xapian-letor/xapianletor-config.in

   1 #!/bin/sh
   2 # @configure_input@
   3 #
   4 # Copyright (C) 2002,2003,2004,2005,2006,2007,2009,2010,2012,2014,2015 Olly Betts
   5 #
   6 # This program is free software; you can redistribute it and/or
   7 # modify it under the terms of the GNU General Public License as
   8 # published by the Free Software Foundation; either version 2 of the
   9 # License, or (at your option) any later version.
  10 #
  11 # This program is distributed in the hope that it will be useful,
  12 # but WITHOUT ANY WARRANTY; without even the implied warranty of
  13 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  14 # GNU General Public License for more details.
  15 #
  16 # You should have received a copy of the GNU General Public License
  17 # along with this program; if not, write to the Free Software
  18 # Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301
  19 # USA
  20
  21 PROG_NAME=xapianletor-config
  22 PROG_DESC="report information about the installed version of xapian-letor"
  23
  24 # ${prefix} and ${exec_prefix} are used in some @-substitutions, and
  25 # ${prefix} is usually used in the exec_prefix @-substitution.
  26 prefix="@prefix@"
  27 exec_prefix="@exec_prefix@"
  28
  29 # Show usage information and exit with the specified exit status.
  30 show_usage() {
  31     cat <<EOF
  32 Usage: $PROG_NAME OPTION...
  33
  34 Options:
  35   --cxxflags   output all preprocessor and C++ compiler flags
  36   --libs       output all linker flags
  37   --ltlibs     output linker flags for linking using GNU libtool
  38   --static     make other options report values for static linking
  39   --swigflags  output preprocessor flags for use with SWIG
  40   --help       output this help and exit
  41   --version    output version information and exit
  42
  43 Report bugs to <@PACKAGE_BUGREPORT@>.
  44 EOF
  45
  46     exit "$1"
  47 }
  48
  49 # This script requires at least one argument.
  50 [ 0 != "$#" ] || show_usage 1 1>&2
  51
  52 ##UNINSTONLYBEGIN
  53 # Cached value.  Note that this a return code, so 0 means uninstalled!
  54 is_uninstalled_cache=
  55
  56 # Check if this is an uninstalled xapianletor-config.
  57 is_uninstalled()
  58 {
  59     if [ -z "$is_uninstalled_cache" ]; then
  60         [ -n "$builddir" -a -f "${builddir}Makefile" ]
  61         is_uninstalled_cache=$?
  62     fi
  63     return $is_uninstalled_cache
  64 }
  65
  66 # -I options for compiling against an uninstalled xapian-letor.
  67 set_I_for_uninstalled() {
  68     I=
  69     # version.h is generated by configure, so we also need builddir
  70     # in the include path if it's different to srcdir.
  71     [ "@abs_srcdir@" != "@abs_builddir@" ] && I="-I@abs_builddir@/include "
  72     I="$I-I@abs_srcdir@/include"
  73 }
  74 ##UNINSTONLYEND
  75
  76 need_explicit_dependencies()
  77 {
  78     # For static libraries, we need to explicitly link with dependency_libs
  79     # on all platforms.  For shared libraries, it depends on the platform.
  80
  81     # xapianletor-config --static means static libraries.
  82     [ no = "$static" ] || return 0 # "true"
  83
  84     # If the .la file hasn't been installed, assume there are shared libraries.
  85     if [ -f "@libdir@/libxapianletor.la" ] ; then
  86         # If "$dlname" is empty, we only have static libraries.
  87         extract_dlname "@libdir@/libxapianletor.la"
  88         [ -n "$dlname" ] || return 0 # "true"
  89     fi
  90
  91     # Vanilla libtool set this to either "yes" or "unknown" and then handles
  92     # both of these the same way, but our configure forces this to "no" on
  93     # platforms where we know that is appropriate.
  94     [ no != "@link_all_deplibs_CXX@" ] || return 1 # "false"
  95
  96     return 0 # "true"
  97 }
  98
  99 # -L option required (if any).
