RE: Using MKL fftw

[RUSS BRENNAN]

My mistake, I must have corrupted the configure scripts somehow.  Here's the diff of the configure files I am using to do this, and also note that I defined the required libs in LIBS='...' upon configuring.

--- configure   2010-09-03 14:22:18.000000000 -0700
+++ ../../OctaveDepsgcc4/octave-3.2.3/configure 2009-09-13 23:01:49.000000000 -0700
@@ -10243,7 +10243,7 @@
   echo $ECHO_N "(cached) $ECHO_C" >&6
 else
   ac_check_lib_save_LIBS=$LIBS
-LIBS="$LIBS"
+LIBS="-lfftw3  $LIBS"
 cat >conftest.$ac_ext <<_ACEOF
 /* confdefs.h.  */
 _ACEOF
@@ -10306,7 +10306,7 @@
   echo $ECHO_N "(cached) $ECHO_C" >&6
 else
   ac_check_lib_save_LIBS=$LIBS
-LIBS="$LIBS"
+LIBS="-lfftw3f  $LIBS"
 cat >conftest.$ac_ext <<_ACEOF
 /* confdefs.h.  */
 _ACEOF
@@ -10362,7 +10362,7 @@
 { echo "$as_me:$LINENO: result: $ac_cv_lib_fftw3f_fftwf_plan_dft_1d" >&5
 echo "${ECHO_T}$ac_cv_lib_fftw3f_fftwf_plan_dft_1d" >&6; }
 if test $ac_cv_lib_fftw3f_fftwf_plan_dft_1d = yes; then
-  FFTW_LIBS=$LIBS; with_fftw3=yes
+  FFTW_LIBS="-lfftw3 -lfftw3f"; with_fftw3=yes
 fi

 fi




--- configure.in        2010-09-03 14:21:06.000000000 -0700
+++ ../../OctaveDepsgcc4/octave-3.2.3/configure.in      2009-07-24 05:00:57.000000000 -0700
@@ -593,7 +593,7 @@
   AC_CHECK_HEADER(fftw3.h, [have_fftw3_header=yes])
   if test "$have_fftw3_header" = yes; then
     AC_CHECK_LIB(fftw3, fftw_plan_dft_1d, [
-      AC_CHECK_LIB(fftw3f, fftwf_plan_dft_1d, [FFTW_LIBS=$LIBS; with_fftw3=yes])])
+      AC_CHECK_LIB(fftw3f, fftwf_plan_dft_1d, [FFTW_LIBS="-lfftw3 -lfftw3f"; with_fftw3=yes])])
   fi
 fi

---

From: address@hidden
To: address@hidden
Subject: Using MKL fftw
Date: Fri, 3 Sep 2010 16:08:09 -0500

Does anyone have experience using MKL fftw3 with octave?  I was able to hack the configure script to allow it but now it seems I have opened another can of worms, because when I run make it tells me my version of autoconf is too old! TIA,

Russell

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