[92166] trunk/dports/graphics/povray/files/patch-configure
jeremyhu at macports.org
jeremyhu at macports.org
Fri Apr 20 14:53:04 PDT 2012
Revision: 92166
https://trac.macports.org/changeset/92166
Author: jeremyhu at macports.org
Date: 2012-04-20 14:53:04 -0700 (Fri, 20 Apr 2012)
Log Message:
-----------
povray: Don't use -march, -mcpu, or -mtune (#34144)
Modified Paths:
--------------
trunk/dports/graphics/povray/files/patch-configure
Modified: trunk/dports/graphics/povray/files/patch-configure
===================================================================
--- trunk/dports/graphics/povray/files/patch-configure 2012-04-20 20:58:04 UTC (rev 92165)
+++ trunk/dports/graphics/povray/files/patch-configure 2012-04-20 21:53:04 UTC (rev 92166)
@@ -1,6 +1,6 @@
---- configure.orig 2004-08-03 09:20:13.000000000 +1000
-+++ configure 2009-09-26 01:11:40.000000000 +1000
-@@ -10646,6 +10646,7 @@
+--- configure.orig 2004-08-02 16:20:13.000000000 -0700
++++ configure 2012-04-20 14:50:23.000000000 -0700
+@@ -10646,6 +10646,7 @@ cat confdefs.h >>conftest.$ac_ext
cat >>conftest.$ac_ext <<_ACEOF
/* end confdefs.h. */
#include <stdio.h>
@@ -8,7 +8,7 @@
#include <string.h>
#include "png.h"
int main (void)
-@@ -10653,7 +10654,7 @@
+@@ -10653,7 +10654,7 @@ int main (void)
const char *version = png_get_libpng_ver(NULL)
;
fprintf (stderr, "%s\n", version);
@@ -17,18 +17,992 @@
}
-@@ -14933,7 +14934,7 @@
- ;;
- k6-*) pov_arch="k6"; pov_arch_fallback="i686";;
- k7-*) pov_arch="k7"; pov_arch_fallback="i686";;
-- k8-*|x86_64-*) pov_arch="k8"; pov_arch_fallback="i686";;
-+ k8-*) pov_arch="k8"; pov_arch_fallback="i686";;
- *) pov_arch="unknown";;
+@@ -14889,990 +14890,8 @@ echo "${ECHO_T}$pov_prog_cc_flags_value"
esac
- fi
-@@ -15872,7 +15872,7 @@ echo "${ECHO_T}$pov_prog_cc_flags_value"
- fi
+ done
+- if test -z "$pov_arch"; then
+- case "$host" in
+- i486-*) pov_arch="i486";;
+- i586-*) pov_arch="pentium";; # for GCC / ICC
+- i686-*|i386-*) # FreeBSD seems to only report i386
+- pov_cpu=${pov_modelname:-`uname -p 2> /dev/null`}
+- case "$pov_cpu" in
+- # Intel
+- *pentium*4*|*xeon*) pov_arch="pentium4";; # for GCC / ICC
+- *pentium*mmx*) pov_arch="pentium";; # catch this first
+- *pentium*m*)
+- if test x"$CXX" = x"icc"; then
+- pov_arch="pentium4"
+- else
+- pov_arch="pentium-m"
+- fi
+- ;;
+- *pentium*iii*|*celeron*) # assume all celerons belong here
+- if test x"$CXX" = x"icc"; then
+- pov_arch="pentiumiii"
+- else
+- pov_arch="pentium3"
+- fi
+- ;;
+- *pentium*ii*)
+- if test x"$CXX" = x"icc"; then
+- pov_arch="pentiumii"
+- else
+- pov_arch="pentium2"
+- fi
+- ;;
+- *pentium*pro*) pov_arch="pentiumpro";; # for GCC / ICC
+- *pentium*) pov_arch="pentium";; # for GCC / ICC
+- # AMD
+- *athlon*xp*) pov_arch="athlon-xp";;
+- *athlon*mp*) pov_arch="athlon-mp";;
+- *athlon*|*duron*) pov_arch="athlon";;
+- # others
+- *) pov_arch="i686";; # don't support true i386
+- esac
+- pov_arch_fallback="i686"
+- ;;
+- k6-*) pov_arch="k6"; pov_arch_fallback="i686";;
+- k7-*) pov_arch="k7"; pov_arch_fallback="i686";;
+- k8-*|x86_64-*) pov_arch="k8"; pov_arch_fallback="i686";;
+- *) pov_arch="unknown";;
+- esac
+- fi
+- if test x"$pov_arch" != x"unknown"; then
+-
+-
+-
+- # Create a unique cache-id name (multiple flags are handled).
