Revert "add configure check for date_time lib"

This commit breaks MinGW builds; the m4 macros probably need some
improvements there.

This reverts commit 5ed17233.

RepositoryExternal.mk

@@ -273,19 +273,7 @@ endif # SYSTEM_HUNSPELL
 ifeq ($(SYSTEM_BOOST),YES)
 
 define gb_LinkTarget__use_boostdatetime
-$(call gb_LinkTarget_set_include,$(1),\
-	$$(INCLUDE) \
-	$(BOOST_CPPFLAGS) \
-)
-
-$(call gb_LinkTarget_add_ldflags,$(1),\
-	$(BOOST_LDFLAGS) \
-)
-
-$(call gb_LinkTarget_add_libs,$(1),\
-	$(BOOST_DATE_TIME_LIB) \
-)
-
+$(call gb_LinkTarget_add_libs,$(1),-lboost_date_time)
 endef
 
 else # !SYSTEM_BOOST

config_host.mk.in

@@ -22,9 +22,6 @@ export ATL_INCLUDE=@ATL_INCLUDE@
 export ATL_LIB=@ATL_LIB@
 export AWTLIB=@AWTLIB@
 export BARCODE_EXTENSION_PACK=@BARCODE_EXTENSION_PACK@
-export BOOST_CPPFLAGS=@BOOST_CPPFLAGS@
-export BOOST_DATE_TIME_LIB=@BOOST_DATE_TIME_LIB@
-export BOOST_LDFLAGS=@BOOST_LDFLAGS@
 export BSH_JAR=@BSH_JAR@
 export BUILD_DMAKE=@BUILD_DMAKE@
 export BUILD_EPM=@BUILD_EPM@

configure.in

@@ -7318,9 +7318,6 @@ if test "$with_system_boost" = "yes"; then
     fi
     CXXFLAGS=$save_CXXFLAGS
     AC_LANG_POP([C++])
-
-    AX_BOOST_BASE
-    AX_BOOST_DATE_TIME
 else
     AC_MSG_RESULT([internal])
     BUILD_TYPE="$BUILD_TYPE BOOST"

