Make build with wagyu the default when protobuf is also enabled

Closes #406

git-svn-id: http://svn.osgeo.org/postgis/trunk@17451 b70326c6-7e19-0410-871a-916f4a2858ee

.travis.yml

@@ -11,7 +11,7 @@ env:
   - tag=pg11-geos37-gdal24-proj52 mode=coverage
   - tag=pg11-geos37-gdal24-proj52 mode=usan_gcc
   - tag=pg11-geos37-gdal24-proj52 mode=usan_clang
-  - tag=pg11-geos37-gdal24-proj52 mode=wagyu
+  - tag=pg11-geos37-gdal24-proj52 mode=nowagyu
   - tag=pg11-geos37-gdal24-proj52 mode=tests
   - tag=pg10-geos36-gdal23-proj49 mode=tests
   - tag=pg96-geos36-gdal22-proj49 mode=tests

NEWS

@@ -1,3 +1,18 @@
+PostGIS 3.0.0alpha2
+2019/XX/XX
+
+For full changes and enhancements, refer to PostGIS 3.0.0 section.
+This version requires PostgreSQL 9.5+-12 and GEOS >= 3.6+
+Additional features enabled if you are running Proj6+ and PostgreSQL 12
+
+* Major highlights *
+  - #4404, Fix selectivity issue with support functions (Paul Ramsey)
+  - #4311, Make wagyu the default option to validate polygons.
+          This option requires a C++11 compiler and will use CXXFLAGS (not CFLAGS).
+          Add `--without-wagyu` to disable this option and keep the behaviour
+          from 2.5 (Raúl Marín)
+
+
 PostGIS 3.0.0alpha1
 2019/05/26
 For full changes and enhancements, refer to PostGIS 3.0.0 section.
@@ -59,7 +74,9 @@ PostGIS 3.0.0
            within, equals (Esteban Zimányi and Arthur Lesuisse from Université
            Libre de Bruxelles (ULB), Darafei Praliaskouski)
   - #4171, ST_3DLineInterpolatePoint (Julien Cabieces, Vincent Mora)
-  - #4311, Introduce `--with-wagyu` as an option for MVT polygons (Raúl Marín)
+  - #4311, Introduce WAGYU to validate MVT polygons. This option requires a C++11
+           compiler and will use CXXFLAGS (not CFLAGS). Add `--without-wagyu`
+           to disable this option and keep the behaviour from 2.5 (Raúl Marín)
   - #1833, ST_AsGeoJSON(row) generates full GeoJSON Features (Joe Conway)
   - #3687, Casts json(geometry) and jsonb(geometry) for implicit GeoJSON
            generation (Paul Ramsey)

configure.ac

@@ -1472,9 +1472,9 @@ HAVE_WAGYU=no
 if test "x$HAVE_PROTOBUF" = "xyes"; then
     AC_ARG_WITH(
             [wagyu],
-            AC_HELP_STRING([--with-wagyu], [Use the wagyu library]),
-            [HAVE_WAGYU=yes],
-            [HAVE_WAGYU=no])
+            AC_HELP_STRING([--without-wagyu], [Don't use the wagyu library]),
+            [HAVE_WAGYU=no],
+            [HAVE_WAGYU=yes])
 
     if test "x$HAVE_WAGYU" = "xyes"; then
             AC_MSG_RESULT([WAGYU: Wagyu usage requested])

doc/installation.xml

@@ -241,7 +241,7 @@ psql -d yourdatabase -f sfcgal_comments.sql
 			  To enable ST_AsMVT protobuf-c library (for usage) and the protoc-c compiler (for building) are required.
 				Also, pkg-config is required to verify the correct minimum version of protobuf-c.
 				See <ulink url="https://github.com/protobuf-c/protobuf-c">protobuf-c</ulink>.
-                To use Wagyu to validate MVT polygons faster, a c++11 compiler is required. It requires <varname>--with-wagyu</varname> to be passed during configure; and it will use CXXFLAGS and the same compiler as the PostgreSQL installation.
+				By default, Postgis will use Wagyu to validate MVT polygons faster which requires a c++11 compiler. It will use CXXFLAGS and the same compiler as the PostgreSQL installation. To disable this and use GEOS instead use the <varname>--without-wagyu</varname> during the configure step.
 			</para>
 		</listitem>
 
@@ -599,10 +599,10 @@ tar -xvzf postgis-&last_release_version;.tar.gz</programlisting>
 		  </listitem>
 		</varlistentry>
 		<varlistentry>
-		  <term><command>--with-wagyu</command></term>
+		  <term><command>--without-wagyu</command></term>
 		  <listitem>
 			<para>
-			  When building with MVT support, by default Postgis will use GEOS to clip and validate MVT polygons. You can use <ulink url="https://github.com/mapbox/wagyu/">Wagyu</ulink> instead which is faster and guaranteed to produce correct values for this specific case.
+			  When building with MVT support, Postgis will use <ulink url="https://github.com/mapbox/wagyu/">Wagyu</ulink> to clip and validate MVT polygons. Wagyu is the fastest alternative and guarantees producing correct values for this specific case, but it requires a C++-11 compiler. With this optional argument you can disable using this library; GEOS will be used instead.
 			</para>
 		  </listitem>
 		</varlistentry>