configure

LinuxTools一书随书源代码

#!/bin/sh
#
# rdesktop: A Remote Desktop Protocol client
# configure script
# Copyright (C) Matthew Chapman 1999-2002
#

echo "rdesktop build configuration script"
echo

echo "# Generated by $0 $*" >Makeconf


# Process command line options

cflags='-DKEYMAP_PATH=\"$(KEYMAP_PATH)\"'
ldflags=''
rpath=

for arg in $*; do
optarg=`echo $arg | sed 's/[-a-z]*=//'`
case $arg in
  --prefix=*)
    echo "prefix      = $optarg" >>Makeconf
    ;;
  --exec-prefix=*)
    echo "exec_prefix = $optarg" >>Makeconf
    ;;
  --bindir=*)
    echo "bindir      = $optarg" >>Makeconf
    ;;
  --mandir=*)
    echo "mandir      = $optarg" >>Makeconf
    ;;
  --sharedir=*)
    echo "datadir     = $optarg" >>Makeconf
    ;;
  --with-x*)
    extraxdir=$optarg
    ;;
  --with-openssl*)
    extrassldir=$optarg
    ;;
  --without-openssl*)
    withoutopenssl=yes
    ;;
  --with-egd-socket=*)
    extraegdpath=$optarg
    ;;
  --with-debug)
    cflags="$cflags -g -DWITH_DEBUG"
    ;;
  --with-debug-kbd)
    cflags="$cflags -g -DWITH_DEBUG_KBD"
    ;;
  --without-debug*)
    ;;
  *)
    echo "Target directories:"
    echo " --prefix=PREFIX         location for architecture-independent files"
    echo " --exec-prefix=EPREFIX   location for architecture-dependent files"
    echo " --bindir=BINDIR         location for program binaries [EPREFIX/bin]"
    echo " --mandir=MANDIR         location for man pages [PREFIX/man]"
    echo " --sharedir=SHAREDIR     location for architecture-independent shared files [PREFIX/share/rdesktop]"
    echo
    echo "Build configuration:"
    echo " --with-x=DIR            look for X Window System at DIR/include, DIR/lib"
    echo " --with-openssl=DIR      look for OpenSSL at DIR/include, DIR/lib"
    echo " --without-openssl       use in-tree crypto, even if OpenSSL is available"
    echo " --with-egd-socket=PATH  look for Entropy Gathering Daemon socket at PATH"
    echo " --with-debug            enable protocol debugging output"
    echo " --with-debug-kbd        enable debugging of keyboard handling"
    echo
    rm -f Makeconf
    exit 1
    ;;
esac
done


# Find compiler

compilers="$CC gcc cc"

for compiler in $compilers; do
    if [ -x "`which $compiler`" ]; then
	cc=$compiler
	break
    fi
done

if [ -z "$cc" ]; then
    echo "ERROR: could not find a C compiler (tried: $compilers)"
    echo "You probably want to install gcc"
    exit 1
fi

echo "CC          = $cc" >>Makeconf

if $cc -v 2>&1 |grep '^gcc' >/dev/null; then
    cflags="$cflags -Wall -O2"
else
    cflags="$cflags -O"
fi


# Find X installation

xdirs="$extraxdir /usr/X11R6 /usr/X11 /usr/openwin /usr /usr/local/X11R6 /usr/local/X11 /usr/local"

for dir in $xdirs; do
    if [ -f $dir/include/X11/Xlib.h ]; then
	xdir=$dir
	break
    fi
done

if [ -z "$xdir" ]; then
    echo "ERROR: could not find X Window System headers"
    echo "(searched for include/X11/Xlib.h in: $xdirs)"

    # additional helpful information for Linux users
    if [ -f /etc/redhat_release ]; then
      echo You probably need to install the XFree86-devel package
    elif [ -f /etc/debian_version ]; then
      echo You probably need to install the xlibs-dev package
    fi
    exit 1
fi

echo "X Window System:"
echo "  includes  $xdir/include"
echo "  libraries $xdir/lib"
echo

if [ $xdir != "/usr" ]; then
    cflags="$cflags -I$xdir/include"
    ldflags="$ldflags -L$xdir/lib"
    rpath="$rpath:$xdir/lib"
fi

ldflags="$ldflags -lX11"


if [ -z "$withoutopenssl" ]; then
    # Find OpenSSL installation if available
    ssldirs="$extrassldir /usr/openssl /usr/ssl /usr /usr/local/openssl /usr/local/ssl /usr/local"
    
    for dir in $ssldirs; do
    	if [ -f $dir/include/openssl/rc4.h ]; then
    	    ssldir=$dir
    	    break
    	fi
    done
    
    if [ -z "$ssldir" ]; then
    	echo "WARNING: could not find OpenSSL headers"
    	echo "(searched for include/openssl/rc4.h in: $ssldirs)"
    	echo "Using in-tree crypto; installing OpenSSL is recommended."
    	echo
    else
    	echo "OpenSSL:"
    	echo "  includes  $ssldir/include"
    	echo "  libraries $ssldir/lib"
    	echo
    
    	echo "CRYPTOBJ    =" >>Makeconf
    
    	if [ $ssldir != "/usr" ]; then
    	    cflags="$cflags -I$ssldir/include"
    	    ldflags="$ldflags -L$ssldir/lib"
    	    rpath="$rpath:$ssldir/lib"
    	fi
    
    	cflags="$cflags -DWITH_OPENSSL"
    	ldflags="$ldflags -lcrypto"
    fi
fi
    

# Find EGD socket if we don't have /dev/urandom or /dev/random

if [ ! -c /dev/random -a ! -c /dev/urandom ]; then
    egdpaths="$extraegdpath /var/run/egd-pool /dev/egd-pool /etc/egd-pool /etc/entropy"

    for path in $egdpaths; do
	# -e isn't portable, so we use -r
	if [ -r $path ]; then
	    egdpath=$path
	    break
	fi
    done

    if [ -z "$egdpath" ]; then
	echo "WARNING: could not find /dev/urandom, /dev/random or Entropy Gathering Daemon (EGD) socket"
	echo "(searched: $egdpaths)"
	echo "Session keys may be less secure; installing a system randomness source is recommended."
	echo
    else
	echo "Entropy Gathering Daemon (EGD):"
        echo "  socket    $egdpath"
	echo
	cflags="$cflags -DEGD_SOCKET=\\\"$egdpath\\\""
    fi
fi


# Platform-specific options

# strip leading colon from rpath
rpath=`echo $rpath |sed 's/^://'`

case `uname -s` in
  SunOS)
    ldflags="$ldflags -lsocket -lnsl -R$rpath"
    ;;
  OSF1)
    ldflags="$ldflags -Wl,-rpath,$rpath"
    ;;
esac


echo "CFLAGS      = $cflags" >>Makeconf
echo "LDFLAGS     = $ldflags" >>Makeconf

echo "configure complete - now run make"