[Bug classpath/26046] checking for files doesn't work while cross-compiling

[lucchesi.esteban at gmail dot com]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=26046

lucchesi.esteban at gmail dot com changed:

           What    |Removed                     |Added
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                 CC|                            |lucchesi.esteban at gmail
                   |                            |dot com

--- Comment #2 from lucchesi.esteban at gmail dot com 2010-10-15 23:00:15 UTC 
---
>From configure.ac:

    if test "x$HAVE_QT4" = "xyes"; then
      dnl Check needed because in some cases the QtGui includedir
      dnl doesn't contain the subsystem dir.
      QT_INCLUDE_DIR=`$PKG_CONFIG --variable=includedir QtGui`
      EXTRA_QT_INCLUDE_DIR="$QT_INCLUDE_DIR/Qt"
      AC_CHECK_FILE([$QT_INCLUDE_DIR/QWidget],
      AC_MSG_NOTICE([No extra QT_INCLUDE_DIR needed]),
      AC_CHECK_FILE([$EXTRA_QT_INCLUDE_DIR/QWidget],
    QT_CFLAGS="$QT_CFLAGS -I$EXTRA_QT_INCLUDE_DIR",
    AC_MSG_WARN([QWidget not found])))
    AC_CHECK_PROG(MOC, [moc], [moc])
    AC_CHECK_PROG(MOC, [moc-qt4], [moc-qt4])
    fi

But from Autoconf:
Before using these macros, ask yourself whether a run-time test might not be a
better solution. Be aware that, like most Autoconf macros, they test a feature
of the host machine, and therefore, they die when cross-compiling.

Macro: AC_CHECK_FILE (file, [action-if-found], [action-if-not-found])