1 # ===========================================================================
2 # https://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$JNI_INCLUDE_DIR"
28 # If you want to force a specific compiler:
30 # - at the configure.in level, set JAVAC=yourcompiler before calling
33 # - at the configure level, setenv JAVAC
35 # Note: This macro can work with the autoconf M4 macros for Java programs.
36 # This particular macro is not part of the original set of macros.
42 # Copying and distribution of this file, with or without modification, are
43 # permitted in any medium without royalty provided the copyright notice
44 # and this notice are preserved. This file is offered as-is, without any
49 AU_ALIAS([AC_JNI_INCLUDE_DIR], [AX_JNI_INCLUDE_DIR])
50 AC_DEFUN([AX_JNI_INCLUDE_DIR],[
54 if test "x$JAVA_HOME" != x; then
57 if test "x$JAVAC" = x; then
60 AC_PATH_PROG([_ACJNI_JAVAC], [$JAVAC], [no])
61 if test "x$_ACJNI_JAVAC" = xno; then
62 AC_MSG_WARN([cannot find JDK; try setting \$JAVAC or \$JAVA_HOME])
64 _ACJNI_FOLLOW_SYMLINKS("$_ACJNI_JAVAC")
65 _JTOPDIR=`echo "$_ACJNI_FOLLOWED" | sed -e 's://*:/:g' -e 's:/[[^/]]*$::'`
69 darwin*) # Apple Java headers are inside the Xcode bundle.
70 macos_version=$(sw_vers -productVersion | sed -n -e 's/^@<:@0-9@:>@*.\(@<:@0-9@:>@*\).@<:@0-9@:>@*/\1/p')
71 if @<:@ "$macos_version" -gt "7" @:>@; then
72 _JTOPDIR="$(xcrun --show-sdk-path)/System/Library/Frameworks/JavaVM.framework"
73 _JINC="$_JTOPDIR/Headers"
75 _JTOPDIR="/System/Library/Frameworks/JavaVM.framework"
76 _JINC="$_JTOPDIR/Headers"
79 *) _JINC="$_JTOPDIR/include";;
81 _AS_ECHO_LOG([_JTOPDIR=$_JTOPDIR])
82 _AS_ECHO_LOG([_JINC=$_JINC])
84 # On Mac OS X 10.6.4, jni.h is a symlink:
85 # /System/Library/Frameworks/JavaVM.framework/Versions/Current/Headers/jni.h
86 # -> ../../CurrentJDK/Headers/jni.h.
87 AC_CACHE_CHECK(jni headers, ac_cv_jni_header_path,
89 if test -f "$_JINC/jni.h"; then
90 ac_cv_jni_header_path="$_JINC"
91 JNI_INCLUDE_DIRS="$JNI_INCLUDE_DIRS $ac_cv_jni_header_path"
93 _JTOPDIR=`echo "$_JTOPDIR" | sed -e 's:/[[^/]]*$::'`
94 if test -f "$_JTOPDIR/include/jni.h"; then
95 ac_cv_jni_header_path="$_JTOPDIR/include"
96 JNI_INCLUDE_DIRS="$JNI_INCLUDE_DIRS $ac_cv_jni_header_path"
98 ac_cv_jni_header_path=none
103 # get the likely subdirectories for system specific java includes
105 bsdi*) _JNI_INC_SUBDIRS="bsdos";;
106 freebsd*) _JNI_INC_SUBDIRS="freebsd";;
107 darwin*) _JNI_INC_SUBDIRS="darwin";;
108 linux*) _JNI_INC_SUBDIRS="linux genunix";;
109 osf*) _JNI_INC_SUBDIRS="alpha";;
110 solaris*) _JNI_INC_SUBDIRS="solaris";;
111 mingw*) _JNI_INC_SUBDIRS="win32";;
112 cygwin*) _JNI_INC_SUBDIRS="win32";;
113 *) _JNI_INC_SUBDIRS="genunix";;
116 if test "x$ac_cv_jni_header_path" != "xnone"; then
117 # add any subdirectories that are present
118 for JINCSUBDIR in $_JNI_INC_SUBDIRS
120 if test -d "$_JTOPDIR/include/$JINCSUBDIR"; then
121 JNI_INCLUDE_DIRS="$JNI_INCLUDE_DIRS $_JTOPDIR/include/$JINCSUBDIR"
127 # _ACJNI_FOLLOW_SYMLINKS <path>
128 # Follows symbolic links on <path>,
129 # finally setting variable _ACJNI_FOLLOWED
130 # ----------------------------------------
131 AC_DEFUN([_ACJNI_FOLLOW_SYMLINKS],[
132 # find the include directory relative to the javac executable
134 while ls -ld "$_cur" 2>/dev/null | grep " -> " >/dev/null; do
135 AC_MSG_CHECKING([symlink for $_cur])
136 _slink=`ls -ld "$_cur" | sed 's/.* -> //'`
139 # 'X' avoids triggering unwanted echo options.
140 *) _cur=`echo "X$_cur" | sed -e 's/^X//' -e 's:[[^/]]*$::'`"$_slink";;
142 AC_MSG_RESULT([$_cur])
144 _ACJNI_FOLLOWED="$_cur"