From 2608b0c6ee0533346fba58adac38bfbc3e5a3945 Mon Sep 17 00:00:00 2001
From: Rodolfo Ribeiro Gomes <rodolforg@gmail.com>
Date: Feb 12 2020 07:48:18 +0000
Subject: remove unused definitions of libpng versions


---

diff --git a/synfig-core/configure.ac b/synfig-core/configure.ac
index 403dbf1..f86c548 100644
--- a/synfig-core/configure.ac
+++ b/synfig-core/configure.ac
@@ -416,43 +416,30 @@ TARGET_MNG="yes"
 
 AC_CHECK_LIB(png16, png_write_row,[
 	PNG_LIBS="-lpng16"
-	AC_DEFINE(HAVE_LIBPNG16,[], [ Define if PNG 1.6 library is available ])
-	AC_DEFINE(HAVE_LIBPNG14,[], [ Define if PNG 1.4 library is available ])
 	AC_DEFINE(HAVE_LIBPNG,[], [ Define if PNG library is available ])
 	AC_SUBST(PNG_LIBS)
-	AM_CONDITIONAL(HAVE_LIBPNG16,true)
-	AM_CONDITIONAL(HAVE_LIBPNG14,true)
 	AM_CONDITIONAL(HAVE_LIBPNG,true)
 ],[
 	AC_CHECK_LIB(png14, png_write_row,[
 		PNG_LIBS="-lpng14"
-		AC_DEFINE(HAVE_LIBPNG14,[], [ Define if PNG 1.4 library is available ])
 		AC_DEFINE(HAVE_LIBPNG,[], [ Define if PNG library is available ])
 		AC_SUBST(PNG_LIBS)
-		AM_CONDITIONAL(HAVE_LIBPNG16,false)
-		AM_CONDITIONAL(HAVE_LIBPNG14,true)
 		AM_CONDITIONAL(HAVE_LIBPNG,true)
 	],[
 		AC_CHECK_LIB(png12, png_write_row,[
 		PNG_LIBS="-lpng12"
 		AC_DEFINE(HAVE_LIBPNG,[])
 		AC_SUBST(PNG_LIBS)
-		AM_CONDITIONAL(HAVE_LIBPNG16,false)
-		AM_CONDITIONAL(HAVE_LIBPNG14,false)
 		AM_CONDITIONAL(HAVE_LIBPNG,true)
 		],[
 			AC_CHECK_LIB(png, png_write_row,[
 			PNG_LIBS="-lpng"
 			AC_DEFINE(HAVE_LIBPNG,[])
 			AC_SUBST(PNG_LIBS)
-			AM_CONDITIONAL(HAVE_LIBPNG16,false)
-			AM_CONDITIONAL(HAVE_LIBPNG14,false)
 			AM_CONDITIONAL(HAVE_LIBPNG,true)
 			],[
 				AC_MSG_RESULT([ *** PNG Output target disabled])
 				TARGET_PNG="no"
-				AM_CONDITIONAL(HAVE_LIBPNG16,false)
-				AM_CONDITIONAL(HAVE_LIBPNG14,false)
 				AM_CONDITIONAL(HAVE_LIBPNG,false)
 			],[-lz -L${exec_prefix}/lib])
 		],[-lz -L${exec_prefix}/lib])