Tomcat example source code file (tcnative.m4)

This example Tomcat source code file (tcnative.m4) is included in the DevDaily.com "Java Source Code Warehouse" project. The intent of this project is to help you "Learn Java by Example" ^TM.

Java - Tomcat tags/keywords

ac_defun, ac_msg_checking, ac_msg_error, ac_msg_error, ac_msg_result, ac_msg_result, java_home, java_home, java_os, java_platform, java_platform, license, openssl_version_number, tcn_openssl_libs

The Tomcat tcnative.m4 source code

#
# Licensed to the Apache Software Foundation (ASF) under one or more
# contributor license agreements.  See the NOTICE file distributed with
# this work for additional information regarding copyright ownership.
# The ASF licenses this file to You under the Apache License, Version 2.0
# (the "License"); you may not use this file except in compliance with
# the License.  You may obtain a copy of the License at
#
#     http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
#

dnl
dnl TCN_FIND_APR: figure out where APR is located
dnl
AC_DEFUN(TCN_FIND_APR,[

  dnl use the find_apr.m4 script to locate APR. sets apr_found and apr_config
  APR_FIND_APR(,,,[1])
  if test "$apr_found" = "no"; then
    AC_MSG_ERROR(APR could not be located. Please use the --with-apr option.)
  fi

  sapr_pversion="`$apr_config --version`"
  if test -z "$sapr_pversion"; then
    AC_MSG_ERROR(APR config could not be located. Please use the --with-apr option.)
  fi
  sapr_version="`echo $sapr_pversion|sed -e 's/\([a-z]*\)$/.\1/'`"
  tc_save_IFS=$IFS; IFS=.; set $sapr_version; IFS=$tc_save_IFS
  if test "${1}" -lt "1"; then
    AC_MSG_ERROR(You need APR version 1.2.1 or newer installed.)
  else
    if test "${2}" -lt "2"; then
      AC_MSG_ERROR(You need APR version 1.2.1 or newer installed.)
    fi
  fi

  APR_BUILD_DIR="`$apr_config --installbuilddir`"

  dnl make APR_BUILD_DIR an absolute directory (we'll need it in the
  dnl sub-projects in some cases)
  APR_BUILD_DIR="`cd $APR_BUILD_DIR && pwd`"

  APR_INCLUDES="`$apr_config --includes`"
  APR_LIBS="`$apr_config --link-libtool --libs`"
  APR_SO_EXT="`$apr_config --apr-so-ext`"
  APR_LIB_TARGET="`$apr_config --apr-lib-target`"

  AC_SUBST(APR_INCLUDES)
  AC_SUBST(APR_LIBS)
  AC_SUBST(APR_BUILD_DIR)
])

dnl --------------------------------------------------------------------------
dnl TCN_JDK
dnl
dnl Detection of JDK location and Java Platform (1.2, 1.3, 1.4, 1.5, 1.6)
dnl result goes in JAVA_HOME / JAVA_PLATFORM (2 -> 1.2 and higher)
dnl 
dnl --------------------------------------------------------------------------
AC_DEFUN(
  [TCN_FIND_JDK],
  [
    tempval=""
    AC_MSG_CHECKING([for JDK location (please wait)])
    if test -n "${JAVA_HOME}" ; then
      JAVA_HOME_ENV="${JAVA_HOME}"
    else
      JAVA_HOME_ENV=""
    fi

    JAVA_HOME=""
    JAVA_PLATFORM=""

    AC_ARG_WITH(
      [java-home],
      [  --with-java-home=DIR     Location of JDK directory.],
      [

      # This stuff works if the command line parameter --with-java-home was
      # specified, so it takes priority rightfully.
  
      tempval=${withval}

      if test ! -d "${tempval}" ; then
          AC_MSG_ERROR(Not a directory: ${tempval})
      fi
  
      JAVA_HOME=${tempval}
      AC_MSG_RESULT(${JAVA_HOME})
    ],
    [
      # This works if the parameter was NOT specified, so it's a good time
      # to see what the enviroment says.
      # Since Sun uses JAVA_HOME a lot, we check it first and ignore the
      # JAVA_HOME, otherwise just use whatever JAVA_HOME was specified.

      if test -n "${JAVA_HOME_ENV}" ; then
        JAVA_HOME=${JAVA_HOME_ENV}
        AC_MSG_RESULT(${JAVA_HOME_ENV} from environment)
      fi
    ])

