diff --git a/README b/README
index 8118e5b3..f73956e7 100644
--- a/README
+++ b/README
@@ -20,7 +20,10 @@ After untarring the distribution and then doing "cd gptl", construct a
 macros.make file by editing one of the templates provided (currenty there's
 macros.make.linux, and macros.make.sicortex) that is closest to the machine
 you're building the library on. Step-by-step instructions for setting each
-configuration option are embedded in that file. Then:
+configuration option are embedded in that file. If unsure of some settings,
+you can run "./suggestions". This is an autoconf "configure" script which has
+been modified to just print suggestions, rather than creating any output
+files. After creating macros.make:
 
 % make all
 % make install
diff --git a/aclocal.m4 b/aclocal.m4
deleted file mode 100644
index f1bbd338..00000000
--- a/aclocal.m4
+++ /dev/null
@@ -1,141 +0,0 @@
-dnl Sets OMPCFLAGS, OMPDEFS.  Sets OMP to YES or NO
-AC_DEFUN(UD_SET_OMP_C,
-[
-  OMPCFLAGS=""
-  OMPDEFS=""
-  OLDFLAGS="$CFLAGS"
-  OMP="NO"
-
-  AC_MSG_CHECKING([C flags for openmp])
-
-  if test "$OMP" = "NO" ; then
-    OMPCFLAGS="-qsmp=omp"
-    CFLAGS="$OLDFLAGS $OMPCFLAGS"
-    AC_TRY_LINK([#include <omp.h>],[(void) omp_get_max_threads();],OMP="YES",)
-  fi
-
-  if test "$OMP" = "NO" ; then
-    OMPCFLAGS="-mp"
-    CFLAGS="$OLDFLAGS $OMPCFLAGS"
-    AC_TRY_LINK([#include <omp.h>],[(void) omp_get_max_threads();],OMP="YES",)
-  fi
-
-  if test "$OMP" = "NO" ; then
-    OMPCFLAGS="-openmp"
-    CFLAGS="$OLDFLAGS $OMPCFLAGS"
-    AC_TRY_LINK([#include <omp.h>],[(void) omp_get_max_threads();],OMP="YES",)
-  fi
-
-  if test "$OMP" = "NO" ; then
-    OMPCFLAGS="-fopenmp"
-    CFLAGS="$OLDFLAGS $OMPCFLAGS"
-    AC_TRY_LINK([#include <omp.h>],[(void) omp_get_max_threads();],OMP="YES",)
-  fi
-
-  if test "$OMP" = "YES" ; then
-    OMPDEFS=-DTHREADED_OMP
-    AC_MSG_RESULT([$OMPCFLAGS])
-  else
-    AC_MSG_RESULT([not found])
-    AC_MSG_WARN([Threaded tests may behave incorrectly])
-    OMPCFLAGS=""
-  fi
-  CFLAGS="$OLDFLAGS"
-])
-
-dnl Sets OMPFFLAGS.  Sets FORTOMP to YES or NO
-AC_DEFUN(UD_SET_OMP_F77,
-[
-  AC_LANG_PUSH(Fortran 77)
-  OMPFFLAGS=""
-  OLDFLAGS="$FFLAGS"
-  FORTOMP="NO"
-
-  AC_MSG_CHECKING([Fortran flags for openmp])
-
-  OMPFFLAGS="-mp"
-  FFLAGS="$OLDFLAGS $OMPFFLAGS"
-  AC_TRY_LINK(,[      call omp_get_max_threads()],FORTOMP="YES",)
-
-  if test "$FORTOMP" = "NO" ; then
-    OMPFFLAGS="-qsmp=omp"
-    FFLAGS="$OLDFLAGS $OMPFFLAGS"
-    AC_TRY_LINK(,[      call omp_get_max_threads()],FORTOMP="YES",)
-  fi
-
-  if test "$FORTOMP" = "NO" ; then
-    OMPFFLAGS="-omp"
-    FFLAGS="$OLDFLAGS $OMPFFLAGS"
-    AC_TRY_LINK(,[      call omp_get_max_threads()],FORTOMP="YES",)
-  fi
-
-  if test "$FORTOMP" = "NO" ; then
-    OMPFFLAGS="-openmp"
