From: Karl Palsson <karlp@remake.is>
Date: Fri, 15 Apr 2016 15:12:18 +0000 (+0000)
Subject: projects/uci: lua: use built in pkg-config support for alternatives
X-Git-Url: http://git.archive.openwrt.org/?p=project%2Fuci.git;a=commitdiff_plain;h=e1bf4356e1b513e158e1b5049147087ed6342cfd;hp=ec96e1f93d6d0faa3f3c40f6bcbc0006550281a8

projects/uci: lua: use built in pkg-config support for alternatives

Different distributions have different names for the lua 5.1 package.
Use cmake's built in pkg-config support to search for the first one,
rather than running it explicitly and searching for a single version.

Signed-off-by: Karl Palsson <karlp@remake.is>
---

diff --git a/lua/CMakeLists.txt b/lua/CMakeLists.txt
index 4ba8e37..b9f513a 100644
--- a/lua/CMakeLists.txt
+++ b/lua/CMakeLists.txt
@@ -5,14 +5,8 @@ PROJECT(uci C)
 SET(CMAKE_INSTALL_PREFIX /)
 
 IF(NOT LUA_CFLAGS)
-	FIND_PROGRAM(PKG_CONFIG pkg-config)
-	IF(PKG_CONFIG)
-		EXECUTE_PROCESS(
-			COMMAND pkg-config --silence-errors --cflags lua5.1
-			OUTPUT_VARIABLE LUA_CFLAGS
-			OUTPUT_STRIP_TRAILING_WHITESPACE
-		)
-	ENDIF()
+	INCLUDE(FindPkgConfig)
+	pkg_search_module(LUA lua5.1 lua-5.1)
 ENDIF()
 
 ADD_DEFINITIONS(-Os -Wall -Werror --std=gnu99 -g3 -I.. ${LUA_CFLAGS})