The R Project SVN R

if test -z "${R_HOME}"; then

    echo "This command can be only executed via R CMD!"

    exit 1

fi

## pick up configure-time settings

. "${R_HOME}/etc${R_ARCH}/javaconf"

DYLIB_EXT=`${R_HOME}/bin/R CMD config DYLIB_EXT`

tools_classpath=${R_SHARE_DIR}/java

revision='$Rev: 77228 $'

version=`set - ${revision}; echo ${2}`

version="R Java configurator: ${R_VERSION} (r${version})

Copyright (C) 2002-2018 The R Core Team.

This is free software; see the GNU General Public License version 2

or later for copying conditions.  There is NO warranty."

usage="

Usage: R CMD javareconf [options]

Detect current Java setup and update the corresponding configuration in R.

Options:

  -h, --help     print this help message and exit

  -v, --version  print version info and exit

  -n, --dry-run  perform Java detection, but don't touch any

                 configuration files

  -e <prog>      same as -n but exports all detected variables

                 and runs <prog>. If -e is the last argument

                 or <prog> is '' then a shell is used instead

  xxx=yyy        evaluate the corresponding expression

                 (e.g. JAVA_HOME=/usr/lib/java)

Environment variables that can be used to influence the detection:

  JAVA           path to a Java interpreter executable

                 By default first 'java' command found on the PATH

                 is taken (unless JAVA_HOME is also specified).

  JAVA_HOME      home of the Java environment. If not specified,

                 it will be detected automatically from the Java

                 interpreter.

  JAVAC          path to a Java compiler

  JAVAH          path to a Java header/stub generator

  JAR            path to a Java archive tool

Values specified when R was configured will be used unless overridden.

The following variables should be used with extreme caution. They

must all match, so use only if you have a very special setup that

javareconf cannot detect automatically:

  JAVA_LD_LIBRARY_PATH library path necessary at run-time

  JAVA_CPPFLAGS  C preprocessor flags necessary to compile JNI programs

  JAVA_LIBS      libraries (as linker flags) necessary to compile

                 JNI programs

Report bugs at <https://bugs.R-project.org>."

dry_run=no

export_vars=no

while test -n "${1}"; do

    case ${1} in

	-help | --help | -h) echo "${usage}"; exit 0 ;;

	-v | --version) echo "${version}"; exit 0 ;;

	-n | --dry-run) dry_run=yes ;;

	-e) dry_run=yes; export_vars=yes; run_prog="${2}"; if test "$#" != 1; then shift; fi ;;

	*=*) eval ${1} ;;

    esac

    shift

done

## find java compiler binaries

if test -z "${JAVA_HOME}" ; then

    JAVA_PATH=${PATH}

else

    if test ! -d "${JAVA_HOME}"; then

	echo "*** JAVA_HOME is not a valid path, ignoring"

	JAVA_HOME=

	JAVA_PATH=${PATH}

    else

	## try jre/bin first just in case we don't have full JDK

	JAVA_PATH=${JAVA_HOME}:${JAVA_HOME}/jre/bin:${JAVA_HOME}/bin:${JAVA_HOME}/../bin:${PATH}

    fi

fi

## if 'java' is not on the PATH or JAVA_HOME, add some guesses as of

## where java could live

JAVA_PATH=${JAVA_PATH}:/usr/java/bin:/usr/jdk/bin:/usr/lib/java/bin:/usr/lib/jdk/bin:/usr/local/java/bin:/usr/local/jdk/bin:/usr/local/lib/java/bin:/usr/local/lib/jdk/bin

if test -z "$JAVA"; then

    save_IFS=$IFS; IFS=:

    for dir in ${JAVA_PATH}; do

	if test -f "$dir/java"; then

	    JAVA="$dir/java"

	    break

	fi

    done

    IFS=${save_IFS}

fi

if test -z "$JAVA"; then

    echo "~*** Cannot find any Java interpreter~*** Please make sure 'java' is on your PATH or set JAVA_HOME correspondingly"|${SED-sed} -e 'y/~/\n/' >&2

