323 lines
9.5 KiB
Plaintext
323 lines
9.5 KiB
Plaintext
dnl Process this file with autoconf to produce a configure script.
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AC_INIT(forwback.c)
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AC_CONFIG_HEADER(defines.h)
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dnl Checks for programs.
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AC_PROG_CC
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AC_ISC_POSIX
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AC_PROG_GCC_TRADITIONAL
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AC_PROG_INSTALL
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dnl Check for compilation model.
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dnl AC_SYS_LARGEFILE is not supported in all versions of autoconf.
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dnl Remove the dnl comment on the next line to use large (64 bit) files.
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dnl AC_SYS_LARGEFILE
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dnl Checks for libraries.
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AC_CHECK_LIB(xcurses, initscr, [have_xcurses=yes], [have_xcurses=no])
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AC_CHECK_LIB(ncurses, initscr, [have_ncurses=yes], [have_ncurses=no])
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AC_CHECK_LIB(curses, initscr, [have_curses=yes], [have_curses=no])
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AC_CHECK_LIB(termcap, tgetent, [have_termcap=yes], [have_termcap=no])
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AC_CHECK_LIB(termlib, tgetent, [have_termlib=yes], [have_termlib=no])
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dnl Regular expressions (regcmp) are in -lgen on Solaris 2,
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dnl and in -lintl on SCO Unix.
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AC_CHECK_LIB(gen, regcmp)
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AC_CHECK_LIB(intl, regcmp)
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AC_CHECK_LIB(PW, regcmp)
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dnl Checks for terminal libraries
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AC_MSG_CHECKING(for working terminal libraries)
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TERMLIBS=
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dnl Check for systems where curses is broken.
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curses_broken=0
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if test x`uname -s` = "xHP-UX" >/dev/null 2>&1; then
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if test x`uname -r` = "xB.11.00" >/dev/null 2>&1; then
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curses_broken=1
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fi
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if test x`uname -r` = "xB.11.11" >/dev/null 2>&1; then
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curses_broken=1
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fi
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fi
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if test $curses_broken = 0; then
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dnl -- Try xcurses.
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if test "x$TERMLIBS" = x; then
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if test $have_xcurses = yes; then
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TERMLIBS="-lxcurses"
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SAVE_LIBS=$LIBS
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LIBS="$LIBS $TERMLIBS"
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AC_TRY_LINK(, [tgetent(0,0); tgetflag(0); tgetnum(0); tgetstr(0,0);],
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[termok=yes], [termok=no])
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LIBS=$SAVE_LIBS
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if test $termok = no; then TERMLIBS=""; fi
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fi
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fi
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dnl -- Try ncurses.
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if test "x$TERMLIBS" = x; then
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if test $have_ncurses = yes; then
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TERMLIBS="-lncurses"
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SAVE_LIBS=$LIBS
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LIBS="$LIBS $TERMLIBS"
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AC_TRY_LINK(, [tgetent(0,0); tgetflag(0); tgetnum(0); tgetstr(0,0);],
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[termok=yes], [termok=no])
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LIBS=$SAVE_LIBS
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if test $termok = no; then TERMLIBS=""; fi
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fi
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fi
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dnl -- Try curses.
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if test "x$TERMLIBS" = x; then
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if test $have_curses = yes; then
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TERMLIBS="-lcurses"
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SAVE_LIBS=$LIBS
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LIBS="$LIBS $TERMLIBS"
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AC_TRY_LINK(, [tgetent(0,0); tgetflag(0); tgetnum(0); tgetstr(0,0);],
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[termok=yes], [termok=no])
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LIBS=$SAVE_LIBS
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if test $termok = no; then TERMLIBS=""; fi
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fi
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fi
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dnl -- Try curses & termcap.
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if test "x$TERMLIBS" = x; then
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if test $have_curses = yes; then
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if test $have_termcap = yes; then
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TERMLIBS="-lcurses -ltermcap"
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SAVE_LIBS=$LIBS
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LIBS="$LIBS $TERMLIBS"
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AC_TRY_LINK(, [tgetent(0,0); tgetflag(0); tgetnum(0); tgetstr(0,0);],
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[termok=yes], [termok=no])
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LIBS=$SAVE_LIBS
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if test $termok = no; then TERMLIBS=""; fi
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fi
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fi
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fi
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fi
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dnl -- Try termcap.
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if test "x$TERMLIBS" = x; then
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if test $have_termcap = yes; then
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TERMLIBS="-ltermcap"
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SAVE_LIBS=$LIBS
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LIBS="$LIBS $TERMLIBS"
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AC_TRY_LINK(, [tgetent(0,0); tgetflag(0); tgetnum(0); tgetstr(0,0);],
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[termok=yes], [termok=no])
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LIBS=$SAVE_LIBS
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if test $termok = no; then TERMLIBS=""; fi
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fi
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fi
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dnl -- Try termlib.
