Added "make abc" and "make install-abc"

.gitignore

@@ -9,7 +9,9 @@ qtcreator.config
 qtcreator.creator
 qtcreator.creator.user
 Makefile.conf
+abc
 yosys
+yosys-abc
 yosys-config
 yosys-filterlib
 yosys-svgviewer

Makefile

@@ -83,6 +83,11 @@ yosys-svgviewer: libs/svgviewer/*.h libs/svgviewer/*.cpp
 	cd libs/svgviewer && qmake-qt4 && make
 	cp libs/svgviewer/svgviewer yosys-svgviewer
 
+abc:
+	test -d abc || hg clone https://bitbucket.org/alanmi/abc abc
+	cd abc && hg pull && make
+	cp abc/abc yosys-abc
+
 test: yosys
 	cd tests/simple && bash run-test.sh
 	cd tests/hana && bash run-test.sh
@@ -91,6 +96,9 @@ test: yosys
 install: $(TARGETS)
 	install $(TARGETS) /usr/local/bin/
 
+install-abc:
+	install yosys-abc /usr/local/bin/
+
 clean:
 	rm -f $(OBJS) $(GENFILES) $(TARGETS)
 	rm -f libs/*/*.d frontends/*/*.d passes/*/*.d backends/*/*.d kernel/*.d
@@ -128,6 +136,6 @@ config-gprof: clean
 -include backends/*/*.d
 -include kernel/*.d
 
-.PHONY: all top-all test clean mrproper qtcreator
+.PHONY: all top-all abc test install install-abc clean mrproper qtcreator
 .PHONY: config-clean config-clang-debug config-gcc-debug config-release
 

README

@@ -63,6 +63,11 @@ To build Yosys simply type 'make' in this directory.
 	$ make test
 	$ sudo make install
 
+To also build and install ABC (recommended) use the following commands:
+
+	$ make abc
+	$ sudo make install-abc
+
 Yosys can be used with the interactive command shell, with
 synthesis scripts or with command line arguments. Let's perform
 a simple synthesis job using the interactive command shell:

passes/abc/abc.cc

@@ -630,6 +630,7 @@ struct AbcPass : public Pass {
 	AbcPass() : Pass("abc", "use ABC for technology mapping") { }
 	virtual void help()
 	{
+		//   |---v---|---v---|---v---|---v---|---v---|---v---|---v---|---v---|---v---|---v---|
 		log("\n");
 		log("    abc [options] [selection]\n");
 		log("\n");
@@ -637,8 +638,8 @@ struct AbcPass : public Pass {
 		log("library to a target architecture.\n");
 		log("\n");
 		log("    -exe <command>\n");
-		log("        use the specified command name instead of \"abc\" to execute ABC. This\n");
-		log("        can e.g. be used to call a specific version of ABC or a wrapper script.\n");
+		log("        use the specified command name instead of \"yosys-abc\" to execute ABC.\n");
+		log("        This can e.g. be used to call a specific version of ABC or a wrapper.\n");
 		log("\n");
 		log("    -script <file>\n");
 		log("        use the specified ABC script file instead of the default script.\n");
@@ -664,7 +665,7 @@ struct AbcPass : public Pass {
 		log_header("Executing ABC pass (technology mapping using ABC).\n");
 		log_push();
 
-		std::string exe_file = "abc";
+		std::string exe_file = "yosys-abc";
 		std::string script_file, liberty_file;
 		bool cleanup = true;