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# ===========================================================================
# https://www.gnu.org/software/autoconf-archive/ax_prog_javadoc.html
# ===========================================================================
#
# SYNOPSIS
#
# AX_PROG_JAVADOC
#
# DESCRIPTION
#
# AX_PROG_JAVADOC tests for an existing javadoc generator. It uses the
# environment variable JAVADOC then tests in sequence various common
# javadoc generator.
#
# If you want to force a specific compiler:
#
# - at the configure.in level, set JAVADOC=yourgenerator before calling
# AX_PROG_JAVADOC
#
# - at the configure level, setenv JAVADOC
#
# You can use the JAVADOC variable in your Makefile.in, with @JAVADOC@.
#
# Note: This macro depends on the autoconf M4 macros for Java programs. It
# is VERY IMPORTANT that you download that whole set, some macros depend
# on other. Unfortunately, the autoconf archive does not support the
# concept of set of macros, so I had to break it for submission.
#
# The general documentation of those macros, as well as the sample
# configure.in, is included in the AX_PROG_JAVA macro.
#
# LICENSE
#
# Copyright (c) 2008 Egon Willighagen <e.willighagen@science.ru.nl>
#
# Copying and distribution of this file, with or without modification, are
# permitted in any medium without royalty provided the copyright notice
# and this notice are preserved. This file is offered as-is, without any
# warranty.
#serial 9
AU_ALIAS([AC_PROG_JAVADOC], [AX_PROG_JAVADOC])
AC_DEFUN([AX_PROG_JAVADOC],[
AS_IF([test "x$JAVAPREFIX" = x],
[test "x$JAVADOC" = x && AC_CHECK_PROGS([JAVADOC], [javadoc])],
[test "x$JAVADOC" = x && AC_CHECK_PROGS([JAVADOC], [javadoc], [], [$JAVAPREFIX/bin])])
test "x$JAVADOC" = x && AC_MSG_ERROR([no acceptable javadoc generator found in \$PATH])
AC_PROVIDE([$0])dnl
])
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