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dnl -*- autoconf -*-
dnl Process this file with autoconf to produce a configure script.

AC_PREREQ(2.63)
dnl Update version here and below at LIB_CURRENT, ..., if needed.
AC_INIT(libdap, 3.19.1, opendap-tech@opendap.org)
AC_DEFINE(DAP_PROTOCOL_VERSION, ["4.0"], [Highest DAP version implemented?])
AC_SUBST(DAP_PROTOCOL_VERSION)

AC_CONFIG_SRCDIR([Connect.cc])
AC_CONFIG_AUX_DIR(conf)
AC_CONFIG_HEADERS([config.h dods-datatypes-config.h xdr-datatypes-config.h])
AC_CONFIG_MACRO_DIR([conf])

AM_INIT_AUTOMAKE
AC_CONFIG_TESTDIR(tests, [.])

AC_DEFINE(CNAME, "libdap", [What sort of HTTP client is this?])
AC_DEFINE_UNQUOTED(CVER, "$PACKAGE_VERSION", [Client version number])
AC_DEFINE_UNQUOTED(DVR, "libdap/$PACKAGE_VERSION", [Client name and version combined])
AC_SUBST(DVR)

PACKAGE_MAJOR_VERSION=`echo $PACKAGE_VERSION | sed 's@^\([[0-9]]\)*\.\([[0-9]]*\)\.\([[0-9]]*\)$@\1@'`
PACKAGE_MINOR_VERSION=`echo $PACKAGE_VERSION | sed 's@^\([[0-9]]\)*\.\([[0-9]]*\)\.\([[0-9]]*\)$@\2@'`
PACKAGE_SUBMINOR_VERSION=`echo $PACKAGE_VERSION | sed 's@^\([[0-9]]\)*\.\([[0-9]]*\)\.\([[0-9]]*\)$@\3@'`
AC_MSG_NOTICE(Package Major Version:     $PACKAGE_MAJOR_VERSION)
AC_MSG_NOTICE(Package Minor Version:     $PACKAGE_MINOR_VERSION)
AC_MSG_NOTICE(Package SubMinor Version:  $PACKAGE_SUBMINOR_VERSION)
AC_SUBST(PACKAGE_MAJOR_VERSION)
AC_SUBST(PACKAGE_MINOR_VERSION)
AC_SUBST(PACKAGE_SUBMINOR_VERSION)

dnl flags for the compilers and linkers - set these before locating the
dnl actual tools since some of the AC_PROG macros set these `flag variables'
dnl to default values otherwise.

AC_CANONICAL_HOST
AC_SUBST(host)

dnl How to set these SO variables:
dnl No interfaces changed, only implementations (good): ==> Increment REVISION.
dnl Interfaces added, none removed (good): ==> Increment CURRENT,
dnl increment AGE, set REVISION to 0.
dnl Interfaces removed or changed (BAD, breaks upward compatibility):
dnl ==> Increment CURRENT, set AGE and REVISION to 0.

DAPLIB_CURRENT=25
DAPLIB_AGE=0
DAPLIB_REVISION=1
AC_SUBST(DAPLIB_CURRENT)
AC_SUBST(DAPLIB_AGE)
AC_SUBST(DAPLIB_REVISION)

LIBDAP_VERSION="$DAPLIB_CURRENT:$DAPLIB_REVISION:$DAPLIB_AGE"
AC_SUBST(LIBDAP_VERSION)

CLIENTLIB_CURRENT=7
CLIENTLIB_AGE=1
CLIENTLIB_REVISION=7
AC_SUBST(CLIENTLIB_CURRENT)
AC_SUBST(CLIENTLIB_AGE)
AC_SUBST(CLIENTLIB_REVISION)

CLIENTLIB_VERSION="$CLIENTLIB_CURRENT:$CLIENTLIB_REVISION:$CLIENTLIB_AGE"
AC_SUBST(CLIENTLIB_VERSION)

SERVERLIB_CURRENT=13
SERVERLIB_AGE=6
SERVERLIB_REVISION=7
AC_SUBST(SERVERLIB_CURRENT)
AC_SUBST(SERVERLIB_AGE)
AC_SUBST(SERVERLIB_REVISION)