m4/ax_boost_date_time.m4

-# ===========================================================================
-#    http://www.gnu.org/software/autoconf-archive/ax_boost_date_time.html
-# ===========================================================================
-#
-# SYNOPSIS
-#
-#   AX_BOOST_DATE_TIME
-#
-# DESCRIPTION
-#
-#   Test for Date_Time library from the Boost C++ libraries. The macro
-#   requires a preceding call to AX_BOOST_BASE. Further documentation is
-#   available at <http://randspringer.de/boost/index.html>.
-#
-#   This macro calls:
-#
-#     AC_SUBST(BOOST_DATE_TIME_LIB)
-#
-#   And sets:
-#
-#     HAVE_BOOST_DATE_TIME
-#
-# LICENSE
-#
-#   Copyright (c) 2008 Thomas Porschberg <thomas@randspringer.de>
-#   Copyright (c) 2008 Michael Tindal
-#
-#   Copying and distribution of this file, with or without modification, are
-#   permitted in any medium without royalty provided the copyright notice
-#   and this notice are preserved. This file is offered as-is, without any
-#   warranty.
-
-#serial 21
-
-AC_DEFUN([AX_BOOST_DATE_TIME],
-[
-	AC_ARG_WITH([boost-date-time],
-	AS_HELP_STRING([--with-boost-date-time@<:@=special-lib@:>@],
-                   [use the Date_Time library from boost - it is possible to specify a certain library for the linker
-                        e.g. --with-boost-date-time=boost_date_time-gcc-mt-d-1_33_1 ]),
-        [
-        if test "$withval" = "no"; then
-			want_boost="no"
-        elif test "$withval" = "yes"; then
-            want_boost="yes"
-            ax_boost_user_date_time_lib=""
-        else
-		    want_boost="yes"
-		ax_boost_user_date_time_lib="$withval"
-		fi
-        ],
-        [want_boost="yes"]
-	)
-
-	if test "x$want_boost" = "xyes"; then
-        AC_REQUIRE([AC_PROG_CC])
-		CPPFLAGS_SAVED="$CPPFLAGS"
-		CPPFLAGS="$CPPFLAGS $BOOST_CPPFLAGS"
-		export CPPFLAGS
-
-		LDFLAGS_SAVED="$LDFLAGS"
-		LDFLAGS="$LDFLAGS $BOOST_LDFLAGS"
-		export LDFLAGS
-
-        AC_CACHE_CHECK(whether the Boost::Date_Time library is available,
-					   ax_cv_boost_date_time,
-        [AC_LANG_PUSH([C++])
-		 AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[@%:@include <boost/date_time/gregorian/gregorian_types.hpp>]],
-                                   [[using namespace boost::gregorian; date d(2002,Jan,10);
-                                     return 0;
-                                   ]])],
-         ax_cv_boost_date_time=yes, ax_cv_boost_date_time=no)
-         AC_LANG_POP([C++])
-		])
-		if test "x$ax_cv_boost_date_time" = "xyes"; then
-			AC_DEFINE(HAVE_BOOST_DATE_TIME,,[define if the Boost::Date_Time library is available])
-            BOOSTLIBDIR=`echo $BOOST_LDFLAGS | sed -e 's/@<:@^\/@:>@*//'`
-            if test "x$ax_boost_user_date_time_lib" = "x"; then
-                for libextension in `ls $BOOSTLIBDIR/libboost_date_time*.so* $BOOSTLIBDIR/libboost_date_time*.dylib* $BOOSTLIBDIR/libboost_date_time*.a* 2>/dev/null | sed 's,.*/,,' | sed -e 's;^lib\(boost_date_time.*\)\.so.*$;\1;' -e 's;^lib\(boost_date_time.*\)\.dylib.*$;\1;' -e 's;^lib\(boost_date_time.*\)\.a*$;\1;'` ; do
-                     ax_lib=${libextension}
-				    AC_CHECK_LIB($ax_lib, exit,
-                                 [BOOST_DATE_TIME_LIB="-l$ax_lib"; AC_SUBST(BOOST_DATE_TIME_LIB) link_date_time="yes"; break],
-                                 [link_date_time="no"])
-				done
-                if test "x$link_date_time" != "xyes"; then
-                for libextension in `ls $BOOSTLIBDIR/boost_date_time*.dll* $BOOSTLIBDIR/boost_date_time*.a* 2>/dev/null | sed 's,.*/,,' | sed -e 's;^\(boost_date_time.*\)\.dll.*$;\1;' -e 's;^\(boost_date_time.*\)\.a.*$;\1;'` ; do
-                     ax_lib=${libextension}
-				    AC_CHECK_LIB($ax_lib, exit,
-                                 [BOOST_DATE_TIME_LIB="-l$ax_lib"; AC_SUBST(BOOST_DATE_TIME_LIB) link_date_time="yes"; break],
-                                 [link_date_time="no"])
-				done
-                fi
-
-            else
-               for ax_lib in $ax_boost_user_date_time_lib boost_date_time-$ax_boost_user_date_time_lib; do
-				      AC_CHECK_LIB($ax_lib, main,
-                                   [BOOST_DATE_TIME_LIB="-l$ax_lib"; AC_SUBST(BOOST_DATE_TIME_LIB) link_date_time="yes"; break],
-                                   [link_date_time="no"])
-                  done
-
-            fi
-            if test "x$ax_lib" = "x"; then
-                AC_MSG_ERROR(Could not find a version of the library!)
-            fi
-			if test "x$link_date_time" != "xyes"; then
-				AC_MSG_ERROR(Could not link against $ax_lib !)
-			fi
-		fi
-
-		CPPFLAGS="$CPPFLAGS_SAVED"
-	LDFLAGS="$LDFLAGS_SAVED"
-	fi
-])