configure

早期freebsd实现

#!/bin/sh
# Guess values for system-dependent variables and create Makefiles.
# Generated automatically using autoconf.
# Copyright (C) 1991, 1992, 1993 Free Software Foundation, Inc.

# This program is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation; either version 2, or (at your option)
# any later version.

# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
# GNU General Public License for more details.

# You should have received a copy of the GNU General Public License
# along with this program; if not, write to the Free Software
# Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.

# Usage: configure [--srcdir=DIR] [--host=HOST] [--gas] [--nfp] [--no-create]
#        [--prefix=PREFIX] [--exec-prefix=PREFIX] [--with-PACKAGE] [TARGET]
# Ignores all args except --srcdir, --prefix, --exec-prefix, --no-create, and
# --with-PACKAGE unless this script has special code to handle it.


for arg
do
  # Handle --exec-prefix with a space before the argument.
  if test x$next_exec_prefix = xyes; then exec_prefix=$arg; next_exec_prefix=
  # Handle --host with a space before the argument.
  elif test x$next_host = xyes; then next_host=
  # Handle --prefix with a space before the argument.
  elif test x$next_prefix = xyes; then prefix=$arg; next_prefix=
  # Handle --srcdir with a space before the argument.
  elif test x$next_srcdir = xyes; then srcdir=$arg; next_srcdir=
  else
    case $arg in
     # For backward compatibility, also recognize exact --exec_prefix.
     -exec-prefix=* | --exec_prefix=* | --exec-prefix=* | --exec-prefi=* | --exec-pref=* | --exec-pre=* | --exec-pr=* | --exec-p=* | --exec-=* | --exec=* | --exe=* | --ex=* | --e=*)
	exec_prefix=`echo $arg | sed 's/[-a-z_]*=//'` ;;
     -exec-prefix | --exec_prefix | --exec-prefix | --exec-prefi | --exec-pref | --exec-pre | --exec-pr | --exec-p | --exec- | --exec | --exe | --ex | --e)
	next_exec_prefix=yes ;;

     -gas | --gas | --ga | --g) ;;

     -host=* | --host=* | --hos=* | --ho=* | --h=*) ;;
     -host | --host | --hos | --ho | --h)
	next_host=yes ;;

     -nfp | --nfp | --nf) ;;

     -no-create | --no-create | --no-creat | --no-crea | --no-cre | --no-cr | --no-c | --no- | --no)
        no_create=1 ;;

     -prefix=* | --prefix=* | --prefi=* | --pref=* | --pre=* | --pr=* | --p=*)
	prefix=`echo $arg | sed 's/[-a-z_]*=//'` ;;
     -prefix | --prefix | --prefi | --pref | --pre | --pr | --p)
	next_prefix=yes ;;

     -srcdir=* | --srcdir=* | --srcdi=* | --srcd=* | --src=* | --sr=* | --s=*)
	srcdir=`echo $arg | sed 's/[-a-z_]*=//'` ;;
     -srcdir | --srcdir | --srcdi | --srcd | --src | --sr | --s)
	next_srcdir=yes ;;

     -with-* | --with-*)
       package=`echo $arg|sed 's/-*with-//'`
       # Delete all the valid chars; see if any are left.
       if test -n "`echo $package|sed 's/[-a-zA-Z0-9_]*//g'`"; then
         echo "configure: $package: invalid package name" >&2; exit 1
       fi
       eval "with_`echo $package|sed s/-/_/g`=1" ;;

     *) ;;
    esac
  fi
done

trap 'rm -f conftest* core; exit 1' 1 3 15

rm -f conftest*
compile='${CC-cc} $DEFS conftest.c -o conftest $LIBS >/dev/null 2>&1'

# A filename unique to this package, relative to the directory that
# configure is in, which we can look for to find out if srcdir is correct.
unique_file=groff/groff.cc

