path: root/configure

#!/bin/sh
# Configure script for util-linux - aeb, 990205
#
# We need to find out the following things:
#
# 1. For mount/nfsmount.c: is inet_aton() available?
# 2. For fdisk/fdisksunlabel.c: is there a <scsi/scsi.h>?
#    For fdisk/fdisk.c: is there a <linux/blkpg.h>?
# 3. For sys-utils/ipcs.c: do we need __KERNEL__ and <linux/linkage.h>?
# 4. For sys-utils/cytune.c: do we need <linux/tqueue.h>?
# 5. For sys-utils/kbd_rate.c: does <linux/kd.h> exist?
# 6. For cfdisk, setterm, more, ul: do we have ncurses? How installed?
#    For more: do we have libtermcap?
# 7. For chfn, chsh, login, newgrp, passwd: do we need -lcrypt?
# 8. For sln: does static compilation work?
#  9. For lib/nls.h: do we have <locale.h>?
# 10. For lib/nls.h: do we have <libintl.h> and gettext()?
# 11. For xgettext: does it take the option --foreign-user?
# 12. For cal.c: do we have <langinfo.h>?
# 13. For err.c: do we have __progname?
# 14. For script.c: do we have <pty.h> and openpty()?

if test "$RANDOM" = "$RANDOM"; then
  # Plain old Bourne shell.
  echo checking for gcc
  test -z "$CC" -a -n "`gcc 2>&1`" && CC="gcc -O"
else
  # ksh, bash or zsh.  ksh and zsh write "command not found" to stderr.
  echo checking for gcc
  test -z "$CC" && type gcc && CC="gcc -O"
fi

CC=${CC-cc}
CFLAGS=${CFLAGS-"-O"}
DEFS=
LIBS=
compile='$CC $CFLAGS $DEFS conftest.c -o conftest $LIBS >/dev/null 2>&1'
static_compile='$CC -static $DEFS conftest.c -o conftest $LIBS >/dev/null 2>&1'

rm -f make_include defines.h conftest.c conftest

#
# 1. For mount/nfsmount.c: is inet_aton() available?
#
echo "
#include <sys/socket.h>
#include <netinet/in.h>
#include <arpa/inet.h>
main(int a, char **v){
  if (a == -1)	/* false */
	inet_aton((const char *) 0, (struct in_addr *) 0);
  exit(0);
}
" > conftest.c
eval $compile
if test -s conftest && ./conftest 2>/dev/null; then
	echo "#define HAVE_inet_aton" >> defines.h
	echo "You have inet_aton()"
else
	echo "You don't have inet_aton()"
fi
rm -f conftest conftest.c

#
# 2. For fdisk/fdisksunlabel.c: is <scsi/scsi.h> available?
#    Some kernels have <scsi/scsi.h> that uses u_char
#    But maybe there is already a typedef. Let us use a #define
#
echo "
#define u_char	unsigned char
#include <scsi/scsi.h>
#undef u_char
main(){ exit(0); }
" > conftest.c
eval $compile
if test -s conftest && ./conftest 2>/dev/null; then
        echo "#define HAVE_scsi_h" >> defines.h
        echo "You have <scsi/scsi.h>"
else
        echo "You don't have <scsi/scsi.h>"
fi
rm -f conftest conftest.c

#
# 2A. For fdisk/fdisk.c: is <linux/blkpg.h> available?
#
echo "
#include <linux/blkpg.h>
main(){ exit(0); }
" > conftest.c
eval $compile
if test -s conftest && ./conftest 2>/dev/null; then
        echo "#define HAVE_blkpg_h" >> defines.h
        echo "You have <linux/blkpg.h>"
else
        echo "You don't have <linux/blkpg.h>"
fi
rm -f conftest conftest.c