SERVERLIB_VERSION="$SERVERLIB_CURRENT:$SERVERLIB_REVISION:$SERVERLIB_AGE"
AC_SUBST(SERVERLIB_VERSION)

dnl Checks for programs.
AC_PROG_AWK
AC_PROG_CXX
AC_PROG_CC

dnl Call this gnulib macro right after a working C Compiler is found
gl_EARLY

dnl echo "CC = $CC"
AS_IF([test x$CC = xgcc],
      [AM_CONDITIONAL([COMPILER_IS_GCC],[true])],
      [AM_CONDITIONAL([COMPILER_IS_GCC],[false])])

dnl AC_PROG_YACC
dnl AC_PROG_LEX
AM_PROG_LEX
AC_PROG_INSTALL
AC_PROG_LN_S
AC_PROG_MAKE_SET
AC_PROG_LIBTOOL

dnl We really need bison and not yacc. If you use AC_PROG_YACC, the resulting 
dnl Makefile will call bison -y which doesn't know how to make the parsers 
dnl we require. jhrg 6/15/05
AC_CHECK_PROG(YACC,[bison],[bison])

dnl We have found bison; get its version
bison_version=`bison --version | sed -n '/^bison.*/p' | sed 's@.* \(.*\)@\1@'`

AC_MSG_CHECKING([for bison 3.0])

# This was used to set a conditional in the d4_ce/Makefile.am to build
# the DAP4 parsers using bison 3 or get pre-built sources from a set
# of template files. That didn't work on some linux machines, so bison
# 3 is a requirement for building until that gets sorted out. jhrg 4/5/15
dnl AS_VERSION_COMPARE(["$bison_version"], ["3.0"], 
dnl 	[AM_CONDITIONAL([BISON3], [false])],
dnl 	[AM_CONDITIONAL([BISON3], [true])],
dnl 	[AM_CONDITIONAL([BISON3], [true])])
        
AS_VERSION_COMPARE(["$bison_version"], ["3.0"], 
	[AC_MSG_ERROR([not found])],
	[ ],
	[ ])

AC_MSG_RESULT([found vesion $bison_version])

dnl Checks for header files.
AC_HEADER_DIRENT
AC_HEADER_STDC
AC_HEADER_SYS_WAIT

AC_CHECK_HEADERS_ONCE([fcntl.h malloc.h memory.h stddef.h stdlib.h string.h strings.h unistd.h pthread.h])
AC_CHECK_HEADERS_ONCE([sys/param.h sys/time.h])
AC_CHECK_HEADERS_ONCE([netinet/in.h])

dnl AC_CHECK_HEADERS_ONCE([uuid/uuid.h uuid.h])
dnl Do this because we have had a number of problems with the UUID header/library
AC_CHECK_HEADERS([uuid/uuid.h],[found_uuid_uuid_h=true],[found_uuid_uuid_h=false])
AC_CHECK_HEADERS([uuid.h],[found_uuid_h=true],[found_uuid_h=false])

AS_IF([test $found_uuid_uuid_h = true -o $found_uuid_h = true], [], [AC_MSG_ERROR([Could not find uuid.h])])

dnl Checks for typedefs, structures, and compiler characteristics.
AC_C_CONST
AC_C_INLINE
AC_TYPE_SIZE_T
AC_CHECK_MEMBERS([struct stat.st_blksize])
AC_HEADER_TIME
AC_STRUCT_TM
AC_C_VOLATILE
AC_C_BIGENDIAN

# This is used byt eh DMR tests which must choose the correct set of baselines
# based on word order given that DAP4 uses 'reader make right' and thus the 
# DAP4 data responses are different for different word order machines. jhrg 9/29/15
AS_IF([test $ac_cv_c_bigendian = yes], [ac_word_order=big-endian], [ac_word_order=little-endian])
AC_SUBST([ac_word_order])
        
DODS_CHECK_SIZES

AC_ARG_ENABLE([runtime-endian-check],
    AC_HELP_STRING([--enable-runtime-endian-check], [Enable runtime tests for big- or little-endian byte order (default is NO)])
)

AS_IF([test "x$enable_runtime_endian_check" = "xyes"], [
    dnl Do the stuff needed for enabling the feature
    AC_DEFINE([COMPUTE_ENDIAN_AT_RUNTIME], 1, [Should a function (run-time) be used to determine the byte order?])
])

# Checks for library functions.

dnl using AC_CHECK_FUNCS does not run macros from gnulib.
AC_CHECK_FUNCS([alarm atexit bzero dup2 getcwd getpagesize localtime_r memmove memset pow putenv setenv strchr strerror strtol strtoul timegm mktime])

gl_SOURCE_BASE(gl)
gl_M4_BASE(gl/m4)
gl_MODULES(regex btyeswap)

gl_INIT

AC_ARG_WITH(curl,[  --with-curl=PFX   Prefix where curl/libcurl is installed (optional). This will override pkgconfig, etc.],
            with_curl_prefix="$withval", with_curl_prefix="")

dnl I wrote these checks because we need the *-config scripts to build, so 
dnl the AC_CHECK_LIB macro is not needed.

