LEX/YACC definitions header

[Alan Larkin]

Before discovering auto* tools last week I had a makefile that contained (amongst other stuff)

 

#--- Makefile

 

LFLAGS = -o$@
YFLAGS = --defines=$(@:.cpp=.hpp) -y

 

OBJECTS = \
 ...
 $(SRC_DIR)/ForrestLexer.o \
 $(SRC_DIR)/ForrestParser.o \
 ...

 

ForrestLexer.c: ForrestLexer.l
ForrestParser.cpp ForrestParser.hpp: ForrestParser.ypp

 

#---

 

It built a dll which linked in a flex/bison parser. ForrestParser.hpp is included in the source files that use the parser. It automatically computes the dependencies which causes ForrestParser.hpp to be generated before its needed. Works a treat.

 

Now Im am having difficulty writing Makefile.am for this project. It currently looks like

 

#--- Makefile.am

 

MAINTAINERCLEANFILES = Makefile.in

 

AM_CPPFLAGS = -I"C:/Program Files/Java/j2sdk1.4.1_01/include" -I"C:/Program Files/Java/j2sdk1.4.1_01/include/win32"

 

AM_YFLAGS = --defines=$(@:.c++=.hpp) -y

 

lib_LTLIBRARIES = libforrest.la
libforrest_la_SOURCES = \
    ...
    ForrestLexer.l \
    ForrestParser.y++ \
    ...
libforrest_la_LDFLAGS = -no-undefined -version-info 0:0:0
libforrest_la_LIBADD = @LEXLIB@ $(top_srcdir)/replace/libreplace.la

 

ForrestParser.hpp: ForrestParser.y++ # ???

 

#---

 

% make
[... normal stuff]
gcc -DHAVE_CONFIG_H -I. -I. -I. "-IC:/Program Files/Java/j2sdk1.4.1_01/include" "-IC:/Program Files/Java/j2sdk1.4.1_01/include/win32" -g -O2 -MT ForrestLexer.lo -MD -MP -MF .deps/ForrestLexer.Tpo -c ForrestLexer.c  -DPIC -o .libs/ForrestLexer.o
ForrestLexer.l:7:29: ForrestParser.hpp: No such file or directory
[... copious quantities of errors from ForrestLexer.c]

 

How do I write my .am so that ForrestParser.hpp is generated? I define AM_PROG_LEX and AC_PROG_YACC in configure.in. Thats all I need there in order to make the parser right?

 

Also, while I have you, whats the correct way to get rid of that hard coded inclusion of the Java include directory?

 

Many thanks.