--- gigedit/trunk/configure.ac	2012/09/08 17:21:48	2366
+++ gigedit/trunk/configure.ac	2014/01/12 19:37:55	2507
@@ -61,11 +61,18 @@
 IT_PROG_INTLTOOL(0.35.0)
 AM_GLIB_GNU_GETTEXT
 
+windows=no
+mac=no
 case $host in
     *mingw*|*cygwin*) windows=yes ;;
-    *)                windows=no ;;
+    *-*-darwin*) mac=yes ;;
 esac
 AM_CONDITIONAL(WINDOWS, test "$windows" = "yes")
+AM_CONDITIONAL(MAC, test "$mac" = "yes")
+
+if test "$mac" = "yes"; then
+    AC_PROG_OBJC
+fi
 
 PKG_PROG_PKG_CONFIG
 have_gtk3=no
@@ -83,20 +90,10 @@
 AC_SUBST(GIG_LIBS)
 
 # check for presence of libsndfile
-PKG_CHECK_MODULES(SNDFILE, sndfile >= 1.0.2)
+PKG_CHECK_MODULES(SNDFILE, sndfile >= 1.0.11)
 AC_SUBST(SNDFILE_CFLAGS)
 AC_SUBST(SNDFILE_LIBS)
 
-# check for loop functionality in libsndfile
-gigedit_save_CXXFLAGS=$CXXFLAGS
-CXXFLAGS="$SNDFILE_CFLAGS $CXXFLAGS"
-AC_CHECK_MEMBERS([SF_INSTRUMENT.loops],,
-		 [AC_MSG_WARN([Your version of libsndfile does not support
-    reading of loop information. Gigedit will not be able to
-    extract loop information from sample files.])],
-		 [#include <sndfile.h>])
-CXXFLAGS=$gigedit_save_CXXFLAGS
-
 # check for (optional) presence of liblinuxsampler
 liblinuxsampler_version="0.5.0"
 PKG_CHECK_MODULES(