-    FFLAGS="$OLDFLAGS $OMPFFLAGS"
-    AC_TRY_LINK(,[      call omp_get_max_threads()],FORTOMP="YES",)
-  fi
-
-  if test "$FORTOMP" = "NO" ; then
-    OMPFFLAGS="-fopenmp"
-    FFLAGS="$OLDFLAGS $OMPFFLAGS"
-    AC_TRY_LINK(,[      call omp_get_max_threads()],FORTOMP="YES",)
-  fi
-
-  if test "$FORTOMP" = "YES" ; then
-    AC_MSG_RESULT([$OMPFFLAGS])
-  else
-    AC_MSG_RESULT([not found])
-    AC_MSG_WARN([Threaded tests may behave incorrectly])
-    OMPFFLAGS=""
-  fi
-  FFLAGS="$OLDFLAGS"
-  AC_LANG_POP(Fortran 77)
-])
-
-dnl Sets PTHREADCFLAGS, PTHREADDEFS.  Sets PTHREADS to YES or NO
-AC_DEFUN(UD_SET_PTHREADS_C,
-[
-  OLDLDFLAGS="$LDFLAGS"
-  PTHREADDEFS=""
-  PTHREADCFLAGS="-lpthread"
-  LDFLAGS="$OLDLDFLAGS $PTHREADCFLAGS"
-  PTHREADS="NO"
-
-  AC_MSG_CHECKING([C flags for pthreads])
-  AC_TRY_LINK([#include <pthread.h>],[(void) pthread_self();],PTHREADS="YES",)
-
-  if test "$PTHREADS" = "YES" ; then
-    PTHREADDEFS=-DTHREADED_PTHREADS
-    AC_MSG_RESULT([$PTHREADCFLAGS])
-  else
-    AC_MSG_RESULT([not found])
-    AC_MSG_WARN([Threaded tests may behave incorrectly])
-    PTHREADCFLAGS=""
-  fi
-  LDFLAGS="$OLDLDFLAGS"
-])
-
-dnl Modify FLDFLAGS only, not LDFLAGS in the end
-
-AC_DEFUN(UD_SET_PTHREADS_F77,
-[
-  AC_LANG_PUSH(Fortran 77)
-  OLDLDFLAGS="$LDFLAGS"
-  PTHREADFFLAGS="-lpthread"
-  LDFLAGS="$OLDLDFLAGS $PTHREADFFLAGS"
-  PTHREADS="NO"
-
-  AC_MSG_CHECKING([Fortran flags for pthreads])
-  AC_TRY_LINK(,[pthread_self()],PTHREADS="YES";,)
-
-  if test "$PTHREADS" = "YES" ; then
-    THREADDEFS=-DTHREADED_PTHREADS
-    AC_MSG_RESULT([$PTHREADFFLAGS])
-  else
-    AC_MSG_RESULT([not found])
-    AC_MSG_WARN([Threaded Fortran tests may behave incorrectly])
-    PTHREADFFLAGS=""
-  fi
-  AC_LANG_POP(Fortran 77)
-  LDFLAGS="$OLDLDFLAGS"
-])
diff --git a/configure.ac b/configure.ac
index 473f8285..871f069a 100644
--- a/configure.ac
+++ b/configure.ac
@@ -1,19 +1,23 @@
 dnl Process this file with autoconf to produce a configure script.
 AC_INIT(private.h)
 AC_LANG(C)
-
+echo "This script provides suggestions for settings to apply in macros.make"
+echo "You can pass things like FC=gfortran or CC=pathcc to it to override defaults."
 AC_PROG_MAKE_SET
 AC_PROG_CC()
-#AC_PROG_FC()
+echo "Assuming C compiler is $CC"
+AC_PROG_FC()
+echo "Assuming Fortran compiler is $FC"
 dnl This barfs when CC is pgcc and F77 pgf90
 AC_FC_FUNC(z_zz,z_zz)
 case $z_zz in
-    z_zz__)     echo FORTRANDOUBLEUNDERSCORE ;;
-    z_zz_)      echo FORTRANUNDERSCORE ;;
-    Z_ZZ)       echo FORTRANCAPS ;;
+    z_zz__)     echo "Fortran name mangling: -DFORTRANDOUBLEUNDERSCORE" ;;
+    z_zz_)      echo "Fortran name mangling: -DFORTRANUNDERSCORE" ;;
+    Z_ZZ)       echo "Fortran name mangling: -DFORTRANCAPS" ;;
+    *)          echo "Fortran name mangling: none" ;;
 esac
 
