m4/ax_jni_include_dir.m4

   1 # ===========================================================================
   2 #    http://www.gnu.org/software/autoconf-archive/ax_jni_include_dir.html
   3 # ===========================================================================
   4 #
   5 # SYNOPSIS
   6 #
   7 #   AX_JNI_INCLUDE_DIR
   8 #
   9 # DESCRIPTION
  10 #
  11 #   AX_JNI_INCLUDE_DIR finds include directories needed for compiling
  12 #   programs using the JNI interface.
  13 #
  14 #   JNI include directories are usually in the Java distribution. This is
  15 #   deduced from the value of $JAVA_HOME, $JAVAC, or the path to "javac", in
  16 #   that order. When this macro completes, a list of directories is left in
  17 #   the variable JNI_INCLUDE_DIRS.
  18 #
  19 #   Example usage follows:
  20 #
  21 #     AX_JNI_INCLUDE_DIR
  22 #
  23 #     for JNI_INCLUDE_DIR in $JNI_INCLUDE_DIRS
  24 #     do
  25 #             CPPFLAGS="$CPPFLAGS -I$JNI_INCLUDE_DIR"
  26 #     done
  27 #
  28 #   If you want to force a specific compiler:
  29 #
  30 #   - at the configure.in level, set JAVAC=yourcompiler before calling
  31 #   AX_JNI_INCLUDE_DIR
  32 #
  33 #   - at the configure level, setenv JAVAC
  34 #
  35 #   Note: This macro can work with the autoconf M4 macros for Java programs.
  36 #   This particular macro is not part of the original set of macros.
  37 #
  38 # LICENSE
  39 #
  40 #   Copyright (c) 2008 Don Anderson <dda@sleepycat.com>
  41 #
  42 #   Copying and distribution of this file, with or without modification, are
  43 #   permitted in any medium without royalty provided the copyright notice
  44 #   and this notice are preserved. This file is offered as-is, without any
  45 #   warranty.
  46
  47 #serial 10
  48
  49 AU_ALIAS([AC_JNI_INCLUDE_DIR], [AX_JNI_INCLUDE_DIR])
  50 AC_DEFUN([AX_JNI_INCLUDE_DIR],[
  51
  52 JNI_INCLUDE_DIRS=""
  53
  54 if test "x$JAVA_HOME" != x; then
  55         _JTOPDIR="$JAVA_HOME"
  56 else
  57         if test "x$JAVAC" = x; then
  58                 JAVAC=javac
  59         fi
  60         AC_PATH_PROG([_ACJNI_JAVAC], [$JAVAC], [no])
  61         if test "x$_ACJNI_JAVAC" = xno; then
  62                 AC_MSG_ERROR([cannot find JDK; try setting \$JAVAC or \$JAVA_HOME])
  63         fi
  64         _ACJNI_FOLLOW_SYMLINKS("$_ACJNI_JAVAC")
  65         _JTOPDIR=`echo "$_ACJNI_FOLLOWED" | sed -e 's://*:/:g' -e 's:/[[^/]]*$::'`
  66 fi
  67
  68 case "$host_os" in
  69         darwin*)        _JTOPDIR=`echo "$_JTOPDIR" | sed -e 's:/[[^/]]*$::'`
  70                         _JINC="$_JTOPDIR/Headers";;
  71         *)              _JINC="$_JTOPDIR/include";;
  72 esac
  73 _AS_ECHO_LOG([_JTOPDIR=$_JTOPDIR])
  74 _AS_ECHO_LOG([_JINC=$_JINC])
  75
  76 # On Mac OS X 10.6.4, jni.h is a symlink:
  77 # /System/Library/Frameworks/JavaVM.framework/Versions/Current/Headers/jni.h
  78 # -> ../../CurrentJDK/Headers/jni.h.
  79 AC_CHECK_FILE([$_JINC/jni.h],
  80         [JNI_INCLUDE_DIRS="$JNI_INCLUDE_DIRS $_JINC"],
  81         [_JTOPDIR=`echo "$_JTOPDIR" | sed -e 's:/[[^/]]*$::'`
  82          AC_CHECK_FILE([$_JTOPDIR/include/jni.h],
  83                 [JNI_INCLUDE_DIRS="$JNI_INCLUDE_DIRS $_JTOPDIR/include"],
  84                 AC_MSG_ERROR([cannot find JDK header files]))
  85         ])
  86
  87 # get the likely subdirectories for system specific java includes
  88 case "$host_os" in
  89 bsdi*)          _JNI_INC_SUBDIRS="bsdos";;
  90 freebsd*)       _JNI_INC_SUBDIRS="freebsd";;
  91 linux*)         _JNI_INC_SUBDIRS="linux genunix";;
  92 osf*)           _JNI_INC_SUBDIRS="alpha";;
  93 solaris*)       _JNI_INC_SUBDIRS="solaris";;
  94 mingw*)         _JNI_INC_SUBDIRS="win32";;
  95 cygwin*)        _JNI_INC_SUBDIRS="win32";;
  96 *)              _JNI_INC_SUBDIRS="genunix";;
  97 esac
  98
  99 # add any subdirectories that are present
 100 for JINCSUBDIR in $_JNI_INC_SUBDIRS
 101 do
 102     if test -d "$_JTOPDIR/include/$JINCSUBDIR"; then
 103          JNI_INCLUDE_DIRS="$JNI_INCLUDE_DIRS $_JTOPDIR/include/$JINCSUBDIR"
 104     fi
 105 done
 106 ])
 107
 108 # _ACJNI_FOLLOW_SYMLINKS <path>
 109 # Follows symbolic links on <path>,
 110 # finally setting variable _ACJNI_FOLLOWED
 111 # ----------------------------------------
 112 AC_DEFUN([_ACJNI_FOLLOW_SYMLINKS],[
 113 # find the include directory relative to the javac executable
 114 _cur="$1"
 115 while ls -ld "$_cur" 2>/dev/null | grep " -> " >/dev/null; do
 116         AC_MSG_CHECKING([symlink for $_cur])
 117         _slink=`ls -ld "$_cur" | sed 's/.* -> //'`
 118         case "$_slink" in
 119         /*) _cur="$_slink";;
 120         # 'X' avoids triggering unwanted echo options.
 121         *) _cur=`echo "X$_cur" | sed -e 's/^X//' -e 's:[[^/]]*$::'`"$_slink";;
 122         esac
 123         AC_MSG_RESULT([$_cur])
 124 done
 125 _ACJNI_FOLLOWED="$_cur"
 126 ])# _ACJNI