curlprivatereq=
curlprivatelibs=
curl_set=

if test -n "$with_curl_prefix" -a -x $with_curl_prefix/bin/curl-config
then
    AC_MSG_NOTICE([Using $with_curl_prefix as the curl prefix directory.])
    CURL_LIBS="`$with_curl_prefix/bin/curl-config --libs`"
    CURL_STATIC_LIBS=$CURL_LIBS
    curlprivatelibs="`$with_curl_prefix/bin/curl-config --libs`"
    CURL_CFLAGS="`$with_curl_prefix/bin/curl-config --cflags`"
    curl_set="yes"
elif test -n "$with_curl_prefix"
then
    AC_MSG_ERROR([You set the curl-prefix directory to $with_curl_prefix, but curl-config is not there.])
fi

if test -z "$curl_set"
then
    # curlprivatereq=
    # curlprivatelibs=
    libdap_pkgconfig_libcurl=yes
    libdap_libcurl_module='libcurl >= 7.19.0'
    PKG_CHECK_MODULES([CURL],[$libdap_libcurl_module],,
        [libdap_pkgconfig_libcurl=no])
    AC_MSG_CHECKING([for libcurl])
    
    if test $libdap_pkgconfig_libcurl = 'yes'
    then
	   curlprivatereq=$libdap_libcurl_module
	   CURL_STATIC_LIBS="`$PKG_CONFIG --static --libs libcurl`"
	   AC_MSG_RESULT([yes; used pkg-config])
    elif curl-config --version > /dev/null 2>&1
    then
	   version_libcurl=`curl-config --version | sed 's@libcurl \(.*\)@\1@'`

       AS_VERSION_COMPARE(["$version_libcurl"], ["7.19.0"], 
                [AC_MSG_ERROR([I could not find libcurl 7.19.0 or newer, found $version_libcurl])])
        
	   CURL_LIBS="`curl-config --libs`"
	   CURL_STATIC_LIBS=$CURL_LIBS
	   curlprivatelibs="`curl-config --libs`"
	   CURL_CFLAGS="`curl-config --cflags`"
	   AC_MSG_RESULT([yes; used curl-config and found version $version_libcurl])
    else
	   AC_MSG_ERROR([I could not find libcurl])
    fi
fi

AC_SUBST([curlprivatereq])
AC_SUBST([curlprivatelibs])
AC_SUBST([CURL_LIBS])
AC_SUBST([CURL_STATIC_LIBS])
AC_SUBST([CURL_CFLAGS])

AC_ARG_WITH(xml2,[  --with-xml2=PFX   Prefix where libxml2 is installed (optional). This will override pkgconfig, etc.],
            with_xml2_prefix="$withval", with_xml2_prefix="")

xmlprivatereq=
xmlprivatelibs=
xml_set=

if test -n "$with_xml2_prefix" -a -x $with_xml2_prefix/bin/xml2-config
then
    AC_MSG_NOTICE([Using $with_xml2_prefix as the libxml2 prefix directory.])
    XML2_LIBS="`$with_xml2_prefix/bin/xml2-config --libs`"
    dnl XML2_STATIC_LIBS=$XML2_LIBS
    xmlprivatelibs="`$with_xml2_prefix/bin/xml2-config --libs`"
    XML2_CFLAGS="`$with_xml2_prefix/bin/xml2-config --cflags`"
    xml_set="yes"
elif test -n "$with_xml2_prefix"
then
    AC_MSG_ERROR([You set the libxml2 prefix directory to $with_xml2_prefix, but xml2-config is not there.])
fi

if test -z "$xml_set"
then
libdap_pkgconfig_libxml2=yes
libdap_libxml2_module='libxml-2.0 >= 2.7.0'
PKG_CHECK_MODULES([XML2],[$libdap_libxml2_module], ,[libdap_pkgconfig_libxml2=no])
AC_MSG_CHECKING([for libxml2])
if test $libdap_pkgconfig_libxml2 = 'yes'
then
	xmlprivatereq=$libdap_libxml2_module
	dnl XML2_STATIC_LIBS="`$PKG_CONFIG --static --libs libxml-2.0`"
	XML2_LIBS="`$PKG_CONFIG --libs libxml-2.0`"
	AC_MSG_RESULT([yes; used pkg-config])
elif xml2-config --version > /dev/null 2>&1
then
	version_libxml2=`xml2-config --version`

