configure: relax libpng version check to >= 1.2.50

Since this version is provided by Ubuntu trusty, we will get
Travis.CI builds with PNG support.
This commit is contained in:
Fabian Greffrath 2019-01-23 12:18:35 +01:00
parent 2f5571d72c
commit 6e3418c6a5

View file

@ -62,7 +62,7 @@ AS_HELP_STRING([--without-libpng],
[with_libpng=check] [with_libpng=check]
]) ])
AS_IF([test "x$with_libpng" != xno], [ AS_IF([test "x$with_libpng" != xno], [
PKG_CHECK_MODULES(PNG, libpng >= 1.6.10, [ PKG_CHECK_MODULES(PNG, libpng >= 1.2.50, [
AC_DEFINE([HAVE_LIBPNG], [1], [libpng installed]) AC_DEFINE([HAVE_LIBPNG], [1], [libpng installed])
], [ ], [
AS_IF([test "x$with_libpng" != xcheck], [AC_MSG_FAILURE( AS_IF([test "x$with_libpng" != xcheck], [AC_MSG_FAILURE(