diff -Nurd -x'*~' sextractor-2.19.5.orig/Makefile.am sextractor-2.19.5/Makefile.am
--- sextractor-2.19.5.orig/Makefile.am	2012-07-09 10:08:59.000000000 -0400
+++ sextractor-2.19.5/Makefile.am	2015-11-24 02:08:48.000000000 -0500
@@ -26,6 +26,7 @@
 #
 #%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
 
+ACLOCAL_AMFLAGS = -I autoconf
 AUTOMAKE_OPTIONS	= foreign no-dependencies
 SUBDIRS			= man src tests
 dist_pkgdata_DATA	= config/* xsl/sextractor.xsl
diff -Nurd -x'*~' sextractor-2.19.5.orig/acx_accelerate.m4 sextractor-2.19.5/acx_accelerate.m4
--- sextractor-2.19.5.orig/acx_accelerate.m4	1969-12-31 19:00:00.000000000 -0500
+++ sextractor-2.19.5/acx_accelerate.m4	2015-11-24 02:04:52.000000000 -0500
@@ -0,0 +1,82 @@
+dnl
+dnl				acx_accelerate.m4
+dnl
+dnl Set up options for using the Mac OSX Accelerate Framework.
+dnl
+dnl %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+dnl
+dnl	This file part of:	AstrOmatic software
+dnl
+dnl	Copyright:		(C) 2003-2013 Emmanuel Bertin -- IAP/CNRS/UPMC
+dnl
+dnl	License:		GNU General Public License
+dnl
+dnl	AstrOmatic software is free software: you can redistribute it and/or
+dnl	modify it under the terms of the GNU General Public License as
+dnl	published by the Free Software Foundation, either version 3 of the
+dnl	License, or (at your option) any later version.
+dnl	AstrOmatic software is distributed in the hope that it will be useful,
+dnl	but WITHOUT ANY WARRANTY; without even the implied warranty of
+dnl	MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+dnl	GNU General Public License for more details.
+dnl	You should have received a copy of the GNU General Public License
+dnl	along with AstrOmatic software.
+dnl	If not, see <http://www.gnu.org/licenses/>.
+dnl
+dnl	Last modified:		02/11/2014
+dnl
+dnl %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+dnl
+dnl @synopsis ACX_ACCEL([MKL_DIR, ILP64_FLAG, STATIC_FLAG, CONV_LIBS])
+dnl
+dnl This macro sets the MKL_CFLAGS, MKL_LDFLAGS and MKL_LIBS variables to
+dnl for compiling and linking with INTEL's MKL. A coma-separated list of
+dnl convenience libraries may be included in the linked group for static linking.
+dnl You may wish to use these variables in your default CFLAGS:
+dnl
+dnl        CFLAGS="$CFLAGS $MKL_CFLAGS"
+dnl
+dnl You may wish to use these variables in your default LDFLAGS:
+dnl
+dnl        LDFLAGS="$LDFLAGS $MKL_LDLAGS"
+dnl
+dnl You may wish to use these variables in your default LIBS:
+dnl
+dnl        LIBS="$LIBS $MKL_LIBS"
+dnl
+
+AC_DEFUN([ACX_ACCEL], [
+AC_REQUIRE([AC_CANONICAL_HOST])
+
+
+dnl --------------------------
+dnl Exit if host is not MacOSX
+dnl --------------------------
+case $host_os in
+  darwin* ) ;;
+  *)
+    ACCEL_WARN="Accelerate only available on Mac OSX"
+    AC_SUBST(ACCEL_WARN)
+    exit
+esac
+
+acx_accelerate_ok=no
+AC_CHECK_HEADERS([Accelerate/Accelerate.h], [acx_accelerate_ok=yes])
+AC_SUBST(ACCEL_LIBS, "-framework Accelerate")
+AC_SUBST(MKL_LDFLAGS, "")
+
+dnl --------------------
+dnl Set internal flags
+dnl --------------------
+
+AC_DEFINE(HAVE_ACCELERATE,1, [Define if you have the Accelerate libraries.])
+AC_DEFINE(HAVE_LAPACK,1, [Define if you have the LAPACK libraries.])
+
+dnl --------------------
+dnl Set include files
+dnl --------------------
+
+AC_DEFINE(ACCELERATE_H, "Accelerate/Accelerate.h", [Accelerate header filename.])
+AC_DEFINE(LAPACK_H, "Accelerate/Accelerate.h", [LAPACK header filename.])
+
+])dnl ACX_ACCEL
diff -Nurd -x'*~' sextractor-2.19.5.orig/configure.ac sextractor-2.19.5/configure.ac
--- sextractor-2.19.5.orig/configure.ac	2013-12-14 12:12:32.000000000 -0500
+++ sextractor-2.19.5/configure.ac	2015-11-24 02:08:28.000000000 -0500
@@ -34,6 +34,7 @@
 AC_INIT(sextractor, 2.19.5, [bertin@iap.fr])
 AC_CONFIG_SRCDIR(src/makeit.c)
 AC_CONFIG_AUX_DIR(autoconf)
+AC_CONFIG_MACRO_DIRS([autoconf])
 AC_CONFIG_HEADERS(config.h)
 AM_INIT_AUTOMAKE
 date=`date +%Y-%m-%d`
@@ -48,6 +49,7 @@
 sinclude(acx_atlas.m4)
 sinclude(acx_fftw.m4)
 sinclude(acx_mkl.m4)
+sinclude(acx_accelerate.m4)
 sinclude(acx_prog_cc_optim.m4)
 sinclude(acx_pthread.m4)
 sinclude(acx_urbi_resolve_dir.m4)
@@ -85,6 +87,15 @@
 	AC_MSG_RESULT([yes]),
 	AC_MSG_RESULT([no]))
 