 dnl For proper handling of const and inline
 AC_C_INLINE
-dnl Checks for library functions.
-AC_FUNC_VPRINTF
+echo "Inlining: -Dinline=$ac_cv_c_inline"
+dnl AC_FUNC_VPRINTF
diff --git a/macros.make.linux b/macros.make.linux
index 4d83aa23..217f0a5a 100644
--- a/macros.make.linux
+++ b/macros.make.linux
@@ -26,7 +26,7 @@ endif
 
 # For gcc, -Dinline=inline is a no-op. For other C compilers, things like 
 # -Dinline=__inline__ may be required. Autoconf test AC_C_INLINE can find the 
-# right definition.
+# right definition. If unsure, try running "./suggestions CC=<your_C_compiler>"
 INLINEFLAG  = -Dinline=inline
 
 # To build the Fortran interface, set FORTRAN=yes and define the entries under
diff --git a/macros.make.sicortex b/macros.make.sicortex
index 3c731cc7..68fdbae9 100644
--- a/macros.make.sicortex
+++ b/macros.make.sicortex
@@ -1,5 +1,5 @@
 # Where to install GPTL library, include files, and man pages
-INSTALLDIR = /home/jrosinski/mips
+INSTALLDIR = $(HOME)/mips
 
 # C compiler and flags: symbols, high optimization, inlining
 CC     = pathcc
@@ -24,16 +24,19 @@ else
   LDFLAGS += -lpthread
 endif
 
-# For gcc, -Dinline=inline is a no-op. For other C compilers, things like -Dinline=__inline__
-# may be required. Autoconf test AC_C_INLINE can find the right definition.
+# For gcc, -Dinline=inline is a no-op. For other C compilers, things like 
+# -Dinline=__inline__ may be required. Autoconf test AC_C_INLINE can find the 
+# right definition. If unsure, try running "./suggestions CC=<your_C_compiler>"
 INLINEFLAG  = -Dinline=inline
 
 # To build the Fortran interface, set FORTRAN=yes and define the entries under
 # ifeq ($(FORTRAN),yes). Otherwise, set FORTRAN=no and skip this section.
 FORTRAN = yes
 ifeq ($(FORTRAN),yes)
-# Fortran name mangling: possibilities are: leave UNDERSCORING blank (none),
-# -DFORTRANDOUBLEUNDERSCORE (e.g. g77), and -DFORTRANUNDERSCORE (e.g. gfortran)
+# Fortran name mangling: possibilities are: leave UNDERSCORING blank meaning none
+# (e.g. xlf90), -DFORTRANDOUBLEUNDERSCORE (e.g. g77), and -DFORTRANUNDERSCORE 
+# (e.g. gfortran, pathf95)
+#
 #  UNDERSCORING =
   UNDERSCORING = -DFORTRANUNDERSCORE
   UNDERSCORING = -DFORTRANDOUBLEUNDERSCORE
diff --git a/configure b/suggestions
similarity index 94%
rename from configure
rename to suggestions
index c4a9ef33..53bd7d4c 100755
--- a/configure
+++ b/suggestions
@@ -288,7 +288,7 @@ prefix=NONE
 program_prefix=NONE
 program_suffix=NONE
 program_transform_name=s,x,x,
-silent=
+silent=yes
 site=
 srcdir=
 verbose=
@@ -1258,7 +1258,8 @@ ac_compile='$CC -c $CFLAGS $CPPFLAGS conftest.$ac_ext >&5'
 ac_link='$CC -o conftest$ac_exeext $CFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
 ac_compiler_gnu=$ac_cv_c_compiler_gnu
 
