view m4/ac_jni_include_dir.m4 @ 214:f28f66faa016

Add "stateful" feature type with initial feature "last n"

Stateful feature extraction functions are functions that require state to be maintained between successive calls.  This is necessary, for example when an accumulation of values is required, or changes need to be measured over time.

The initial xtract_last_n() function accumulates the last N (single) values from *data and writes them to *result

##### http://autoconf-archive.cryp.to/ac_jni_include_dir.html
#
# SYNOPSIS
#
#   AC_JNI_INCLUDE_DIR
#
# DESCRIPTION
#
#   AC_JNI_INCLUDE_DIR finds include directories needed for compiling
#   programs using the JNI interface.
#
#   JNI include directories are usually in the java distribution This
#   is deduced from the value of JAVAC. When this macro completes, a
#   list of directories is left in the variable JNI_INCLUDE_DIRS.
#
#   Example usage follows:
#
#       AC_JNI_INCLUDE_DIR
#
#       for JNI_INCLUDE_DIR in $JNI_INCLUDE_DIRS
#       do
#               CPPFLAGS="$CPPFLAGS -I$JNI_INCLUDE_DIR"
#       done
#
#   If you want to force a specific compiler:
#
#   - at the configure.in level, set JAVAC=yourcompiler before calling
#   AC_JNI_INCLUDE_DIR
#
#   - at the configure level, setenv JAVAC
#
#   Note: This macro can work with the autoconf M4 macros for Java
#   programs. This particular macro is not part of the original set of
#   macros.
#
# LAST MODIFICATION
#
#   2006-05-27
#
# COPYLEFT
#
#   Copyright (c) 2006 Don Anderson <[e-mail]>
#
#   Copying and distribution of this file, with or without
#   modification, are permitted in any medium without royalty provided
#   the copyright notice and this notice are preserved.

AC_DEFUN([AC_JNI_INCLUDE_DIR],[

JNI_INCLUDE_DIRS=""

test "x$JAVAC" = x && AC_MSG_ERROR(['\$JAVAC' undefined])
AC_PATH_PROG(_ACJNI_JAVAC, $JAVAC, no)
test "x$_ACJNI_JAVAC" = xno && AC_MSG_ERROR([$JAVAC could not be found in path])

_ACJNI_FOLLOW_SYMLINKS("$_ACJNI_JAVAC")
_JTOPDIR=`echo "$_ACJNI_FOLLOWED" | sed -e 's://*:/:g' -e 's:/[[^/]]*$::'`
case "$host_os" in
        darwin*)        _JTOPDIR=`echo "$_JTOPDIR" | sed -e 's:/[[^/]]*$::'`
                        _JINC="$_JTOPDIR/Headers";;
        *)              _JINC="$_JTOPDIR/include";;
esac
if test -f "$_JINC/jni.h"; then
        JNI_INCLUDE_DIRS="$JNI_INCLUDE_DIRS $_JINC"
else
        _JTOPDIR=`echo "$_JTOPDIR" | sed -e 's:/[[^/]]*$::'`
        if test -f "$_JTOPDIR/include/jni.h"; then
                JNI_INCLUDE_DIRS="$JNI_INCLUDE_DIRS $_JTOPDIR/include"
        else
                AC_MSG_ERROR([cannot find java include files])
        fi
fi

# get the likely subdirectories for system specific java includes
case "$host_os" in
bsdi*)          _JNI_INC_SUBDIRS="bsdos";;
linux*)         _JNI_INC_SUBDIRS="linux genunix";;
osf*)           _JNI_INC_SUBDIRS="alpha";;
solaris*)       _JNI_INC_SUBDIRS="solaris";;
mingw*)			_JNI_INC_SUBDIRS="win32";;
cygwin*)		_JNI_INC_SUBDIRS="win32";;
*)              _JNI_INC_SUBDIRS="genunix";;
esac

# add any subdirectories that are present
for JINCSUBDIR in $_JNI_INC_SUBDIRS
do
        if test -d "$_JTOPDIR/include/$JINCSUBDIR"; then
                JNI_INCLUDE_DIRS="$JNI_INCLUDE_DIRS $_JTOPDIR/include/$JINCSUBDIR"
        fi
done
])

# _ACJNI_FOLLOW_SYMLINKS <path>
# Follows symbolic links on <path>,
# finally setting variable _ACJNI_FOLLOWED
# --------------------
AC_DEFUN([_ACJNI_FOLLOW_SYMLINKS],[
# find the include directory relative to the javac executable
_cur="$1"
while ls -ld "$_cur" 2>/dev/null | grep " -> " >/dev/null; do
        AC_MSG_CHECKING(symlink for $_cur)
        _slink=`ls -ld "$_cur" | sed 's/.* -> //'`
        case "$_slink" in
        /*) _cur="$_slink";;
        # 'X' avoids triggering unwanted echo options.
        *) _cur=`echo "X$_cur" | sed -e 's/^X//' -e 's:[[^/]]*$::'`"$_slink";;
        esac
        AC_MSG_RESULT($_cur)
done
_ACJNI_FOLLOWED="$_cur"
])# _ACJNI