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

      # Oh well, nobody set neither JAVA_HOME nor JAVA_HOME, have to guess
      # The following code is based on the code submitted by Henner Zeller
      # for ${srcdir}/src/scripts/package/rpm/ApacheJServ.spec
      # Two variables will be set as a result:
      #
      # JAVA_HOME
      # JAVA_PLATFORM
      AC_MSG_CHECKING([Try to guess JDK location])

      for JAVA_PREFIX in /usr/local /usr/local/lib /usr /usr/lib /opt /usr/java ; do

        for JAVA_PLATFORM in 6 5 4 3 2 ; do

          for subversion in .9 .8 .7 .6 .5 .4 .3 .2 .1 "" ; do

            for VARIANT in IBMJava2- java java- jdk jdk-; do
              GUESS="${JAVA_PREFIX}/${VARIANT}1.${JAVA_PLATFORM}${subversion}"
dnl           AC_MSG_CHECKING([${GUESS}])
              if test -d "${GUESS}/bin" & test -d "${GUESS}/include" ; then
                JAVA_HOME="${GUESS}"
                AC_MSG_RESULT([${GUESS}])
                break
              fi
            done

            if test -n "${JAVA_HOME}" ; then
              break;
            fi

          done

          if test -n "${JAVA_HOME}" ; then
            break;
          fi

        done

        if test -n "${JAVA_HOME}" ; then
          break;
        fi

      done

      if test ! -n "${JAVA_HOME}" ; then
        AC_MSG_ERROR(can't locate a valid JDK location)
      fi

    fi

    if test -n "${JAVA_PLATFORM}"; then
      AC_MSG_RESULT(Java Platform detected - 1.${JAVA_PLATFORM})
    else
      AC_MSG_CHECKING(Java platform)
    fi

    AC_ARG_WITH(java-platform,
     [  --with-java-platform[=2] Force the Java platorm
                                 (value is 1 for 1.1.x or 2 for 1.2.x or greater)],
     [
        case "${withval}" in
          "1"|"2")
            JAVA_PLATFORM=${withval}
            ;;
          *)
            AC_MSG_ERROR(invalid java platform provided)
            ;;
        esac
     ],
     [
        if test -n "${JAVA_PLATFORM}"; then
          AC_MSG_RESULT(Java Platform detected - 1.${JAVA_PLATFORM})
        else
          AC_MSG_CHECKING(Java platform)
        fi
     ])

     AC_MSG_RESULT(${JAVA_PLATFORM})

    unset tempval
  ])


AC_DEFUN(
  [TCN_FIND_JDK_OS],
  [
    tempval=""
    JAVA_OS=""
    AC_ARG_WITH(os-type,
      [  --with-os-type[=SUBDIR]  Location of JDK os-type subdirectory.],
      [
        tempval=${withval}

        if test ! -d "${JAVA_HOME}/${tempval}" ; then
          AC_MSG_ERROR(Not a directory: ${JAVA_HOME}/${tempval})
        fi

        JAVA_OS = ${tempval}
      ],
      [   
        AC_MSG_CHECKING(os_type directory)
        JAVA_OS=NONE
        if test -f ${JAVA_HOME}/${JAVA_INC}/jni_md.h; then
          JAVA_OS=""
        else
          for f in ${JAVA_HOME}/${JAVA_INC}/*/jni_md.h; do
            if test -f $f; then
              JAVA_OS=`dirname ${f}`
              JAVA_OS=`basename ${JAVA_OS}`
              echo " ${JAVA_OS}"
            fi
          done
          if test "${JAVA_OS}" = "NONE"; then
            AC_MSG_RESULT(Cannot find jni_md.h in ${JAVA_HOME}/${OS})
            AC_MSG_ERROR(You should retry --with-os-type=SUBDIR)
          fi
        fi
      ])
  ])

dnl check for sableVM
dnl (copied from daemon/src/native/unix/support/apjava.m4)
AC_DEFUN(
  [TCN_SABLEVM],
  [
  if test x"$JAVA_HOME" != x
  then
    AC_PATH_PROG(SABLEVM,sablevm,NONE,$JAVA_HOME/bin)
    if test "$SABLEVM" != "NONE"
    then
      AC_MSG_RESULT([Using sableVM: $SABLEVM])
      CFLAGS="$CFLAGS -DHAVE_SABLEVM"
      NEED_JNI_MD=no
    fi
  fi
  ])
dnl check for IBM J9VM
AC_DEFUN(
  [TCN_J9VM],
  [
  if test x"$JAVA_HOME" != x
  then
    J9VM=`$JAVA_HOME/bin/java -version 2>&1 | grep J9VM`
    if test x"$J9VM" != x
    then
      AC_MSG_RESULT([Using J9VM: $J9VM])
      NEED_JNI_MD=no
    fi
  fi
  ])

dnl TCN_HELP_STRING(LHS, RHS)
dnl Autoconf 2.50 can not handle substr correctly.  It does have 
dnl AC_HELP_STRING, so let's try to call it if we can.
dnl Note: this define must be on one line so that it can be properly returned
dnl as the help string.
AC_DEFUN(TCN_HELP_STRING,[ifelse(regexp(AC_ACVERSION, 2\.1), -1, AC_HELP_STRING($1,$2),[  ]$1 substr([                       ],len($1))$2)])dnl