-
+echo "This script provides suggestions for settings to apply in macros.make"
+echo "You can pass things like FC=gfortran or CC=pathcc to it to override defaults."
 echo "$as_me:$LINENO: checking whether ${MAKE-make} sets \$(MAKE)" >&5
 echo $ECHO_N "checking whether ${MAKE-make} sets \$(MAKE)... $ECHO_C" >&6
 set dummy ${MAKE-make}; ac_make=`echo "$2" | sed 'y,:./+-,___p_,'`
@@ -2218,7 +2219,7 @@ ac_compile='$CC -c $CFLAGS $CPPFLAGS conftest.$ac_ext >&5'
 ac_link='$CC -o conftest$ac_exeext $CFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
 ac_compiler_gnu=$ac_cv_c_compiler_gnu
 
-#AC_PROG_FC()
+echo "Assuming C compiler is $CC"
 ac_ext=${FC_SRCEXT-f}
 ac_compile='$FC -c $FCFLAGS $FCFLAGS_SRCEXT conftest.$ac_ext >&5'
 ac_link='$FC -o conftest$ac_exeext $FCFLAGS $LDFLAGS $FCFLAGS_SRCEXT conftest.$ac_ext $LIBS >&5'
@@ -2311,7 +2312,7 @@ fi
 
 
 # Provide some information about the compiler.
-echo "$as_me:2314:" \
+echo "$as_me:2315:" \
      "checking for Fortran compiler version" >&5
 ac_compiler=`set X $ac_compile; echo $2`
 { (eval echo "$as_me:$LINENO: \"$ac_compiler --version </dev/null >&5\"") >&5
@@ -2454,6 +2455,7 @@ ac_compile='$CC -c $CFLAGS $CPPFLAGS conftest.$ac_ext >&5'
 ac_link='$CC -o conftest$ac_exeext $CFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
 ac_compiler_gnu=$ac_cv_c_compiler_gnu
 
+echo "Assuming Fortran compiler is $FC"
 
 ac_ext=${FC_SRCEXT-f}
 ac_compile='$FC -c $FCFLAGS $FCFLAGS_SRCEXT conftest.$ac_ext >&5'
@@ -2506,7 +2508,7 @@ _ACEOF
 # flags.
 ac_save_FFLAGS=$FCFLAGS
 FCFLAGS="$FCFLAGS $ac_verb"
-(eval echo $as_me:2509: \"$ac_link\") >&5
+(eval echo $as_me:2511: \"$ac_link\") >&5
 ac_fc_v_output=`eval $ac_link 5>&1 2>&1 | grep -v 'Driving:'`
 echo "$ac_fc_v_output" >&5
 FCFLAGS=$ac_save_FFLAGS
@@ -2584,7 +2586,7 @@ _ACEOF
 # flags.
 ac_save_FFLAGS=$FCFLAGS
 FCFLAGS="$FCFLAGS $ac_cv_prog_fc_v"
-(eval echo $as_me:2587: \"$ac_link\") >&5
+(eval echo $as_me:2589: \"$ac_link\") >&5
 ac_fc_v_output=`eval $ac_link 5>&1 2>&1 | grep -v 'Driving:'`
 echo "$ac_fc_v_output" >&5
 FCFLAGS=$ac_save_FFLAGS
@@ -3201,9 +3203,10 @@ ac_link='$CC -o conftest$ac_exeext $CFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $
 ac_compiler_gnu=$ac_cv_c_compiler_gnu
 
 case $z_zz in
-    z_zz__)     echo FORTRANDOUBLEUNDERSCORE ;;
-    z_zz_)      echo FORTRANUNDERSCORE ;;
-    Z_ZZ)       echo FORTRANCAPS ;;
+    z_zz__)     echo "Fortran name mangling: -DFORTRANDOUBLEUNDERSCORE" ;;
+    z_zz_)      echo "Fortran name mangling: -DFORTRANUNDERSCORE" ;;
+    Z_ZZ)       echo "Fortran name mangling: -DFORTRANCAPS" ;;
+    *)          echo "Fortran name mangling: none" ;;
 esac
 
 echo "$as_me:$LINENO: checking for inline" >&5
@@ -3260,7 +3263,7 @@ done
 fi
 echo "$as_me:$LINENO: result: $ac_cv_c_inline" >&5
 echo "${ECHO_T}$ac_cv_c_inline" >&6
-echo "${ECHO_T}$ac_cv_c_inline" >&6
+
 
 case $ac_cv_c_inline in
   inline | yes) ;;
@@ -3277,219 +3280,4 @@ _ACEOF
     ;;
 esac
 
