aclocal.m4

ReactOS是一些高手根据Windows XP的内核编写出的类XP。内核实现机理和API函数调用几乎相同。甚至可以兼容XP的程序。喜欢研究系统内核的人可以看一看。

changequote(<^, ^>)dnl
changequote([, ])dnl
])
dnl
dnl
dnl
AC_DEFUN(wi__RES_DEFDNAME, [
AC_MSG_CHECKING([for useable _res global variable])
AC_TRY_LINK([
	/* includes */
#include <unistd.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <sys/socket.h>
#include <arpa/inet.h>
#include <netinet/in.h>
#ifdef HAVE_ARPA_NAMESER_H
#	include <arpa/nameser.h>
#endif
#ifdef HAVE_RESOLV_H
#	include <resolv.h>
#endif
],[
	/* function-body */
	int len;

	res_init();
	len = (int) strlen(_res.defdname);
],[
	wi_cv__res_defdname=yes
	AC_DEFINE(HAVE__RES_DEFDNAME)
],[
	wi_cv__res_defdname=no
])
AC_MSG_RESULT($wi_cv__res_defdname)
])
dnl
dnl
dnl
dnl
AC_DEFUN(wi_TYPE_SIG_ATOMIC_T, [
AC_MSG_CHECKING([for sig_atomic_t])
AC_TRY_LINK([
	/* includes */
#ifdef HAVE_UNISTD_H
#include <unistd.h>
#endif
#include <sys/types.h>
#include <sys/signal.h>
#include <signal.h>	/* MG: for IRIX */
#if STDC_HEADERS
#include <stdlib.h>
#include <stddef.h>
#endif
],[
	/* function-body */
	sig_atomic_t sample;

	sample = (sig_atomic_t) getpid();	/* bogus code, of course */
	exit((sample > 0) ? 0 : 1);
],[
	ac_cv_type_sig_atomic_t=yes
],[
	ac_cv_type_sig_atomic_t=no
])
AC_MSG_RESULT($ac_cv_type_sig_atomic_t)
if test $ac_cv_type_sig_atomic_t = no ; then
	AC_DEFINE(sig_atomic_t, int)
fi
])
dnl
dnl
dnl
dnl
AC_DEFUN(wi_LIB_READLINE, [
AC_MSG_CHECKING([for GNU Readline library, version 2.0 or newer])

wi_cv_lib_readline=no
wi_cv_lib_readline_result=no
ac_save_LIBS="$LIBS"
# Note: $LIBCURSES is permitted to be empty.
for LIBREADLINE in "-lreadline" "-lreadline $LIBCURSES" "-lreadline -ltermcap" "-lreadline -lncurses" "-lreadline -lcurses"
do
	LIBS="$ac_save_LIBS $LIBREADLINE"
	AC_TRY_RUN([
	/* program */
#include <stdio.h>
#include <stdlib.h>
 
main(int argc, char **argv)
{
	/* Note:  don't actually call readline, since it may block;
	 * We just want to see if it (dynamic) linked in okay.
	 */
	if (argc == 0)	/* never true */
		readline(0);
	exit(0);
}
],[
	# action if true
	wi_cv_lib_readline=yes
],[
	# action if false
	wi_cv_lib_readline=no
],[
	# action if cross compiling
	wi_cv_lib_readline=no
])

	if test "$wi_cv_lib_readline" = yes ; then break ; fi
done

# Now try it again, to be sure it is recent enough.
# rl_function_of_keyseq appeared in version 2.0
#
dnl AC_CHECK_FUNC(rl_function_of_keyseq, [wi_cv_lib_readline=yes],[
dnl 	wi_cv_lib_readline=no;wi_cv_lib_readline_result="no (it is present but too old to use)"
dnl ])
	AC_TRY_LINK([
		/* includes */
	],[
		/* function-body */
		readline(0);
		rl_function_of_keyseq(0);
	],[
		wi_cv_lib_readline=yes
	],[
		wi_cv_lib_readline=no
		wi_cv_lib_readline_result="no (it is present but too old to use)"
	])

if test "$wi_cv_lib_readline" = no ; then
	LIBREADLINE=""
	# restore LIBS
	LIBS="$ac_save_LIBS"
else
	/bin/rm -f readline.ver
	touch readline.ver

