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dnl
dnl Copyright 2007,2008 Free Software Foundation, Inc.
dnl
dnl This file is part of GNU Radio
dnl
dnl GNU Radio is free software; you can redistribute it and/or modify
dnl it under the terms of the GNU General Public License as published by
dnl the Free Software Foundation; either version 3, or (at your option)
dnl any later version.
dnl
dnl GNU Radio is distributed in the hope that it will be useful,
dnl but WITHOUT ANY WARRANTY; without even the implied warranty of
dnl MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
dnl GNU General Public License for more details.
dnl
dnl You should have received a copy of the GNU General Public License
dnl along with GNU Radio; see the file COPYING. If not, write to
dnl the Free Software Foundation, Inc., 51 Franklin Street,
dnl Boston, MA 02110-1301, USA.
dnl
dnl Configure paths for library qwt.
dnl
dnl GR_QWT([ACTION-IF-FOUND [, ACTION-IF-NOT-FOUND]])
dnl
dnl Test for library qwt, set QWT_CFLAGS and QWT_LIBS if found. Assumes
dnl QT_CFLAGS and QT_LIBS have already been correctly set.
dnl
AC_DEFUN([GR_QWT],
[
dnl QWT Library Version
QWT_LIBRARY1=-lqwt-qt4
QWT_LIBRARY2=-lqwt
dnl Save the environment
AC_LANG_PUSH(C++)
qwt_save_CPPFLAGS="$CPPFLAGS"
qwt_save_LIBS="$LIBS"
libqwt_ok=yes
dnl QWT Info
dnl Allow user to specify where QWT files are
AC_ARG_WITH([qwt-libdir],
[ --with-qwt-libdir=path Prefix where QWT library is installed (optional)],
[qwt_libdir="$withval"], [qwt_libdir=""])
AC_ARG_WITH([qwt-incdir],
[ --with-qwt-incdir=path Prefix where QWT include files are (optional)],
[qwt_incdir="$withval"], [qwt_incdir=""])
AC_ARG_WITH([qwt-lib],
[ --with-qwt-lib=library QWT library name (optional)],
[qwt_lib="$withval"], [qwt_lib=""])
dnl Check for presence of header files
dnl if not user-specified, try the first include dir (Ubuntu), then
dnl try the second include dir (Fedora)
CPPFLAGS="$CPPFLAGS $QTCORE_CFLAGS"
dnl if not set by user
if test "$qwt_incdir" = "" ; then
dnl check qwt-qt4/qwt.h (as in Ubuntu)
AC_CHECK_HEADER(
[qwt-qt4/qwt_math.h],
[qwt_qt4_qwt_h=yes],
[qwt_qt4_qwt_h=no]
)
dnl If it was found, set the flags and move on
if test "$qwt_qt4_qwt_h" = "yes" ; then
QWT_CFLAGS="$QWT_CFLAGS -I/usr/include/qwt-qt4"
else
dnl check qwt/qwt.h (as in Fedora)
AC_CHECK_HEADER(
[qwt/qwt_math.h],
[qwt_qwt_h=yes],
[qwt_qwt_h=no]
)
dnl if it was found, set the flags and move on
if test "$qwt_qwt_h" = "yes" ; then
QWT_CFLAGS="$QWT_CFLAGS -I/usr/include/qwt"
else
dnl otherwise, qwt.h wasn't found, so set the flag to no
libqwt_ok=no
fi
fi
else
dnl Using the user-specified include directory
QWT_CFLAGS="$QWT_CFLAGS -I$qwt_incdir"
AC_CHECK_HEADER(
[$qwt_incdir/qwt.h],
[],
[libqwt_ok=no])
fi
dnl Don't bother going on if we can't find the headers
if test "$libqwt_ok" = "yes" ; then
dnl Check for QWT library (qwt or qwt-qt4)
dnl User-defined QWT library path
if test "$qwt_libdir" != "" ; then
QWT_LIBS="-L$qwt_libdir $QWT_LIBS"
fi
dnl temporarily set these so the AC_CHECK_LIB works
CPPFLAGS="$CPPFLAGS $QWT_CFLAGS"
LIBS="$qwt_save_LIBS $QT_LIBS $QWT_LIBS -lqwt"
dnl If the user specified a qwt library name, use it here
if test "$qwt_lib" != "" ; then
AC_CHECK_LIB([$qwt_lib], [main], [libqwt_ok=yes], [libqwt_ok=no])
else
dnl Check for 'main' in libqwt (Fedora)
AC_CHECK_LIB([qwt], [main], [libqwt_ok=yes], [libqwt_ok=no])
dnl If library found properly, set the flag and move on
if test "$libqwt_ok" = "yes" ; then
QWT_LIBS="$QWT_LIBS -lqwt"
else
dnl Otherwise, check for 'main' in libqwt-qt4 (Ubuntu)
LIBS="$qwt_save_LIBS $QT_LIBS $QWT_LIBS -lqwt-qt4"
AC_CHECK_LIB([qwt-qt4], [main], [libqwt_ok=yes], [libqwt_ok=no])
if test "$libqwt_ok" = "yes" ; then
QWT_LIBS="$QWT_LIBS -lqwt-qt4"
else
AC_MSG_RESULT([Could not link to libqwt.so])
fi
fi
fi
else
AC_MSG_RESULT([Could not find qwt headers])
fi
dnl Restore saved variables
LIBS="$qwt_save_LIBS"
CPPFLAGS="$qwt_save_CPPFLAGS"
AC_LANG_POP
dnl Execute user actions
if test "x$libqwt_ok" = "xyes" ; then
ifelse([$1], , :, [$1])
else
QWT_CFLAGS=""
QWT_LIBDIRS=""
ifelse([$2], , :, [$2])
fi
dnl Export our variables
AC_SUBST(QWT_CFLAGS)
AC_SUBST(QWT_LIBS)
])
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