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65 lines
2.3 KiB
Plaintext
65 lines
2.3 KiB
Plaintext
# ===========================================================================
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# https://www.gnu.org/software/autoconf-archive/ax_prog_javah.html
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# ===========================================================================
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#
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# SYNOPSIS
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#
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# AX_PROG_JAVAH
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#
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# DESCRIPTION
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#
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# AX_PROG_JAVAH tests the availability of the javah header generator and
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# looks for the jni.h header file. If available, JAVAH is set to the full
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# path of javah and CPPFLAGS is updated accordingly.
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#
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# LICENSE
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#
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# Copyright (c) 2008 Luc Maisonobe <luc@spaceroots.org>
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#
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# Copying and distribution of this file, with or without modification, are
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# permitted in any medium without royalty provided the copyright notice
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# and this notice are preserved. This file is offered as-is, without any
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# warranty.
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#serial 11
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AU_ALIAS([AC_PROG_JAVAH], [AX_PROG_JAVAH])
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AC_DEFUN([AX_PROG_JAVAH],[
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AC_REQUIRE([AC_CANONICAL_BUILD])dnl
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AC_REQUIRE([AC_PROG_CPP])dnl
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AC_PATH_PROG(JAVAH,javah)
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AS_IF([test -n "$ac_cv_path_JAVAH"],
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[
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AC_PREPROC_IFELSE([AC_LANG_SOURCE([[#include <jni.h>]])],[],[
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ac_save_CPPFLAGS="$CPPFLAGS"
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_ACJAVAH_FOLLOW_SYMLINKS("$ac_cv_path_JAVAH")
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ax_prog_javah_bin_dir=`AS_DIRNAME([$_ACJAVAH_FOLLOWED])`
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ac_dir="`AS_DIRNAME([$ax_prog_javah_bin_dir])`/include"
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AS_CASE([$build_os],
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[cygwin*|mingw*],
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[ac_machdep=win32],
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[ac_machdep=`AS_ECHO($build_os) | sed 's,[[-0-9]].*,,'`])
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CPPFLAGS="$ac_save_CPPFLAGS -I$ac_dir -I$ac_dir/$ac_machdep"
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AC_PREPROC_IFELSE([AC_LANG_SOURCE([[#include <jni.h>]])],
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[ac_save_CPPFLAGS="$CPPFLAGS"],
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[AC_MSG_WARN([unable to include <jni.h>])])
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CPPFLAGS="$ac_save_CPPFLAGS"])
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])
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])
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AC_DEFUN([_ACJAVAH_FOLLOW_SYMLINKS],[
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# find the include directory relative to the javac executable
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_cur="$1"
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while ls -ld "$_cur" 2>/dev/null | grep " -> " >/dev/null; do
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AC_MSG_CHECKING([symlink for $_cur])
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_slink=`ls -ld "$_cur" | sed 's/.* -> //'`
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case "$_slink" in
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/*) _cur="$_slink";;
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# 'X' avoids triggering unwanted echo options.
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*) _cur=`echo "X$_cur" | sed -e 's/^X//' -e 's:[[^/]]*$::'`"$_slink";;
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esac
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AC_MSG_RESULT([$_cur])
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done
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_ACJAVAH_FOLLOWED="$_cur"
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])
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