dnl
dnl Configure script for bash-2.05
dnl
dnl report bugs to chet@po.cwru.edu
dnl
dnl Process this file with autoconf to produce a configure script.

dnl checks for version info
AC_REVISION([for Bash 2.05, version 2.90, from autoconf version] AC_ACVERSION)dnl

AC_INIT(shell.h)
AC_CONFIG_HEADER(config.h)

dnl make sure we are using a recent autoconf version
AC_PREREQ(2.12)

dnl where to find install.sh, config.sub, and config.guess
AC_CONFIG_AUX_DIR(./support)

dnl canonicalize the host and os so we can do some tricky things before
dnl parsing options
AC_CANONICAL_HOST

dnl configure defaults
opt_bash_malloc=yes
opt_glibc_malloc=no
opt_purify=no
opt_purecov=no
opt_afs=no
opt_curses=no
opt_with_installed_readline=no

#htmldir=

dnl some systems should be configured without the bash malloc by default
dnl and some need a special compiler or loader
dnl look in the NOTES file for more
case "${host_cpu}-${host_os}" in
alpha*-*)	opt_bash_malloc=no ;;	# alpha running osf/1 or linux
*[[Cc]]ray*-*)	opt_bash_malloc=no ;;	# Crays
*-osf1*)	opt_bash_malloc=no ;;	# other osf/1 machines
sparc-svr4*)	opt_bash_malloc=no ;;	# sparc SVR4, SVR4.2
sparc-netbsd*)	opt_bash_malloc=no ;;	# needs 8-byte alignment
mips-irix6*)	opt_bash_malloc=no ;;	# needs 8-byte alignment
m68k-sysv)	opt_bash_malloc=no ;;	# fixes file descriptor leak in closedir
sparc-linux*)	opt_bash_malloc=no ;;	# sparc running linux; requires ELF
#*-freebsd*)	opt_bash_malloc=no ;;	# they claim it's better
*-aix*)		opt_bash_malloc=no ;;	# AIX machines
*-nextstep*)	opt_bash_malloc=no ;;	# NeXT machines running NeXTstep
*-macos*)	opt_bash_malloc=no ;;	# Apple MacOS X
*-rhapsody*)	opt_bash_malloc=no ;;	# Apple Rhapsody (MacOS X)
*-darwin*)	opt_bash_malloc=no ;;	# Apple Darwin (MacOS X)
*-dgux*)	opt_bash_malloc=no ;;	# DG/UX machines
*-qnx*)		opt_bash_malloc=no ;;	# QNX 4.2
*-machten4)	opt_bash_malloc=no ;;	# MachTen 4.x
*-bsdi2.1|*-bsdi3.?)	opt_bash_malloc=no ; : ${CC:=shlicc2} ;; # for loadable builtins
*-beos*)	opt_bash_malloc=no ;;	# they say it's suitable
*-cygwin*)	opt_bash_malloc=no ;;	# Cygnus's CYGWIN environment
*-opennt*|*-interix*)	opt_bash_malloc=no ;;	# Interix, now owned by Microsoft
esac

dnl arguments to configure
dnl packages
AC_ARG_WITH(afs, --with-afs		if you are running AFS, opt_afs=$withval)
AC_ARG_WITH(bash-malloc, --with-bash-malloc	use the Bash version of malloc,opt_bash_malloc=$withval)
AC_ARG_WITH(curses, --with-curses		use the curses library instead of the termcap library,opt_curses=$withval)
AC_ARG_WITH(glibc-malloc, --with-glibc-malloc	use the GNU C library version of malloc,opt_glibc_malloc=$withval)
AC_ARG_WITH(gnu-malloc, --with-gnu-malloc	synonym for --with-bash-malloc,opt_bash_malloc=$withval)
AC_ARG_WITH(installed-readline, --with-installed-readline	use a version of the readline library that is already installed, opt_with_installed_readline=$withval)
AC_ARG_WITH(purecov, --with-purecov		configure to postprocess with pure coverage, opt_purecov=$withval)
AC_ARG_WITH(purify, --with-purify		configure to postprocess with purify, opt_purify=$withval)

dnl test for glibc malloc first because it can override the default
if test "$opt_glibc_malloc" = yes; then 
	MALLOC_TARGET=gmalloc
	MALLOC_SRC=gmalloc.c
elif test "$opt_bash_malloc" = yes; then
	MALLOC_TARGET=malloc
	MALLOC_SRC=malloc.c
	AC_DEFINE(USING_BASH_MALLOC)
else
	MALLOC_TARGET=stubmalloc
	MALLOC_SRC=stub.c
fi