    exit 1

fi

echo "Java interpreter : $JAVA"

jires=`$JAVA -classpath ${tools_classpath} getsp -test`

if test "$jires" != "Test1234OK"; then

    echo "$jires"

    echo "~*** Java interpreter doesn't work properly.~"|${SED-sed} -e 'y/~/\n/' >&2

    exit 1

fi

if test -z "${JAVA_HOME}"; then

    JAVA_HOME=`$JAVA -classpath ${tools_classpath} getsp java.home`

fi

if test -z "${JAVA_HOME}"; then

    echo "~*** Cannot find Java environemnt.~*** Please set JAVA_HOME correspondingly.~"|${SED-sed} -e 'y/~/\n/' >&2

    exit 1

fi

echo "Java version     : `$JAVA -classpath ${tools_classpath} getsp java.version 2>/dev/null`"

echo "Java home path   : ${JAVA_HOME}"

# optional parts - compiler, javah and jar

if test -z "$JAVAC"; then

    save_IFS=$IFS; IFS=:

    for dir in ${JAVA_PATH}; do

	if test -f "$dir/javac"; then

	    JAVAC="$dir/javac"

	    break

	fi

    done

    IFS=${save_IFS}

fi

: ${TMPDIR=/tmp}

{ tempdir=`(mktemp -d -q "${TMPDIR}/Rjavareconf.XXXXXX") 2>/dev/null` \

	&& test -n "${tempdir}" && test -d "${tempdir}" ; } ||

{ test -n "${RANDOM}" && tempdir=${TMPDIR}/Rjavareconf.$$-${RANDOM} \

	&& (mkdir "${tempdir}") ; } ||

{ tempdir=${TMPDIR}/Rjavareconf.$$-`date +%m%d%H%M%S` \

	&& (mkdir "${tempdir}"); } ||

{ tempdir=${TMPDIR}/Rjavareconf.$$ && (mkdir "${tempdir}") ; } ||

    (error "cannot create temporary directory" && exit 1)

# test functionality of the compiler

javac_works='not present'

if test -n "$JAVAC"; then

    javac_works='not functional'

    echo "public class A { }" > "${tempdir}/A.java"

    if test -f "${tempdir}/A.java"; then

	if "${JAVAC}" "${tempdir}/A.java" >/dev/null; then

           if test -f "${tempdir}/A.class"; then

		javac_works=yes

	    fi

	fi

    fi

fi

if test "${javac_works}" = yes; then

    echo "Java compiler    : ${JAVAC}"

else

    echo "Java compiler    : ${javac_works}"

fi

## FIXME: 

## javah is deprecated in Java 9 and removed in 2018-03 snapshots.

## Worse, on macOS /usr/bin/javah still exists but links to a non-existent file

##'javac -h' replaces 'javah -d' so this needs changes in e.g. rJava.

if test -z "$JAVAH"; then

    save_IFS=$IFS; IFS=:

    for dir in ${JAVA_PATH}; do

	if test -f "$dir/javah"; then

	    JAVAH="$dir/javah"

	    break

	fi

    done

    IFS=${save_IFS}

fi

echo "Java headers gen.: ${JAVAH}"

if test -z "$JAR"; then

    save_IFS=$IFS; IFS=:

    for dir in ${JAVA_PATH}; do

	if test -f "$dir/jar"; then

	    JAR="$dir/jar"

	    break

	fi

    done

    IFS=${save_IFS}

fi

echo "Java archive tool: ${JAR}"

: ${JAVA_LIBS=~autodetect~}

: ${JAVA_CPPFLAGS=~autodetect~}

: ${JAVA_LD_LIBRARY_PATH=~autodetect~}

custom_JAVA_LIBS="${JAVA_LIBS}"

custom_JAVA_CPPFLAGS="${JAVA_CPPFLAGS}"

custom_JAVA_LD_LIBRARY_PATH="${JAVA_LD_LIBRARY_PATH}"