+- pov_prog_cxx_flags_var=pov_cv_prog_cxx_flags`echo -march=$pov_arch -mtune=$pov_arch | sed 's,[^a-zA-Z0-9],_,g'`
+-
+- # Create the extended regular expression to handle multiple flags.
+- # For instance, "-first-flag -second-flag -X" gives the regexp:
+- # "\-f|irst-flag|\-s|econd-flag|\-X|X"
+- #
+- # FreeBSD and Darwin seem to have a problem with the \+ sed construct
+- # (but apparently not with the \{x,y\} one). For safety, I prefer to
+- # use [[:space:]][[:space:]]* for [[:space:]]\+
+- pov_prog_cxx_flags_regexp=`echo -march=$pov_arch -mtune=$pov_arch | sed 's,\(-.\)\([^[:space:]]*\),\\\\\1|\2,g; s,[[:space:]][[:space:]]*,|,g; s,\(.\)||,\1|\1|,g; s,\(.\)|$,\1|\1,'`
+-
+- # Cannot use AC_CACHE_CHECK due to the nature of the cache-id variable.
+- echo "$as_me:$LINENO: checking whether $CXX accepts -march=$pov_arch -mtune=$pov_arch" >&5
+-echo $ECHO_N "checking whether $CXX accepts -march=$pov_arch -mtune=$pov_arch... $ECHO_C" >&6
+- if eval "test \"\${$pov_prog_cxx_flags_var+set}\" = set"; then
+- echo $ECHO_N "(cached) $ECHO_C" >&6
+-else
+-
+- # Create a conftest file for CXX.
+- ac_ext=cc
+-ac_cpp='$CXXCPP $CPPFLAGS'
+-ac_compile='$CXX -c $CXXFLAGS $CPPFLAGS conftest.$ac_ext >&5'
+-ac_link='$CXX -o conftest$ac_exeext $CXXFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
+-ac_compiler_gnu=$ac_cv_cxx_compiler_gnu
+-
+- cat >conftest.$ac_ext <<_ACEOF
+-#line $LINENO "configure"
+-/* confdefs.h. */
+-_ACEOF
+-cat confdefs.h >>conftest.$ac_ext
+-cat >>conftest.$ac_ext <<_ACEOF
+-/* end confdefs.h. */
+-
+-int
+-main ()
+-{
+-
+- ;
+- return 0;
+-}
+-_ACEOF
+-
+- # Compile with $CXX and inspect standard error for given flags.
+- { ac_try='$CXX -c conftest.$ac_ext > /dev/null 2> conftest.err0'
+- { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+- (eval $ac_try) 2>&5
+- ac_status=$?
+- echo "$as_me:$LINENO: \$? = $ac_status" >&5
+- (exit $ac_status); }; }
+- { ac_try='$CXX -c -march=$pov_arch -mtune=$pov_arch conftest.$ac_ext > /dev/null 2> conftest.err'
+- { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+- (eval $ac_try) 2>&5
+- ac_status=$?
+- echo "$as_me:$LINENO: \$? = $ac_status" >&5
+- (exit $ac_status); }; }
+- { ac_try='cat conftest.err >&5'
+- { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+- (eval $ac_try) 2>&5
+- ac_status=$?
+- echo "$as_me:$LINENO: \$? = $ac_status" >&5
+- (exit $ac_status); }; }
+- { ac_try='$ac_cv_prog_egrep \"$pov_prog_cxx_flags_regexp\" conftest.err 2>&1 > /dev/null'
+- { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+- (eval $ac_try) 2>&5
+- ac_status=$?