        AS_VERSION_COMPARE(["$version_libxml2"], ["2.7.0"], 
                [AC_MSG_ERROR([I could not find libxml2 2.7.0 or newer])])
        
	XML2_LIBS="`xml2-config --libs`"
	dnl XML2_STATIC_LIBS=$XML2_LIBS
	XML2_CFLAGS="`xml2-config --cflags`"
	xmlprivatelibs="`xml2-config --libs `"
	dnl `
	AC_MSG_RESULT([yes; used xml2-config and found version $version_libxml2])
else
	AC_MSG_ERROR([I could not find ml2-config])
fi
fi

AC_SUBST([xmlprivatereq])
AC_SUBST([xmlprivatelibs])
AC_SUBST([XML2_LIBS])
dnl AC_SUBST([XML2_STATIC_LIBS])
AC_SUBST([XML2_CFLAGS])

AC_CHECK_LIB([pthread], [pthread_kill], 
	[PTHREAD_LIBS="-lpthread"],
	[AC_MSG_ERROR([I could not find pthreads])])
AC_SUBST([PTHREAD_LIBS])

AC_CHECK_LIB([uuid], [uuid_generate], 
	[UUID_LIBS="-luuid"],
	[UUID_LIBS=""])
AC_SUBST([UUID_LIBS])

AM_PATH_CPPUNIT(1.12.0,
	[AM_CONDITIONAL([CPPUNIT], [true])],
	[
	    PKG_CHECK_MODULES(CPPUNIT, [cppunit >= 1.12.0],
		[AM_CONDITIONAL([CPPUNIT], [true])],
		[AM_CONDITIONAL([CPPUNIT], [false])]
	    )
	]
)

DODS_DEBUG_OPTION

dnl See util.cc:dods_root()
AS_IF([test "$prefix" = "NONE"],
      [AC_DEFINE([LIBDAP_ROOT], ["/usr/local"], [Set to the prefix directory])],
	  [AC_DEFINE_UNQUOTED([LIBDAP_ROOT], ["$prefix"], [Set to the prefix directory])])

dnl By default, DAP4 is enabled. Use this to disable. jhrg 5/12/15
AC_ARG_ENABLE([dap4], 
    [AC_HELP_STRING([--enable-dap4], [Enable DAP4 types and responses (default is Yes)])],
    [enable_dap4=${enableval}], [enable_dap4=yes])

AS_IF([test x$enable_dap4 = xyes], [
    dnl Do the stuff needed for enabling the feature
    dnl echo "Defining DAP4! "
    AC_DEFINE([DAP4], 1, [Should DAP4 support be enabled?])
    AM_CONDITIONAL([DAP4_DEFINED], [true]) ],
    [ dnl else enable_dap4 is false
    AM_CONDITIONAL([DAP4_DEFINED], [false])
])

AC_ARG_ENABLE([developer],
	[AS_HELP_STRING([--enable-developer],
				    [Build a debug (-g3 -O0) version of this code and include assert() calls in the code (default is no)])],
    [build_developer=${enableval}],
    [build_developer=no])

AS_IF([test x$build_developer = xyes],
      [AC_MSG_NOTICE([Building developer version])
       AM_CONDITIONAL([BUILD_DEVELOPER], [true])],
      [AC_MSG_NOTICE([Not building developer version])
       AM_CONDITIONAL([BUILD_DEVELOPER], [false])
       AC_DEFINE([NDEBUG], [1], [Define this to suppres assert() calls.])])

DODS_GCOV_VALGRIND

dnl autoheader macros; tack some text at the top and bottom of config_dap.h.in

AH_TOP([#ifndef _config_h
#define _config_h])

AH_BOTTOM([#endif /* _config_h */])

AC_CONFIG_FILES([Makefile
                 libdap.pc
                 libdapclient.pc
                 libdapserver.pc
                 main_page.doxygen
	             doxy.conf
	             abi_checker.xml

                 gl/Makefile
                 d4_ce/Makefile
                 d4_function/Makefile
                 
                 tests/Makefile
                 tests/atlocal
                 
                 unit-tests/Makefile
                 unit-tests/cache-testsuite/Makefile])

AC_CONFIG_FILES([dap-config], [chmod +x dap-config]) 
	
AC_OUTPUT