# sys-dependent tweaks to JNI flags -- Darwin ones removed for R 3.5

## we now look for a path to put in R_LD_LIBRARY_PATH which will

## enable libjvm to be found at run time.  This should not be needed,

## but it seems that libjvm is often not in the ld.so cache.

if test "${JAVA_LIBS}" = "~autodetect~"; then

	## we need to reset LD_LIBRARY_PATH, because Java automatically

	## adds all LD_LIBRARY_PATH to Java path

	save_LDLP=${LD_LIBRARY_PATH}

	LD_LIBRARY_PATH=

	export LD_LIBRARY_PATH

	# remove trailing/leading : (if any)

	java_library_path=`"$JAVA" -classpath "${tools_classpath}" getsp java.library.path| ${SED-sed} -e 's/:$//' -e 's/^://'`

	## see if libjvm is on this path: it is not for recent Oracle Java

	has_libjvm=no

	save_IFS=$IFS; IFS=:

	for dir in ${java_library_path}; do

	    if test -f "$dir/libjvm${DYLIB_EXT}"; then

		has_libjvm=yes

		java_library_path="${dir}"

		break

	    fi

	done

	# Then try some heuristics using sun.boot.library.path

	if test ${has_libjvm} = no; then

	    boot_path=`"$JAVA" -classpath "${tools_classpath}" getsp sun.boot.library.path| ${SED-sed} -e 's/:$//' -e 's/^://'`

	    if test -n "${boot_path}"; then

		for dir in "${boot_path}" "${boot_path}/client" "${boot_path}/server"; do

		    if test -f "$dir/libjvm${DYLIB_EXT}"; then

			has_libjvm=yes

			java_library_path="${dir}"

			break

		    fi

		done

	    fi

	fi	

	IFS=${save_IFS}

	# replace occurrences of JAVA_HOME with $(JAVA_HOME)

	# If JAVA_HOME was a link, it will be the canonical path we

	# want to replace.  We need realpath to determine what that is.

	if test "@REALPATH@" != "false"; then

             java_home=`@REALPATH@ "${JAVA_HOME}"`

	else

       	    java_home="${JAVA_HOME}"

	fi

	JAVA_LD_LIBRARY_PATH=`echo "${java_library_path}" | ${SED-sed} -e" s:${java_home}:\$\(JAVA_HOME\):g"`

	LD_LIBRARY_PATH=${save_LDLP}

	export LD_LIBRARY_PATH

	# build JAVA_LIBS from the detected path

	JAVA_LIBS=`echo ${JAVA_LD_LIBRARY_PATH}|${SED-sed} -e 's|:| -L|g'`

	if test -n "${JAVA_LIBS}"; then JAVA_LIBS="-L${JAVA_LIBS}"; fi

	JAVA_LIBS="${JAVA_LIBS} -ljvm"

	# create shell-version to be used in scripts

	JAVA_LD_LIBRARY_PATH_SH=`echo ${JAVA_LD_LIBRARY_PATH}|${SED-sed} -e 's:$(JAVA_HOME):\$\{JAVA_HOME\}:g'`

        ## includes consist of two parts - jni.h and machine-dependent jni_md.h

        jinc=''

	JAVA_CPPFLAGS=''

        for pinc in include ../include jre/include; do

          if test -f "${JAVA_HOME}/${pinc}/jni.h"; then jinc="${JAVA_HOME}/${pinc}"; break; fi

        done

        ## only if we get jni.h we can try to find jni_md.h

        if test -n "${jinc}"; then

           JAVA_CPPFLAGS="-I${jinc}"

           jmdinc=''

           jmdirs=''

	   ## we are not in configure, so we need to find the OS from R

	   host_os=`echo 'cat(R.version$os)'|${R_HOME}/bin/R --vanilla --no-echo 2>/dev/null`

