initial import of mod_java from Damjan Jovanovic

git-svn-id: http://svn.freeswitch.org/svn/freeswitch/trunk@5755 d0543943-73ff-0310-b7d9-9358b9ac24b2

build/config/ax_check_java.m4

@@ -0,0 +1,153 @@
+
+dnl Usage:
+dnl AX_CHECK_JAVA
+dnl Test for java, and defines
+dnl - JAVA_CFLAGS (compiler flags)
+dnl - LIB_JAVA (linker flags, stripping and path)
+dnl prerequisites:
+
+AC_DEFUN([AX_CHECK_JAVA],
+[
+AC_ARG_WITH([java],
+            AC_HELP_STRING([  --with-java=PFX], [prefix where 'java' is installed.]),
+            [with_java_prefix=$withval], 
+	    [with_java_prefix=${JAVA_INSTALL_PATH:-/usr/java/j2sdk1.4.1_01}])
+have_java='no'
+LIB_JAVA=''
+JAVA_FLAGS=''
+JAVA_HOME=''
+if test "x$with_java" != 'xno'
+then
+  AC_MSG_CHECKING([for JAVA installation at ${with_java}])
+  AC_MSG_RESULT()
+
+dnl these two lines should let u find most java installations
+  java_dirs="/usr /usr/local /usr/lib/j2sdk1.4-sun /usr/lib/jvm/java /System/Library/Frameworks/JavaVM.framework/Versions/Current /opt /mingw"
+  java_inc_dirs="include include/libgcj Headers"
+  
+  if test "x$with_java" != 'x'
+  then
+    if test -d "$with_java"
+    then
+      JAVA_HOME="$with_java"
+      for j in $java_inc_dirs
+      do
+        echo "configure: __oline__: checking $JAVA_HOME/$j" >&AC_FD_CC
+        if test -r "$JAVA_HOME/$j/jni.h"; then
+	  echo "taking that" >&AC_FD_CC
+	  java_inc_dir="$j"
+	  break 2
+        fi
+      done
+    else
+      AC_MSG_WARN([Sorry, $with_java does not exist, checking usual places])
+                  with_java=''
+    fi
+  fi
+
+dnl now find the java dirs
+
+  if test "x$JAVA_HOME" = 'x'
+  then
+    for i in $java_dirs;
+    do
+      for j in $java_inc_dirs
+      do
+        echo "configure: __oline__: checking $i/$j" >&AC_FD_CC
+        if test -r "$i/$j/jni.h"; then
+	  echo "taking that" >&AC_FD_CC
+          JAVA_HOME="$i"
+	  java_inc_dir="$j"
+	  break
+        fi
+      done
+    done
+    if test "x$JAVA_HOME" != 'x'
+    then
+      AC_MSG_NOTICE([java home set to $JAVA_HOME])
+    else
+      AC_MSG_NOTICE([cannot find the java directory, assuming it is specified in CFLAGS])
+    fi
+  fi
+
+
+
+  failed=0;
+  passed=0;
+  JAVA_OLD_CPPFLAGS=$CPPFLAGS
+  case "${host_os}" in
+    linux*)
+      java_extra_inc=linux
+      ;;
+    darwin*)
+      java_extra_inc=darwin
+      ;;
+    *mingw32*)
+      java_extra_inc=win32
+      ;;
+    *cygwin*)
+      java_extra_inc=win32
+      ;;
+  esac
+dnl Check if extra inc is required
+  CPPFLAGS="$CPPFLAGS -I$JAVA_HOME/$java_inc_dir"
+  AC_LANG_SAVE
+  AC_LANG_C
+  AC_COMPILE_IFELSE(
+    AC_LANG_SOURCE(
+      [[#include <jni.h>]]
+    ),
+    passed=`expr $passed + 1`,failed=`expr $failed + 1`
+  )
+  AC_LANG_RESTORE
+  CPPFLAGS="$JAVA_OLD_CPPFLAGS"
+  JAVA_FLAGS="-I$JAVA_HOME/$java_inc_dir -DHasJava"
+  
+  if test $failed -gt 0
+  then
+    echo "configure: __oline__: checking if extra_inc required" >&AC_FD_CC
+    failed=0;
+    CPPFLAGS="$CPPFLAGS -I$JAVA_HOME/$java_inc_dir -I$JAVA_HOME/$java_inc_dir/$java_extra_inc"
+    AC_LANG_SAVE
+    AC_LANG_C
+    AC_COMPILE_IFELSE(
+      AC_LANG_SOURCE(
+	[[#include <jni.h>]]
+      ),
+      passed=`expr $passed + 1`,failed=`expr $failed + 1`
+    )
+    AC_LANG_RESTORE
+    CPPFLAGS="$JAVA_OLD_CPPFLAGS"
+    JAVA_FLAGS="-I$JAVA_HOME/$java_inc_dir -I$JAVA_HOME/$java_inc_dir/$java_extra_inc -DHasJava"
+  fi
+  AC_MSG_CHECKING(if JAVA package is complete)
+  if test $passed -gt 0
+  then
+    if test $failed -gt 0
+    then
+      AC_MSG_RESULT(no -- some components failed test)
+      have_java='no (failed tests)'
+      JAVA_FLAGS=
+    else
+      if test "x$JAVA_HOME" = 'x'
+      then
+        JAVA_FLAGS=
+      else
+        LIB_JAVA="-L$JAVA_HOME/lib"
+      fi
+      AC_DEFINE(HasJava,1,Define if you have Java)
+      AC_MSG_RESULT(yes)
+      have_java='yes'
+    fi
+  else
+    JAVA_FLAGS=
+    AC_MSG_RESULT(no)
+  fi
+fi
+AM_CONDITIONAL(HasJava, test "x$have_java" = 'xyes')
+AC_SUBST(LIB_JAVA)
+AC_SUBST(JAVA_FLAGS)
+AC_SUBST(JAVA_HOME)
+])
+
+