Re: Adding a new code

[Ian Lance Taylor <ian at airs dot com>]

Vibhav Garg <vibhtech@yahoo.com> writes:

> I am trying to do some data-flow analysis for a
> project for which I am adding a new pass to the
> optimization code.
> 
> I have modified the Makefiles to properly compile the
> code, and it is able to create the object files
> correctly, but fails at this point
> 
> ranlib  libbackend.a
> gcc   -g -DENABLE_CHECKING -DENABLE_ASSERT_CHECKING
> -DIN_GCC   -W -Wall -Wwrite-
> strings -Wstrict-prototypes -Wmissing-prototypes
> -Wold-style-definition    -DHAV
> E_CONFIG_H  -o cc1.exe \
>         c-parse.o c-lang.o stub-objc.o attribs.o
> c-errors.o c-lex.o c-pragma.o c
> -decl.o c-typeck.o c-convert.o c-aux-info.o c-common.o
> c-opts.o c-format.o c-sem
> antics.o c-incpath.o cppdefault.o c-ppoutput.o
> c-cppbuiltin.o prefix.o c-objc-co
> mmon.o c-dump.o c-pch.o cygwin2.o c-gimplify.o
> tree-mudflap.o c-pretty-print.o m
> ain.o  libbackend.a ../libcpp/libcpp.a
> ../libcpp/libcpp.a -lintl -liconv ../libi
> berty/libiberty.a
> libbackend.a(tree-optimize.o): In function
> `init_tree_optimization_passes':
> /cygdrive/c/gcc-4.0.2/gcc/tree-optimize.c:337:
> undefined reference to `_pass_dfa
> 
> Can anyone tell me what the problem might be and how
> to fix it?

There is no _pass_dfa in the normal gcc sources.  I conclude that the
problem is due to your patch.

Did you add your new .o files to OBJS-common in Makefile.in?

Ian