if test "$opt_purify" = yes; then
	PURIFY="purify "
else
	PURIFY=
fi

if test "$opt_purecov" = yes; then
	PURIFY="${PURIFY}purecov"
fi

if test "$opt_afs" = yes; then
	AC_DEFINE(AFS)
fi

if test "$opt_curses" = yes; then
	prefer_curses=yes
fi

dnl optional shell features in config.h.in
opt_minimal_config=no

opt_job_control=yes
opt_alias=yes
opt_readline=yes
opt_history=yes
opt_bang_history=yes
opt_dirstack=yes
opt_restricted=yes
opt_process_subst=yes
opt_prompt_decoding=yes
opt_select=yes
opt_help=yes
opt_array_variables=yes
opt_dparen_arith=yes
opt_extended_glob=yes
opt_brace_expansion=yes
opt_disabled_builtins=no
opt_command_timing=yes
opt_xpg_echo=no
opt_cond_command=yes
opt_arith_for_command=yes
opt_net_redirs=yes
opt_progcomp=yes

dnl options that affect how bash is compiled and linked
opt_static_link=no
opt_profiling=no

dnl argument parsing for optional features
AC_ARG_ENABLE(minimal-config, --enable-minimal-config	a minimal sh-like configuration, opt_minimal_config=$enableval)

dnl a minimal configuration turns everything off, but features can be
dnl added individually
if test $opt_minimal_config = yes; then
	opt_job_control=no opt_alias=no opt_readline=no
	opt_history=no opt_bang_history=no opt_dirstack=no
	opt_restricted=no opt_process_subst=no opt_prompt_decoding=no
	opt_select=no opt_help=no opt_array_variables=no opt_dparen_arith=no
	opt_brace_expansion=no opt_disabled_builtins=no opt_command_timing=no
	opt_extended_glob=no opt_cond_command=no opt_arith_for_command=no
	opt_net_redirs=no opt_progcomp=no
fi

AC_ARG_ENABLE(alias, --enable-alias		enable shell aliases, opt_alias=$enableval)
AC_ARG_ENABLE(arith-for-command, --enable-arith-for-command	enable arithmetic for command, opt_arith_for_command=$enableval)
AC_ARG_ENABLE(array-variables, --enable-array-variables	include shell array variables, opt_array_variables=$enableval)
AC_ARG_ENABLE(bang-history, --enable-bang-history	turn on csh-style history substitution, opt_bang_history=$enableval)
AC_ARG_ENABLE(brace-expansion, --enable-brace-expansion	include brace expansion, opt_brace_expansion=$enableval)
AC_ARG_ENABLE(command-timing, --enable-command-timing	enable the time reserved word and command timing, opt_command_timing=$enableval)
AC_ARG_ENABLE(cond-command, --enable-cond-command	enable the conditional command, opt_cond_command=$enableval)
AC_ARG_ENABLE(directory-stack, --enable-directory-stack	enable builtins pushd/popd/dirs, opt_dirstack=$enableval)
AC_ARG_ENABLE(disabled-builtins, --enable-disabled-builtins	allow disabled builtins to still be invoked, opt_disabled_builtins=$enableval)
AC_ARG_ENABLE(dparen-arithmetic, [--enable-dparen-arithmetic	include ((...)) command], opt_dparen_arith=$enableval)
AC_ARG_ENABLE(extended-glob, --enable-extended-glob	include ksh-style extended pattern matching, opt_extended_glob=$enableval)
AC_ARG_ENABLE(help-builtin, --enable-help-builtin	include the help builtin, opt_help=$enableval)
AC_ARG_ENABLE(history, --enable-history	turn on command history, opt_history=$enableval)
AC_ARG_ENABLE(job-control, --enable-job-control	enable job control features, opt_job_control=$enableval)
AC_ARG_ENABLE(net-redirections, --enable-net-redirections	enable /dev/tcp/host/port redirection, opt_net_redirs=$enableval)
AC_ARG_ENABLE(process-substitution, --enable-process-substitution	enable process substitution, opt_process_subst=$enableval)
AC_ARG_ENABLE(progcomp, --enable-progcomp	enable programmable completion and the complete builtin, opt_progcomp=$enableval)
AC_ARG_ENABLE(prompt-string-decoding, --enable-prompt-string-decoding	turn on escape character decoding in prompts, opt_prompt_decoding=$enableval)
AC_ARG_ENABLE(readline, --enable-readline	turn on command line editing, opt_readline=$enableval)
AC_ARG_ENABLE(restricted, --enable-restricted	enable a restricted shell, opt_restricted=$enableval)
AC_ARG_ENABLE(select, --enable-select		include select command, opt_select=$enableval)
AC_ARG_ENABLE(usg-echo-default, --enable-usg-echo-default	a synonym for --enable-xpg-echo-default, opt_xpg_echo=$enableval)
AC_ARG_ENABLE(xpg-echo-default, --enable-xpg-echo-default	make the echo builtin expand escape sequences by default, opt_xpg_echo=$enableval)

