libjava/classpath/m4/ac_prog_javac_works.m4

   1 dnl @synopsis AC_PROG_JAVAC_WORKS
   2 dnl
   3 dnl Internal use ONLY.
   4 dnl
   5 dnl Note: This is part of the set of autoconf M4 macros for Java
   6 dnl programs. It is VERY IMPORTANT that you download the whole set,
   7 dnl some macros depend on other. Unfortunately, the autoconf archive
   8 dnl does not support the concept of set of macros, so I had to break it
   9 dnl for submission. The general documentation, as well as the sample
  10 dnl configure.in, is included in the AC_PROG_JAVA macro.
  11 dnl
  12 dnl @category Java
  13 dnl @author Stephane Bortzmeyer <bortzmeyer@pasteur.fr>
  14 dnl @version 2000-07-19
  15 dnl @license GPLWithACException
  16 dnl
  17 dnl Modified to test for 1.5 by Andrew John Hughes on 2008-02-11
  18
  19 AC_DEFUN_ONCE([AC_PROG_JAVAC_WORKS],[
  20 AC_REQUIRE([AC_PROG_JAVAC])
  21 AC_CACHE_CHECK([if $JAVAC works], ac_cv_prog_javac_works, [
  22 JAVA_TEST=Object.java
  23 CLASS_TEST=Object.class
  24 cat << \EOF > $JAVA_TEST
  25 /* [#]line __oline__ "configure" */
  26 package java.lang;
  27
  28 public class Object
  29 {
  30   static <T> void doStuff()
  31   {
  32   }
  33 }
  34 EOF
  35 if test x$JAVAC_IS_GCJ = xyes; then
  36   CMD="$JAVAC $JAVACFLAGS -fsource=1.5 -ftarget=1.5 $JAVA_TEST"
  37 else
  38   CMD="$JAVAC $JAVACFLAGS -source 1.5 -target 1.5 $JAVA_TEST"
  39 fi
  40 if AC_TRY_COMMAND($CMD) >/dev/null 2>&1; then
  41   ac_cv_prog_javac_works=yes
  42 else
  43   AC_MSG_ERROR([The Java compiler $JAVAC failed (see config.log, check the CLASSPATH?)])
  44   echo "configure: failed program was:" >&AC_FD_CC
  45   cat $JAVA_TEST >&AC_FD_CC
  46 fi
  47 rm -f $JAVA_TEST $CLASS_TEST
  48 ])
  49 AC_PROVIDE([$0])dnl
  50 ])