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# javaexec.m4
# serial 11
dnl Copyright (C) 2001-2003, 2006, 2009-2025 Free Software Foundation, Inc.
dnl This file is free software; the Free Software Foundation
dnl gives unlimited permission to copy and/or distribute it,
dnl with or without modifications, as long as this notice is preserved.
dnl This file is offered as-is, without any warranty.
# Prerequisites of javaexec.sh.
# gt_JAVAEXEC or gt_JAVAEXEC(testclass, its-directory)
# Sets HAVE_JAVAEXEC to nonempty if javaexec.sh will work.
AC_DEFUN([gt_JAVAEXEC],
[
AC_MSG_CHECKING([for Java virtual machine])
AC_EGREP_CPP([yes], [
#if defined _WIN32 || defined __CYGWIN__ || defined __EMX__ || defined __DJGPP__
yes
#endif
], CLASSPATH_SEPARATOR=';', CLASSPATH_SEPARATOR=':')
CONF_JAVA=
HAVE_JAVA_ENVVAR=
HAVE_JAVA=
HAVE_JRE=
HAVE_JAVAEXEC=1
if test -n "$JAVA"; then
HAVE_JAVA_ENVVAR=1
CONF_JAVA="$JAVA"
else
pushdef([AC_MSG_CHECKING],[:])dnl
pushdef([AC_CHECKING],[:])dnl
pushdef([AC_MSG_RESULT],[:])dnl
AC_CHECK_PROG([HAVE_JAVA_IN_PATH], [java], [yes])
AC_CHECK_PROG([HAVE_JRE_IN_PATH], [jre], [yes])
popdef([AC_MSG_RESULT])dnl
popdef([AC_CHECKING])dnl
popdef([AC_MSG_CHECKING])dnl
m4_if([$1], , , [
gt_saved_CLASSPATH="$CLASSPATH"
CLASSPATH="$2"${CLASSPATH+"$CLASSPATH_SEPARATOR$CLASSPATH"}
])
export CLASSPATH
if test -n "$HAVE_JAVA_IN_PATH" \
&& java -version >/dev/null 2>/dev/null \
m4_if([$1], , , [&& {
echo "$as_me:__oline__: java $1" >&AS_MESSAGE_LOG_FD
java $1 >&AS_MESSAGE_LOG_FD 2>&1
}]); then
HAVE_JAVA=1
CONF_JAVA="java"
else
if test -n "$HAVE_JRE_IN_PATH" \
&& (jre >/dev/null 2>/dev/null || test $? = 1) \
m4_if([$1], , , [&& {
echo "$as_me:__oline__: jre $1" >&AS_MESSAGE_LOG_FD
jre $1 >&AS_MESSAGE_LOG_FD 2>&1
}]); then
HAVE_JRE=1
CONF_JAVA="jre"
else
HAVE_JAVAEXEC=
fi
fi
m4_if([$1], , , [
CLASSPATH="$gt_saved_CLASSPATH"
])
fi
if test -n "$HAVE_JAVAEXEC"; then
ac_result="$CONF_JAVA"
else
ac_result="no"
fi
AC_MSG_RESULT([$ac_result])
AC_SUBST([CONF_JAVA])
AC_SUBST([CLASSPATH])
AC_SUBST([CLASSPATH_SEPARATOR])
AC_SUBST([HAVE_JAVA_ENVVAR])
AC_SUBST([HAVE_JAVA])
AC_SUBST([HAVE_JRE])
])
# Simulates gt_JAVAEXEC when no Java support is desired.
AC_DEFUN([gt_JAVAEXEC_DISABLED],
[
CONF_JAVA=
HAVE_JAVA_ENVVAR=
HAVE_JAVA=
HAVE_JRE=
AC_SUBST([CONF_JAVA])
AC_SUBST([HAVE_JAVA_ENVVAR])
AC_SUBST([HAVE_JAVA])
AC_SUBST([HAVE_JRE])
])
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