Houston, we have a trunk.

git-svn-id: http://gnuradio.org/svn/gnuradio/trunk@3122 221aa14e-8319-0410-a670-987f0aec2ac5

1 files changed, 404 insertions, 0 deletions

diff --git a/gr-howto-write-a-block/config/bnv_have_qt.m4 b/gr-howto-write-a-block/config/bnv_have_qt.m4
new file mode 100644
index 000000000..1469bfbfd
--- /dev/null
+++ b/gr-howto-write-a-block/config/bnv_have_qt.m4
@@ -0,0 +1,404 @@
+dnl Available from the GNU Autoconf Macro Archive at:
+dnl http://www.gnu.org/software/ac-archive/htmldoc/bnv_have_qt.html
+dnl
+AC_DEFUN([BNV_HAVE_QT],
+[
+  dnl THANKS! This code includes bug fixes by:
+  dnl Tim McClarren.
+
+  AC_REQUIRE([AC_PROG_CXX])
+  AC_REQUIRE([AC_PATH_X])
+  AC_REQUIRE([AC_PATH_XTRA])
+
+  AC_MSG_CHECKING(for Qt)
+
+  AC_ARG_WITH([Qt-dir],
+    [  --with-Qt-dir=DIR       DIR is equal to \$QTDIR if you have followed the
+                          installation instructions of Trolltech. Header
+                          files are in DIR/include, binary utilities are
+                          in DIR/bin and the library is in DIR/lib])
+  AC_ARG_WITH([Qt-include-dir],
+    [  --with-Qt-include-dir=DIR
+                          Qt header files are in DIR])
+  AC_ARG_WITH([Qt-bin-dir],
+    [  --with-Qt-bin-dir=DIR   Qt utilities such as moc and uic are in DIR])
+  AC_ARG_WITH([Qt-lib-dir],
+    [  --with-Qt-lib-dir=DIR   The Qt library is in DIR])
+  AC_ARG_WITH([Qt-lib],
+    [  --with-Qt-lib=LIB       Use -lLIB to link with the Qt library])
+  if test x"$with_Qt_dir" = x"no" ||
+     test x"$with_Qt_include-dir" = x"no" ||
+     test x"$with_Qt_bin_dir" = x"no" ||
+     test x"$with_Qt_lib_dir" = x"no" ||
+     test x"$with_Qt_lib" = x"no"; then
+    # user disabled Qt. Leave cache alone.
+    have_qt="User disabled Qt."
+  else
+    # "yes" is a bogus option
+    if test x"$with_Qt_dir" = xyes; then
+      with_Qt_dir=
+    fi
+    if test x"$with_Qt_include_dir" = xyes; then
+      with_Qt_include_dir=
+    fi
+    if test x"$with_Qt_bin_dir" = xyes; then
+      with_Qt_bin_dir=
+    fi
+    if test x"$with_Qt_lib_dir" = xyes; then
+      with_Qt_lib_dir=
+    fi
+    if test x"$with_Qt_lib" = xyes; then
+      with_Qt_lib=
+    fi
+    # No Qt unless we discover otherwise
+    have_qt=no
+    # Check whether we are requested to link with a specific version
+    if test x"$with_Qt_lib" != x; then
+      bnv_qt_lib="$with_Qt_lib"
+    fi
+    # Check whether we were supplied with an answer already
+    if test x"$with_Qt_dir" != x; then
+      have_qt=yes
+      bnv_qt_dir="$with_Qt_dir"
+      bnv_qt_include_dir="$with_Qt_dir/include"
+      bnv_qt_bin_dir="$with_Qt_dir/bin"
+      bnv_qt_lib_dir="$with_Qt_dir/lib"
+      # Only search for the lib if the user did not define one already
+      if test x"$bnv_qt_lib" = x; then
+        bnv_qt_lib="`ls $bnv_qt_lib_dir/libqt* | sed -n 1p |
+                     sed s@$bnv_qt_lib_dir/lib@@ | [sed s@[.].*@@]`"
+      fi
+      bnv_qt_LIBS="-L$bnv_qt_lib_dir -l$bnv_qt_lib $X_PRE_LIBS $X_LIBS -lX11 -lXext -lXmu -lXt -lXi $X_EXTRA_LIBS"
+    else
+      # Use cached value or do search, starting with suggestions from
+      # the command line
+      AC_CACHE_VAL(bnv_cv_have_qt,
+      [
+        # We are not given a solution and there is no cached value.