-for ac_func in vprintf
-do
-as_ac_var=`echo "ac_cv_func_$ac_func" | $as_tr_sh`
-echo "$as_me:$LINENO: checking for $ac_func" >&5
-echo $ECHO_N "checking for $ac_func... $ECHO_C" >&6
-if eval "test \"\${$as_ac_var+set}\" = set"; then
-  echo $ECHO_N "(cached) $ECHO_C" >&6
-else
-  cat >conftest.$ac_ext <<_ACEOF
-/* confdefs.h.  */
-_ACEOF
-cat confdefs.h >>conftest.$ac_ext
-cat >>conftest.$ac_ext <<_ACEOF
-/* end confdefs.h.  */
-/* Define $ac_func to an innocuous variant, in case <limits.h> declares $ac_func.
-   For example, HP-UX 11i <limits.h> declares gettimeofday.  */
-#define $ac_func innocuous_$ac_func
-
-/* System header to define __stub macros and hopefully few prototypes,
-    which can conflict with char $ac_func (); below.
-    Prefer <limits.h> to <assert.h> if __STDC__ is defined, since
-    <limits.h> exists even on freestanding compilers.  */
-
-#ifdef __STDC__
-# include <limits.h>
-#else
-# include <assert.h>
-#endif
-
-#undef $ac_func
-
-/* Override any gcc2 internal prototype to avoid an error.  */
-#ifdef __cplusplus
-extern "C"
-{
-#endif
-/* We use char because int might match the return type of a gcc2
-   builtin and then its argument prototype would still apply.  */
-char $ac_func ();
-/* The GNU C library defines this for functions which it implements
-    to always fail with ENOSYS.  Some functions are actually named
-    something starting with __ and the normal name is an alias.  */
-#if defined (__stub_$ac_func) || defined (__stub___$ac_func)
-choke me
-#else
-char (*f) () = $ac_func;
-#endif
-#ifdef __cplusplus
-}
-#endif
-
-#ifdef FC_DUMMY_MAIN
-#ifndef FC_DUMMY_MAIN_EQ_F77
-#  ifdef __cplusplus
-     extern "C"
-#  endif
-   int FC_DUMMY_MAIN() { return 1; }
-#endif
-#endif
-int
-main ()
-{
-return f != $ac_func;
-  ;
-  return 0;
-}
-_ACEOF
-rm -f conftest.$ac_objext conftest$ac_exeext
-if { (eval echo "$as_me:$LINENO: \"$ac_link\"") >&5
-  (eval $ac_link) 2>conftest.er1
-  ac_status=$?
-  grep -v '^ *+' conftest.er1 >conftest.err
-  rm -f conftest.er1
-  cat conftest.err >&5
-  echo "$as_me:$LINENO: \$? = $ac_status" >&5
-  (exit $ac_status); } &&
-	 { ac_try='test -z "$ac_c_werror_flag"
-			 || test ! -s conftest.err'
-  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
-  (eval $ac_try) 2>&5
-  ac_status=$?
-  echo "$as_me:$LINENO: \$? = $ac_status" >&5
-  (exit $ac_status); }; } &&
-	 { ac_try='test -s conftest$ac_exeext'
-  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
-  (eval $ac_try) 2>&5
-  ac_status=$?
-  echo "$as_me:$LINENO: \$? = $ac_status" >&5
-  (exit $ac_status); }; }; then
-  eval "$as_ac_var=yes"
-else
-  echo "$as_me: failed program was:" >&5
-sed 's/^/| /' conftest.$ac_ext >&5
-
-eval "$as_ac_var=no"
-fi
-rm -f conftest.err conftest.$ac_objext \
-      conftest$ac_exeext conftest.$ac_ext
-fi
-echo "$as_me:$LINENO: result: `eval echo '${'$as_ac_var'}'`" >&5
-echo "${ECHO_T}`eval echo '${'$as_ac_var'}'`" >&6
-if test `eval echo '${'$as_ac_var'}'` = yes; then
-  cat >>confdefs.h <<_ACEOF