dnl options that alter how bash is compiled and linked
AC_ARG_ENABLE(profiling, --enable-profiling		allow profiling with gprof, opt_profiling=$enableval)
AC_ARG_ENABLE(static-link, --enable-static-link		[link bash statically, for use as a root shell], opt_static_link=$enableval)

dnl opt_job_control is handled later, after BASH_JOB_CONTROL_MISSING runs

dnl opt_readline and opt_history are handled later, because AC_PROG_CC needs
dnl to be run before we can check the version of an already-installed readline
dnl library

if test $opt_alias = yes; then
AC_DEFINE(ALIAS)
fi
if test $opt_dirstack = yes; then
AC_DEFINE(PUSHD_AND_POPD)
fi
if test $opt_restricted = yes; then
AC_DEFINE(RESTRICTED_SHELL)
fi
if test $opt_process_subst = yes; then
AC_DEFINE(PROCESS_SUBSTITUTION)
fi
if test $opt_prompt_decoding = yes; then
AC_DEFINE(PROMPT_STRING_DECODE)
fi
if test $opt_select = yes; then
AC_DEFINE(SELECT_COMMAND)
fi
if test $opt_help = yes; then
AC_DEFINE(HELP_BUILTIN)
fi
if test $opt_array_variables = yes; then
AC_DEFINE(ARRAY_VARS)
fi
if test $opt_dparen_arith = yes; then
AC_DEFINE(DPAREN_ARITHMETIC)
fi
if test $opt_brace_expansion = yes; then
AC_DEFINE(BRACE_EXPANSION)
fi
if test $opt_disabled_builtins = yes; then
AC_DEFINE(DISABLED_BUILTINS)
fi
if test $opt_command_timing = yes; then
AC_DEFINE(COMMAND_TIMING)
fi
if test $opt_xpg_echo = yes ; then
AC_DEFINE(DEFAULT_ECHO_TO_XPG)
fi
if test $opt_extended_glob = yes ; then
AC_DEFINE(EXTENDED_GLOB)
fi
if test $opt_cond_command = yes ; then
AC_DEFINE(COND_COMMAND)
fi
if test $opt_arith_for_command = yes; then
AC_DEFINE(ARITH_FOR_COMMAND)
fi
if test $opt_net_redirs = yes; then
AC_DEFINE(NETWORK_REDIRECTIONS)
fi
if test $opt_progcomp = yes; then
AC_DEFINE(PROGRAMMABLE_COMPLETION)
fi

if test "$opt_minimal_config" = yes; then
	TESTSCRIPT=run-minimal
else
	TESTSCRIPT=run-all
fi

dnl now substitute in the values generated by arguments
AC_SUBST(TESTSCRIPT)
AC_SUBST(PURIFY)
AC_SUBST(MALLOC_TARGET)
AC_SUBST(MALLOC_SRC)

AC_SUBST(htmldir)

dnl Use GNU m4 macros to get the distribution and patchlevel information
dnl into configure without requiring the files to be distributed
[BASHVERS=]dnl
esyscmd(cat _distribution)dnl
[BASHPATCH=]dnl
esyscmd(cat _patchlevel)dnl

echo "Beginning configuration for bash-$BASHVERS for ${host_cpu}-${host_vendor}-${host_os}"

dnl compilation checks
dnl AC_PROG_CC sets $cross_compiling to `yes' if cross-compiling for a
dnl different environment
AC_PROG_CC
BASH_LARGE_FILE_SUPPORT

dnl test for Unix variants
AC_ISC_POSIX
AC_MINIX

dnl test for non-Unix variants
AC_CYGWIN
AC_MINGW32
AC_EXEEXT

dnl BEGIN changes for cross-building for cygwin and BeOS

SIGNAMES_H=lsignames.h

dnl load up the cross-building cache file -- add more cases and cache
dnl files as necessary

dnl Note that host and target machine are the same, and different than the
dnl build machine.
dnl Set SIGNAMES_H based on whether or not we're cross-compiling.

