why automake fails to generate Makefile.in

Trying to use automake/autoconf (versions 1.10 and 2.61, respectively). Everything is working OK, except automake is not generating Makefile.in.

There are some warnings generated, but I don't think they're significant. However, the last line makes me think it's generating something it shouldn't and stopping there. There is a md5.cc and md5.c file in the project.

xanadu:fsd wwilliam$ automake --add-missing
configure.ac:46: warning: AC_COMPILE_IFELSE was called before AC_USE_SYSTEM_EXTENSIONS
/var/tmp/autoconf/autoconf-15~193/SRC/autoconf/lib/autoconf/specific.m4:421: AC_USE_SYSTEM_EXTENSIONS is expanded from...
/var/tmp/autoconf/autoconf-15~193/SRC/autoconf/lib/autoconf/functions.m4:1677: AC_FUNC_STRNLEN is expanded from...
configure.ac:46: the top level
configure.ac:46: warning: AC_RUN_IFELSE was called before AC_USE_SYSTEM_EXTENSIONS
configure.ac:46: warning: AC_COMPILE_IFELSE was called before AC_GNU_SOURCE
/var/tmp/autoconf/autoconf-15~193/SRC/autoconf/lib/autoconf/specific.m4:340: AC_GNU_SOURCE is expanded from...
configure.ac:46: warning: AC_RUN_IFELSE was called before AC_GNU_SOURCE
configure.ac:46: warning: AC_COMPILE_IFELSE was called before AC_AIX
/var/tmp/autoconf/autoconf-15~193/SRC/autoconf/lib/autoconf/specific.m4:455: AC_AIX is expanded from...
configure.ac:46: warning: AC_RUN_IFELSE was called before AC_AIX
configure.ac:46: warning: AC_COMPILE_IFELSE was called before AC_MINIX
/var/tmp/autoconf/autoconf-15~193/SRC/autoconf/lib/autoconf/specific.m4:474: AC_MINIX is expanded from...
configure.ac:46: warning: AC_RUN_IFELSE was called before AC_MINIX
Makefile.am: object `md5.$(OBJEXT)' created by `md5.cc' and `md5.c'

Relevant contents of configure.ac:

AC_INIT(testapp, 1.1, user@blah.com)
AM_INIT_AUTOMAKE(testapp,1.1)
AC_OUTPUT(Makefile)

Contents of Makefile.am:

AUTOMAKE_OPTIONS = foreign

CFLAGS=-O2
bin_PROGRAMS = testapp
testapp_SOURCES = interface.cc interface.hh keymgr.cc keymgr.hh main.cc manage.cc manage.hh md5.c md5.cc md5.h mm.cc mm.hh mysqldb.cc mysqldb.h testapp.cc testapp.h

I've been googling the issue but haven't found anything helpful.

Commands run were:

autoscan
mv configure.scan configure.ac
(edit configure.ac)
autoconf
(edit Makefile.am)
aclocal
automake --add-missing

Anyone seen anything like this before or know perhaps how I could turn on some additional debugging to troubleshoot the 开发者_如何学JAVAproblem?

Makefile.am: object `md5.$(OBJEXT)' created by `md5.cc' and `md5.c'

is an error message that causes Automake to abort. These two files would have to be compiled to md5.o, so that is a problem.

Can you rename one of these two files?

I have one program that I configure with automake. That program has a script to do the setup, which consists of:

aclocal -I config &&
libtoolize --automake &&
autoheader &&
automake --foreign --add-missing &&
autoconf

The difference, as I see it, is that in this the autoconf step is last, not in the middle.

It complains on line 46, which you do not provide to your question.
Anyhow, to fix this issue you have to add AC_USE_SYSTEM_EXTENSIONS in your configure.ac.

example:

AC_INIT(testapp, 1.1, user@blah.com)
AM_INIT_AUTOMAKE(testapp,1.1)
AC_OUTPUT(Makefile)
AC_USE_SYSTEM_EXTENSIONS
AC_PROG_C
...