-#define `echo "HAVE_$ac_func" | $as_tr_cpp` 1
-_ACEOF
-
-echo "$as_me:$LINENO: checking for _doprnt" >&5
-echo $ECHO_N "checking for _doprnt... $ECHO_C" >&6
-if test "${ac_cv_func__doprnt+set}" = set; then
-  echo $ECHO_N "(cached) $ECHO_C" >&6
-else
-  cat >conftest.$ac_ext <<_ACEOF
-/* confdefs.h.  */
-_ACEOF
-cat confdefs.h >>conftest.$ac_ext
-cat >>conftest.$ac_ext <<_ACEOF
-/* end confdefs.h.  */
-/* Define _doprnt to an innocuous variant, in case <limits.h> declares _doprnt.
-   For example, HP-UX 11i <limits.h> declares gettimeofday.  */
-#define _doprnt innocuous__doprnt
-
-/* System header to define __stub macros and hopefully few prototypes,
-    which can conflict with char _doprnt (); below.
-    Prefer <limits.h> to <assert.h> if __STDC__ is defined, since
-    <limits.h> exists even on freestanding compilers.  */
-
-#ifdef __STDC__
-# include <limits.h>
-#else
-# include <assert.h>
-#endif
-
-#undef _doprnt
-
-/* Override any gcc2 internal prototype to avoid an error.  */
-#ifdef __cplusplus
-extern "C"
-{
-#endif
-/* We use char because int might match the return type of a gcc2
-   builtin and then its argument prototype would still apply.  */
-char _doprnt ();
-/* The GNU C library defines this for functions which it implements
-    to always fail with ENOSYS.  Some functions are actually named
-    something starting with __ and the normal name is an alias.  */
-#if defined (__stub__doprnt) || defined (__stub____doprnt)
-choke me
-#else
-char (*f) () = _doprnt;
-#endif
-#ifdef __cplusplus
-}
-#endif
-
-#ifdef FC_DUMMY_MAIN
-#ifndef FC_DUMMY_MAIN_EQ_F77
-#  ifdef __cplusplus
-     extern "C"
-#  endif
-   int FC_DUMMY_MAIN() { return 1; }
-#endif
-#endif
-int
-main ()
-{
-return f != _doprnt;
-  ;
-  return 0;
-}
-_ACEOF
-rm -f conftest.$ac_objext conftest$ac_exeext
-if { (eval echo "$as_me:$LINENO: \"$ac_link\"") >&5
-  (eval $ac_link) 2>conftest.er1
-  ac_status=$?
-  grep -v '^ *+' conftest.er1 >conftest.err
-  rm -f conftest.er1
-  cat conftest.err >&5
-  echo "$as_me:$LINENO: \$? = $ac_status" >&5
-  (exit $ac_status); } &&
-	 { ac_try='test -z "$ac_c_werror_flag"
-			 || test ! -s conftest.err'
-  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
-  (eval $ac_try) 2>&5
-  ac_status=$?
-  echo "$as_me:$LINENO: \$? = $ac_status" >&5
-  (exit $ac_status); }; } &&
-	 { ac_try='test -s conftest$ac_exeext'
-  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
-  (eval $ac_try) 2>&5
-  ac_status=$?
-  echo "$as_me:$LINENO: \$? = $ac_status" >&5
-  (exit $ac_status); }; }; then
-  ac_cv_func__doprnt=yes
-else
-  echo "$as_me: failed program was:" >&5
-sed 's/^/| /' conftest.$ac_ext >&5
-
-ac_cv_func__doprnt=no
-fi
-rm -f conftest.err conftest.$ac_objext \
-      conftest$ac_exeext conftest.$ac_ext
-fi
-echo "$as_me:$LINENO: result: $ac_cv_func__doprnt" >&5
-echo "${ECHO_T}$ac_cv_func__doprnt" >&6
-if test $ac_cv_func__doprnt = yes; then
-
-cat >>confdefs.h <<\_ACEOF
-#define HAVE_DOPRNT 1
-_ACEOF
-
-fi
-
-fi
-done
-
-
+echo "Inlining: -Dinline=$ac_cv_c_inline"