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if test "x$TERMLIBS" = x; then
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if test $have_termlib = yes; then
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TERMLIBS="-lcurses -ltermlib"
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SAVE_LIBS=$LIBS
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LIBS="$LIBS $TERMLIBS"
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AC_TRY_LINK(, [tgetent(0,0); tgetflag(0); tgetnum(0); tgetstr(0,0);],
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[termok=yes], [termok=no])
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LIBS=$SAVE_LIBS
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if test $termok = no; then TERMLIBS=""; fi
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fi
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fi
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if test "x$TERMLIBS" = x; then
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AC_MSG_RESULT(Cannot find terminal libraries - configure failed)
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exit 1
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fi
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AC_MSG_RESULT(using $TERMLIBS)
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LIBS="$LIBS $TERMLIBS"
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dnl Checks for header files.
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AC_CHECK_HEADERS(ctype.h errno.h fcntl.h limits.h stdio.h stdlib.h string.h termcap.h termio.h termios.h time.h unistd.h values.h sys/ioctl.h sys/stream.h sys/ptem.h)
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dnl Checks for identifiers.
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AC_TYPE_OFF_T
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AC_MSG_CHECKING(for void)
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AC_TRY_COMPILE(, [void *foo = 0;],
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[AC_MSG_RESULT(yes); AC_DEFINE(HAVE_VOID)], [AC_MSG_RESULT(no)])
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AC_MSG_CHECKING(for const)
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AC_TRY_COMPILE(, [const int foo = 0;],
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[AC_MSG_RESULT(yes); AC_DEFINE(HAVE_CONST)], [AC_MSG_RESULT(no)])
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AC_MSG_CHECKING(for time_t)
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AC_TRY_COMPILE([#include <time.h>], [time_t t = 0;],
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[AC_MSG_RESULT(yes); AC_DEFINE(HAVE_TIME_T)], [AC_MSG_RESULT(no)])
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dnl Checks for functions and external variables.
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AC_TYPE_SIGNAL
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AC_CHECK_FUNCS(fsync memcpy popen _setjmp sigprocmask sigsetmask stat strchr strstr system)
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dnl Some systems have termios.h but not the corresponding functions.
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AC_CHECK_FUNC(tcgetattr, AC_DEFINE(HAVE_TERMIOS_FUNCS))
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AC_MSG_CHECKING(for fileno)
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AC_TRY_LINK([
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#if HAVE_STDIO_H
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#include <stdio.h>
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#endif], [static int x; x = fileno(stdin);],
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[AC_MSG_RESULT(yes); AC_DEFINE(HAVE_FILENO)], [AC_MSG_RESULT(no)])
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AC_MSG_CHECKING(for strerror)
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AC_TRY_LINK([
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#if HAVE_STDIO_H
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#include <stdio.h>
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#endif
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#if HAVE_STRING_H
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#include <string.h>
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#endif
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#if HAVE_ERRNO_H
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#include <errno.h>
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#endif], [static char *x; x = strerror(0);],
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[AC_MSG_RESULT(yes); AC_DEFINE(HAVE_STRERROR)], [AC_MSG_RESULT(no)])
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AC_MSG_CHECKING(for sys_errlist)
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AC_TRY_LINK(, [extern char *sys_errlist[]; static char **x; x = sys_errlist;],
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[AC_MSG_RESULT(yes); AC_DEFINE(HAVE_SYS_ERRLIST)], [AC_MSG_RESULT(no)])
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AC_MSG_CHECKING(for sigset_t)
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AC_TRY_LINK([
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#include <signal.h>
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], [sigset_t s; s = 0;],
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[AC_MSG_RESULT(yes); AC_DEFINE(HAVE_SIGSET_T)], [AC_MSG_RESULT(no)])
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AC_MSG_CHECKING(for sigemptyset)
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AC_TRY_LINK([
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#include <signal.h>
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], [sigset_t s; sigemptyset(&s);],
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[AC_MSG_RESULT(yes); AC_DEFINE(HAVE_SIGEMPTYSET)], [AC_MSG_RESULT(no)])
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have_errno=no
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AC_MSG_CHECKING(for errno)
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AC_TRY_LINK([
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#if HAVE_ERRNO_H
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#include <errno.h>
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#endif], [static int x; x = errno;],
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[AC_MSG_RESULT(yes - in errno.h); AC_DEFINE(HAVE_ERRNO) have_errno=yes])
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if test $have_errno = no; then
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AC_TRY_LINK([
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#if HAVE_ERRNO_H
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#include <errno.h>
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#endif], [extern int errno; static int x; x = errno;],
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[AC_MSG_RESULT(yes - must define); AC_DEFINE(HAVE_ERRNO) AC_DEFINE(MUST_DEFINE_ERRNO)],
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[AC_MSG_RESULT(no)])
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fi
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AC_MSG_CHECKING(for locale)
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AC_TRY_LINK([#include <locale.h>
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#include <ctype.h>], [setlocale(LC_CTYPE,""); isprint(0); iscntrl(0);],
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[AC_MSG_RESULT(yes); AC_DEFINE(HAVE_LOCALE)], [AC_MSG_RESULT(no)])
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AC_MSG_CHECKING(for ctype functions)
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AC_TRY_LINK([
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#if HAVE_CTYPE_H
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#include <ctype.h>
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#endif], [static int x; x = isupper(x); x = tolower(x); x = toupper(x);],
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[AC_MSG_RESULT(yes); AC_DEFINE(HAVE_UPPER_LOWER)], [AC_MSG_RESULT(no)])
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dnl Checks for external variable ospeed in the termcap library.
