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Filename : libpng-config
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#! /bin/sh

# libpng-config
# provides configuration info for libpng.

# Copyright (C) 2002, 2004, 2006, 2007 Glenn Randers-Pehrson

# This code is released under the libpng license.
# For conditions of distribution and use, see the disclaimer
# and license in png.h

# Modeled after libxml-config.

version=`pkg-config --modversion libpng`
prefix=`pkg-config --variable prefix libpng`
exec_prefix=`pkg-config --variable exec_prefix libpng`
libdir=`pkg-config --variable libdir libpng`
includedir=`pkg-config --variable includedir libpng`
libs="-lpng15"
all_libs="-lpng15 -lm -lz -lm "
I_opts="-I${includedir}"
L_opts="-L${libdir}"
R_opts=""
cppflags=""
ccopts=""
ldopts=""

usage()
{
    cat <<EOF
Usage: $0 [OPTION] ...

Known values for OPTION are:

  --prefix        print libpng prefix
  --libdir        print path to directory containing library
  --libs          print library linking information
  --ccopts        print compiler options
  --cppflags      print pre-processor flags
  --cflags        print preprocessor flags, I_opts, and compiler options
  --I_opts        print "-I" include options
  --L_opts        print linker "-L" flags for dynamic linking
  --R_opts        print dynamic linker "-R" or "-rpath" flags
  --ldopts        print linker options
  --ldflags       print linker flags (ldopts, L_opts, R_opts, and libs)
  --static        revise subsequent outputs for static linking
  --help          print this help and exit
  --version       print version information
EOF

    exit $1
}

if test $# -eq 0; then
    usage 1
fi

while test $# -gt 0; do
    case "$1" in

    --prefix)
        echo ${prefix}
        ;;

    --version)
        echo ${version}
        exit 0
        ;;

    --help)
        usage 0
        ;;

    --ccopts)
        echo ${ccopts}
        ;;

    --cppflags)
        echo ${cppflags}
        ;;

    --cflags)
        echo ${I_opts} ${cppflags} ${ccopts}
        ;;

    --libdir)
        echo ${libdir}
        ;;

    --libs)
        echo ${libs}
        ;;

    --I_opts)
        echo ${I_opts}
        ;;

    --L_opts)
        echo ${L_opts}
        ;;

    --R_opts)
        echo ${R_opts}
        ;;

    --ldopts)
        echo ${ldopts}
        ;;

    --ldflags)
        echo ${ldopts} ${L_opts} ${R_opts} ${libs}
        ;;

    --static)
        R_opts=""
        libs=${all_libs}
        ;;

    *)
        usage
        exit 1
        ;;
    esac
    shift
done

exit 0