if test "x$cross_compiling" = "xyes"; then
    case "${host}" in
    *-cygwin*)
	cross_cache=${srcdir}/cross-build/cygwin32.cache
	SIGNAMES_H='$(srcdir)/cross-build/win32sig.h'
	;;
    i[[3456]]86-*-beos*)
	cross_cache=${srcdir}/cross-build/x86-beos.cache
	SIGNAMES_H='${srcdir}/cross-build/beos-sig.h'
	;;
    *)	echo "configure: cross-compiling for $host is not supported" >&2
	;;
    esac
    if test -n "${cross_cache}" && test -r "${cross_cache}"; then
	echo "loading cross-build cache file ${cross_cache}"
	. ${cross_cache}
    fi
    unset cross_cache
fi
AC_SUBST(SIGNAMES_H)

if test -z "$CC_FOR_BUILD"; then
    if test "x$cross_compiling" = "xno"; then
	CC_FOR_BUILD='$(CC)'
    else
	CC_FOR_BUILD=gcc
    fi
fi
AC_SUBST(CC_FOR_BUILD)

dnl END changes for cross-building

dnl We want these before the checks, so the checks can modify their values.
test -z "$CFLAGS" && CFLAGS=-g auto_cflags=1

dnl If we're using gcc and the user hasn't specified CFLAGS, add -O2 to CFLAGS.
test -n "$GCC" && test -n "$auto_cflags" && CFLAGS="$CFLAGS -O2"

dnl handle options that alter how bash is compiled and linked
dnl these must come after the test for cc/gcc
if test "$opt_profiling" = "yes"; then
	PROFILE_FLAGS=-pg
	case "$host_os" in
	solaris2*)	;;
	*)		opt_static_link=yes ;;
	esac
fi

if test "$opt_static_link" = yes; then
	# if we're using gcc, add `-static' to LDFLAGS
	if test -n "$GCC" || test "$ac_cv_prog_gcc" = "yes"; then
		STATIC_LD="-static"
		LDFLAGS="$LDFLAGS -static"	# XXX experimental
	fi
fi

AC_SUBST(CFLAGS)
AC_SUBST(CPPFLAGS)
AC_SUBST(LDFLAGS)
AC_SUBST(STATIC_LD)

AC_PROG_GCC_TRADITIONAL

dnl BEGIN READLINE and HISTORY LIBRARY SECTION
dnl prepare to allow bash to be linked against an already-installed readline

dnl first test that the readline version is new enough to link bash against
if test "$opt_readline" = yes && test "$opt_with_installed_readline" = "yes"
then

dnl	we duplicate some work that's done later here so we can look in
dnl	the correct directory for the readline library

	if test -z "$TERMCAP_LIB" ; then
		BASH_CHECK_LIB_TERMCAP
	fi

	test "x$prefix" = xNONE && _rl_prefix=$ac_default_prefix || _rl_prefix=${prefix}
	test "x$exec_prefix" = xNONE && _rl_exec_prefix=${_rl_prefix} || _rl_exec_prefix=${exec_prefix}

	AC_MSG_CHECKING(version of installed readline library)
	_rl_version=`exec_prefix=${_rl_exec_prefix} ${CONFIG_SHELL-/bin/sh} ${srcdir}/support/rlvers.sh -C "${CC}" -L ${libdir} -I ${includedir} -T ${TERMCAP_LIB}`
	AC_MSG_RESULT($_rl_version)

	case "$_rl_version" in
	4.[[2-9]]*|5*|6*|7*|8*|9*)	;;
	*)	opt_with_installed_readline=no 
		AC_MSG_WARN(installed readline library is too old to be linked with bash)
		AC_MSG_WARN(using private bash version)
		;;
	esac
	unset _rl_version _rl_prefix _rl_exec_prefix
fi

