autotools: convert src/Makefile to an automake file

Makefile.am

 DATADIR=$(PREFIX)/share/espeak-data
 
 PLATFORM=big_endian
-AUDIO=@AUDIO@
 
 .PHONY: all clean distclean espeak-phoneme-data
 
 	cp $< $@
 
 src/libespeak.a: $(common_SOURCE) $(libespeak_SOURCE)
-	cd src && make libespeak.a AUDIO=${AUDIO} PREFIX=$(PREFIX) && cd ..
+	cd src && make libespeak.a PREFIX=$(PREFIX) && cd ..
 
 src/libespeak.so: $(common_SOURCE) $(libespeak_SOURCE)
-	cd src && make libespeak.so AUDIO=${AUDIO} PREFIX=$(PREFIX) && cd ..
+	cd src && make libespeak.so PREFIX=$(PREFIX) && cd ..
 
 src/speak: $(common_SOURCE) src/speak.cpp
-	cd src && make speak AUDIO=${AUDIO} PREFIX=$(PREFIX) && cd ..
+	cd src && make speak PREFIX=$(PREFIX) && cd ..
 
 src/espeak: src/libespeak.so src/espeak.cpp
-	cd src && make espeak AUDIO=${AUDIO} PREFIX=$(PREFIX) && cd ..
+	cd src && make espeak PREFIX=$(PREFIX) && cd ..
 
 src/espeakedit: $(common_SOURCE) $(libespeak_SOURCE) $(espeakedit_SOURCE)
-	cd src && make espeakedit AUDIO=${AUDIO} PREFIX=$(PREFIX) && cd ..
+	cd src && make espeakedit PREFIX=$(PREFIX) && cd ..
 
 espeak-phoneme-data:
 	cd platforms/$(PLATFORM) && make PREFIX=$(PREFIX) && cd ../..

configure.ac

 
 AC_SUBST(AUDIO)
 
+AM_CONDITIONAL(AUDIO_RUNTIME,    [test x"$AUDIO" = xruntime])
+AM_CONDITIONAL(AUDIO_PULSEAUDIO, [test x"$AUDIO" = xpulseaudio])
+AM_CONDITIONAL(AUDIO_PORTAUDIO,  [test x"$AUDIO" = xportaudio])
+AM_CONDITIONAL(AUDIO_PORTAUDIO0, [test x"$AUDIO" = xportaudio0])
+AM_CONDITIONAL(AUDIO_PORTAUDIO2, [test x"$AUDIO" = xportaudio2])
+AM_CONDITIONAL(AUDIO_SADA,       [test x"$AUDIO" = xsada])
+
 dnl ================================================================
 dnl Generate output.
 dnl ================================================================
 
-AC_CONFIG_FILES([Makefile])
+AC_CONFIG_FILES([Makefile src/Makefile])
 AC_OUTPUT
 
 AC_MSG_NOTICE([

src/Makefile → src/Makefile.am

 LN_SF = /bin/ln -sf
 MKDIR = mkdir -p
 
-# 'runtime' uses pulseaudio if it is running, else uses portaudio
-#AUDIO = runtime
-AUDIO = portaudio
-#AUDIO = portaudio0
-#AUDIO = portaudio2
-#AUDIO = pulseaudio
-#AUDIO = sada
-
-ifeq ($(AUDIO),runtime)
+# AUDIO='runtime' uses pulseaudio if it is running, else uses portaudio
+
+if AUDIO_RUNTIME
 WAVE=wave.cpp wave_pulse.cpp
 LIB_AUDIO=-lpulse -lpulse-simple -lportaudio
 USE_AUDIO=-DUSE_PULSEAUDIO -DUSE_PORTAUDIO
 else
-ifeq ($(AUDIO),pulseaudio)
+if AUDIO_PULSEAUDIO
 WAVE=wave_pulse.cpp
 LIB_AUDIO=-lpulse
 USE_AUDIO=-DUSE_PULSEAUDIO
 else
-ifeq ($(AUDIO),portaudio)
+if AUDIO_PORTAUDIO
 WAVE=wave.cpp
 LIB_AUDIO=-lportaudio
 USE_AUDIO=-DUSE_PORTAUDIO
 else
-ifeq ($(AUDIO),portaudio0)
+if AUDIO_PORTAUDIO0
 WAVE=wave.cpp
 LIB_AUDIO=/usr/lib/libportaudio.so.0
 USE_AUDIO=-DUSE_PORTAUDIO
 else
-ifeq ($(AUDIO),portaudio2)
+if AUDIO_PORTAUDIO2
 WAVE=wave.cpp
 LIB_AUDIO=/usr/lib/libportaudio.so.2
 USE_AUDIO=-DUSE_PORTAUDIO
 else
-ifeq ($(AUDIO),sada)
+if AUDIO_SADA
 WAVE=wave_sada.cpp
 USE_AUDIO=-DUSE_SADA
 else
 CPPFLAGS = -pedantic -fno-exceptions -D PATH_ESPEAK_DATA=\"$(DATADIR)\"
 