+        bnv_qt_dir=NO
+        bnv_qt_include_dir=NO
+        bnv_qt_lib_dir=NO
+        if test x"$bnv_qt_lib" = x; then
+          bnv_qt_lib=NO
+        fi
+        BNV_PATH_QT_DIRECT
+        if test "$bnv_qt_dir" = NO ||
+           test "$bnv_qt_include_dir" = NO ||
+           test "$bnv_qt_lib_dir" = NO ||
+           test "$bnv_qt_lib" = NO; then
+          # Problem with finding complete Qt.  Cache the known absence of Qt.
+          bnv_cv_have_qt="have_qt=no"
+        else
+          # Record where we found Qt for the cache.
+          bnv_cv_have_qt="have_qt=yes                  \
+                       bnv_qt_dir=$bnv_qt_dir          \
+               bnv_qt_include_dir=$bnv_qt_include_dir  \
+                   bnv_qt_bin_dir=$bnv_qt_bin_dir      \
+                      bnv_qt_LIBS=\"$bnv_qt_LIBS\""
+        fi
+      ])dnl
+      eval "$bnv_cv_have_qt"
+    fi # all $bnv_qt_* are set
+  fi   # $have_qt reflects the system status
+  if test x"$have_qt" = xyes; then
+    QT_CXXFLAGS="-I$bnv_qt_include_dir"
+    QT_DIR="$bnv_qt_dir"
+    QT_LIBS="$bnv_qt_LIBS"
+    # If bnv_qt_dir is defined, utilities are expected to be in the
+    # bin subdirectory
+    if test x"$bnv_qt_dir" != x; then
+        if test -x "$bnv_qt_dir/bin/uic"; then
+          QT_UIC="$bnv_qt_dir/bin/uic"
+        else
+          # Old versions of Qt don't have uic
+          QT_UIC=
+        fi
+      QT_MOC="$bnv_qt_dir/bin/moc"
+    else
+      # Or maybe we are told where to look for the utilities
+      if test x"$bnv_qt_bin_dir" != x; then
+        if test -x "$bnv_qt_bin_dir/uic"; then
+          QT_UIC="$bnv_qt_bin_dir/uic"
+        else
+          # Old versions of Qt don't have uic
+          QT_UIC=
+        fi
+        QT_MOC="$bnv_qt_bin_dir/moc"
+      else
+      # Last possibility is that they are in $PATH
+        QT_UIC="`which uic`"
+        QT_MOC="`which moc`"
+      fi
+    fi
+    # All variables are defined, report the result
+    AC_MSG_RESULT([$have_qt:
+    QT_CXXFLAGS=$QT_CXXFLAGS
+    QT_DIR=$QT_DIR
+    QT_LIBS=$QT_LIBS
+    QT_UIC=$QT_UIC
+    QT_MOC=$QT_MOC])
+  else
+    # Qt was not found
+    QT_CXXFLAGS=
+    QT_DIR=
+    QT_LIBS=
+    QT_UIC=
+    QT_MOC=
+    AC_MSG_RESULT($have_qt)
+  fi
+  AC_SUBST(QT_CXXFLAGS)
+  AC_SUBST(QT_DIR)
+  AC_SUBST(QT_LIBS)
+  AC_SUBST(QT_UIC)
+  AC_SUBST(QT_MOC)
+
+  #### Being paranoid:
+  if test x"$have_qt" = xyes; then
+    AC_MSG_CHECKING(correct functioning of Qt installation)
+    AC_CACHE_VAL(bnv_cv_qt_test_result,
+    [
+      cat > bnv_qt_test.h << EOF
+#include <qobject.h>
+class Test : public QObject