	AC_TRY_RUN([
	/* program */
#include <unistd.h>
#include <sys/types.h>
#include <stdio.h>

extern char *rl_library_version;

main()
{
	FILE *fp;
	double d;

	sscanf(rl_library_version, "%lf", &d);
	fp = fopen("readline.ver", "w");
	if (fp == NULL) exit(1);
	if (fprintf(fp, "%s\n", rl_library_version) < 0) exit(1);
	if (fprintf(fp, "%03d\n", (int) (d * 100.0)) < 0) exit(1);
	if (fclose(fp) < 0) exit(1);
	exit(0);
}
	],[
		# action if true
		rl_library_version=`sed -n 1,1p readline.ver 2>/dev/null`
		rlver=`sed -n 2,2p readline.ver 2>/dev/null`
		/bin/rm -f readline.ver
	],[
		# action if false
		rl_library_version=''
		rlver=''
		/bin/rm -f readline.ver
	],[
		# action if cross compiling
		rl_library_version=''
		rlver=''
		/bin/rm -f readline.ver
	])

	case "$rlver" in
		???)
			wi_cv_lib_readline_result="yes, installed version is $rl_library_version"
			;;
		*)
			# Test using current LIBS.
			AC_TRY_LINK([
				/* includes */
				extern int rl_completion_append_character;
			],[
				/* function-body */
				readline(0);
				rl_completion_append_character = 0;
			],[
				rlver="210"
			],[
				rlver="200"
			])

			if test "$rlver" = "210" ; then
				wi_cv_lib_readline_result="yes, version 2.1 or higher"
			else
				wi_cv_lib_readline_result="yes, version 2.0"
			fi
			;;
	esac

	wi_cv_lib_readline=yes
	# restore LIBS
	LIBS="$ac_save_LIBS"
fi
AC_MSG_RESULT($wi_cv_lib_readline_result)
AC_SUBST(LIBREADLINE)

if test "$wi_cv_lib_readline" = yes ; then
	# Now verify that all the headers are installed.
	#
	AC_REQUIRE_CPP()
	unset ac_cv_header_readline_chardefs_h
	unset ac_cv_header_readline_history_h
	unset ac_cv_header_readline_keymaps_h
	unset ac_cv_header_readline_readline_h
	unset ac_cv_header_readline_tilde_h
	AC_CHECK_HEADERS([readline/chardefs.h readline/history.h readline/keymaps.h readline/readline.h readline/tilde.h])

	for xxwi in \
		"$ac_cv_header_readline_chardefs_h" \
		"$ac_cv_header_readline_history_h" \
		"$ac_cv_header_readline_keymaps_h" \
		"$ac_cv_header_readline_readline_h" \
		"$ac_cv_header_readline_tilde_h" 
	do
		if test "$xxwi" = no ; then
			break
		fi
	done

	if test "$xxwi" = no ; then
		AC_MSG_WARN([GNU Readline headers are not installed or could not be found -- GNU Readline will not be used.])
		wi_cv_lib_readline=no
		wi_cv_lib_readline_result="no (headers not installed)"
	else
		AC_DEFINE_UNQUOTED(HAVE_LIBREADLINE, $rlver)
	fi
fi
])
dnl
dnl
dnl
AC_DEFUN(wi_USE_LONG_LONG, [
AC_MSG_CHECKING([for 64-bit integral type: long long])
LONGEST_INT="long"
AC_TRY_RUN([
	/* program */
#include <unistd.h>
#include <sys/types.h>
#include <stdio.h>

long long hugeNumvar = 1;

main()
{
	long long hugeNumtoo = 2;

	if (hugeNumtoo > hugeNumvar)
		hugeNumvar++;
	if (sizeof(hugeNumvar) < 8)
		exit(1);
	exit(0);
}

],[
	# action if true
	wi_cv_type_long_long=yes
	LONGEST_INT="long long"
],[
	# action if false
  	wi_cv_type_long_long=no
],[
	# action if cross compiling
	wi_cv_type_long_long=no
])
AC_MSG_RESULT($wi_cv_type_long_long)

if test "$wi_cv_type_long_long" = yes ; then
	
AC_MSG_CHECKING([how to print a 64-bit integral type])
wi_cv_printf_long_long=fail

AC_TRY_RUN([
	/* program */
#include <unistd.h>
#include <sys/types.h>
#include <stdio.h>
#include <string.h>
#include <stdlib.h>

main()
{
	char s[80];
	long long hugeNum;

	hugeNum = (long long) 1000000000;
	hugeNum = hugeNum * (long long) 99;
	hugeNum = hugeNum + (long long) 1;

