From bacfe127c4b98b9b98f8bf2317022c197e77402b Mon Sep 17 00:00:00 2001
From: Krystine Sherwin <93062060+KrystalDelusion@users.noreply.github.com>
Date: Fri, 19 Jul 2024 14:30:16 +1200
Subject: [PATCH] Makefile: Add wget-abc target

`make wget-abc` will attempt to download abc release archive for most recent yosys tag.
This should provide a solution when downloading yosys from release tarballs.
May have issues if executing in a non-git repository state on a development version if an updated abc version is expected.
---
 Makefile | 18 ++++++++++++++++++
 1 file changed, 18 insertions(+)

diff --git a/Makefile b/Makefile
index bd95cd132..58a07cc85 100644
--- a/Makefile
+++ b/Makefile
@@ -790,11 +790,29 @@ check-git-abc:
 		echo "3. Initialize the submodule: Run 'git submodule update --init' to set up 'abc' as a submodule."; \
 		echo "4. Reapply your changes: Move your saved changes back to the 'abc' directory, if necessary."; \
 		exit 1; \
+	elif git status 2>&1 | grep 'fatal: not a git repository'; then \
+		echo "Did 'yosys' come from a release tarball?  Try call 'make wget-abc' to download matching 'abc' tarball."; \
+		exit 1; \
 	else \
 		echo "Initialize the submodule: Run 'git submodule update --init' to set up 'abc' as a submodule."; \
 		exit 1; \
 	fi
 
+.PHONY: wget-abc
+ABC_TAR := abc.tar.gz
+YOSYS_TAG := $(word 1,$(subst +, ,$(YOSYS_VER)))
+ABC_TAR_URL := https://github.com/YosysHQ/yosys/releases/download/yosys-$(YOSYS_TAG)/$(ABC_TAR)
+wget-abc:
+	@if [ -z "$$(find abc -type d -prune -empty 2>&1)" ]; then \
+		echo "Error: The 'abc' directory already has contents.  Clear 'abc' directory before continuing."; \
+		exit 1; \
+	else \
+		mkdir -p abc; \
+		wget -nc "$(ABC_TAR_URL)"; \
+		echo "Extracting '$(ABC_TAR)' contents."; \
+		tar xzf $(ABC_TAR) -C abc --strip-components=1; \
+	fi
+
 abc/abc$(EXE) abc/libabc.a: check-git-abc
 	$(P)
 	$(Q) mkdir -p abc && $(MAKE) -C $(PROGRAM_PREFIX)abc -f "$(realpath $(YOSYS_SRC)/abc/Makefile)" ABCSRC="$(realpath $(YOSYS_SRC)/abc/)" $(S) $(ABCMKARGS) $(if $(filter %.a,$@),PROG="abc",PROG="abc$(EXE)") MSG_PREFIX="$(eval P_OFFSET = 5)$(call P_SHOW)$(eval P_OFFSET = 10) ABC: " $(if $(filter %.a,$@),libabc.a)