+{
+Q_OBJECT
+public:
+  Test() {}
+  ~Test() {}
+public slots:
+  void receive() {}
+signals:
+  void send();
+};
+EOF
+
+      cat > bnv_qt_main.$ac_ext << EOF
+#include "bnv_qt_test.h"
+#include <qapplication.h>
+int main( int argc, char **argv )
+{
+  QApplication app( argc, argv );
+  Test t;
+  QObject::connect( &t, SIGNAL(send()), &t, SLOT(receive()) );
+}
+EOF
+
+      bnv_cv_qt_test_result="failure"
+      bnv_try_1="$QT_MOC bnv_qt_test.h -o moc_bnv_qt_test.$ac_ext >/dev/null 2>bnv_qt_test_1.out"
+      AC_TRY_EVAL(bnv_try_1)
+      bnv_err_1=`grep -v '^ *+' bnv_qt_test_1.out | grep -v "^bnv_qt_test.h\$"`
+      if test x"$bnv_err_1" != x; then
+        echo "$bnv_err_1" >&AC_FD_CC
+        echo "configure: could not run $QT_MOC on:" >&AC_FD_CC
+        cat bnv_qt_test.h >&AC_FD_CC
+      else
+        bnv_try_2="$CXX $QT_CXXFLAGS -c $CXXFLAGS -o moc_bnv_qt_test.o moc_bnv_qt_test.$ac_ext >/dev/null 2>bnv_qt_test_2.out"
+        AC_TRY_EVAL(bnv_try_2)
+        bnv_err_2=`grep -v '^ *+' bnv_qt_test_2.out | grep -v "^bnv_qt_test.{$ac_ext}\$"`
+        if test x"$bnv_err_2" != x; then
+          echo "$bnv_err_2" >&AC_FD_CC
+          echo "configure: could not compile:" >&AC_FD_CC
+          cat bnv_qt_test.$ac_ext >&AC_FD_CC
+        else
+          bnv_try_3="$CXX $QT_CXXFLAGS -c $CXXFLAGS -o bnv_qt_main.o bnv_qt_main.$ac_ext >/dev/null 2>bnv_qt_test_3.out"
+          AC_TRY_EVAL(bnv_try_3)
+          bnv_err_3=`grep -v '^ *+' bnv_qt_test_3.out | grep -v "^bnv_qt_main.{$ac_ext}\$"`
+          if test x"$bnv_err_3" != x; then
+            echo "$bnv_err_3" >&AC_FD_CC
+            echo "configure: could not compile:" >&AC_FD_CC
+            cat bnv_qt_main.$ac_ext >&AC_FD_CC
+          else
+            bnv_try_4="$CXX $QT_LIBS $LIBS -o bnv_qt_main bnv_qt_main.o moc_bnv_qt_test.o >/dev/null 2>bnv_qt_test_4.out"
+            AC_TRY_EVAL(bnv_try_4)
+            bnv_err_4=`grep -v '^ *+' bnv_qt_test_4.out`
+            if test x"$bnv_err_4" != x; then
+              echo "$bnv_err_4" >&AC_FD_CC
+            else
+              bnv_cv_qt_test_result="success"
+            fi
+          fi
+        fi
+      fi
+    ])dnl AC_CACHE_VAL bnv_cv_qt_test_result
+    AC_MSG_RESULT([$bnv_cv_qt_test_result]);
+    if test x"$bnv_cv_qt_test_result" = "xfailure"; then
+      # working Qt was not found
+      QT_CXXFLAGS=
+      QT_DIR=
+      QT_LIBS=
+      QT_UIC=
+      QT_MOC=
+      have_qt=no
+      AC_MSG_WARN([Failed to find matching components of a complete
+                  Qt installation. Try using more options,
+                  see ./configure --help.])
