- Makefile, kernel/posix_compatibility.h/.cc: provide POSIX.2008 fake implementation of open_memstream()/fmemopen() for pre-POSIX.2008 systems.

- Makefile: OSX build rules (Apple's gcc and clang have no -rdynamic option and no librt).
 - Makefile: Generate debugger symbols and don't optimize for size in debug target (otherwise the debugger pretty hard to use).
 - Makefile: Reorder target concatenation in order to avoid use-before-built problems for source-include and linker dependencies.
 - Makefile: On OSX/macports, qmake-qt4 is named 'qmake' (the default Qt4 installation name, unless the distribution changes it).
 - Makefile: For OSX/Macports, we need to pass -I/opt/local/include and -L/opt/local/lib to give GNU libraries precedence over Apple's.
 - Makefile: Build a local minisat copy just like abc (to avoid dependency on broken/unmaintained distribution header files).
 - .gitignore: Ignore minisat directory.

.gitignore

@@ -9,6 +9,7 @@
 /qtcreator.creator
 /qtcreator.creator.user
 /Makefile.conf
+/minisat
 /abc
 /yosys
 /yosys-abc

Makefile

@@ -19,14 +19,24 @@ INSTALL_SUDO :=
 OBJS =
 GENFILES =
 EXTRA_TARGETS =
-TARGETS = yosys yosys-config
+TARGETS =
 
 all: top-all
 
-CXXFLAGS = -Wall -Wextra -ggdb -I"$(shell pwd)" -MD -D_YOSYS_ -fPIC
-LDFLAGS = -rdynamic
-LDLIBS = -lstdc++ -lreadline -lm -ldl -lrt
-QMAKE = qmake-qt4
+CXXFLAGS = -Wall -Wextra -ggdb -I"$(shell pwd)" -I${DESTDIR}/include -MD -D_YOSYS_ -fPIC -include kernel/posix_compatibility.h
+LDFLAGS = -I${DESTDIR}/lib
+LDLIBS = -lstdc++ -lreadline -lm -ldl
+
+ifeq (Darwin,$(findstring Darwin,$(shell uname)))
+	# add macports include and library path to search directories, don't use '-rdynamic' and '-lrt':
+	CXXFLAGS += -I/opt/local/include
+	LDFLAGS += -L/opt/local/lib
+	QMAKE = qmake
+else
+	LDFLAGS += -rdynamic
+	LDLIBS += -lrt
+	QMAKE = qmake-qt4
+endif
 
 YOSYS_VER := 0.2.0+
 GIT_REV := $(shell git rev-parse --short HEAD || echo UNKOWN)
@@ -41,16 +51,18 @@ OBJS = kernel/version_$(GIT_REV).o
 ABCREV = 2058c8ccea68
 ABCPULL = 1
 
+MINISATREV = HEAD
+
 -include Makefile.conf
 
 ifeq ($(CONFIG),clang-debug)
 CXX = clang
-CXXFLAGS += -std=c++11 -Os
+CXXFLAGS += -std=c++11 -g -O0 -Wall
 endif
 
 ifeq ($(CONFIG),gcc-debug)
 CXX = gcc
-CXXFLAGS += -std=gnu++0x -Os
+CXXFLAGS += -std=gnu++0x -g -O0 -Wall
 endif
 
 ifeq ($(CONFIG),release)
@@ -70,8 +82,8 @@ CXXFLAGS += -pg -fno-inline
 LDFLAGS += -pg
 endif
 
-ifeq ($(ENABLE_QT4),1)
-TARGETS += yosys-svgviewer
+ifeq ($(ENABLE_MINISAT),1)
+TARGETS += yosys-minisat
 endif
 
 ifeq ($(ENABLE_ABC),1)
@@ -85,7 +97,14 @@ CXXFLAGS += $(patsubst %,-I$(VERIFIC_DIR)/%,$(VERIFIC_COMPONENTS)) -D'VERIFIC_DI
 LDLIBS += $(patsubst %,$(VERIFIC_DIR)/%/*-linux.a,$(VERIFIC_COMPONENTS))
 endif
 
-OBJS += kernel/driver.o kernel/register.o kernel/rtlil.o kernel/log.o kernel/calc.o
+# Build yosys after minisat and abc (we need to access the local copies of the downloaded/installed header files).
+TARGETS += yosys yosys-config
+
+ifeq ($(ENABLE_QT4),1)
+TARGETS += yosys-svgviewer
+endif
+
+OBJS += kernel/driver.o kernel/register.o kernel/rtlil.o kernel/log.o kernel/calc.o kernel/posix_compatibility.o
 
 OBJS += libs/bigint/BigIntegerAlgorithms.o libs/bigint/BigInteger.o libs/bigint/BigIntegerUtils.o
 OBJS += libs/bigint/BigUnsigned.o libs/bigint/BigUnsignedInABase.o
@@ -123,6 +142,13 @@ yosys-svgviewer: libs/svgviewer/*.h libs/svgviewer/*.cpp
 	cd libs/svgviewer && $(QMAKE) && make
 	cp libs/svgviewer/svgviewer yosys-svgviewer
 
