m4/ax_prog_javac.m4

   1 # SPDX-License-Identifier: GPL-2.0-or-later WITH LicenseRef-Autoconf-exception-macro
   2 #
   3 # ===========================================================================
   4 #      https://www.gnu.org/software/autoconf-archive/ax_prog_javac.html
   5 # ===========================================================================
   6 #
   7 # SYNOPSIS
   8 #
   9 #   AX_PROG_JAVAC
  10 #
  11 # DESCRIPTION
  12 #
  13 #   AX_PROG_JAVAC tests an existing Java compiler. It uses the environment
  14 #   variable JAVAC then tests in sequence various common Java compilers. For
  15 #   political reasons, it starts with the free ones.
  16 #
  17 #   If you want to force a specific compiler:
  18 #
  19 #   - at the configure.in level, set JAVAC=yourcompiler before calling
  20 #   AX_PROG_JAVAC
  21 #
  22 #   - at the configure level, setenv JAVAC
  23 #
  24 #   You can use the JAVAC variable in your Makefile.in, with @JAVAC@.
  25 #
  26 #   *Warning*: its success or failure can depend on a proper setting of the
  27 #   CLASSPATH env. variable.
  28 #
  29 #   TODO: allow to exclude compilers (rationale: most Java programs cannot
  30 #   compile with some compilers like guavac).
  31 #
  32 #   Note: This is part of the set of autoconf M4 macros for Java programs.
  33 #   It is VERY IMPORTANT that you download the whole set, some macros depend
  34 #   on other. Unfortunately, the autoconf archive does not support the
  35 #   concept of set of macros, so I had to break it for submission. The
  36 #   general documentation, as well as the sample configure.in, is included
  37 #   in the AX_PROG_JAVA macro.
  38 #
  39 # LICENSE
  40 #
  41 #   Copyright (c) 2008 Stephane Bortzmeyer <bortzmeyer@pasteur.fr>
  42 #
  43 #   This program is free software; you can redistribute it and/or modify it
  44 #   under the terms of the GNU General Public License as published by the
  45 #   Free Software Foundation; either version 2 of the License, or (at your
  46 #   option) any later version.
  47 #
  48 #   This program is distributed in the hope that it will be useful, but
  49 #   WITHOUT ANY WARRANTY; without even the implied warranty of
  50 #   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General
  51 #   Public License for more details.
  52 #
  53 #   You should have received a copy of the GNU General Public License along
  54 #   with this program. If not, see <https://www.gnu.org/licenses/>.
  55 #
  56 #   As a special exception, the respective Autoconf Macro's copyright owner
  57 #   gives unlimited permission to copy, distribute and modify the configure
  58 #   scripts that are the output of Autoconf when processing the Macro. You
  59 #   need not follow the terms of the GNU General Public License when using
  60 #   or distributing such scripts, even though portions of the text of the
  61 #   Macro appear in them. The GNU General Public License (GPL) does govern
  62 #   all other use of the material that constitutes the Autoconf Macro.
  63 #
  64 #   This special exception to the GPL applies to versions of the Autoconf
  65 #   Macro released by the Autoconf Archive. When you make and distribute a
  66 #   modified version of the Autoconf Macro, you may extend this special
  67 #   exception to the GPL to apply to your modified version as well.
  68
  69 #serial 8
  70
  71 AU_ALIAS([AC_PROG_JAVAC], [AX_PROG_JAVAC])
  72 AC_DEFUN([AX_PROG_JAVAC],[
  73 m4_define([m4_ax_prog_javac_list],["gcj -C" guavac jikes javac])dnl
  74 AS_IF([test "x$JAVAPREFIX" = x],
  75       [test "x$JAVAC" = x && AC_CHECK_PROGS([JAVAC], [m4_ax_prog_javac_list])],
  76       [test "x$JAVAC" = x && AC_CHECK_PROGS([JAVAC], [m4_ax_prog_javac_list], [], [$JAVAPREFIX/bin])])
  77 m4_undefine([m4_ax_prog_javac_list])dnl
  78 test "x$JAVAC" = x && AC_MSG_ERROR([no acceptable Java compiler found in \$PATH])
  79 AX_PROG_JAVAC_WORKS
  80 AC_PROVIDE([$0])dnl
  81 ])