+    fi
+
+    rm -f bnv_qt_test.h moc_bnv_qt_test.$ac_ext moc_bnv_qt_test.o \
+          bnv_qt_main.$ac_ext bnv_qt_main.o bnv_qt_main \
+          bnv_qt_test_1.out bnv_qt_test_2.out bnv_qt_test_3.out bnv_qt_test_4.out
+  fi
+])
+
+dnl Internal subroutine of BNV_HAVE_QT
+dnl Set bnv_qt_dir bnv_qt_include_dir bnv_qt_bin_dir bnv_qt_lib_dir bnv_qt_lib
+dnl Copyright 2001 Bastiaan N. Veelo <Bastiaan.N.Veelo@immtek.ntnu.no>
+AC_DEFUN([BNV_PATH_QT_DIRECT],
+[
+  ## Binary utilities ##
+  if test x"$with_Qt_bin_dir" != x; then
+    bnv_qt_bin_dir=$with_Qt_bin_dir
+  fi
+  ## Look for header files ##
+  if test x"$with_Qt_include_dir" != x; then
+    bnv_qt_include_dir="$with_Qt_include_dir"
+  else
+    # The following header file is expected to define QT_VERSION.
+    qt_direct_test_header=qglobal.h
+    # Look for the header file in a standard set of common directories.
+    bnv_include_path_list="
+      /usr/include
+      `ls -dr /usr/include/qt* 2>/dev/null`
+      `ls -dr /usr/lib/qt*/include 2>/dev/null`
+      `ls -dr /usr/local/qt*/include 2>/dev/null`
+      `ls -dr /opt/qt*/include 2>/dev/null`
+    "
+    for bnv_dir in $bnv_include_path_list; do
+      if test -r "$bnv_dir/$qt_direct_test_header"; then
+        bnv_dirs="$bnv_dirs $bnv_dir"
+      fi
+    done
+    # Now look for the newest in this list
+    bnv_prev_ver=0
+    for bnv_dir in $bnv_dirs; do
+      bnv_this_ver=`egrep -w '#define QT_VERSION' $bnv_dir/$qt_direct_test_header | sed s/'#define QT_VERSION'//`
+      if expr $bnv_this_ver '>' $bnv_prev_ver > /dev/null; then
+        bnv_qt_include_dir=$bnv_dir
+        bnv_prev_ver=$bnv_this_ver
+      fi
+    done
+  fi dnl Found header files.
+
+  # Are these headers located in a traditional Trolltech installation?
+  # That would be $bnv_qt_include_dir stripped from its last element:
+  bnv_possible_qt_dir=`dirname $bnv_qt_include_dir`
+  if test -x $bnv_possible_qt_dir/bin/moc &&
+     ls $bnv_possible_qt_dir/lib/libqt* > /dev/null; then
+    # Then the rest is a piece of cake
+    bnv_qt_dir=$bnv_possible_qt_dir
+    bnv_qt_bin_dir="$bnv_qt_dir/bin"
+    bnv_qt_lib_dir="$bnv_qt_dir/lib"
+    # Only look for lib if the user did not supply it already
+    if test x"$bnv_qt_lib" = xNO; then
+      bnv_qt_lib="`ls $bnv_qt_lib_dir/libqt* | sed -n 1p |
+                   sed s@$bnv_qt_lib_dir/lib@@ | [sed s@[.].*@@]`"
+    fi
+    bnv_qt_LIBS="-L$bnv_qt_lib_dir -l$bnv_qt_lib $X_PRE_LIBS $X_LIBS -lX11 -lXext -lXmu -lXt -lXi $X_EXTRA_LIBS"
+  else
+    # There is no valid definition for $QTDIR as Trolltech likes to see it
+    bnv_qt_dir=
+    ## Look for Qt library ##
+    if test x"$with_Qt_lib_dir" != x; then
+      bnv_qt_lib_dir="$with_Qt_lib_dir"
+      # Only look for lib if the user did not supply it already
+      if test x"$bnv_qt_lib" = xNO; then
+        bnv_qt_lib="`ls $bnv_qt_lib_dir/libqt* | sed -n 1p |
+                     sed s@$bnv_qt_lib_dir/lib@@ | [sed s@[.].*@@]`"
+      fi
+      bnv_qt_LIBS="-L$bnv_qt_lib_dir -l$bnv_qt_lib $X_PRE_LIBS $X_LIBS -lX11 -lXext -lXmu -lXt -lXi $X_EXTRA_LIBS"
+    else
+      # Normally, when there is no traditional Trolltech installation,
+      # the library is installed in a place where the linker finds it
+      # automatically.