if test $opt_readline = yes; then
	AC_DEFINE(READLINE)
	READLINE_LIB=-lreadline
	if test "$opt_with_installed_readline" = "yes" ; then
		RL_LIBDIR='$(libdir)'
		READLINE_DEP=
		RL_INCLUDE='-I$(includedir)'
	else
		RL_LIBDIR='$(dot)/$(LIBSUBDIR)/readline'
		READLINE_DEP='$(READLINE_LIBRARY)'
	fi
else
	RL_LIBDIR='$(dot)/$(LIBSUBDIR)/readline'
	READLINE_LIB= READLINE_DEP=
fi
if test $opt_history = yes || test $opt_bang_history = yes; then
	if test $opt_history = yes; then
		AC_DEFINE(HISTORY)
	fi
	if test $opt_bang_history = yes; then
		AC_DEFINE(BANG_HISTORY)
	fi
	HISTORY_LIB=-lhistory
 	if test "$opt_with_installed_readline" = "yes"; then
		HIST_LIBDIR='$(libdir)'
		HISTORY_DEP=
		RL_INCLUDE='-I$(includedir)'
	else
		HIST_LIBDIR='$(dot)/$(LIBSUBDIR)/readline'
		HISTORY_DEP='$(HISTORY_LIBRARY)'
	fi
else
	HIST_LIBDIR='$(dot)/$(LIBSUBDIR)/readline'
	HISTORY_LIB= HISTORY_DEP=
fi
AC_SUBST(READLINE_LIB)
AC_SUBST(READLINE_DEP)
AC_SUBST(RL_LIBDIR)
AC_SUBST(RL_INCLUDE)
AC_SUBST(HISTORY_LIB)
AC_SUBST(HISTORY_DEP)
AC_SUBST(HIST_LIBDIR)

dnl END READLINE and HISTORY LIBRARY SECTION

dnl programs needed by the build and install process
AC_PROG_INSTALL
AC_CHECK_PROG(AR, ar, ar)
dnl Set default for ARFLAGS, since autoconf does not have a macro for it.
dnl This allows people to set it when running configure or make
test -n "$ARFLAGS" || ARFLAGS="cr"
AC_PROG_RANLIB
AC_PROG_YACC
AC_PROG_MAKE_SET

case "$host_os" in
opennt*|interix*)	MAKE_SHELL="$INTERIX_ROOT/bin/sh" ;;
*)			MAKE_SHELL=/bin/sh ;;
esac
AC_SUBST(MAKE_SHELL)

dnl special checks for libc functions
AC_FUNC_ALLOCA
AC_FUNC_GETPGRP
AC_FUNC_SETVBUF_REVERSED
AC_FUNC_VPRINTF
AC_FUNC_WAIT3
AC_FUNC_STRCOLL

dnl if vprintf is not in libc, see if it's defined in stdio.h
if test "$ac_cv_func_vprintf" = no; then
    AC_MSG_CHECKING(for declaration of vprintf in stdio.h)
    AC_EGREP_HEADER([[int[ 	]*vprintf[^a-zA-Z0-9]]],stdio.h,ac_cv_func_vprintf=yes)
    AC_MSG_RESULT($ac_cv_func_vprintf)
    if test $ac_cv_func_vprintf = yes; then
	AC_DEFINE(HAVE_VPRINTF)
    fi
fi

dnl signal stuff
AC_RETSIGTYPE

dnl checks for certain version-specific system calls and libc functions
AC_CHECK_FUNC(__setostype, AC_DEFINE(HAVE_SETOSTYPE))
AC_CHECK_FUNC(wait3, AC_DEFINE(HAVE_WAIT3))

dnl checks for missing libc functions
AC_CHECK_FUNC(mkfifo,AC_DEFINE(HAVE_MKFIFO),AC_DEFINE(MKFIFO_MISSING))

dnl checks for system calls
AC_CHECK_FUNCS(dup2 select getdtablesize getgroups gethostname \
		setdtablesize getpagesize killpg lstat getpeername sbrk \
		getrlimit getrusage gettimeofday waitpid tcgetpgrp \
		readlink rename)

dnl checks for c library functions
AC_CHECK_FUNCS(bcopy bzero confstr getcwd strcasecmp setenv putenv \
		setlinebuf setlocale strchr strerror strtod strtol \
		strtoul tcgetattr uname sysconf ulimit times tzset \
		siginterrupt memmove ttyname gethostbyname getservbyname \
		inet_aton strpbrk setvbuf pathconf)

dnl checks for locale functions
AC_CHECK_HEADERS(libintl.h)
AC_CHECK_FUNCS(gettext textdomain bindtextdomain)

