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dnl @synopsis CHECK_PNGDRIVER()
dnl
dnl This macro searches for an installed png/gd/zlib library. If nothing
dnl was specified when calling configure, it searches first in /usr/local
dnl and then in /usr. If the --with-pngdriver=DIR is specified, it will try
dnl to find it in DIR/include/zlib.h and DIR/lib/libz.a. If --without-pngdriver
dnl is specified, the library is not searched at all.
dnl
dnl It defines the symbol PLD_png if the librarys are found. You should
dnl use autoheader to include a definition for this symbol in a config.h
dnl file.
dnl
dnl Sources files should then use something like
dnl
dnl #ifdef PLD_png
dnl #include <zlib.h>
dnl #endif /* PLD_png */
dnl
dnl @author Ian Longden <il@sanger.ac.uk>
dnl Modified: Alan Bleasby. Corrected library order
dnl
AC_DEFUN([CHECK_PNGDRIVER],
#
# Handle user hints
#
[AC_MSG_CHECKING([if png driver is wanted])
AC_ARG_WITH([pngdriver],
[AS_HELP_STRING([--with-pngdriver=@<:@DIR@:>@],
[root directory path of png/gd/zlib installation (defaults to /usr)])],
[if test "$withval" != no ; then
AC_MSG_RESULT([yes])
ALT_HOME="$withval"
else
AC_MSG_RESULT([no])
fi], [
AC_MSG_RESULT([yes])
ALT_HOME=/usr
])
#
# Locate png/gd/zlib, if wanted
#
if test -d "${ALT_HOME}"
then
#
# Keep a copy if it fails
#
ALT_LDFLAGS="$LDFLAGS"
ALT_CPPFLAGS="$CPPFLAGS"
#
# Set
#
LDFLAGS="${LDFLAGS} -L${ALT_HOME}/lib"
CPPFLAGS="$CPPFLAGS -I$ALT_HOME/include"
ICCHECK=0
case $host_os in
solaris*)
AC_CHECK_LIB(iconv, libiconv_close, ICCHECK=1, ICCHECK=0, -L${ALT_HOME}/lib -liconv)
if test $ICCHECK = "1" ; then
LDFLAGS="${LDFLAGS} -L${ALT_HOME}/lib -liconv"
fi
LDFLAGS="$LDFLAGS -R$ALT_HOME/lib"
;;
esac
#
# Check for zlib in ALT_HOME
#
AC_CHECK_LIB(z, inflateEnd, CHECK=1, CHECK=0, -L${ALT_HOME}/lib -lz)
#
#
# Check for png
#
if test $CHECK = "1" ; then
AC_CHECK_LIB(png, png_destroy_read_struct, CHECK=1, CHECK=0 , -L${ALT_HOME}/lib -lz)
fi
#
# Check for gd
#
if test $CHECK = "1"; then
AC_CHECK_LIB(gd, gdImageCreateFromPng, CHECK=1, CHECK=0 , -L${ALT_HOME}/lib -lgd -lpng -lz -lm)
if test $CHECK = "0"; then
echo need to upgrade gd for png driver for plplot
fi
fi
#
# If everything found okay then proceed to include png driver in config.
#
if test $CHECK = "1" ; then
LIBS="$LIBS -lgd -lpng -lz -lm"
if test $ICCHECK = "1" ; then
LIBS="$LIBS -liconv"
fi
case $host_os in
solaris*)
LDFLAGS="$LDFLAGS -R$ALT_HOME/lib"
;;
esac
AC_DEFINE([PLD_png], [1], [Define to 1 is PNG support is available])
AM_CONDITIONAL(AMPNG, true)
echo PNG libraries found
if test $ALT_HOME = "/usr" ; then
LDFLAGS="$ALT_LDFLAGS"
CPPFLAGS="$ALT_CPPFLAGS"
fi
else
#
# If not okay then reset FLAGS.
#
AM_CONDITIONAL(AMPNG, false)
LDFLAGS="$ALT_LDFLAGS"
CPPFLAGS="$ALT_CPPFLAGS"
echo No png driver will be made due to librarys missing/old.
fi
# echo PNG STUFF FOLLOWS!!!
# echo CHECK = $CHECK
# echo LIBS = $LIBS
# echo LDFLAGS = $LDFLAGS
# echo CPPFLAGS = $CPPFLAGS
else
if test $withval != "no"; then
echo "Directory $ALT_HOME does not exist"
exit 0
fi
fi
])
|