dnl
dnl TCN_CHECK_SSL_TOOLKIT
dnl
dnl Configure for the detected openssl toolkit installation, giving
dnl preference to "--with-ssl=<path>" if it was specified.
dnl
AC_DEFUN(TCN_CHECK_SSL_TOOLKIT,[
OPENSSL_WARNING=
AC_MSG_CHECKING(for OpenSSL library)
AC_ARG_WITH(ssl,
[  --with-ssl[=PATH]   Build with OpenSSL [yes|no|path]],
    use_openssl="$withval", use_openssl="auto")

openssldirs="/usr /usr/local /usr/local/ssl /usr/pkg /usr/sfw"
if test "$use_openssl" = "auto"
then
    for d in $openssldirs
    do
        if test -f $d/include/openssl/opensslv.h
        then
            use_openssl=$d
            break
        fi
    done
fi
case "$use_openssl" in
    no)
        AC_MSG_RESULT(no)
        TCN_OPENSSL_INC=""
        USE_OPENSSL=""
        ;;
    auto)
        TCN_OPENSSL_INC=""
        USE_OPENSSL=""
        AC_MSG_RESULT(not found)
        ;;
    *)
        if test "$use_openssl" = "yes"
        then
            # User did not specify a path - guess it
            for d in $openssldirs
            do
                if test -f $d/include/openssl/opensslv.h
                then
                    use_openssl=$d
                    break
                fi
            done
            if test "$use_openssl" = "yes"
            then
                AC_MSG_RESULT(not found)
                AC_MSG_ERROR(
[OpenSSL was not found in any of $openssldirs; use --with-ssl=/path])
            fi
        fi
        USE_OPENSSL='-DOPENSSL'

        if test "$use_openssl" = "/usr"
        then
            TCN_OPENSSL_INC=""
            TCN_OPENSSL_LIBS="-lssl -lcrypto"
        else
            TCN_OPENSSL_INC="-I$use_openssl/include"
            case $host in
            *-solaris*)
                TCN_OPENSSL_LIBS="-L$use_openssl/lib -R$use_openssl/lib -lssl -lcrypto"
                ;;
            *-hp-hpux*)
                TCN_OPENSSL_LIBS="-L$use_openssl/lib -Wl,+b: -lssl -lcrypto"
                ;;
            *linux*)
                TCN_OPENSSL_LIBS="-L$use_openssl/lib -Wl,-rpath,$use_openssl/lib -lssl -lcrypto"
                ;;
            *)
                TCN_OPENSSL_LIBS="-L$use_openssl/lib -lssl -lcrypto"
                ;;
            esac
        fi
        AC_MSG_RESULT(using openssl from $use_openssl/lib and $use_openssl/include)

        saved_cflags="$CFLAGS"
        saved_libs="$LIBS"
        CFLAGS="$CFLAGS $TCN_OPENSSL_INC"
        LIBS="$LIBS $TCN_OPENSSL_LIBS"
         
AC_ARG_ENABLE(openssl-version-check,
[AC_HELP_STRING([--enable-openssl-version-check],
        [Check OpenSSL Version @<:@default=yes@:>@])])
case "$enable_openssl_version_check" in
yes|'')
        AC_MSG_CHECKING(OpenSSL library version)
        AC_TRY_RUN([
#include <stdio.h>
#include <openssl/opensslv.h>
int main() {
        if ((OPENSSL_VERSION_NUMBER >= 0x0090701fL &&
         OPENSSL_VERSION_NUMBER < 0x00908000L) ||
         OPENSSL_VERSION_NUMBER >= 0x0090802fL)
            return (0);
    printf("\n\nFound   OPENSSL_VERSION_NUMBER %#010x\n",
        OPENSSL_VERSION_NUMBER);
    printf("Require OPENSSL_VERSION_NUMBER 0x0090701f or greater (0.9.7a)\n"
           "Require OPENSSL_VERSION_NUMBER 0x0090802f or greater (0.9.8a)\n\n");
        return (1);
}
        ],
        [AC_MSG_RESULT(ok)],
        [AC_MSG_RESULT(not compatible)
            OPENSSL_WARNING=yes
        ],
        [AC_MSG_RESULT(assuming target platform has compatible version)])
;;
no)
    AC_MSG_RESULT(Skipped OpenSSL version check)
;;
esac

        AC_MSG_CHECKING(for OpenSSL DSA support)
        if test -f $use_openssl/include/openssl/dsa.h
        then
            AC_DEFINE(HAVE_OPENSSL_DSA)
            AC_MSG_RESULT(yes)
        else
            AC_MSG_RESULT(no)
        fi
        CFLAGS="$saved_cflags"
        LIBS="$saved_libs"
        ;;
esac
if test "x$USE_OPENSSL" != "x"
then
    APR_ADDTO(TCNATIVE_PRIV_INCLUDES, [$TCN_OPENSSL_INC])
    APR_ADDTO(TCNATIVE_LDFLAGS, [$TCN_OPENSSL_LIBS])
    APR_ADDTO(CFLAGS, [-DHAVE_OPENSSL])
fi
])