dnl check for GNU libintl if gettext/textdomain/bindtextdomain
dnl are not found in libc
if test "$ac_cv_func_bindtextdomain" = "no"; then
    AC_CHECK_LIB(intl,bindtextdomain)
    if test "$ac_cv_lib_intl" = "yes"; then
	AC_CHECK_FUNCS(gettext textdomain bindtextdomain)
    fi
fi

dnl checks for the dynamic loading library functions in libc and libdl
if test "$opt_static_link" != yes; then
AC_CHECK_LIB(dl, dlopen)
AC_CHECK_FUNCS(dlopen dlclose dlsym)
fi

dnl this defines SYS_SIGLIST_DECLARED
AC_DECL_SYS_SIGLIST

dnl header files
AC_HEADER_DIRENT
AC_HEADER_TIME

AC_CHECK_HEADERS(unistd.h stdlib.h stdarg.h varargs.h limits.h string.h \
		 memory.h locale.h termcap.h termio.h termios.h dlfcn.h \
		 stddef.h netdb.h)
AC_CHECK_HEADERS(sys/ptem.h sys/pte.h sys/stream.h sys/select.h sys/file.h \
		 sys/resource.h sys/param.h sys/socket.h \
		 sys/time.h sys/times.h sys/wait.h)
AC_CHECK_HEADERS(netinet/in.h arpa/inet.h)

dnl network functions -- check for inet_aton again
if test "$ac_cv_func_inet_aton" != 'yes'; then
BASH_FUNC_INET_ATON
fi

dnl libraries
dnl this is reportedly no longer necessary for irix[56].?
case "$host_os" in
irix4*)	AC_CHECK_LIB(sun, getpwent) ;;
esac

dnl check for getpeername in the socket library only if it's not in libc
if test "$ac_cv_func_getpeername" = no; then
	BASH_CHECK_SOCKLIB
fi
dnl check for gethostbyname in socket libraries if it's not in libc
if test "$ac_cv_func_gethostbyname" = no; then
	BASH_FUNC_GETHOSTBYNAME
fi

dnl system types
AC_TYPE_GETGROUPS
AC_TYPE_OFF_T
AC_TYPE_MODE_T
AC_TYPE_UID_T
AC_TYPE_PID_T
AC_TYPE_SIZE_T
AC_CHECK_TYPE(time_t, long)

AC_TYPE_SIGNAL

AC_CHECK_SIZEOF(char, 1)
AC_CHECK_SIZEOF(short, 2)
AC_CHECK_SIZEOF(int, 4)
AC_CHECK_SIZEOF(long, 4)
AC_CHECK_SIZEOF(char *, 4)
AC_CHECK_SIZEOF(double, 8)

AC_CHECK_TYPE(u_int, unsigned int)
AC_CHECK_TYPE(u_long, unsigned long)

BASH_TYPE_BITS16_T
BASH_TYPE_U_BITS16_T
BASH_TYPE_BITS32_T
BASH_TYPE_U_BITS32_T
BASH_TYPE_BITS64_T

BASH_TYPE_PTRDIFF_T

dnl structures
AC_HEADER_STAT

dnl C compiler characteristics
AC_C_BIGENDIAN

dnl system services
AC_SYS_INTERPRETER
if test $ac_cv_sys_interpreter = yes; then
AC_DEFINE(HAVE_HASH_BANG_EXEC)
fi
dnl we use NO_READ_RESTART_ON_SIGNAL
AC_SYS_RESTARTABLE_SYSCALLS

dnl Miscellaneous Bash tests
if test "$ac_cv_func_lstat" = "no"; then
BASH_FUNC_LSTAT
fi

dnl behavior of system calls and library functions
BASH_DUP2_CLOEXEC_CHECK
BASH_PGRP_SYNC
BASH_SIGNAL_CHECK

if test "$ac_cv_sys_restartable_syscalls" = "no"; then
BASH_SYS_RESTARTABLE_SYSCALLS
fi

dnl checking for the presence of certain library symbols
BASH_SYS_ERRLIST
BASH_SYS_SIGLIST
BASH_UNDER_SYS_SIGLIST

dnl various system types
BASH_TYPE_SIGHANDLER
BASH_CHECK_TYPE(clock_t, [#include <sys/times.h>], long)
BASH_CHECK_TYPE(sigset_t, [#include <signal.h>], int)
BASH_CHECK_TYPE(quad_t, , long, HAVE_QUAD_T)
BASH_RLIMIT_TYPE