# Find the source files, if location was not specified.
if test -z "$srcdir"; then
  srcdirdefaulted=yes
  # Try the directory containing this script, then `..'.
  prog=$0
  confdir=`echo $prog|sed 's%/[^/][^/]*$%%'`
  test "X$confdir" = "X$prog" && confdir=.
  srcdir=$confdir
  if test ! -r $srcdir/$unique_file; then
    srcdir=..
  fi
fi
if test ! -r $srcdir/$unique_file; then
  if test x$srcdirdefaulted = xyes; then
    echo "configure: Can not find sources in \`${confdir}' or \`..'." 1>&2
  else
    echo "configure: Can not find sources in \`${srcdir}'." 1>&2
  fi
  exit 1
fi
# Preserve a srcdir of `.' to avoid automounter screwups with pwd.
# But we can't avoid them for `..', to make subdirectories work.
case $srcdir in
  .|/*|~*) ;;
  *) srcdir=`cd $srcdir; pwd` ;; # Make relative path absolute.
esac

if test -z "$prefix"
then
  echo checking for grops to derive installation directory prefix
  saveifs="$IFS"; IFS="$IFS:"
  for dir in $PATH; do
    test -z "$dir" && dir=.
    if test $dir != . && test -f $dir/grops; then
      # Not all systems have dirname.
      prefix=`echo $dir|sed 's%/[^/][^/]*$%%'`
      break
    fi
  done
  IFS="$saveifs"
fi
if test -z "$prefix"
then
  echo checking for gcc to derive installation directory prefix
  saveifs="$IFS"; IFS="$IFS:"
  for dir in $PATH; do
    test -z "$dir" && dir=.
    if test $dir != . && test -f $dir/gcc; then
      # Not all systems have dirname.
      prefix=`echo $dir|sed 's%/[^/][^/]*$%%'`
      break
    fi
  done
  IFS="$saveifs"
fi

if test -z "$CC"; then
  echo checking for gcc
  saveifs="$IFS"; IFS="${IFS}:"
  for dir in $PATH; do
    test -z "$dir" && dir=.
    if test -f $dir/gcc; then
      CC="gcc"
      break
    fi
  done
  IFS="$saveifs"
fi
test -z "$CC" && CC="cc"

# Find out if we are using GNU C, under whatever name.
cat > conftest.c <<EOF
#ifdef __GNUC__
  yes
#endif
EOF
${CC-cc} -E conftest.c > conftest.out 2>&1
if egrep yes conftest.out >/dev/null 2>&1; then
  GCC=1 # For later tests.
fi
rm -f conftest*

cc_compile='$CCC conftest.cc -o conftest $CCLIBS $LIBS >/dev/null 2>&1'

if test -z "$CCC"; then
# See whether the C compiler is also a C++ compiler.
echo checking if C compiler is also a C++ compiler
cat <<EOF > conftest.cc
#ifdef __cplusplus
  yes
#endif
EOF
$CC -E conftest.cc >conftest.out 2>&1
if egrep yes conftest.out >/dev/null 2>&1; then
  CCC="$CC"
fi
fi
if test -z "$CCC"; then
  echo checking for g++
  saveifs="$IFS"; IFS="${IFS}:"
  for dir in $PATH; do
    test -z "$dir" && dir=.
    if test -f $dir/g++; then
      CCC="g++"
      break
    fi
  done
  IFS="$saveifs"
fi
test -z "$CCC" && CCC=""

if test -z "$CCC"; then
  echo checking for CC
  saveifs="$IFS"; IFS="${IFS}:"
  for dir in $PATH; do
    test -z "$dir" && dir=.
    if test -f $dir/CC; then
      CCC="CC"
      break
    fi
  done
  IFS="$saveifs"
fi
test -z "$CCC" && CCC=""

if test -z "$CCC"; then
  echo checking for cc++
  saveifs="$IFS"; IFS="${IFS}:"
  for dir in $PATH; do
    test -z "$dir" && dir=.
    if test -f $dir/cc++; then
      CCC="cc++"
      break
    fi
  done
  IFS="$saveifs"
fi
test -z "$CCC" && CCC=""

