.org>
Date: Fri, 14 Mar 2025 21:23:33 +0100
Subject: [PATCH] mk: Fall back to cp if rsync is not available

---
 Makefile                     | 10 ++++++++--
 docs/source/_images/Makefile |  8 +++++++-
 2 files changed, 15 insertions(+), 3 deletions(-)

diff --git a/Makefile b/Makefile
index 89ffaef66..adaf57d0f 100644
--- a/Makefile
+++ b/Makefile
@@ -114,6 +114,12 @@ BISON ?= bison
 STRIP ?= strip
 AWK ?= awk
 
+ifneq ($(shell :; command -v rsync),)
+RSYNC_CP ?= rsync -rc
+else
+RSYNC_CP ?= cp -ru
+endif
+
 ifeq ($(OS), Darwin)
 PLUGIN_LINKFLAGS += -undefined dynamic_lookup
 LINKFLAGS += -rdynamic
@@ -1005,13 +1011,13 @@ docs/source/cmd/abc.rst: $(TARGETS) $(EXTRA_TARGETS)
 	$(Q) mkdir -p docs/source/cmd
 	$(Q) mkdir -p temp/docs/source/cmd
 	$(Q) cd temp && ./../$(PROGRAM_PREFIX)yosys -p 'help -write-rst-command-reference-manual'
-	$(Q) rsync -rc temp/docs/source/cmd docs/source
+	$(Q) $(RSYNC_CP) temp/docs/source/cmd docs/source
 	$(Q) rm -rf temp
 docs/source/cell/word_add.rst: $(TARGETS) $(EXTRA_TARGETS)
 	$(Q) mkdir -p docs/source/cell
 	$(Q) mkdir -p temp/docs/source/cell
 	$(Q) cd temp && ./../$(PROGRAM_PREFIX)yosys -p 'help -write-rst-cells-manual'
-	$(Q) rsync -rc temp/docs/source/cell docs/source
+	$(Q) $(RSYNC_CP) temp/docs/source/cell docs/source
 	$(Q) rm -rf temp
 
 docs/source/generated/cells.json: docs/source/generated $(TARGETS) $(EXTRA_TARGETS)
diff --git a/docs/source/_images/Makefile b/docs/source/_images/Makefile
index cc00050f1..71f52c578 100644
--- a/docs/source/_images/Makefile
+++ b/docs/source/_images/Makefile
@@ -3,6 +3,12 @@ all: examples all_tex
 # set a fake time in pdf generation to prevent unnecessary differences in output
 FAKETIME := TZ='Z' faketime -f '2022-01-01 00:00:00 x0,001'
 
+ifneq ($(shell :; command -v rsync),)
+RSYNC_CP ?= rsync -t
+else
+RSYNC_CP ?= cp -a
+endif
+
 # find all code example makefiles
 .PHONY: examples
 CODE_EXAMPLES := ../code_examples/*/Makefile
@@ -19,7 +25,7 @@ FORCE:
 ../%/Makefile: FORCE
 	@make -C $(@D) dots
 	@mkdir -p $*
-	@find $(@D) -name *.dot -exec rsync -t {} $* \;
+	@find $(@D) -name *.dot -exec $(RSYNC_CP) {} $* \;
 
 # find and build all tex files
 .PHONY: all_tex