+# Provide special options for Apple Accelerate
+AC_MSG_CHECKING([whether we should use Appel's Accelerate])
+AC_ARG_ENABLE(accelerate,
+  [AS_HELP_STRING([--enable-accelerate],
+  [Use Apple's Accelerate for linear algebra (off by default)])],
+        CC="cc"
+  AC_MSG_RESULT([yes]),
+  AC_MSG_RESULT([no]))
+
 # Checks for programs.
 AC_LANG(C)
 
@@ -243,13 +254,19 @@
 	  AC_MSG_WARN([$FFTW_WARN])
 	fi,
 	AC_MSG_ERROR([$FFTW_ERROR Exiting.]))
+################ handle the Apple Accelerate framework (linear algebra) ######
+    if test x$enable_accelerate = xyes; then
+      ACX_ACCEL()
+      LIBS="$ACCEL_LIBS $LIBS"
+    else
 ################## handle the ATLAS library(linear algebra) ##################
-    ACX_ATLAS($with_atlas_libdir,$with_atlas_incdir,$use_pthreads,
-	LIBS="$ATLAS_LIBS $LIBS"
-	if test x$ATLAS_WARN != x; then
-	  AC_MSG_WARN([$ATLAS_WARN])
-	fi,
-	AC_MSG_ERROR([$ATLAS_ERROR Exiting.]))
+      ACX_ATLAS($with_atlas_libdir,$with_atlas_incdir,$use_pthreads,
+  	LIBS="$ATLAS_LIBS $LIBS"
+  	if test x$ATLAS_WARN != x; then
+  	  AC_MSG_WARN([$ATLAS_WARN])
+  	fi,
+  	AC_MSG_ERROR([$ATLAS_ERROR Exiting.]))
+    fi
   fi
 fi
 AM_CONDITIONAL(USE_MODEL, [test x$enable_model_fitting != xno])
diff -Nurd -x'*~' sextractor-2.19.5.orig/src/pattern.c sextractor-2.19.5/src/pattern.c
--- sextractor-2.19.5.orig/src/pattern.c	2012-07-09 11:01:16.000000000 -0400
+++ sextractor-2.19.5/src/pattern.c	2015-11-24 02:04:52.000000000 -0500
@@ -54,6 +54,10 @@
 #include ATLAS_LAPACK_H
 #endif
 
+#ifdef HAVE_ACCELERATE
+#include ACCELERATE_H
+#endif
+
 #ifdef HAVE_LAPACKE
 #include LAPACKE_H
 #endif
@@ -125,7 +129,7 @@
     }
 
   return pattern;
-  }  
+  }
 
 
 /****** pattern_end ***********************************************************
@@ -219,6 +223,10 @@
 /* Solve the system */
 #if defined(HAVE_LAPACKE)
   LAPACKE_dposv(LAPACK_COL_MAJOR, 'L', nvec, 1, alpha, nvec, beta, nvec);
+#elif defined(HAVE_ACCELERATE)
+  int info,n_beta=1;
+  char* upper_or_lower="U";
+  dposv_(upper_or_lower, &nvec, &n_beta, alpha, &nvec, beta, &nvec, &info);
 #else
   clapack_dposv(CblasRowMajor, CblasUpper, nvec, 1, alpha, nvec, beta, nvec);
 #endif