From 38e7fa6530f0c5ba5044dcd79f391e49fcdef84c Mon Sep 17 00:00:00 2001
From: Clifford Wolf <clifford@clifford.at>
Date: Wed, 27 Nov 2013 09:08:35 +0100
Subject: Tighter integration of ABC build

---
 CHANGELOG               | 11 +++++++++++
 Makefile                | 23 ++++++++++++++++++++---
 README                  |  6 ++----
 passes/abc/Makefile.inc |  2 ++
 4 files changed, 35 insertions(+), 7 deletions(-)
 create mode 100644 CHANGELOG

diff --git a/CHANGELOG b/CHANGELOG
new file mode 100644
index 000000000..fe0534c0e
--- /dev/null
+++ b/CHANGELOG
@@ -0,0 +1,11 @@
+
+List of incompatible changes and major milestones between releases
+==================================================================
+
+
+Yosys 0.1.0 .. Yoys 0.1.0+
+--------------------------
+
+ - Tighter integration of ABC build with Yosys build. The make
+   targets 'make abc' and 'make install-abc' are now obsolete.
+
diff --git a/Makefile b/Makefile
index 40bc61f4d..c477c93d5 100644
--- a/Makefile
+++ b/Makefile
@@ -3,9 +3,13 @@ CONFIG := clang-debug
 # CONFIG := gcc-debug
 # CONFIG := release
 
+# features (the more the better)
 ENABLE_TCL := 1
 ENABLE_QT4 := 1
 ENABLE_MINISAT := 1
+ENABLE_ABC := 1
+
+# other configuration flags
 ENABLE_GPROF := 0
 
 DESTDIR := /usr/local
@@ -61,6 +65,10 @@ ifeq ($(ENABLE_QT4),1)
 TARGETS += yosys-svgviewer
 endif
 
+ifeq ($(ENABLE_ABC),1)
+TARGETS += yosys-abc
+endif
+
 OBJS += kernel/driver.o kernel/register.o kernel/rtlil.o kernel/log.o kernel/calc.o
 
 OBJS += libs/bigint/BigIntegerAlgorithms.o libs/bigint/BigInteger.o libs/bigint/BigIntegerUtils.o
@@ -107,6 +115,18 @@ endif
 	cd abc && $(MAKE)
 	cp abc/abc yosys-abc
 
+abc/abc-$(ABCREV):
+	if test "`cd abc && hg identify`" != "$(ABCREV)"; then \
+		test $(ABCPULL) -ne 0 || { echo; echo "!!! ABC not up to date and ABCPULL set to 0 in Makefile !!!"; echo; exit 1; }; \
+		test -d abc || hg clone https://bitbucket.org/alanmi/abc abc; \
+		cd abc && hg pull && hg update -r $(ABCREV); \
+	fi
+	cd abc && $(MAKE)
+	cp abc/abc abc/abc-$(ABCREV)
+
+yosys-abc: abc/abc-$(ABCREV)
+	cp abc/abc-$(ABCREV) yosys-abc
+
 test: yosys
 	cd tests/simple && bash run-test.sh
 	cd tests/hana && bash run-test.sh
@@ -118,9 +138,6 @@ install: $(TARGETS) $(EXTRA_TARGETS)
 	$(INSTALL_SUDO) mkdir -p $(DESTDIR)/share/yosys
 	$(INSTALL_SUDO) cp -r share/. $(DESTDIR)/share/yosys/.
 
-install-abc:
-	$(INSTALL_SUDO) install yosys-abc $(DESTDIR)/bin/
-
 manual:
 	cd manual && bash make.sh
 
diff --git a/README b/README
index 940689689..650095472 100644
--- a/README
+++ b/README
@@ -93,10 +93,8 @@ To build Yosys simply type 'make' in this directory.
 If you encounter any problems during build, make sure to check the section
 "Workarounds for known build problems" at the end of this README file.
 
-To also build and install ABC (recommended) use the following commands:
-
-	$ make abc
-	$ sudo make install-abc
+Note that this also downloads, builds and installs ABC (using yosys-abc
+as executeable name).
 
 Yosys can be used with the interactive command shell, with
 synthesis scripts or with command line arguments. Let's perform
diff --git a/passes/abc/Makefile.inc b/passes/abc/Makefile.inc
index 91a571c3d..dbb7496cf 100644
--- a/passes/abc/Makefile.inc
+++ b/passes/abc/Makefile.inc
@@ -1,5 +1,7 @@
 
+ifeq ($(ENABLE_ABC),1)
 OBJS += passes/abc/abc.o
 OBJS += passes/abc/vlparse.o
 OBJS += passes/abc/blifparse.o
+endif
 
-- 
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