[openwrt/openwrt] lua: make it easier to detect host-built Lua

[LEDE Commits]

dangole pushed a commit to openwrt/openwrt.git, branch master:
https://git.openwrt.org/315f52e0f3bfa3d65ad14ca21a696c6d31c4edcd

commit 315f52e0f3bfa3d65ad14ca21a696c6d31c4edcd
Author: Daniel Golle <daniel at makrotopia.org>
AuthorDate: Sat Jul 10 20:21:26 2021 +0100

    lua: make it easier to detect host-built Lua
    
    Install pkg-config file also for host-build, clean up Lua symlinks.
    
    Signed-off-by: Daniel Golle <daniel at makrotopia.org>
---
 package/utils/lua/Makefile | 8 ++++++--
 1 file changed, 6 insertions(+), 2 deletions(-)

diff --git a/package/utils/lua/Makefile b/package/utils/lua/Makefile
index d262d1e1fc..e15142d8d2 100644
--- a/package/utils/lua/Makefile
+++ b/package/utils/lua/Makefile
@@ -134,8 +134,12 @@ define Host/Install
 		INSTALL_TOP="$(STAGING_DIR_HOSTPKG)" \
 		install
 
-	$(LN) $(STAGING_DIR_HOSTPKG)/bin/lua5.1 $(STAGING_DIR_HOSTPKG)/bin/lua
-	$(LN) $(STAGING_DIR_HOSTPKG)/bin/luac5.1 $(STAGING_DIR_HOSTPKG)/bin/luac
+	$(INSTALL_DIR) $(STAGING_DIR_HOSTPKG)/lib/pkgconfig
+	$(CP) $(HOST_BUILD_DIR)/etc/lua.pc $(STAGING_DIR_HOSTPKG)/lib/pkgconfig/lua5.1.pc
+
+	$(LN) lua5.1 $(STAGING_DIR_HOSTPKG)/bin/lua
+	$(LN) luac5.1 $(STAGING_DIR_HOSTPKG)/bin/luac
+	$(LN) lua5.1.pc $(STAGING_DIR_HOSTPKG)/lib/pkgconfig/lua.pc
 endef
 
 define Build/InstallDev