libsemanage: rework host installation

libsemanage has a pretty peculiar interpretation of DESTDIR and PREFIX.
PREFIX is not consistently used: some installation paths are forced to
$(DESTDIR)/usr/... . In other cases, PREFIX is indeed used. PREFIX
defaults to $(DESTDIR)/usr

Try to be a little bit more correct by passing both DESTDIR and PREFIX,
both set to $(HOST_DIR). This is not a complete fix: man pages are
still installed in $(HOST_DIR)/usr - but we don't care about that.

Signed-off-by: Arnout Vandecappelle (Essensium/Mind) <arnout@mind.be>
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>

package/libsemanage/libsemanage.mk

@@ -29,7 +29,12 @@ endef
 
 HOST_LIBSEMANAGE_DEPENDENCIES = host-bison host-audit host-libsepol host-libselinux \
 				host-ustr host-bzip2 host-swig
-HOST_LIBSEMANAGE_MAKE_OPTS += $(HOST_CONFIGURE_OPTS) \
+
+# DESTDIR is needed during the compile to compute library and header paths.
+HOST_LIBSEMANAGE_MAKE_OPTS += \
+	$(HOST_CONFIGURE_OPTS) \
+	DESTDIR=$(HOST_DIR) \
+	PREFIX=$(HOST_DIR) \
 	SWIG_LIB="$(HOST_DIR)/share/swig/$(SWIG_VERSION)/"
 
 ifeq ($(BR2_PACKAGE_PYTHON3),y)
@@ -47,15 +52,13 @@ HOST_LIBSEMANAGE_MAKE_OPTS += \
 endif
 
 define HOST_LIBSEMANAGE_BUILD_CMDS
-	# DESTDIR is needed during the compile to compute library and
-	# header paths.
-	$(HOST_MAKE_ENV) $(MAKE) -C $(@D) $(HOST_CONFIGURE_OPTS) DESTDIR=$(HOST_DIR) all
-	$(HOST_MAKE_ENV) $(MAKE) -C $(@D) $(HOST_LIBSEMANAGE_MAKE_OPTS) DESTDIR=$(HOST_DIR) swigify pywrap
+	$(HOST_MAKE_ENV) $(MAKE) -C $(@D) $(HOST_LIBSEMANAGE_MAKE_OPTS) all
+	$(HOST_MAKE_ENV) $(MAKE) -C $(@D) $(HOST_LIBSEMANAGE_MAKE_OPTS) swigify pywrap
 endef
 
 define HOST_LIBSEMANAGE_INSTALL_CMDS
-	$(HOST_MAKE_ENV) $(MAKE) -C $(@D) $(HOST_CONFIGURE_OPTS) DESTDIR=$(HOST_DIR) install
-	$(HOST_MAKE_ENV) $(MAKE) -C $(@D) $(HOST_LIBSEMANAGE_MAKE_OPTS) DESTDIR=$(HOST_DIR) install-pywrap
+	$(HOST_MAKE_ENV) $(MAKE) -C $(@D) $(HOST_LIBSEMANAGE_MAKE_OPTS) install
+	$(HOST_MAKE_ENV) $(MAKE) -C $(@D) $(HOST_LIBSEMANAGE_MAKE_OPTS) install-pywrap
 endef
 
 $(eval $(generic-package))