#
# 3. ipcs.c includes <sys/shm.h> and family
# Do we need __KERNEL__ and asmlinkage for SHM_DEST?
#
echo "
#include <sys/shm.h>
main(){ int i=SHM_DEST; exit(0); }
" > conftest.c
eval $compile
if test -s conftest && ./conftest 2>/dev/null; then
	echo "You don't need <linux/linkage.h>"
else
	echo "#define NEED_linkage_h" >> defines.h
	echo "You need <linux/linkage.h>"
fi
rm -f conftest conftest.c

#
# 4. cytune.c may need struct tq_struct
#
echo "
#include <sys/types.h>
#include <linux/cyclades.h>
main(){ exit(0); }
" > conftest.c
eval $compile
if test -s conftest && ./conftest 2>/dev/null; then
	echo "You don't need <linux/tqueue.h>"
else
	echo "#define NEED_tqueue_h" >> defines.h
	echo "You need <linux/tqueue.h>"
fi
rm -f conftest conftest.c

#
# 5. Does <linux/kd.h> exist?
#
echo "
#include <linux/kd.h>
main(){ exit(0); }
" > conftest.c
eval $compile
if test -s conftest && ./conftest 2>/dev/null; then
	echo "#define HAVE_kd_h" >> defines.h
	echo "You have <linux/kd.h>"
else
	echo "You don't have <linux/kd.h>"
fi
rm -f conftest conftest.c

#
# 6. How is [n]curses installed?
#
test_curses_h=0
have_ncurses=1
if [ -f /usr/include/ncurses/curses.h ]; then
	echo "HAVE_NCURSES=yes" >> make_include
	echo "CURSESFLAGS=-I/usr/include/ncurses -DNCH=0" >> make_include
	echo "You have ncurses. Using <ncurses/curses.h>."
elif [ -f /usr/include/ncurses.h ]; then
	echo "HAVE_NCURSES=yes" >> make_include
	echo "CURSESFLAGS=-DNCH=1" >> make_include
	echo "You have ncurses. Using <ncurses.h>."
elif [ -f /usr/local/include/ncurses.h ]; then
	echo "HAVE_NCURSES=yes" >> make_include
	echo "CURSESFLAGS=-I/usr/local/include -DNCH=1" >> make_include
	echo "You have ncurses. Using /usr/local/include/ncurses.h."
elif [ -f /usr/include/curses.h ]; then
	test_curses_h=1
else
	have_ncurses=0
fi
#
# If we found a curses.h, test whether it is ncurses
# (It should define __NCURSES_H and NCURSES_VERSION and NCURSES_CONST ...)
#
if [ $test_curses_h = 1 ]; then
  echo "
  #include <curses.h>
  main(){ char *c = NCURSES_VERSION; exit(0); }
  " > conftest.c
  eval $compile
  if test -s conftest && ./conftest 2>/dev/null; then
	echo "HAVE_NCURSES=yes" >> make_include
	echo "CURSESFLAGS=-DNCH=0" >> make_include
	echo "You have ncurses. Using <curses.h>."
  else
	have_ncurses=0
  fi
  rm -f conftest conftest.c
fi

if [ $have_ncurses = 0 ]; then
	echo "HAVE_NCURSES=no" >> make_include
	echo "You don't have ncurses - I will not make ul and setterm."
else
	echo "LIBCURSES=-lncurses" >> make_include
fi

#
# Some systems have /usr/lib/termcap.so -> /usr/lib/termcap.so.2
# where however the latter file does not exist. When termcap does
# not exist, we can try to compile more with curses instead.
#
echo '
#include <termcap.h>
main(){ exit(0); tgetnum("li"); }
' > conftest.c
LIBS=-ltermcap
eval $compile
LIBS=
if test -s conftest && ./conftest 2>/dev/null; then
	echo "#define HAVE_termcap" >> defines.h
	echo "LIBTERMCAP=-ltermcap" >> make_include
	echo "You have termcap"
else
	echo "HAVE_TERMCAP=no" >> make_include
	echo "You don't have termcap"
fi
rm -f conftest conftest.c