+yosys-minisat: $(DESTDIR)/bin/minisat
+$(DESTDIR)/bin/minisat:
+	test -d minisat || ( git clone https://github.com/niklasso/minisat.git minisat && sed -i -e 's/PRIi64/ & /' minisat/minisat/utils/Options.h )
+	( cd minisat && git checkout $(MINISATREV) )
+	( cd minisat && $(MAKE) prefix=$(DESTDIR) DESTDIR="" config install )
+	@( cd minisat && echo "Installed minisat version `git describe --always --dirty` into $(DESTDIR)." )
+
 abc/abc-$(ABCREV):
 ifneq ($(ABCREV),default)
 	if ( cd abc && hg identify; ) | grep -q +; then \

kernel/posix_compatibility.cc

@@ -0,0 +1,134 @@
+/*
+ *  yosys -- Yosys Open SYnthesis Suite
+ *
+ *  Copyright (C) 2012  Clifford Wolf <clifford@clifford.at>
+ *  
+ *  Permission to use, copy, modify, and/or distribute this software for any
+ *  purpose with or without fee is hereby granted, provided that the above
+ *  copyright notice and this permission notice appear in all copies.
+ *  
+ *  THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+ *  WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+ *  MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+ *  ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ *  WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+ *  ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
+ *  OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+ *
+ */
+
+/**
+ *  POSIX.2008 fake implementation for pre-POSIX.2008 systems. (OSX, BSD, MINGW, CYGWIN, older Linux &c.)
+ */
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <errno.h>
+
+#if !(_XOPEN_SOURCE >= 700 || _POSIX_C_SOURCE >= 200809L)
+typedef struct memstream {
+	off_t pos;
+	off_t size;
+	char * buffer;
+	char ** bufp;
+	size_t * sizep;
+	bool realloc;
+} memstream_t;
+
+static int memstream_read (void * cookie, char * buf, int size)
+{
+	memstream_t * mem = (memstream_t *) cookie;
+	off_t available = mem->size - mem->pos;
+	if (available < 0)
+		available = 0;
+	if (size > available)
+		size = available;
+	memcpy(buf, mem->buffer + mem->pos, size);
+	mem->pos += size;
+	return size;
+}
+
+static int memstream_write (void * cookie, const char * buf, int size)
+{
+	memstream_t * mem = (memstream_t *) cookie;
+	off_t available = mem->size - mem->pos;
+	if (size > available) {
+		if (mem->realloc) {
+			mem->buffer = (char *) realloc(mem->buffer, mem->pos + size + 1);
+			memset(mem->buffer + mem->size, 0, mem->pos + size + 1 - mem->size);
+			mem->size = mem->pos + size;
+			if (mem->bufp)
+				*(mem->bufp) = mem->buffer;
+			if (mem->sizep)
+				*(mem->sizep) = mem->size;
+		} else {
+			size = available;
+		}
+	}
+	memcpy(mem->buffer + mem->pos, buf, sizeof(char) * size);
+	mem->pos += size;
+	return size;
+}
+
+static fpos_t memstream_seek (void * cookie, fpos_t offset, int whence)
+{
+	memstream_t * mem = (memstream_t *) cookie;
+	switch (whence) {
+	case SEEK_SET:
+		if (offset < 0)
+			goto error_inval;
+		mem->pos = offset;
+		return 0;
+	case SEEK_CUR:
+		if (mem->pos + offset < 0)
+			goto error_inval;
+		mem->pos += offset;
+		return 0;
+	case SEEK_END:
+		if (mem->size + offset < 0)
+			goto error_inval;
+		mem->pos = mem->size + offset;
+		break;
+	default:
+		goto error_inval;
+	}
+	return mem->pos;
+error_inval:
+	errno = EINVAL;
+	return -1;
+}
+
+static int memstream_close (void * cookie)
+{
+	memstream_t * mem = (memstream_t *) cookie;
+	if (mem->bufp)
+		*(mem->bufp) = mem->buffer;
+	if (mem->sizep)
+		*(mem->sizep) = mem->size;
+	free(cookie);
+	return 0;
+}
+
+FILE * fmemopen (void * buf, size_t size, const char * mode)
+{
+	memstream_t * mem = (memstream_t *) malloc(sizeof(memstream_t));
+	memset(mem, 0, sizeof(memstream_t));
+	mem->size = size;
+	mem->buffer = (char *) buf;
+	(void) mode;
+	return funopen(mem, memstream_read, memstream_write, memstream_seek, memstream_close);
+}
+
+FILE * open_memstream (char ** bufp, size_t * sizep)
+{
+	memstream_t * mem = (memstream_t *) malloc(sizeof(memstream_t));
+	memset(mem, 0, sizeof(memstream_t));
+	mem->bufp = bufp;
+	mem->sizep = sizep;
+	mem->realloc = true;
+	return funopen(mem, memstream_read, memstream_write, memstream_seek, memstream_close);
+}
+
+#endif
+

kernel/posix_compatibility.h

@@ -0,0 +1,40 @@
+/*
+ *  yosys -- Yosys Open SYnthesis Suite
+ *
+ *  Copyright (C) 2012  Clifford Wolf <clifford@clifford.at>
+ *  
+ *  Permission to use, copy, modify, and/or distribute this software for any
+ *  purpose with or without fee is hereby granted, provided that the above
+ *  copyright notice and this permission notice appear in all copies.
+ *  
+ *  THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+ *  WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+ *  MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+ *  ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ *  WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+ *  ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
+ *  OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+ *
+ */
+
+#ifndef POSIX_COMPATIBILITY_H
+#define POSIX_COMPATIBILITY_H
+
+#if defined(__cplusplus)
+extern "C" {
+#endif
+
+#include <stdio.h>
+#include <stdlib.h>
+
+#if !(_XOPEN_SOURCE >= 700 || _POSIX_C_SOURCE >= 200809L)
+FILE * open_memstream (char ** bufp, size_t * sizep);
+FILE * fmemopen (void * buf, size_t size, const char * mode);
+#endif
+
+#if defined(__cplusplus)
+}
+#endif
+
+#endif
+