if test -z "$CCC"; then
cat <<EOM
This package requires a C++ compiler, but I couldn't find one.
Set the environment variable CCC to the name of your C++ compiler.
EOM
rm -f conftest* core; exit 1
fi
echo checking that C++ compiler can compile very simple C++ program
cat <<EOF > conftest.cc

extern "C" { void exit(int); }
int main() { exit(0); }

EOF
rm -f conftest
eval $cc_compile
if test -s conftest && (./conftest) 2>/dev/null; then
  :
else
  cat <<EOM
$CCC was unable successfully to compile a very simple C++ program
(the C++ program was in a file with a suffix of .cc)
EOM
rm -f conftest* core; exit 1

fi
rm -f conftest*
echo checking that C++ static constructors and destructors are called
cat <<EOF > conftest.cc

extern "C" {
  void exit(int);
  void _exit(int);
}
int i;
struct A {
  char dummy;
  A() { i = 1; }
  ~A() { if (i == 1) _exit(0); }
};
A a;
main() { exit(1); }

EOF
rm -f conftest
eval $cc_compile
if test -s conftest && (./conftest) 2>/dev/null; then
  :
else
  cat <<EOM
$CCC is not installed correctly: static constructors and destructors do not work
EOM
rm -f conftest* core; exit 1

fi
rm -f conftest*
echo checking for C++ header files
cat <<EOF >conftest.cc
#include <stdio.h>
extern "C" { void exit(int); }
int main() { exit(0); } void t() { fopen(0, 0); }
EOF
if eval $cc_compile; then
  :
else
  cat <<\EOF
Your header files do not appear to support C++.
I was unable to compile and link a simple C++ program that used a function
declared in <stdio.h>.
If you're using gcc/g++, you should install libg++.
EOF
rm -f conftest* core; exit 1
fi
rm -f conftest*
if test -z "$PSPRINT"
then
	for p in lpr
do
if test -z "$LPR"; then
  echo checking for $p
  saveifs="$IFS"; IFS="${IFS}:"
  for dir in $PATH; do
    test -z "$dir" && dir=.
    if test -f $dir/$p; then
      LPR="$p"
      break
    fi
  done
  IFS="$saveifs"
fi
test -z "$LPR" && LPR=""

test -n "$LPR" && break
done

	for p in lp
do
if test -z "$LP"; then
  echo checking for $p
  saveifs="$IFS"; IFS="${IFS}:"
  for dir in $PATH; do
    test -z "$dir" && dir=.
    if test -f $dir/$p; then
      LP="$p"
      break
    fi
  done
  IFS="$saveifs"
fi
test -z "$LP" && LP=""

test -n "$LP" && break
done

	if test -n "$LPR" && test -n "$LP"
	then
		# HP-UX provides an lpr command that emulates lpr using lp,
		# but it doesn't have lpq; in this case we want to use lp
		# rather than lpr.
		for p in lpq
do
if test -z "$LPQ"; then
  echo checking for $p
  saveifs="$IFS"; IFS="${IFS}:"
  for dir in $PATH; do
    test -z "$dir" && dir=.
    if test -f $dir/$p; then
      LPQ="$p"
      break
    fi
  done
  IFS="$saveifs"
fi
test -z "$LPQ" && LPQ=""

test -n "$LPQ" && break
done

		test -n "$LPQ" || LPR=
	fi
	if test -n "$LPR"
	then
		PSPRINT="$LPR"
	elif test -n "$LP"
	then
		PSPRINT="$LP"
	fi
fi