 .cpp.o:
-	# Compiling $@
 	$(CXX) $(CXXFLAGS) $(USE_AUDIO) -I. $(CPPFLAGS) $<
 
 e_%.o: %.cpp
-	# Compiling $@
 	$(CXX) $(CXXFLAGS) $(espeakedit_CXXFLAGS) $(USE_AUDIO) $(CPPFLAGS) -I. $< -o e_$*.o
 
 x_%.o: %.cpp
-	# Compiling $@
 	$(CXX) $(CXXFLAGS) $(USE_AUDIO) -fpic -fvisibility=hidden \
 	-I. -D LIBRARY $(CPPFLAGS) $< -o x_$*.o
 
 all: $(SPEAK) $(LIBESPEAK) $(STATIC_LIBESPEAK) $(ESPEAK) $(ESPEAKEDIT)
 
-common_SOURCES = compiledict.cpp dictionary.cpp intonation.cpp \
+common_SOURCE = compiledict.cpp dictionary.cpp intonation.cpp \
 	klatt.cpp mbrowrap.cpp numbers.cpp readclause.cpp \
 	phonemelist.cpp setlengths.cpp sonic.cpp \
 	synthdata.cpp synthesize.cpp synth_mbrola.cpp \
 	translate.cpp tr_languages.cpp voices.cpp wavegen.cpp 
 
-speak_SOURCES = speak.cpp $(common_SOURCES)
-speak_OBJS = $(patsubst %.cpp,%.o,$(speak_SOURCES))
+speak_SOURCE = speak.cpp $(common_SOURCE)
+speak_OBJS = ${speak_SOURCE:%.cpp=%.o}
 speak_LIBS = -lstdc++ $(LIB_AUDIO) -lpthread $(EXTRA_LIBS)
 $(SPEAK): $(speak_OBJS)
-	# Linking $@
 	$(CXX) $(LDFLAGS) -o $@ $(speak_OBJS) $(speak_LIBS)
 
-espeak_SOURCES = espeak.cpp
-espeak_OBJS = $(patsubst %.cpp,%.o,$(espeak_SOURCES))
+espeak_SOURCE = espeak.cpp
+espeak_OBJS = ${espeak_SOURCE:%.cpp=%.o}
 espeak_LIBS = -lstdc++ -L . -lespeak
 $(ESPEAK): $(espeak_OBJS) $(LIB_NAME)
-	# Linking $@
 	$(CXX) $(LDFLAGS) -o $@ $(espeak_OBJS) $(espeak_LIBS)
 
-libespeak_SOURCES = speak_lib.cpp $(common_SOURCES) \
+libespeak_SOURCE = speak_lib.cpp $(common_SOURCE) \
 	espeak_command.cpp event.cpp fifo.cpp $(WAVE) debug.cpp
-libespeak_OBJS = $(patsubst %.cpp,x_%.o,$(libespeak_SOURCES))
+libespeak_OBJS = ${libespeak_SOURCE:%.cpp=x_%.o}
 libespeak_LIBS = -lstdc++ $(LIB_AUDIO) -lpthread
 $(LIBESPEAK): $(libespeak_OBJS)
-	# Linking $@
 	$(CXX) $(LDFLAGS) -shared $(SONAME_OPT)$(LIBESPEAK).$(LIB_VERSION) -o $@ \
 	$(libespeak_OBJS) $(libespeak_LIBS)
 	mv $(LIBESPEAK) $(LIBESPEAK).$(LIBTAG)
 	$(LN_SF) $(LIBESPEAK).$(LIB_VERSION) $(LIBESPEAK)
 
