build: avoid the use of top_ and abs_ dir paths

Using them has the side effect of confusing the dependency-tracking logic.

src/Makefile.am

@@ -1,5 +1,5 @@
 AM_CPPFLAGS =  $(INCLUDES) \
-  -I$(top_builddir)/src/obj \
+  -I$(builddir)/obj \
   $(BDB_CPPFLAGS) \
   $(BOOST_CPPFLAGS) $(BOOST_INCLUDES)
 AM_CPPFLAGS += $(LEVELDB_CPPFLAGS)
@@ -8,10 +8,10 @@ AM_LDFLAGS = $(PTHREAD_CFLAGS)
 AM_CPPFLAGS += -I$(builddir)
 
 if EMBEDDED_LEVELDB
-LEVELDB_CPPFLAGS += -I$(top_srcdir)/src/leveldb/include
-LEVELDB_CPPFLAGS += -I$(top_srcdir)/src/leveldb/helpers/memenv
-LIBLEVELDB += $(top_builddir)/src/leveldb/libleveldb.a
-LIBMEMENV  += $(top_builddir)/src/leveldb/libmemenv.a
+LEVELDB_CPPFLAGS += -I$(srcdir)/leveldb/include
+LEVELDB_CPPFLAGS += -I$(srcdir)/leveldb/helpers/memenv
+LIBLEVELDB += $(builddir)/leveldb/libleveldb.a
+LIBMEMENV  += $(builddir)/leveldb/libmemenv.a
 
 # NOTE: This dependency is not strictly necessary, but without it make may try to build both in parallel, which breaks the LevelDB build system in a race
 $(LIBLEVELDB): $(LIBMEMENV)
@@ -101,7 +101,7 @@ JSON_H = \
   json/json_spirit_writer_template.h
 
 obj/build.h: FORCE
-	@$(MKDIR_P) $(abs_top_builddir)/src/obj
+	@$(MKDIR_P) $(builddir)/obj
 	@$(top_srcdir)/share/genbuild.sh $(abs_top_builddir)/src/obj/build.h \
 	  $(abs_top_srcdir)
 version.o: obj/build.h
@@ -164,7 +164,7 @@ libbitcoin_cli_a_SOURCES = \
   rpcclient.cpp \
   $(BITCOIN_CORE_H)
 
-nodist_libbitcoin_common_a_SOURCES = $(top_srcdir)/src/obj/build.h
+nodist_libbitcoin_common_a_SOURCES = $(srcdir)/obj/build.h
 #
 
 # bitcoind binary #

src/Makefile.qt.include

@@ -1,6 +1,6 @@
-AM_CPPFLAGS += -I$(top_srcdir)/src \
-  -I$(top_builddir)/src/qt \
-  -I$(top_builddir)/src/qt/forms \
+AM_CPPFLAGS += -I$(srcdir) \
+  -I$(builddir)/qt \
+  -I$(builddir)/qt/forms \
   $(PROTOBUF_CFLAGS) \
   $(QR_CFLAGS)
 bin_PROGRAMS += qt/bitcoin-qt
@@ -320,7 +320,7 @@ RES_MOVIES = $(wildcard qt/res/movies/spinner-*.png)
 BITCOIN_RC = qt/res/bitcoin-qt-res.rc
 
 qt_libbitcoinqt_a_CPPFLAGS = $(AM_CPPFLAGS) $(QT_INCLUDES) \
-  -I$(top_srcdir)/src/qt/forms $(QT_DBUS_INCLUDES)
+  -I$(srcdir)/qt/forms $(QT_DBUS_INCLUDES)
 qt_libbitcoinqt_a_SOURCES = $(BITCOIN_QT_CPP) $(BITCOIN_QT_H) $(QT_FORMS_UI) \
   $(QT_QRC) $(QT_TS) $(PROTOBUF_PROTO) $(RES_ICONS) $(RES_IMAGES) $(RES_MOVIES)
 
@@ -342,7 +342,7 @@ $(QT_MOC_CPP): $(PROTOBUF_H)
 
 # bitcoin-qt binary #
 qt_bitcoin_qt_CPPFLAGS = $(AM_CPPFLAGS) $(QT_INCLUDES) \
-  -I$(top_srcdir)/src/qt/forms
+  -I$(srcdir)/qt/forms
 qt_bitcoin_qt_SOURCES = qt/bitcoin.cpp
 if TARGET_DARWIN
   qt_bitcoin_qt_SOURCES += $(BITCOIN_MM)

src/Makefile.qttest.include

@@ -1,6 +1,6 @@
-AM_CPPFLAGS += -I$(top_srcdir)/src \
-  -I$(top_srcdir)/src/qt \
-  -I$(top_builddir)/src/qt \
+AM_CPPFLAGS += -I$(srcdir) \
+  -I$(srcdir)/qt \
+  -I$(builddir)/qt \
   $(PROTOBUF_CFLAGS) \
     $(QR_CFLAGS)
 bin_PROGRAMS += qt/test/test_bitcoin-qt

src/Makefile.test.include

@@ -1,4 +1,4 @@
-AM_CPPFLAGS += -I$(top_builddir)/src/test/
+AM_CPPFLAGS += -I$(builddir)/test/
 
 TESTS += test/test_bitcoin
 bin_PROGRAMS += test/test_bitcoin

src/m4/bitcoin_qt.m4

@@ -100,7 +100,7 @@ AC_DEFUN([BITCOIN_QT_CONFIGURE],[
   BITCOIN_QT_PATH_PROGS([LRELEASE], [lrelease-qt${bitcoin_qt_got_major_vers} lrelease${bitcoin_qt_got_major_vers} lrelease], $qt_bin_path)
   BITCOIN_QT_PATH_PROGS([LUPDATE], [lupdate-qt${bitcoin_qt_got_major_vers} lupdate${bitcoin_qt_got_major_vers} lupdate],$qt_bin_path, yes)
 
-  MOC_DEFS='-DHAVE_CONFIG_H -I$(top_srcdir)/src'
+  MOC_DEFS='-DHAVE_CONFIG_H -I$(srcdir)'
   case $host in
     *darwin*)
      BITCOIN_QT_CHECK([