LIBRARIES_ONLY should only be defined during install32.

r245561 added it to prevent extra files from being installed during
the install32 phase (to prevent duplicates in the meta log with -DNO_ROOT).
The flag should not be passed during build32 though since it may
prevent staging of includes during the 'make includes' phase on
library directories.

Sponsored by:	EMC / Isilon Storage Division

Makefile.libcompat

@@ -79,7 +79,6 @@ LIBCOMPATWMAKEENV+= MAKEOBJDIRPREFIX=${LIBCOMPAT_OBJTREE} \
 LIBCOMPATWMAKEFLAGS+= CC="${XCC} ${LIBCOMPATCFLAGS}" \
 		CXX="${XCXX} ${LIBCOMPATCFLAGS}" \
 		DESTDIR=${LIBCOMPATTMP} \
-		-DLIBRARIES_ONLY \
 		-DNO_CPU_CFLAGS \
 		MK_CTF=no \
 		-DNO_LINT \
@@ -87,7 +86,8 @@ LIBCOMPATWMAKEFLAGS+= CC="${XCC} ${LIBCOMPATCFLAGS}" \
 LIBCOMPATWMAKE+=	${LIBCOMPATWMAKEENV} ${MAKE} ${LIBCOMPATWMAKEFLAGS} \
 			MK_MAN=no MK_HTML=no
 LIBCOMPATIMAKE+=	${LIBCOMPATWMAKE:NINSTALL=*:NDESTDIR=*:N_LDSCRIPTROOT=*} \
-			MK_TOOLCHAIN=no ${IMAKE_INSTALL}
+			MK_TOOLCHAIN=no ${IMAKE_INSTALL} \
+			-DLIBRARIES_ONLY
 
 .if ${XCC:N${CCACHE_BIN}:M/*}
 LIBCOMPATCFLAGS+=	--sysroot=${WORLDTMP}