dnl Invoke autogen.sh to produce a configure script.

AC_INIT(src/sysync/engineinterface.cpp)
AC_CONFIG_MACRO_DIR([m4])
# four digit upstream version, one additional digit for
# Linux/SyncEvolution specific extensions:
AM_INIT_AUTOMAKE(synthesis, 3.4.0.16.1)
AM_CONFIG_HEADER(config.h)
AC_LIBTOOL_DLOPEN

dnl check for programs.
AC_PROG_CXX
AC_PROG_LIBTOOL
AC_PROG_MAKE_SET
AM_PROG_CC_C_O

# --enable-warning=min/max/fatal/none
DK_ARG_ENABLE_WARNINGS([SYNTHESIS_WFLAGS],
                       [-Wall],
                       [-Wall -Wno-unknown-pragmas],
                       [])

dnl Extract PIC flags from libtool configure for libsynthesissdk.a
dnl (makes assumptions about libtool var naming!). Some versions
dnl of libtool use PIC mode automatically for static libraries,
dnl others don't (?!). See "[os-libsynthesis] libsynthesissdk.a built without -fPIC".
PIC_CXXFLAGS="$lt_prog_compiler_pic_CXX"
AC_SUBST(PIC_CXXFLAGS)

AC_ARG_ENABLE(debug-logs,
              AS_HELP_STRING([--debug-logs],
                             [For developers: add links to call location to HTML log files. Depends on Doxygen (for HTML version of source) and g++ (for __PRETTY_FUNCTION__).]),
              enable_debug_logs="$enableval", enable_debug_logs="no")
if test "$enable_debug_logs" = "yes"; then
   AC_DEFINE_UNQUOTED(SYDEBUG_LOCATION, "`pwd`/src/html", [absolute path to Doxygen HTML output])
fi
AM_CONDITIONAL([COND_DOXYGEN], [test "$enable_debug_logs" = "yes"])

dnl All of these libraries have to be compiled and installed
dnl separately. TODO: build bundled sources?
dnl
dnl WARNING: the initial PKG_CHECK_MODULES() must be executed
dnl in all cases (i.e., not depend on an if clause) because
dnl it initializes pkg-config checking.
PKG_CHECK_MODULES(FOOBAR, foobar, [true], [true])

AC_ARG_ENABLE(sqlite,
              AS_HELP_STRING([--enable-sqlite],
                             [enable the sqlite-based ODBC backend, depends on libsqlite3, enabled by default]),
              [enable_sqlite=$enableval],
              [enable_sqlite="yes"])
if test "$enable_sqlite" == "yes"; then
    PKG_CHECK_MODULES(SQLITE3, sqlite3)
    HAVE_SQLITE=1
else
    HAVE_SQLITE=0
fi
AC_DEFINE_UNQUOTED(ONOFF_SQLITE_SUPPORT, $HAVE_SQLITE, [controls whether ODBC backend with libsqlite is enabled])

AC_ARG_ENABLE(regex,
              AS_HELP_STRING([--enable-regex],
                             [enable regular expression support in scripts, depends on libpcre, enabled by default]),
              [enable_regex=$enableval],
              [enable_regex="yes"])
if test "$enable_regex" == "yes"; then
    PKG_CHECK_MODULES(PCRE, libpcre,
                      [HAVE_PCRE=1],
                      [AC_ERROR([libpcre not found, required for --enable-regex])])
    HAVE_PCRE=1
else
    HAVE_PCRE=0
fi
AC_DEFINE_UNQUOTED(ONOFF_REGEX_SUPPORT, $HAVE_PCRE, "regular expressions in scripts")   

AC_CHECK_HEADER(zlib.h, , [AC_ERROR(zlib.h not found.)])
AC_CHECK_HEADER(xmltok/xmlparse.h, have_system_xmltok="yes")
AC_CHECK_HEADER(expat.h, have_system_expat="yes")

dnl libical might be installed stand-alone (upstream)
dnl or bundled with libecal. Upstream is preferred and
dnl thus checked first. libical is optional, so don't
dnl complain if not found.
AC_ARG_ENABLE(libical,
              AS_HELP_STRING([--enable-libical],
                             [use libical (if necessary, the one in libecal) to improve time zone support, enabled by default if necessary libs are found]),
              [enable_libical=$enableval],
              [enable_libical="yes"])
if test "$enable_libical" == "yes"; then
   PKG_CHECK_MODULES(LIBICAL, libical,
                     [AC_DEFINE(HAVE_LIBICAL, 1, "libical available")],
                     [PKG_CHECK_MODULES(LIBECAL, libecal-1.2,
                                        [AC_DEFINE(HAVE_LIBICAL, 1, "libical available")
                                         AC_DEFINE(HAVE_LIBECAL, 1, "libecal available")],
                                         [true])])
fi

