1 # ===========================================================================
2 # http://www.gnu.org/software/autoconf-archive/ax_jni_include_dir.html
3 # ===========================================================================
11 # AX_JNI_INCLUDE_DIR finds include directories needed for compiling
12 # programs using the JNI interface.
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.
19 # Example usage follows:
23 # for JNI_INCLUDE_DIR in $JNI_INCLUDE_DIRS
25 # CPPFLAGS="$CPPFLAGS -I$JNI_INCLUDE_DIR"
28 # If you want to force a specific compiler:
30 # - at the configure.in level, set JAVAC=yourcompiler before calling
33 # - at the configure level, setenv JAVAC
35 # Note: This macro can work with the autoconf M4 macros for Java programs.
36 # This particular macro is not part of the original set of macros.
40 # Copyright (c) 2008 Don Anderson <dda@sleepycat.com>
42 # Copying and distribution of this file, with or without modification, are
43 # permitted in any medium without royalty provided the copyright notice
44 # and this notice are preserved. This file is offered as-is, without any
48 # This version of the script has a local patch that has not yet been upstreamed.
50 AU_ALIAS([AC_JNI_INCLUDE_DIR], [AX_JNI_INCLUDE_DIR])
51 AC_DEFUN([AX_JNI_INCLUDE_DIR],[
55 # if JAVA_HOME is set, always use that.
56 if test "x$JAVA_HOME" != x; then
61 # on OS X, use the java_home command to find the user's prefered JVM.
62 _JTOPDIR=`/usr/libexec/java_home`
65 # otherwise, attempt to infer the JDK directory from the location of the
67 if test "x$JAVAC" = x; then
70 AC_PATH_PROG([_ACJNI_JAVAC], [$JAVAC], [no])
71 if test "x$_ACJNI_JAVAC" = xno; then
72 AC_MSG_ERROR([cannot find JDK; try setting \$JAVAC or \$JAVA_HOME])
74 _ACJNI_FOLLOW_SYMLINKS("$_ACJNI_JAVAC")
75 _JTOPDIR=`echo "$_ACJNI_FOLLOWED" | sed -e 's://*:/:g' -e 's:/[[^/]]*$::' -e 's:/[[^/]]*$::'`
80 # always include the main JDK include directory. this is where jni.h should be located.
81 _JINC="$_JTOPDIR/include"
83 _AS_ECHO_LOG([_JTOPDIR=$_JTOPDIR])
84 _AS_ECHO_LOG([_JINC=$_JINC])
86 # verify that jni.h can be found.
87 if test -f "$_JINC/jni.h"; then
88 JNI_INCLUDE_DIRS="$JNI_INCLUDE_DIRS $_JINC"
90 AC_MSG_ERROR([cannot find JDK; try setting \$JAVAC or \$JAVA_HOME])
93 # get the likely subdirectories for system specific java includes (e.g. jni_md.h).
95 bsdi*) _JNI_INC_SUBDIRS="bsdos";;
96 freebsd*) _JNI_INC_SUBDIRS="freebsd";;
97 darwin*) _JNI_INC_SUBDIRS="darwin";;
98 linux*) _JNI_INC_SUBDIRS="linux genunix";;
99 osf*) _JNI_INC_SUBDIRS="alpha";;
100 solaris*) _JNI_INC_SUBDIRS="solaris";;
101 mingw*) _JNI_INC_SUBDIRS="win32";;
102 cygwin*) _JNI_INC_SUBDIRS="win32";;
103 *) _JNI_INC_SUBDIRS="genunix";;
106 # add any subdirectories that are present
107 for JINCSUBDIR in $_JNI_INC_SUBDIRS
109 if test -d "$_JTOPDIR/include/$JINCSUBDIR"; then
110 JNI_INCLUDE_DIRS="$JNI_INCLUDE_DIRS $_JTOPDIR/include/$JINCSUBDIR"
115 # _ACJNI_FOLLOW_SYMLINKS <path>
116 # Follows symbolic links on <path>,
117 # finally setting variable _ACJNI_FOLLOWED
118 # ----------------------------------------
119 AC_DEFUN([_ACJNI_FOLLOW_SYMLINKS],[
120 # find the include directory relative to the javac executable
122 while ls -ld "$_cur" 2>/dev/null | grep " -> " >/dev/null; do
123 AC_MSG_CHECKING([symlink for $_cur])
124 _slink=`ls -ld "$_cur" | sed 's/.* -> //'`
127 # 'X' avoids triggering unwanted echo options.
128 *) _cur=`echo "X$_cur" | sed -e 's/^X//' -e 's:[[^/]]*$::'`"$_slink";;
130 AC_MSG_RESULT([$_cur])
132 _ACJNI_FOLLOWED="$_cur"