	(void) sprintf(s, "%lld", hugeNum);
	exit((strcmp(s, "99000000001") == 0) ? 0 : 1);
}
],[
	# action if true
	wi_cv_printf_long_long="%lld"
],[
	# action if false
	:
],[
	# action if cross compiling
	:
])


if test "$wi_cv_printf_long_long" = fail ; then

AC_TRY_RUN([
	/* program */
#include <unistd.h>
#include <sys/types.h>
#include <stdio.h>
#include <string.h>
#include <stdlib.h>

main()
{
	char s[80];
	long long hugeNum;

	hugeNum = (long long) 1000000000;
	hugeNum = hugeNum * (long long) 99;
	hugeNum = hugeNum + (long long) 1;

	(void) sprintf(s, "%qd", hugeNum);
	exit((strcmp(s, "99000000001") == 0) ? 0 : 1);
}
],[
	# action if true
	wi_cv_printf_long_long="%qd"
],[
	# action if false
	:
],[
	# action if cross compiling
	:
])
fi

if test "$wi_cv_printf_long_long" = fail ; then
	wi_cv_printf_long_long_msg_result='cannot print'
else
	wi_cv_printf_long_long_msg_result="$wi_cv_printf_long_long"
fi

AC_MSG_RESULT($wi_cv_printf_long_long_msg_result)

	
AC_MSG_CHECKING([how to scan a 64-bit integral type])
wi_cv_scanf_long_long=fail

AC_TRY_RUN([
	/* program */
#include <unistd.h>
#include <sys/types.h>
#include <stdio.h>
#include <string.h>
#include <stdlib.h>

main()
{
	long long hugeNum, justAsHugeNum;

	hugeNum = (long long) 1000000000;
	hugeNum = hugeNum * (long long) 99;
	hugeNum = hugeNum + (long long) 1;

	justAsHugeNum = (long long) 0;
	--justAsHugeNum;
	sscanf("99000000001", "%lld", &justAsHugeNum);
	if (memcmp(&hugeNum, &justAsHugeNum, sizeof(hugeNum)) == 0)
		exit(0);
	exit(1);
}
],[
	# action if true
	wi_cv_scanf_long_long="%lld"
],[
	# action if false
	:
],[
	# action if cross compiling
	:
])


if test "$wi_cv_scanf_long_long" = fail ; then

AC_TRY_RUN([
	/* program */
#include <unistd.h>
#include <sys/types.h>
#include <stdio.h>
#include <string.h>
#include <stdlib.h>

main()
{
	long long hugeNum, justAsHugeNum;

	hugeNum = (long long) 1000000000;
	hugeNum = hugeNum * (long long) 99;
	hugeNum = hugeNum + (long long) 1;

	justAsHugeNum = (long long) 0;
	--justAsHugeNum;
	sscanf("99000000001", "%qd", &justAsHugeNum);
	if (memcmp(&hugeNum, &justAsHugeNum, sizeof(hugeNum)) == 0)
		exit(0);
	exit(1);
}
],[
	# action if true
	wi_cv_scanf_long_long="%qd"
],[
	# action if false
	:
],[
	# action if cross compiling
	:
])
fi

if test "$wi_cv_scanf_long_long" = fail ; then
	wi_cv_scanf_long_long_msg_result='cannot scan'
else
	wi_cv_scanf_long_long_msg_result="$wi_cv_scanf_long_long"
fi

AC_MSG_RESULT($wi_cv_scanf_long_long_msg_result)

fi

AC_MSG_CHECKING([if everything was available to use the 64-bit integral type])