+- echo "$as_me:$LINENO: \$? = $ac_status" >&5
+- (exit $ac_status); }; }
+- # the command above seems to not always return the correct status, so
+- # for safety I rerun it here; I keep the other one for logging purpose.
+- pov_prog_cxx_flags_err=`$ac_cv_prog_egrep "$pov_prog_cxx_flags_regexp" conftest.err`
+- { ac_try='diff conftest.err0 conftest.err >&5'
+- { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+- (eval $ac_try) 2>&5
+- ac_status=$?
+- echo "$as_me:$LINENO: \$? = $ac_status" >&5
+- (exit $ac_status); }; }
+- if test -z "$pov_prog_cxx_flags_err" \
+- || test -z "`diff conftest.err0 conftest.err`"; then
+- eval "$pov_prog_cxx_flags_var=yes"
+- else
+- eval "$pov_prog_cxx_flags_var=no"
+- fi
+-
+- rm -f conftest.$ac_ext conftest.$ac_objext conftest.err conftest.err0
+- ac_ext=cc
+-ac_cpp='$CXXCPP $CPPFLAGS'
+-ac_compile='$CXX -c $CXXFLAGS $CPPFLAGS conftest.$ac_ext >&5'
+-ac_link='$CXX -o conftest$ac_exeext $CXXFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
+-ac_compiler_gnu=$ac_cv_cxx_compiler_gnu
+-
+-
+-
+-fi
+-
+- eval "pov_prog_cxx_flags_value=\$$pov_prog_cxx_flags_var"
+- echo "$as_me:$LINENO: result: $pov_prog_cxx_flags_value" >&5
+-echo "${ECHO_T}$pov_prog_cxx_flags_value" >&6
+-
+- # Update CXXFLAGS when flags are working, and run provided actions.
+- if test x"$pov_prog_cxx_flags_value" = x"yes"; then
+- CXXFLAGS="$CXXFLAGS -march=$pov_arch -mtune=$pov_arch"
+-
+- if test "$subdirs"; then
+- {
+-
+-
+-
+- pov_prog_cc_flags_var=pov_cv_prog_cc_flags`echo -march=$pov_arch -mtune=$pov_arch | sed 's,[^a-zA-Z0-9],_,g'`
+- pov_prog_cc_flags_regexp=`echo -march=$pov_arch -mtune=$pov_arch | sed 's,\(-.\)\([^[:space:]]*\),\\\\\1|\2,g; s,[[:space:]][[:space:]]*,|,g; s,\(.\)||,\1|\1|,g; s,\(.\)|$,\1|\1,'`
+-
+- echo "$as_me:$LINENO: checking whether $CC accepts -march=$pov_arch -mtune=$pov_arch" >&5
+-echo $ECHO_N "checking whether $CC accepts -march=$pov_arch -mtune=$pov_arch... $ECHO_C" >&6
+- if eval "test \"\${$pov_prog_cc_flags_var+set}\" = set"; then
+- echo $ECHO_N "(cached) $ECHO_C" >&6
+-else
+-
+- ac_ext=c
+-ac_cpp='$CPP $CPPFLAGS'
+-ac_compile='$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
+-
+- cat >conftest.$ac_ext <<_ACEOF
+-#line $LINENO "configure"
+-/* confdefs.h. */
+-_ACEOF
+-cat confdefs.h >>conftest.$ac_ext
+-cat >>conftest.$ac_ext <<_ACEOF
+-/* end confdefs.h. */
+-
+-int
+-main ()
+-{
+-
+- ;
+- return 0;
+-}
+-_ACEOF
+- { ac_try='$CC -c conftest.$ac_ext > /dev/null 2> conftest.err0'
+- { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+- (eval $ac_try) 2>&5
+- ac_status=$?
+- echo "$as_me:$LINENO: \$? = $ac_status" >&5
+- (exit $ac_status); }; }
+- { ac_try='$CC -c -march=$pov_arch -mtune=$pov_arch conftest.$ac_ext > /dev/null 2> conftest.err'
+- { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+- (eval $ac_try) 2>&5
+- ac_status=$?
+- echo "$as_me:$LINENO: \$? = $ac_status" >&5
+- (exit $ac_status); }; }
+- { ac_try='cat conftest.err >&5'
+- { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+- (eval $ac_try) 2>&5
+- ac_status=$?