 $(STATIC_LIBESPEAK): $(libespeak_OBJS)
-	# Linking $@
 	$(AR) cqs $(STATIC_LIBESPEAK) $(libespeak_OBJS)
 
 
-espeakedit_SOURCES = $(common_SOURCES) compiledata.cpp debug.cpp espeakedit.cpp \
+espeakedit_SOURCE = $(common_SOURCE) compiledata.cpp debug.cpp espeakedit.cpp \
 	event.cpp extras.cpp fifo.cpp formantdlg.cpp \
 	menus.cpp options.cpp prosodydisplay.cpp \
 	espeak_command.cpp speak_lib.cpp spect.cpp \
 	spectdisplay.cpp spectseq.cpp \
 	transldlg.cpp voicedlg.cpp vowelchart.cpp $(WAVE)
-espeakedit_OBJS=$(patsubst %.cpp,e_%.o,$(espeakedit_SOURCES))
+espeakedit_OBJS=${espeakedit_SOURCE:%.cpp=e_%.o}
 espeakedit_WX_LIBS = -pthread   -lwx_gtk2u_xrc-2.6 -lwx_gtk2u_qa-2.6 -lwx_gtk2u_html-2.6 \
 	-lwx_gtk2u_adv-2.6 -lwx_gtk2u_core-2.6 -lwx_baseu_xml-2.6 -lwx_baseu_net-2.6 -lwx_baseu-2.6
 espeakedit_LIBS=-lstdc++ $(LIB_AUDIO)
 	-DGTK_NO_CHECK_CASTS -D__WXGTK__ -D_FILE_OFFSET_BITS=64 \
 	-D_LARGE_FILES -D_LARGEFILE_SOURCE=1 -DNO_GCC_PRAGMA -D_ESPEAKEDIT
 $(ESPEAKEDIT): $(espeakedit_OBJS)
-	# Linking $@
 	$(CXX) $(LDFLAGS) -o $@ $(espeakedit_OBJS) $(espeakedit_LIBS) $(espeakedit_WX_LIBS)
 
 clean:
 	rm -f $(ESPEAKEDIT)
 
 install: all
-	# Create directories
 	rm -rf $(DESTDIR)$(DATADIR)
 	$(MKDIR) $(DESTDIR)$(BINDIR)
 	$(MKDIR) $(DESTDIR)$(LIBDIR)
 	$(MKDIR) $(DESTDIR)$(INCDIR)
 	$(MKDIR) $(DESTDIR)$(DATADIR)
-	# Install espeak executable
 	$(INSTALL) -m 755 $(ESPEAK) $(DESTDIR)$(BINDIR)
-	# Should we install espeakedit executable?
-	# $(INSTALL) -m 755 $(ESPEAKEDIT) $(DESTDIR)$(BINDIR)
-	# Install shared library
 	$(INSTALL) -m 755 $(LIBESPEAK).$(LIBTAG) $(DESTDIR)$(LIBDIR)
-	# Install static library
 	$(INSTALL) -m 755 $(STATIC_LIBESPEAK) $(DESTDIR)$(LIBDIR)
 	$(LN_SF) $(LIBESPEAK).$(LIBTAG) $(DESTDIR)$(LIBDIR)/$(LIBESPEAK).$(LIB_VERSION)
 	$(LN_SF) $(LIBESPEAK).$(LIB_VERSION) $(DESTDIR)$(LIBDIR)/$(LIBESPEAK)
-	# Install development headers
 	$(INSTALL) -pm 644 speak_lib.h $(DESTDIR)$(INCDIR)
-	# Install data files
 	cp -prf ../espeak-data/* $(DESTDIR)$(DATADIR)