configure.ac: Build dricommon for DRI gallium drivers

Commit 67ef7559 added an || test "x$enable_dri" check in an attempt to
get the DRI common bits built in some necessary cases. That change was
inappropriate as it made these common DRI pieces be built
unconditionally, so some builds were broken.

Subsequently, commit 998d975e3 change the "|| test" to a "-a"
conjunction within the existing test invocation. This made the '-a
"x$enable_dri" = xyes' clause have no effect, (as it was inside an
enclosing test for the same condition). So the new breakage from
commit 67ef7559 was addressed, but the original problems were
regressed.

The immediately preceding commit removed the redundant condition.

Now, finally this commit fixes the original problem as described in
the commit message of 67ef7559: this code should be compiled when
using the DRI state tracker. In order to do so, the HAVE_*_DRI
conditionals must be moved after the last assignment of HAVE_COMMON_DRI.

Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=61821
Tested-by: Stéphane Marchesin <marcheu@chromium.org>
diff --git a/configure.ac b/configure.ac
index 925dc6b..3204869 100644
--- a/configure.ac
+++ b/configure.ac
@@ -1078,7 +1078,7 @@
         [AC_MSG_ERROR([Expat required for DRI.])])
     LIBS="$save_LIBS"
 
-    # if we are building any dri driver other than swrast or using the dri state tracker ...
+    # If we are building any DRI driver other than swrast.
     if test -n "$DRI_DIRS" -a x"$DRI_DIRS" != xswrast; then
         # ... libdrm is required
         if test "x$have_libdrm" != xyes; then
@@ -1147,14 +1147,6 @@
     ;;
 esac
 
-AM_CONDITIONAL(HAVE_I915_DRI, test x$HAVE_I915_DRI = xyes)
-AM_CONDITIONAL(HAVE_I965_DRI, test x$HAVE_I965_DRI = xyes)
-AM_CONDITIONAL(HAVE_NOUVEAU_DRI, test x$HAVE_NOUVEAU_DRI = xyes)
-AM_CONDITIONAL(HAVE_R200_DRI, test x$HAVE_R200_DRI = xyes)
-AM_CONDITIONAL(HAVE_RADEON_DRI, test x$HAVE_RADEON_DRI = xyes)
-AM_CONDITIONAL(HAVE_SWRAST_DRI, test x$HAVE_SWRAST_DRI = xyes)
-AM_CONDITIONAL(HAVE_COMMON_DRI, test x$HAVE_COMMON_DRI = xyes)
-
 dnl
 dnl OSMesa configuration
 dnl
@@ -1753,6 +1745,7 @@
     fi
     if test "x$HAVE_ST_DRI" = xyes && test "x$2" != x; then
          GALLIUM_TARGET_DIRS="$GALLIUM_TARGET_DIRS $2"
+         HAVE_COMMON_DRI=yes
     fi
     if test "x$HAVE_ST_XORG" = xyes && test "x$3" != x; then
          GALLIUM_TARGET_DIRS="$GALLIUM_TARGET_DIRS $3"
@@ -1994,6 +1987,14 @@
     esac
 done
 
+AM_CONDITIONAL(HAVE_I915_DRI, test x$HAVE_I915_DRI = xyes)
+AM_CONDITIONAL(HAVE_I965_DRI, test x$HAVE_I965_DRI = xyes)
+AM_CONDITIONAL(HAVE_NOUVEAU_DRI, test x$HAVE_NOUVEAU_DRI = xyes)
+AM_CONDITIONAL(HAVE_R200_DRI, test x$HAVE_R200_DRI = xyes)
+AM_CONDITIONAL(HAVE_RADEON_DRI, test x$HAVE_RADEON_DRI = xyes)
+AM_CONDITIONAL(HAVE_SWRAST_DRI, test x$HAVE_SWRAST_DRI = xyes)
+AM_CONDITIONAL(HAVE_COMMON_DRI, test x$HAVE_COMMON_DRI = xyes)
+
 AM_CONDITIONAL(HAVE_GALAHAD_GALLIUM, test x$HAVE_GALAHAD_GALLIUM = xyes)
 AM_CONDITIONAL(HAVE_IDENTITY_GALLIUM, test x$HAVE_IDENTITY_GALLIUM = xyes)
 AM_CONDITIONAL(HAVE_NOOP_GALLIUM, test x$HAVE_NOOP_GALLIUM = xyes)