AC_PREREQ(2.59)
AC_INIT([dbacl],[1.12],[laird@lbreyer.com])
AC_CONFIG_AUX_DIR(config)
AC_CANONICAL_SYSTEM
AC_GNU_SOURCE
AM_INIT_AUTOMAKE([dbacl],[1.12],[laird@lbreyer.com])
AM_CONFIG_HEADER(src/config.h)

## Checks for host information.
AC_AIX
AC_MINIX

AC_SUBST(CFLAGSIEEE,[""])
case $host in
	alpha*-linux*)
		AC_DEFINE([OS_LINUX],[],[this is a Linux system])
		AC_MSG_NOTICE([using -mieee compilation flag to allow divide by zero.])	
		AC_SUBST(CFLAGSIEEE,["-mieee"])
		;;
	*-*-linux*)
		AC_DEFINE([OS_LINUX],[],[this is a Linux system])
		;;
	*-*-sunos*)
		AC_DEFINE([OS_SUN],[],[this is a Sun system])
		;;
	*-*-solaris*)
		AC_DEFINE([OS_SUN],[],[this is a Sun system])
		;;
	*-*-darwin*)
		AC_DEFINE([OS_DARWIN],[],[this is a Mac system])
		;;
	-*-*-*)
		AC_DEFINE([OS_UNKNOWN],[],[this is an unrecognized system])
		;;
esac

AC_DEFINE_UNQUOTED([TARGETCPU],"$target",[identify processor if categories not portable])

## Checks for programs
AC_PROG_CC
AC_PROG_INSTALL
AM_PROG_LEX
AC_PROG_YACC

## Checks for libraries.
AC_CHECK_LIB([m],[log])


AC_SUBST(LDADDINTER,[""])
AC_SUBST(INCLUDESINTER,[""])
# Decide if mailinspect will be interactive
AC_CHECK_LIB([ncurses],[initscr],
[
	AC_CHECK_LIB([readline],[readline],
	[
		AC_CHECK_LIB([slang],[SLsmg_init_smg],
		[
			AC_SUBST(LDADDINTER,["-lslang -lreadline -lncurses"])
			AC_SUBST(INCLUDESINTER,["-I/usr/include/slang"])
			AC_DEFINE([HAVE_LIBNCURSES], [], [ncurses needed for readline])
			AC_DEFINE([HAVE_LIBSLANG], [], [slang needed for interactive mailinspect])
			AC_DEFINE([HAVE_LIBREADLINE], [], [readline needed for interactive mailinspect])
		],[AC_MSG_WARN([libslang missing, disabling interactive mailinspect])])
	],[AC_MSG_WARN([libreadline missing, disabling interactive mailinspect])])
],[AC_MSG_WARN([libncurses missing (needed by readline), disabling interactive mailinspect])])

## Checks for header files.
AC_HEADER_STDC
AC_CHECK_HEADERS([features.h langinfo.h unistd.h sys/mman.h mman.h netinet/in.h])
AC_CHECK_HEADERS([wchar.h wctype.h],,
[
	AC_MSG_WARN([No wide character headers, disabling full internationalization.])
])

## Checks for typedefs, structures, and compiler characteristics.
AC_C_CONST
AC_TYPE_SIZE_T

## Checks for library functions.
AC_FUNC_MBRTOWC
AC_FUNC_MMAP
AC_FUNC_VPRINTF
AC_FUNC_SETVBUF_REVERSED
AC_CHECK_FUNCS([getpagesize madvise sigaction])
## the AX_FUNC_POSIX_MEMALIGN was downloaded from the AC archive, 
## http://ac-archive.sourceforge.net/doc/acinclude.html and added
## to the acinclude.m4 file. After aclocal was run, it got put into aclocal.m4
AX_FUNC_POSIX_MEMALIGN
if test x$ac_cv_func_posix_memalign_works = xno; then
	AC_CHECK_FUNCS([memalign valloc],[break])
fi
AC_CHECK_FUNCS([wcstol],,
[
	AC_MSG_WARN([Incomplete Unicode implementation, some HTML conversions may suffer.])
])


AC_CONFIG_FILES([Makefile doc/Makefile src/Makefile src/tests/Makefile man/Makefile ts/Makefile TREC/Makefile contrib/Makefile doc/chess/Makefile])
AC_OUTPUT