development/bmake: Fix for exported TAG variable.

Signed-off-by: David Spencer <idlemoor@slackbuilds.org>

development/bmake/bmake.SlackBuild

@@ -83,13 +83,6 @@ find -L . \
 # but might cause problems someday.
 patch -p1 < $CWD/compilefix.diff
 
-# The usual MAKEFLAGS=-j8 or such, will break the build. bmake interprets
-# MAKEFLAGS differently from GNU make. Plus, the main part of the build
-# (actually compiling bmake) isn't done by make, so MAKEFLAGS would have
-# no effect.
-unset MAKEFLAGS
-export MAKEFLAGS
-
 DOCS="ChangeLog README LICENSE"
 
 # The current build system does not respect a large portion of
@@ -107,7 +100,14 @@ CXXFLAGS="$SLKCFLAGS" \
   --with-default-sys-path=/usr/share/mk-$PRGNAM \
   --build=$ARCH-slackware-linux
 
-make install DESTDIR=$PKG MANTARGET=man MAKESYSPATH=/usr/share/mk-$PRGNAM
+# The usual MAKEFLAGS=-j8 or such, will break the build. bmake interprets
+# MAKEFLAGS differently from GNU make. Plus, the main part of the build
+# (actually compiling bmake) isn't done by make, so MAKEFLAGS would have
+# no effect.  Also, the build interprets TAG as selecting a test scenario.
+env \
+  -u MAKEFLAGS \
+  -u TAG \
+  make install DESTDIR=$PKG MANTARGET=man MAKESYSPATH=/usr/share/mk-$PRGNAM
 
 # Override the build system's installation locations.
 mv $PKG/usr/share/man $PKG/usr