m4/qt.m4

   1 # Detect Qt headers and libraries and set flag variables
   2
   3 AC_DEFUN([FC_QT],
   4 [
   5   AC_LANG_PUSH([C++])
   6
   7   AC_MSG_CHECKING([Qt headers])
   8
   9   AC_ARG_WITH([qt-includes],
  10               [  --with-qt-includes      path to Qt includes],
  11               [FC_QT_COMPILETEST([$withval])],
  12 [POTENTIAL_PATHS="/usr/include /usr/include/qt4"
  13 dnl First test without any additional include paths to see if it works already
  14 FC_QT_COMPILETEST
  15 for TEST_PATH in $POTENTIAL_PATHS
  16 do
  17   if test "x$qt_headers" != "xyes" ; then
  18     FC_QT_COMPILETEST($TEST_PATH)
  19   fi
  20 done])
  21
  22   if test "x$qt_headers" = "xyes" ; then
  23     AC_MSG_RESULT([found])
  24
  25     AC_MSG_CHECKING([Qt libraries])
  26     AC_ARG_WITH([qt-libs],
  27                 [  --with-qt-libs          path to Qt libraries],
  28                 [FC_QT_LINKTEST([$withval])],
  29 [POTENTIAL_PATHS="/usr/lib/qt4"
  30 dnl First test without any additional library paths to see if it works already
  31 FC_QT_LINKTEST
  32 for TEST_PATH in $POTENTIAL_PATHS
  33 do
  34   if test "x$qt_libs" != "xyes" ; then
  35     FC_QT_LINKTEST($TEST_PATH)
  36   fi
  37 done])
  38
  39   fi
  40
  41   AC_LANG_POP([C++])
  42
  43   if test "x$qt_libs" = "xyes" ; then
  44     AC_MSG_RESULT([found])
  45     fc_qt_usable=true
  46   else
  47     AC_MSG_RESULT([not found])
  48     fc_qt_usable=false
  49   fi
  50 ])
  51
  52 dnl Test if Qt headers are found from given path
  53 AC_DEFUN([FC_QT_COMPILETEST],
  54 [
  55   if test "x$1" != "x" ; then
  56     CPPFADD=" -I$1 -I$1/QtCore -I$1/QtGui"
  57   else
  58     CPPFADD=""
  59   fi
  60
  61   CPPFLAGS_SAVE="$CPPFLAGS"
  62   CPPFLAGS="${CPPFLAGS}${CPPFADD}"
  63   AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[#include <QApplication>]],
  64 [[QApplication app(0, 0);]])],
  65     [qt_headers=yes
  66      FC_QT_CPPFLAGS="${FC_QT_CPPFLAGS}${CPPFADD}"])
  67   CPPFLAGS="$CPPFLAGS_SAVE"
  68 ])
  69
  70 dnl Test Qt application linking with current flags
  71 AC_DEFUN([FC_QT_LINKTEST],
  72 [
  73   if test "x$1" != "x" ; then
  74     LIBSADD=" -L$1 -lQtGui -lQtCore"
  75   else
  76     LIBSADD=" -lQtGui -lQtCore"
  77   fi
  78
  79   CPPFLAGS_SAVE="$CPPFLAGS"
  80   CPPFLAGS="$CPPFLAGS $FC_QT_CPPFLAGS"
  81   LIBS_SAVE="$LIBS"
  82   LIBS="${LIBS}${LIBSADD}"
  83   AC_LINK_IFELSE([AC_LANG_PROGRAM([[#include <QApplication>]],
  84 [[QApplication app(0, 0);]])],
  85 [qt_libs=yes
  86  FC_QT_LIBS="${FC_QT_LIBS}${LIBSADD}"])
  87  LIBS="$LIBS_SAVE"
  88  CPPFLAGS="$CPPFLAGS_SAVE"
  89 ])