 100 set_L_to_library_path() {
 101     L=
 102     [ /usr/lib != "@libdir@" ] && L="-L@libdir@ "
 103 }
 104
 105 set_I() {
 106     ##UNINSTONLYBEGIN
 107     if is_uninstalled ; then
 108         set_I_for_uninstalled
 109     else
 110     ##UNINSTONLYEND
 111         # Adding -I/usr/include to CXXFLAGS causes problems with certain
 112         # versions of GCC on some platforms where GCC generates "fixed"
 113         # versions of vendor supplied include headers at install time.
 114         # Normally these are used instead of those in /usr/include, but if
 115         # you explicitly pass -I/usr/include you get the non-fixed
 116         # versions.  More recent GCC versions simply ignore -I/usr/include
 117         # but we want to support older versions too.
 118         case "@incdir@" in
 119         /usr/include|/usr/include/c++) I= ;;
 120         *) I="-I@incdir@" ;;
 121         esac
 122     ##UNINSTONLYBEGIN
 123     fi
 124     ##UNINSTONLYEND
 125 }
 126
 127 set_I_swig() {
 128     ##UNINSTONLYBEGIN
 129     if is_uninstalled ; then
 130         set_I_for_uninstalled
 131     else
 132     ##UNINSTONLYEND
 133         I="-I@incdir@"
 134     ##UNINSTONLYBEGIN
 135     fi
 136     ##UNINSTONLYEND
 137 }
 138
 139 # Extract dlname from a libtool .la file.
 140 extract_dlname() {
 141     dlname=
 142     # Need to quote ^ for Solaris /bin/sh.
 143     assignment=`grep '^dlname=' "$1" 2>/dev/null`
 144     eval "$assignment"
 145 }
 146
 147 # Extract dependency_libs recursively from a libtool .la file, converting
 148 # .la references into appropriate -L and -l options.
 149 extract_dependency_libs() {
 150     deps=
 151     # Multiple whitespace (space or tab).
 152     mws='[       ][      ]*'
 153     la='\(/[^ ]*\)\(/lib\)\([^ ]*\).la'
 154     pat='\(.* \)'"$la"'\( .*\)'
 155     extract_dependency_libs_ "$1"
 156     dependency_libs=`echo "$deps"|sed 's/  */ /g;s/^ //;s/ $//'`
 157 }
 158
 159 # Internal helper function for extract_dependency_libs.
 160 extract_dependency_libs_() {
 161     dependency_libs=
 162     # Need to quote ^ for Solaris /bin/sh.
 163     assignment=`grep '^dependency_libs=' "$1" 2>/dev/null`
 164     eval "$assignment"
 165     dependency_libs=`echo " $dependency_libs "|sed "s/$mws/ /g"`
 166     while true ; do
 167         file=`echo "$dependency_libs"|sed "s,$pat"',\2\3\4.la,'`
 168         case $file in
 169         *.la)
 170             # Replace "/path/to/libfoo.la" with "-L/path/to -lfoo".
 171             deps="$deps "`echo "$dependency_libs"|sed "s,$pat"',\1-L\2 -l\4,'`
 172             # Put the trailing part in $1 which is a local variable.
 173             set "`echo "$dependency_libs"|sed "s,$pat"',\5,'`"
 174             # And expand any dependency libs from libfoo.la.
 175             extract_dependency_libs_ "$file"
 176             # Set dependency_libs to the trailing part, ready for the
 177             # next pass of the loop which checks for more .la files.
 178             dependency_libs=$1
 179             ;;
 180         *)
 181             deps=$deps$dependency_libs
 182             break
 183             ;;
 184         esac
 185     done
 186 }
 187
 188 builddir=`echo "$0"|sed 's![^/]*$!!'`
 189 xo_lib_xapianletor=no
 190 static=no
 191
 192 actions=
 193 while [ 0 != "$#" ] ; do
 194     arg=$1
 195     shift
 196     case $arg in
 197     --help)
 198         echo "$PROG_NAME - $PROG_DESC"
 199         echo
 200         show_usage 0
 201         ;;
 202
 203     --version)
 204         echo "$PROG_NAME - @PACKAGE_STRING@"
 205         exit 0
 206         ;;
 207
 208     --cxxflags|--swigflags|--libs|--ltlibs)
 209         actions="$actions $arg"
 210         ;;
 211
 212     --static)
 213         static=yes
 214         ;;
 215
 216     --from-xo-lib-xapianletor)
 217         # Top Secret option which allows us to give a more helpful error
 218         # message if we're asked to link with an uninstalled libxapianletor
 219         # and libtool isn't in use.