#
# 7. Do we need -lcrypt?
#
echo '
#define _XOPEN_SOURCE
#include <unistd.h>
main(){ char *c = crypt("abc","pw"); exit(0); }
' > conftest.c
eval $compile
if test -s conftest && ./conftest 2>/dev/null; then
	echo "NEED_LIBCRYPT=no" >> make_include
	echo "You don't need -lcrypt"
else
	echo "NEED_LIBCRYPT=yes" >> make_include
	echo "You need -lcrypt"
fi
rm -f conftest conftest.c

#
# 8. Does static compilation work?
#
echo "
main(){ return 0; }
" > conftest.c
eval $static_compile
if test -s conftest && ./conftest 2>/dev/null; then
	: OK, nothing special
else
	echo "CAN_DO_STATIC=no" >> make_include
	echo "Strange... Static compilation fails here."
fi

#
# 9. For lib/nls.h: do we have <locale.h>?
#
echo "
#include <locale.h>
main(){ exit(0); }
" > conftest.c
eval $compile
if test -s conftest && ./conftest 2>/dev/null; then
        echo "#define HAVE_locale_h" >> defines.h
        echo "You have <locale.h>"
else
        echo "You don't have <locale.h>"
fi
rm -f conftest conftest.c


#
# 10. For lib/nls.h: do we have <libintl.h> and gettext() ?
#
echo '
#include <libintl.h>
main(int a, char **v){
  if (a == -1)  /* false */
        gettext("There is no gettext man page\n");
  exit(0);
}
' > conftest.c
eval $compile
if test -s conftest && ./conftest 2>/dev/null; then
        echo '#define HAVE_libintl_h' >> defines.h
        echo "You have <libintl.h> and gettext()"
        echo '#define ENABLE_NLS' >> defines.h
        echo "Assuming that you want to enable NLS support."
        echo "(Otherwise, edit defines.h)"
        ENABLE_NLS=yes
else
        echo "You don't have <libintl.h>"
        ENABLE_NLS=no
fi
rm -f conftest conftest.c


#
# 11. Does xgettext exist and take the option --foreign-user?
#
if (test $ENABLE_NLS = yes && type xgettext > /dev/null 2>&1); then
	msg=`xgettext --foreign-user 2>&1 | grep unrecognized`
	if test -n "$msg"; then
		echo "FOREIGN = " >> make_include
	else
		echo "FOREIGN = --foreign-user" >> make_include
	fi
	echo "HAVE_XGETTEXT=yes" >> make_include
else
	echo "HAVE_XGETTEXT=no" >> make_include
fi

#
# 12. For cal.c: do we have <langinfo.h>?
#
echo "
#include <langinfo.h>
main(){ exit(0); }
" > conftest.c
eval $compile
if test -s conftest && ./conftest 2>/dev/null; then
        echo "#define HAVE_langinfo_h" >> defines.h
        echo "You have <langinfo.h>"
else
        echo "You don't have <langinfo.h>"
fi
rm -f conftest conftest.c


#
# 13. For err.c: do we have __progname?
# [make sure gcc -O does not optimize the access away]
#
echo "
#include <stdio.h>
extern char *__progname;
main(){ printf(__progname); exit(0); }
" > conftest.c
eval $compile
if test -s conftest && ./conftest > /dev/null 2>/dev/null; then
        echo "#define HAVE_progname" >> defines.h
        echo "You have __progname"
else
        echo "You don't have __progname"
fi
rm -f conftest conftest.c


#
# 14. For script.c: do we have <pty.h> and openpty()?
#
echo "
#include <pty.h>
main(){ exit(0); openpty(0, 0, 0, 0, 0); }
" > conftest.c
eval $compile
if test -s conftest && ./conftest 2>/dev/null; then
	echo "HAVE_OPENPTY=yes" >> make_include
	echo "#define HAVE_openpty" >> defines.h
	echo "You have <pty.h> and openpty()"
else
	echo "You don't have <pty.h> and openpty()"
fi
rm -f conftest conftest.c