AC_ARG_ENABLE(evolution-compatibility,
              AS_HELP_STRING([--enable-evolution-compatibility],
                             [build executables which only call Evolution via dlopen/dlsym: this avoids all hard dependencies on EDS shared objects, but might lead to crashes when their ABI changes]),
              enable_evolution_compatibility="$enableval", enable_evolution_compatibility="no")
if test "$enable_evolution_compatibility" == "yes"; then
   AC_DEFINE(EVOLUTION_COMPATIBILITY, 1, [avoid hard dependency on Evolution shared objects])
   LIBICAL_LIBS=
   LIBECAL_LIBS=
fi

AC_ARG_WITH(xmltok,
        AS_HELP_STRING([--with-xmltok=<builtin|system|path>],
                       [Chooses which xmltok/xmlparse gets used.
                        "builtin" = compile code into libsynthesis.
                        "system" = use header files and libxmlparse from standard search paths.
                        "path" = use header files in "path/include" and libxmlparse in "path/lib".
                        Default is system if header files are found, otherwise builtin.]),
        [ if test "$withval" = "builtin"; then with_xmltok="builtin"
          elif test "$withval" = "system" || test "$withval" = "yes"; then with_xmltok="system"
          else with_xmltok="$withval"
          fi ],
        [ with_xmltok="no" ])

AC_ARG_WITH(expat,
        AS_HELP_STRING([--with-expat=<system|path>],
                       [Choose expat as the XML parser library. Replaces --with-xmltok.
                        "system" = use header files and libexpat from standard search paths.
                        "path" = use header files in "path/include", and libexpat in "path/lib".]),
        [ if test "$withval" = "system" || test "$withval" = "yes"; then with_expat="system"
          else with_expath="$withval"
          fi ],
        [ with_expat="no" ])

if test "$with_xmltok" = "no" && test "$with_expat" = "no"; then
   if test "$have_system_expat" = "yes"; then
      with_expat="yes"
      XMLPARSE_LIBS="-lexpat"
   elif test "$have_system_xmltok" = "yes"; then
      with_xmltok="yes"
      XMLPARSE_LIBS="-lxmlparse"
   else
      with_xmltok="builtin"
   fi
elif test "$with_expat" != "no"; then
   if test "$with_expat" = "system"; then
      if test "$have_system_expat" = "yes"; then XMLPARSE_LIBS="-lexpat"
      else AC_ERROR(expat.h not found.)
      fi
   else # user path
      XMLPARSE_LIBS="-L$with_expat/lib -lexpat"
      XMLPARSE_CFLAGS="-I$with_expat/include"
   fi
   with_expat="yes"
else # with_xmltok
   if test "$with_xmltok" = "system"; then
      if test "$have_system_xmltok" = "yes"; then XMLPARSE_LIBS="-lxmlparse"
      else AC_ERROR(xmltok/xmplarse.h not found.)
      fi
   elif test "$with_xmltok" != "builtin"; then
      XMLPARSE_LIBS="-L$with_xmltok/lib -lxmlparse"
      XMLPARSE_CFLAGS="-I$with_xmltok/include"
   fi
fi

if test "$with_expat" = "yes"; then
   AC_DEFINE(HAVE_EXPAT, 1, [Define to 1 to use expat as XML parser])
elif test "$with_xmltok" != "builtin"; then
   AC_DEFINE(HAVE_SYS_XMLTOK, 1, [Define to 1 use system xmltok as XML parser])
else
   AC_DEFINE(HAVE_BUILTIN_XMLTOK, 1, [Define to 1 use builtin xmltok as XML Parser])
fi

AC_SUBST(XMLPARSE_LIBS)
AC_SUBST(XMLPARSE_CFLAGS)
AM_CONDITIONAL([COND_XMLPARSE], [test "$with_xmltok" = "builtin"])

AC_CHECK_HEADER(stdint.h)

# the autotools SDK always assumes that it is linked against the engine
AC_DEFINE(UIAPI_LINKED, 1, [libsynthesis.a linked statically])
AC_DEFINE(DBAPI_LINKED, 1, [client engine linked statically])
AC_DEFINE(DBAPI_SRV_LINKED, 1, [server engine linked statically])

# determines which object files are needed in the SDK:
# if linking statically, some object files are shared with
# libsynthesis.a
AM_CONDITIONAL([COND_STATIC], [test "$enable_shared" = "no"])

# Disable unconditionally at the moment. Would add dependency of SDK
# on SyncML Toolkit.
#AC_DEFINE(WITHOUT_SAN_1_1, 1,
#          [support for Server Alerted Notifications according to SyncML 1.1])

AC_CONFIG_FILES(Makefile src/Makefile synthesis.pc synthesis-sdk.pc)
AC_OUTPUT