+      # If the user did not define the library name, try with qt
+      if test x"$bnv_qt_lib" = xNO; then
+        bnv_qt_lib=qt
+      fi
+      qt_direct_test_header=qapplication.h
+      qt_direct_test_main="
+        int argc;
+        char ** argv;
+        QApplication app(argc,argv);
+      "
+      # See if we find the library without any special options.
+      # Don't add top $LIBS permanently yet
+      bnv_save_LIBS="$LIBS"
+      LIBS="-l$bnv_qt_lib $X_PRE_LIBS $X_LIBS -lX11 -lXext -lXmu -lXt -lXi $X_EXTRA_LIBS"
+      bnv_qt_LIBS="$LIBS"
+      bnv_save_CXXFLAGS="$CXXFLAGS"
+      CXXFLAGS="-I$bnv_qt_include_dir"
+      AC_TRY_LINK([#include <$qt_direct_test_header>],
+        $qt_direct_test_main,
+      [
+        # Success.
+        # We can link with no special library directory.
+        bnv_qt_lib_dir=
+      ], [
+        # That did not work. Try the multi-threaded version
+        echo "Non-critical error, please neglect the above." >&AC_FD_CC
+        bnv_qt_lib=qt-mt
+        LIBS="-l$bnv_qt_lib $X_PRE_LIBS $X_LIBS -lX11 -lXext -lXmu -lXt -lXi $X_EXTRA_LIBS"
+        AC_TRY_LINK([#include <$qt_direct_test_header>],
+          $qt_direct_test_main,
+        [
+          # Success.
+          # We can link with no special library directory.
+          bnv_qt_lib_dir=
+        ], [
+          # That did not work. Try the OpenGL version
+          echo "Non-critical error, please neglect the above." >&AC_FD_CC
+          bnv_qt_lib=qt-gl
+          LIBS="-l$bnv_qt_lib $X_PRE_LIBS $X_LIBS -lX11 -lXext -lXmu -lXt -lXi $X_EXTRA_LIBS"
+          AC_TRY_LINK([#include <$qt_direct_test_header>],
+            $qt_direct_test_main,
+          [
+            # Succes.
+            # We can link with no special library directory.
+            bnv_qt_lib_dir=
+          ], [
+            # That did not work. Maybe a library version I don't know about?
+            echo "Non-critical error, please neglect the above." >&AC_FD_CC
+            # Look for some Qt lib in a standard set of common directories.
+            bnv_dir_list="
+              `echo $bnv_qt_includes | sed ss/includess`
+              /lib
+              /usr/lib
+              /usr/local/lib
+              /opt/lib
+              `ls -dr /usr/lib/qt* 2>/dev/null`
+              `ls -dr /usr/local/qt* 2>/dev/null`
+              `ls -dr /opt/qt* 2>/dev/null`
+            "
+            for bnv_dir in $bnv_dir_list; do
+              if ls $bnv_dir/libqt*; then
+                # Gamble that it's the first one...
+                bnv_qt_lib="`ls $bnv_dir/libqt* | sed -n 1p |
+                            sed s@$bnv_dir/lib@@ | sed s/[.].*//`"
+                bnv_qt_lib_dir="$bnv_dir"
+                break
+              fi
+            done
+            # Try with that one
+            LIBS="-l$bnv_qt_lib $X_PRE_LIBS $X_LIBS -lX11 -lXext -lXmu -lXt -lXi $X_EXTRA_LIBS"
+            AC_TRY_LINK([#include <$qt_direct_test_header>],
+              $qt_direct_test_main,
+            [
+              # Succes.
+              # We can link with no special library directory.
+              bnv_qt_lib_dir=
+            ], [
+              # Leave bnv_qt_lib_dir defined
+            ])
+          ])
+        ])
+      ])
+      if test x"$bnv_qt_lib_dir" != x; then
+        bnv_qt_LIBS="-l$bnv_qt_lib_dir $LIBS"
+      else
+        bnv_qt_LIBS="$LIBS"
+      fi
+      LIBS="$bnv_save_LIBS"
+      CXXFLAGS="$bnv_save_CXXFLAGS"
+    fi dnl $with_Qt_lib_dir was not given
+  fi dnl Done setting up for non-traditional Trolltech installation
+])