           ## put the most probable locations for each system in the first place

           case "${host_os}" in

             darwin*)  jmdirs=darwin;;

             linux*)   jmdirs=linux;;

             bsdi*)    jmdirs=bsdos;;

             osf*)     jmdirs=alpha;;

             solaris*) jmdirs=solaris;;

             freebsd*) jmdirs=freebsd; add_java_libs='-lpthread';;

           esac

	   ## in case host_os detection failed, add all candidates

	   if test -z "${jmdirs}"; then jmdirs='linux solaris freebsd alpha bsdos'; fi

           ## prepend . and append less-likely ones

           jmdirs=". ${jmdirs} genunix ppc x86 iris hp-ux aix win32 cygwin openbsd"

           for pimd in ${jmdirs}; do

             if test -f "${jinc}/${pimd}/jni_md.h"; then jmdinc="${jinc}/${pimd}"; break; fi

           done

           if test -z "${jmdinc}"; then

             # ultima-ratio: use find and pray that it works

             jmdinc=`find "${jinc}/" -name jni_md.h 2> /dev/null |head -n 1 2>/dev/null`

             if test -n "${jmdinc}"; then jmdinc=`dirname "${jmdinc}"`; fi

           fi

           if test -n "${jmdinc}"; then

             if test "${jmdinc}" != "${jinc}/."; then

               JAVA_CPPFLAGS="${JAVA_CPPFLAGS} -I${jmdinc}"

             fi

           fi

	   JAVA_CPPFLAGS=`echo ${JAVA_CPPFLAGS} | ${SED-sed} -e s:${JAVA_HOME}:\$\(JAVA_HOME\):g`

        fi

fi

if test -n "${add_java_libs}"; then JAVA_LIBS="${JAVA_LIBS} ${add_java_libs}"; fi

## honor user overrides

acx_custom_java_libs=no

if test "${custom_JAVA_LIBS}" != '~autodetect~'; then

  JAVA_LIBS="${custom_JAVA_LIBS}"

  JAVA_LIBS0=`echo ${JAVA_LIBS} | ${SED-sed} -e s:${JAVA_HOME}:\$\(JAVA_HOME\):g`

  acx_custom_java_libs=yes

fi

if test "${custom_JAVA_CPPFLAGS}" != '~autodetect~'; then

  JAVA_CPPFLAGS="${custom_JAVA_CPPFLAGS}"

fi

if test "${custom_JAVA_LD_LIBRARY_PATH}" != '~autodetect~'; then

  JAVA_LD_LIBRARY_PATH="${custom_JAVA_LD_LIBRARY_PATH}"

  JAVA_LD_LIBRARY_PATH_SH=`echo ${JAVA_LD_LIBRARY_PATH}|${SED-sed} -e 's:$(JAVA_HOME):\$\{JAVA_HOME\}:g'`

fi

## Do cpmpile test in the temporary dir

wd=${PWD}

cd "${tempdir}"

echo

echo "trying to compile and link a JNI program "

echo "detected JNI cpp flags    : ${JAVA_CPPFLAGS}"

echo "detected JNI linker flags : ${JAVA_LIBS}"

cat <<_ACEOF >conftest.c

#include <jni.h>

int main(void) {

    JNI_CreateJavaVM(0, 0, 0);

    return 0;

}

_ACEOF

JAVA_CPPFLAGS1=`echo ${JAVA_CPPFLAGS}|${SED-sed} -e 's:$(JAVA_HOME):'"${JAVA_HOME}:g"`

JAVA_LIBS1=`echo ${JAVA_LIBS}|${SED-sed} -e 's:$(JAVA_HOME):'"${JAVA_HOME}:g"`

cat <<_ACEOF >Makevars

PKG_CPPFLAGS = ${JAVA_CPPFLAGS1}

PKG_LIBS = ${JAVA_LIBS1}

_ACEOF

## in case e.g. -k was passed in the environment

MAKEFLAGS=

export MAKEFLAGS

${R_HOME}/bin/R CMD SHLIB conftest.c

ac_status=$?

if test $ac_status != 0; then

  echo "Unable to compile a JNI program"