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have_ospeed=no
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AC_MSG_CHECKING(termcap for ospeed)
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AC_TRY_LINK([
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#include <sys/types.h>
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#if HAVE_TERMIOS_H
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#include <termios.h>
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#endif
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#if HAVE_TERMCAP_H
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#include <termcap.h>
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#endif], [ospeed = 0;],
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[AC_MSG_RESULT(yes - in termcap.h); AC_DEFINE(HAVE_OSPEED) have_ospeed=yes])
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if test $have_ospeed = no; then
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AC_TRY_LINK(, [extern short ospeed; ospeed = 0;],
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[AC_MSG_RESULT(yes - must define); AC_DEFINE(HAVE_OSPEED) AC_DEFINE(MUST_DEFINE_OSPEED)],
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[AC_MSG_RESULT(no)])
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fi
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dnl Checks for regular expression functions.
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have_regex=no
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have_posix_regex=unknown
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AC_MSG_CHECKING(for regcomp)
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WANT_REGEX=auto
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AC_ARG_WITH(regex,
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[ --with-regex={auto,pcre,posix,regcmp,re_comp,regcomp,regcomp-local} Select a regular expression library [auto]],
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WANT_REGEX="$withval")
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if test $have_regex = no; then
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if test $WANT_REGEX = auto -o $WANT_REGEX = posix; then
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dnl Some versions of Solaris have a regcomp() function, but it doesn't work!
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dnl So we run a test program. If we're cross-compiling, do it the old way.
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AC_TRY_RUN([
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#include <sys/types.h>
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#include <regex.h>
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main() { regex_t r; regmatch_t rm; char *text = "xabcy";
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if (regcomp(&r, "abc", 0)) exit(1);
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if (regexec(&r, text, 1, &rm, 0)) exit(1);
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#ifndef __WATCOMC__
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if (rm.rm_so != 1) exit(1); /* check for correct offset */
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#else
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if (rm.rm_sp != text + 1) exit(1); /* check for correct offset */
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#endif
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exit(0); }],
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have_posix_regex=yes, have_posix_regex=no, have_posix_regex=unknown)
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if test $have_posix_regex = yes; then
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AC_MSG_RESULT(using POSIX regcomp)
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AC_DEFINE(HAVE_POSIX_REGCOMP)
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have_regex=yes
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elif test $have_posix_regex = unknown; then
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AC_TRY_LINK([
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#include <sys/types.h>
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#include <regex.h>],
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[regex_t *r; regfree(r);],
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AC_MSG_RESULT(using POSIX regcomp)
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AC_DEFINE(HAVE_POSIX_REGCOMP) have_regex=yes)
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else
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AC_MSG_RESULT(no)
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fi
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fi
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fi
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if test $have_regex = no; then
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if test $WANT_REGEX = auto -o $WANT_REGEX = pcre; then
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AC_CHECK_LIB(pcre, pcre_compile,
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[AC_MSG_RESULT(using pcre); AC_DEFINE(HAVE_PCRE) LIBS="$LIBS -lpcre" have_regex=yes], [])
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fi
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fi
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if test $have_regex = no; then
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if test $WANT_REGEX = auto -o $WANT_REGEX = regcmp; then
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AC_CHECK_FUNC(regcmp,
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AC_MSG_RESULT(using regcmp); AC_DEFINE(HAVE_REGCMP) have_regex=yes)
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fi
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fi
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if test $have_regex = no; then
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if test $WANT_REGEX = auto -o $WANT_REGEX = regcomp; then
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AC_TRY_LINK([
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#include "regexp.h"], [regcomp("");],
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AC_MSG_RESULT(using V8 regcomp); AC_DEFINE(HAVE_V8_REGCOMP) have_regex=yes)
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fi
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fi
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if test $have_regex = no && test -f ${srcdir}/regexp.c; then
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if test $WANT_REGEX = auto -o $WANT_REGEX = regcomp-local; then
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AC_MSG_RESULT(using V8 regcomp -- local source); AC_DEFINE(HAVE_V8_REGCOMP) AC_DEFINE(HAVE_REGEXEC2) REGEX_O='regexp.$(O)' AC_SUBST(REGEX_O) have_regex=yes
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fi
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fi
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if test $have_regex = no; then
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if test $WANT_REGEX = auto -o $WANT_REGEX = re_comp; then
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AC_MSG_RESULT(using re_comp); AC_CHECK_FUNC(re_comp, AC_DEFINE(HAVE_RE_COMP) have_regex=yes)
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fi
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fi
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if test $have_regex = no; then
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AC_MSG_RESULT(cannot find regular expression library); AC_DEFINE(NO_REGEX)
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fi
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AC_ARG_WITH(editor,
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[ --with-editor=PROGRAM use PROGRAM as the default editor [vi]],
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AC_DEFINE_UNQUOTED(EDIT_PGM, "$withval"))
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AC_OUTPUT(Makefile)
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