 220         xo_lib_xapianletor=yes
 221         ;;
 222
 223     -*)
 224         echo "$0: Unrecognized option: $arg" 1>&2
 225         show_usage 1 1>&2
 226         ;;
 227
 228     *)
 229         show_usage 1 1>&2
 230         ;;
 231     esac
 232 done
 233
 234 for arg in $actions ; do
 235     case $arg in
 236     --cxxflags)
 237         set_I
 238         F=
 239         [ -n "@abi_affecting_cxxflags@" ] && F="@abi_affecting_cxxflags@ "
 240         echo "$I$F"
 241         ;;
 242
 243     --swigflags)
 244         set_I_swig
 245         echo "$I"
 246         ;;
 247
 248     --libs)
 249         ##UNINSTONLYBEGIN
 250         if is_uninstalled ; then
 251             if [ no = "$xo_lib_xapianletor" ]; then
 252                 echo "$0: Use libtool and '$PROG_NAME --ltlibs'" 1>&2
 253             else
 254                 configure_ac='configure.in (or configure.ac)'
 255                 # If ac_top_srcdir isn't passed to us, we just end up looking
 256                 # in the current directory, which is a sensible fallback.
 257                 if [ -r "${ac_top_srcdir}configure.ac" ]; then
 258                     configure_ac=configure.ac
 259                 elif [ -r "${ac_top_srcdir}configure.in" ]; then
 260                     configure_ac=configure.in
 261                 fi
 262                 echo "$0: Add AC_PROG_LIBTOOL to your $configure_ac" 1>&2
 263             fi
 264             echo "to link with an uninstalled libxapianletor." 1>&2
 265             exit 1
 266         fi
 267         ##UNINSTONLYEND
 268         set_L_to_library_path
 269         D=
 270         if need_explicit_dependencies ; then
 271             extract_dependency_libs "@libdir@/libxapianletor.la"
 272             [ -n "$dependency_libs" ] && D=" $dependency_libs"
 273         fi
 274         echo "$L -lxapianletor$D"
 275         ;;
 276
 277     --ltlibs)
 278         ##UNINSTONLYBEGIN
 279         if is_uninstalled ; then
 280             # Don't check if libxapianletor.la exists yet since we want to allow
 281             # configuring against a xapian-letor tree which hasn't been built
 282             # yet (the top level bootstrap script relies on this).
 283             [ ./ != "$builddir" ] && F="$F$builddir"
 284             [ no = "$static" ] || F="-static-libtool-libs $F"
 285             echo "${F}libxapianletor.la"
 286             continue
 287         fi
 288         ##UNINSTONLYEND
 289
 290         # If we need to pull in dependency_libs, we need libxapianletor.la.
 291         # Otherwise just use the appropriate -L and -l options.
 292         # Upstream libtool currently never sets link_all_deplibs_CXX=no.
 293         # Some Linux distros patch libtool to return no, and some have an
 294         # unhelpful policy of not packaging .la files in an attempt to work
 295         # around this.  So avoiding using libtool here gives more consistent
 296         # behaviour.
 297         if need_explicit_dependencies ; then
 298             if [ -f "@libdir@/libxapianletor.la" ]; then
 299                 echo "@libdir@/libxapianletor.la"
 300                 continue
 301             fi
 302
 303             echo "$0: Can't find libxapianletor.la to link against." 1>&2
 304             exit 1
 305         fi
 306
 307         set_L_to_library_path
 308         echo "$L -lxapianletor"
 309         ;;
 310     esac
 311 done
 312 exit 0