if test "$wi_cv_type_long_long" = no ; then
	wi_cv_use_long_long_msg_result="no (long long type not available)"
	wi_cv_use_long_long="no"
	wi_cv_scanf_long_long="fail"
	wi_cv_prihtf_long_long="fail"
	LONGEST_INT="long"
elif test "$wi_cv_printf_long_long" = fail ; then
	wi_cv_use_long_long_msg_result="no (libc printf() does not support them)"
	wi_cv_use_long_long="no"
	wi_cv_scanf_long_long="fail"
	wi_cv_prihtf_long_long="fail"
	LONGEST_INT="long"
elif test "$wi_cv_scanf_long_long" = fail ; then
	wi_cv_use_long_long_msg_result="no (libc scanf() does not support them)"
	wi_cv_use_long_long="no"
	wi_cv_scanf_long_long="fail"
	wi_cv_prihtf_long_long="fail"
	LONGEST_INT="long"
else
	AC_DEFINE(HAVE_LONG_LONG)
	if test "$wi_cv_printf_long_long$wi_cv_scanf_long_long" = "%lld%qd" ; then
		# FreeBSD 3.2 has %lld and %qd, but we want to
		# run on 3.1 and 3.0.
		#
		wi_cv_printf_long_long="%qd"
	fi
	AC_DEFINE_UNQUOTED(PRINTF_LONG_LONG, "$wi_cv_printf_long_long")
	AC_DEFINE_UNQUOTED(SCANF_LONG_LONG , "$wi_cv_scanf_long_long")
	if test "$wi_cv_printf_long_long" = "%qd" ; then
		AC_DEFINE(PRINTF_LONG_LONG_QD)
	else
		AC_DEFINE(PRINTF_LONG_LONG_LLD)
	fi
	if test "$wi_cv_scanf_long_long" = "%qd" ; then
		AC_DEFINE(SCANF_LONG_LONG_QD)
	else
		AC_DEFINE(SCANF_LONG_LONG_LLD)
	fi
	wi_cv_use_long_long="yes"
	wi_cv_use_long_long_msg_result="yes"
fi
AC_MSG_RESULT($wi_cv_use_long_long_msg_result)
])
dnl
dnl
dnl
dnl
AC_DEFUN(wi_CREATE_TAR_FILES, [
AC_MSG_CHECKING([how to create TAR files])
changequote(<<, >>)dnl
TAR=/usr/bin/tar
if [ ! -f /usr/bin/tar ] && [ -f /bin/tar ] ; then
	TAR=/bin/tar
fi
x=""
if [ -x /usr/bin/what ] ; then
	x=`/usr/bin/what "$TAR" 2>&1 | sed -n 's/.*pax.*/pax/g;/pax/p'`
elif [ -x /bin/what ] ; then
	x=`/bin/what "$TAR" 2>&1 | sed -n 's/.*pax.*/pax/g;/pax/p'`
fi
if [ "x$x" != "xpax" ] ; then
	# The junk above is because Mac OS X Server's tar freaks out
	# and does not exit if you do "tar --help".
	#
	x=`$TAR --help 2>&1 | sed -n 's/.*owner=NAME.*/owner=NAME/g;/owner=NAME/p'`
fi
case "$x" in
	*owner=NAME*)
		TARFLAGS="-c --owner=root --group=bin --verbose -f"
		;;
	*)
		TARFLAGS="cvf"
		x2=`gtar --help 2>&1 | sed -n 's/.*owner=NAME.*/owner=NAME/g;/owner=NAME/p'`
		case "$x2" in
			*owner=NAME*)
				TARFLAGS="-c --owner=root --group=bin --verbose -f"
				TAR=gtar
				;;
		esac
		;;
esac
changequote([, ])dnl
AC_SUBST(TARFLAGS)
AC_SUBST(TAR)
AC_MSG_RESULT([$TAR $TARFLAGS])
])
dnl
dnl
dnl
dnl
AC_DEFUN(wi_HEADER_CURSES, [
AC_MSG_CHECKING([for curses library headers])
if test "$nc_cv_ncurses" != "no" ; then
	AC_CHECK_HEADERS(ncurses.h curses.h)
else
	AC_CHECK_HEADERS(curses.h)
fi
dnl needed for Solaris 7
if test "$ac_cv_header_curses_h" = no ; then
	if test -f /usr/include/curses.h ; then
		AC_DEFINE(HAVE_CURSES_H)
		ac_cv_header_curses_h=yes
	fi
fi
])
dnl
dnl
dnl
dnl
AC_DEFUN(wi_LIB_CURSES, [
wi_HEADER_CURSES
AC_MSG_CHECKING([for curses library])

wi_cv_lib_curses=no
wi_cv_lib_curses_result=no
ac_save_LIBS="$LIBS"
for LIBCURSES in "-lncurses" "-lcurses" "-lcurses -ltermcap" "-ltermcap -lcurses"
do
	if test "x$LIBCURSES-$nc_cv_ncurses" = "x-lncurses-no" ; then
		# This should never work
		LIBCURSES="-lkdfjkdjfs"
	fi
	LIBS="$ac_save_LIBS $LIBCURSES"
	AC_TRY_RUN([
	/* program */
#include <stdio.h>
#include <stdlib.h>

#ifdef HAVE_NCURSES_H
#	include <ncurses.h>
#else
#	include <curses.h>
#endif

 
main(int argc, char **argv)
{
	/* Note:  don't actually call curses, since it may block;
	 * We just want to see if it (dynamic) linked in okay.
	 */
	if (argc == 4)
		initscr();
	exit(0);
}
],[
	# action if true
	wi_cv_lib_curses=yes
	wi_cv_lib_curses_result="yes"
],[
	# action if false