# Figure out DVIPRINT from PSPRINT.
if test -n "$PSPRINT" && test -z "$DVIPRINT"
then
	if test "X$PSPRINT" = "Xlpr"
	then
		DVIPRINT="lpr -d"
	else
		DVIPRINT="$PSPRINT"
	fi
fi

echo checking for perl
PERLPATH=
saveifs="$IFS"; IFS="${IFS}:"
for dir in $PATH; do
  test -z "$dir" && dir=.
  if test -f $dir/perl; then
     PERLPATH="$dir/perl"
     break
  fi
done
IFS="$saveifs"

if test -z "$YACC"; then
  echo checking for byacc
  saveifs="$IFS"; IFS="${IFS}:"
  for dir in $PATH; do
    test -z "$dir" && dir=.
    if test -f $dir/byacc; then
      YACC="byacc"
      break
    fi
  done
  IFS="$saveifs"
fi
test -z "$YACC" && YACC=""

if test -z "$YACC"; then
  echo checking for bison
  saveifs="$IFS"; IFS="${IFS}:"
  for dir in $PATH; do
    test -z "$dir" && dir=.
    if test -f $dir/bison; then
      YACC="bison -y"
      break
    fi
  done
  IFS="$saveifs"
fi
test -z "$YACC" && YACC="yacc"


if test -z "$RANLIB"; then
  echo checking for ranlib
  saveifs="$IFS"; IFS="${IFS}:"
  for dir in $PATH; do
    test -z "$dir" && dir=.
    if test -f $dir/ranlib; then
      RANLIB="ranlib"
      break
    fi
  done
  IFS="$saveifs"
fi
test -z "$RANLIB" && RANLIB="@:"

# Make sure to not get the incompatible SysV /etc/install and
# /usr/sbin/install, which might be in PATH before a BSD-like install,
# or the SunOS /usr/etc/install directory, or the AIX /bin/install,
# or the AFS install, which mishandles nonexistent args.  (Sigh.)
if test -z "$INSTALL"; then
  echo checking for install
  saveifs="$IFS"; IFS="${IFS}:"
  for dir in $PATH; do
    test -z "$dir" && dir=.
    case $dir in
    /etc|/usr/sbin|/usr/etc|/usr/afsws/bin) ;;
    *)
      if test -f $dir/install; then
	if grep dspmsg $dir/install >/dev/null 2>&1; then
	  : # AIX
	else
	  INSTALL="$dir/install -c"
	  INSTALL_PROGRAM='$(INSTALL)'
	  INSTALL_DATA='$(INSTALL) -m 644'
	  break
	fi
      fi
      ;;
    esac
  done
  IFS="$saveifs"
fi
INSTALL=${INSTALL-cp}
INSTALL_PROGRAM=${INSTALL_PROGRAM-'$(INSTALL)'}
INSTALL_DATA=${INSTALL_DATA-'$(INSTALL)'}

echo checking for ln -s
rm -f conftestdata
if ln -s X conftestdata 2>/dev/null
then
  rm -f conftestdata
  LN_S="ln -s"
else
  LN_S=ln
fi


echo checking for etags C++ option
for flag in p C
do
	test -z "$ETAGSCCFLAG" || break
	>conftest.c
	(etags -$flag -o /dev/null conftest.c >/dev/null 2>&1) 2>/dev/null &&
		ETAGSCCFLAG="-$flag"
	rm -f conftest.c
done

echo 'checking for csh # hack'
cat <<EOF >conftest.sh
#!/bin/sh
true || exit 0
export PATH || exit 0
exit 1
EOF
chmod +x conftest.sh
if echo ./conftest.sh | (csh >/dev/null 2>&1) >/dev/null 2>&1
then
	:; SH_SCRIPT_SED_CMD='1s/.*/:/'
else
	:; SH_SCRIPT_SED_CMD=''
fi
rm -f conftest.sh


echo checking for unistd.h
echo checking how to run the C preprocessor
if test -z "$CPP"; then
  CPP='${CC-cc} -E'
  cat > conftest.c <<EOF
#include <stdio.h>
EOF
err=`eval "$CPP $DEFS conftest.c 2>&1 >/dev/null"`
if test -z "$err"; then
  :
else
  CPP=/lib/cpp
fi
rm -f conftest*
fi

cat > conftest.c <<EOF
#include <unistd.h>
EOF
err=`eval "$CPP $DEFS conftest.c 2>&1 >/dev/null"`
if test -z "$err"; then
  DEFS="$DEFS -DHAVE_UNISTD_H=1"
fi
rm -f conftest*