  JAVA_LD_LIBRARY_PATH=

  JAVA_LIBS=

  JAVA_CPPFLAGS=

fi

rm -f conftest.c conftest.o conftest.so Makevars

cd ${wd}

rm -Rf "${tempdir}"

echo ""

if test "${export_vars}" = yes; then

    ## we have to re-substitute $(JAVA_HOME), 

    ## otherwise it will be replaced by R's Makeconf setting

    ## which is highly likely different and thus not intended

    JAVA_LD_LIBRARY_PATH=`echo ${JAVA_LD_LIBRARY_PATH}|${SED-sed} -e 's:$(JAVA_HOME):'"${JAVA_HOME}:g"`

    JAVA_CPPFLAGS=`echo ${JAVA_CPPFLAGS}|${SED-sed} -e 's:$(JAVA_HOME):'"${JAVA_HOME}:g"`

    JAVA_LIBS=`echo ${JAVA_LIBS}|${SED-sed} -e 's:$(JAVA_HOME):'"${JAVA_HOME}:g"`

    export JAVA_HOME JAVA JAVAC JAVAH JAR JAVA_LIBS JAVA_CPPFLAGS JAVA_LD_LIBRARY_PATH

    echo "The following Java variables have been exported:"

    echo "JAVA_HOME JAVA JAVAC JAVAH JAR JAVA_LIBS JAVA_CPPFLAGS JAVA_LD_LIBRARY_PATH"

    test -z "${run_prog}" && test -n "${SHELL}" && run_prog="${SHELL}"

    test -z "${run_prog}" && run_prog=/bin/sh

    echo "Running: ${run_prog}"

    ${run_prog}

    exit 0

fi

echo ""

echo "JAVA_HOME        : ${JAVA_HOME}"

echo "Java library path: ${JAVA_LD_LIBRARY_PATH}"

echo "JNI cpp flags    : ${JAVA_CPPFLAGS}"

echo "JNI linker flags : ${JAVA_LIBS}"

test "${dry_run}" = yes && exit 0

echo "Updating Java configuration in ${R_HOME}"

## We update both the base and arch-specific versions as etc/Makefile

## copies the first to the second (only the second is used).

if test -n "${R_ARCH}"; then

  files="${R_HOME}/etc/Makeconf ${R_HOME}/etc/ldpaths ${R_HOME}/etc${R_ARCH}/Makeconf ${R_HOME}/etc${R_ARCH}/ldpaths"

else

  files="${R_HOME}/etc/Makeconf ${R_HOME}/etc/ldpaths"

fi

for file in $files; do

    ${SED-sed} -e "s|JAVA =.\{0,\}|JAVA = $JAVA|" -e "s|JAVA_HOME =.\{0,\}|JAVA_HOME = ${JAVA_HOME}|" -e "s|: \${JAVA_HOME=.\{1,\}|: \${JAVA_HOME=${JAVA_HOME}}|" -e "s|: \${R_JAVA_LD_LIBRARY_PATH=.\{1,\}|: \${R_JAVA_LD_LIBRARY_PATH=${JAVA_LD_LIBRARY_PATH_SH}}|" -e "s|JAVA_LIBS =.\{0,\}|JAVA_LIBS = ${JAVA_LIBS}|g" -e "s|JAVA_LD_LIBRARY_PATH =.\{0,\}|JAVA_LD_LIBRARY_PATH = ${JAVA_LD_LIBRARY_PATH}|" -e "s|JAVAC =.\{0,\}|JAVAC = $JAVAC|" -e "s|JAVAH =.\{0,\}|JAVAH = $JAVAH|" -e "s|JAR =.\{0,\}|JAR = $JAR|" -e "s|JAVA_CPPFLAGS =.\{0,\}|JAVA_CPPFLAGS = ${JAVA_CPPFLAGS}|g"  "${file}" > "${file}.new"

    if test -f "${file}.new"; then

	mv "${file}.new" "${file}"

    else

	echo "*** cannot create ${file}.new~*** Please run as root if required.~" | ${SED-sed} -e 'y/~/\n/' >&2

	exit 1

    fi

done

echo "Done."

echo ''

### Local Variables: ***

### mode: sh ***

### sh-indentation: 2 ***

### End: ***