dnl presence and contents of structures used by system calls
BASH_STRUCT_TERMIOS_LDISC
BASH_STRUCT_TERMIO_LDISC
BASH_STRUCT_DIRENT_D_INO
BASH_STRUCT_DIRENT_D_FILENO
BASH_STRUCT_WINSIZE
BASH_STRUCT_TIMEVAL

dnl presence and behavior of C library functions
BASH_FUNC_STRSIGNAL
BASH_FUNC_OPENDIR_CHECK
BASH_FUNC_PRINTF
BASH_FUNC_ULIMIT_MAXFDS
BASH_FUNC_GETENV
BASH_FUNC_GETCWD
BASH_FUNC_SBRK_DECLARED
BASH_FUNC_POSIX_SETJMP
BASH_FUNC_STRCOLL

dnl presence and behavior of OS functions
BASH_REINSTALL_SIGHANDLERS
BASH_JOB_CONTROL_MISSING
BASH_SYS_NAMED_PIPES

dnl presence of certain CPP defines
BASH_HAVE_TIOCGWINSZ
BASH_HAVE_TIOCSTAT
BASH_HAVE_FIONREAD

dnl miscellaneous
BASH_MISC_SPEED_T
BASH_CHECK_GETPW_FUNCS
BASH_CHECK_RTSIGS

dnl special checks
case "$host_os" in
hpux*)	BASH_KERNEL_RLIMIT_CHECK ;;
esac

if test "$opt_readline" = yes; then
dnl yuck
case "$host_os" in
aix*)	prefer_curses=yes ;;
esac
BASH_CHECK_LIB_TERMCAP
fi
AC_SUBST(TERMCAP_LIB)
AC_SUBST(TERMCAP_DEP)

BASH_CHECK_DEV_FD
BASH_CHECK_DEV_STDIN
BASH_DEFAULT_MAIL_DIR

if test "$bash_cv_job_control_missing" = missing; then
	opt_job_control=no
fi

if test "$opt_job_control" = yes; then
AC_DEFINE(JOB_CONTROL)
JOBS_O=jobs.o
else
JOBS_O=nojobs.o
fi

AC_SUBST(JOBS_O)

dnl Defines that we want to propagate to the Makefiles in subdirectories,
dnl like glob and readline

LOCAL_DEFS=-DSHELL

dnl use this section to possibly define more cpp variables, specify local
dnl libraries, and specify any additional local cc flags
dnl
dnl this should really go away someday

case "${host_os}" in
sysv4.2*)	AC_DEFINE(SVR4_2)
		AC_DEFINE(SVR4) ;;
sysv4*)		AC_DEFINE(SVR4) ;;
sysv5*)		AC_DEFINE(SVR5) ;;
hpux9*)		LOCAL_CFLAGS="-DHPUX9 -DHPUX" ;;
hpux*)		LOCAL_CFLAGS=-DHPUX ;;
dgux*)		LOCAL_CFLAGS=-D_DGUX_SOURCE; LOCAL_LIBS=-ldgc ;;
isc*)		LOCAL_CFLAGS=-Disc386 ;;
rhapsody*)	LOCAL_CFLAGS=-DRHAPSODY ;;
sco3.2v5*)	LOCAL_CFLAGS="-b elf -DWAITPID_BROKEN -DNO_MEMSCRAMBLE -DPATH_MAX=1024" ;;
sco3.2v4*)	LOCAL_CFLAGS="-DMUST_UNBLOCK_CHLD -DNO_MEMSCRAMBLE -DPATH_MAX=1024" ;;
sco3.2*)	LOCAL_CFLAGS=-DMUST_UNBLOCK_CHLD ;;
sunos4*)	LOCAL_CFLAGS=-DSunOS4 ;;
solaris2.5*)	LOCAL_CFLAGS=-DSunOS5 ;;
lynxos*)	LOCAL_CFLAGS=-DRECYCLES_PIDS ;;
linux*)		LOCAL_LDFLAGS=-rdynamic ;;	 # allow dynamic loading
*qnx*)		LOCAL_CFLAGS="-Dqnx -F -3s" LOCAL_LDFLAGS="-3s -lunix -lncurses" ;;
powerux*)	LOCAL_LIBS="-lgen" ;;
cygwin*)	LOCAL_LIBS="-luser32" ;;
opennt*|interix*) LOCAL_CFLAGS="-DNO_MAIN_ENV_ARG" ;;
esac

dnl Stanza for OS/compiler pair-specific flags
case "${host_os}-${CC}" in
aix4.2*-*gcc*)	LOCAL_LDFLAGS="-Xlinker -bexpall -Xlinker -brtl" ;;
aix4.2*)	LOCAL_LDFLAGS="-bexpall -brtl" ;;
bsdi4*-*gcc*)	LOCAL_LDFLAGS="-rdynamic" ;;	# allow dynamic loading, like Linux
esac

dnl FreeBSD-3.x can have either a.out or ELF
case "${host_os}" in
freebsd[[3-9]]*)
		if test -x /usr/bin/objformat && test "`/usr/bin/objformat`" = "elf" ; then
			LOCAL_LDFLAGS=-rdynamic # allow dynamic loading
		fi ;;
freebsdelf*)	LOCAL_LDFLAGS=-rdynamic ;;	# allow dynamic loading
esac

case "$host_cpu" in
*cray*)		LOCAL_CFLAGS="-DCRAY" ;; # shell var so config.h can use it
esac

case "$host_cpu-$host_os" in
ibmrt-*bsd4*)	LOCAL_CFLAGS="-ma -U__STDC__" ;;
esac

case "$host_cpu-$host_vendor-$host_os" in
m88k-motorola-sysv3)	LOCAL_CFLAGS=-DWAITPID_BROKEN ;;
mips-pyramid-sysv4)	LOCAL_CFLAGS=-Xa ;;
esac

#
# Shared object configuration section.  These values are generated by
# ${srcdir}/support/shobj-conf
#
if test "$ac_cv_func_dlopen" = "yes" && test -f ${srcdir}/support/shobj-conf
then
	AC_MSG_CHECKING(shared object configuration for loadable builtins)
	eval `${CONFIG_SHELL-/bin/sh} ${srcdir}/support/shobj-conf -C "${CC}" -c "${host_cpu}" -o "${host_os}" -v "${host_vendor}"`
	AC_SUBST(SHOBJ_CC)
	AC_SUBST(SHOBJ_CFLAGS)
	AC_SUBST(SHOBJ_LD)
	AC_SUBST(SHOBJ_LDFLAGS)
	AC_SUBST(SHOBJ_XLDFLAGS)
	AC_SUBST(SHOBJ_LIBS)
	AC_SUBST(SHOBJ_STATUS)
	AC_MSG_RESULT($SHOBJ_STATUS)
fi

# try to create a directory tree if the source is elsewhere
# this should be packaged into a script accessible via ${srcdir}/support
case "$srcdir" in
.)	;;
*)	for d in doc tests support lib examples; do	# dirs
		test -d $d || mkdir $d
	done
	for ld in readline glob tilde malloc sh termcap; do	# libdirs
		test -d lib/$ld || mkdir lib/$ld
	done
	test -d examples/loadables || mkdir examples/loadables	# loadable builtins
	test -d examples/loadables/perl || mkdir examples/loadables/perl
	;;
esac

BUILD_DIR=`pwd`

AC_SUBST(PROFILE_FLAGS)

AC_SUBST(incdir)
AC_SUBST(BUILD_DIR)

AC_SUBST(YACC)
AC_SUBST(AR)
AC_SUBST(ARFLAGS)

AC_SUBST(BASHVERS)
AC_SUBST(BASHPATCH)

AC_SUBST(host_cpu)
AC_SUBST(host_vendor)
AC_SUBST(host_os)

AC_SUBST(LOCAL_LIBS)
AC_SUBST(LOCAL_CFLAGS)
AC_SUBST(LOCAL_LDFLAGS)
AC_SUBST(LOCAL_DEFS)

#AC_SUBST(ALLOCA_SOURCE)
#AC_SUBST(ALLOCA_OBJECT)

AC_OUTPUT([Makefile builtins/Makefile lib/readline/Makefile lib/glob/Makefile \
	  lib/malloc/Makefile lib/sh/Makefile lib/termcap/Makefile \
	  lib/tilde/Makefile doc/Makefile support/Makefile \
	  examples/loadables/Makefile examples/loadables/perl/Makefile],
[
# Makefile uses this timestamp file to record whether config.h is up to date.
echo timestamp > stamp-h
])