+- echo "$as_me:$LINENO: \$? = $ac_status" >&5
+- (exit $ac_status); }; }
+- { ac_try='$ac_cv_prog_egrep \"$pov_prog_cc_flags_regexp\" conftest.err 2>&1 > /dev/null'
+- { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+- (eval $ac_try) 2>&5
+- ac_status=$?
+- echo "$as_me:$LINENO: \$? = $ac_status" >&5
+- (exit $ac_status); }; }
+- pov_prog_cc_flags_err=`$ac_cv_prog_egrep "$pov_prog_cc_flags_regexp" conftest.err`
+- { ac_try='diff conftest.err0 conftest.err >&5'
+- { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+- (eval $ac_try) 2>&5
+- ac_status=$?
+- echo "$as_me:$LINENO: \$? = $ac_status" >&5
+- (exit $ac_status); }; }
+- if test -z "$pov_prog_cc_flags_err" \
+- || test -z "`diff conftest.err0 conftest.err`"; then
+- eval "$pov_prog_cc_flags_var=yes"
+- else
+- eval "$pov_prog_cc_flags_var=no"
+- fi
+-
+- rm -f conftest.$ac_ext conftest.$ac_objext conftest.err conftest.err0
+- ac_ext=cc
+-ac_cpp='$CXXCPP $CPPFLAGS'
+-ac_compile='$CXX -c $CXXFLAGS $CPPFLAGS conftest.$ac_ext >&5'
+-ac_link='$CXX -o conftest$ac_exeext $CXXFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
+-ac_compiler_gnu=$ac_cv_cxx_compiler_gnu
+-
+-
+-
+-fi
+-
+- eval "pov_prog_cc_flags_value=\$$pov_prog_cc_flags_var"
+- echo "$as_me:$LINENO: result: $pov_prog_cc_flags_value" >&5
+-echo "${ECHO_T}$pov_prog_cc_flags_value" >&6
+-
+- if test x"$pov_prog_cc_flags_value" = x"yes"; then
+- CFLAGS="$CFLAGS -march=$pov_arch -mtune=$pov_arch"
+- :
+- else
+-
+-
+-
+- pov_prog_cc_flags_var=pov_cv_prog_cc_flags`echo -march=$pov_arch -mcpu=$pov_arch | sed 's,[^a-zA-Z0-9],_,g'`
+- pov_prog_cc_flags_regexp=`echo -march=$pov_arch -mcpu=$pov_arch | sed 's,\(-.\)\([^[:space:]]*\),\\\\\1|\2,g; s,[[:space:]][[:space:]]*,|,g; s,\(.\)||,\1|\1|,g; s,\(.\)|$,\1|\1,'`
+-
+- echo "$as_me:$LINENO: checking whether $CC accepts -march=$pov_arch -mcpu=$pov_arch" >&5
+-echo $ECHO_N "checking whether $CC accepts -march=$pov_arch -mcpu=$pov_arch... $ECHO_C" >&6
+- if eval "test \"\${$pov_prog_cc_flags_var+set}\" = set"; then
+- echo $ECHO_N "(cached) $ECHO_C" >&6
+-else
+-
+- ac_ext=c
+-ac_cpp='$CPP $CPPFLAGS'
+-ac_compile='$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
+-
+- cat >conftest.$ac_ext <<_ACEOF
+-#line $LINENO "configure"
+-/* confdefs.h. */
+-_ACEOF
+-cat confdefs.h >>conftest.$ac_ext
+-cat >>conftest.$ac_ext <<_ACEOF
+-/* end confdefs.h. */
+-
+-int
+-main ()
+-{
+-
+- ;
+- return 0;
+-}
+-_ACEOF
+- { ac_try='$CC -c conftest.$ac_ext > /dev/null 2> conftest.err0'
+- { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+- (eval $ac_try) 2>&5
+- ac_status=$?
+- echo "$as_me:$LINENO: \$? = $ac_status" >&5
+- (exit $ac_status); }; }
+- { ac_try='$CC -c -march=$pov_arch -mcpu=$pov_arch conftest.$ac_ext > /dev/null 2> conftest.err'
+- { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+- (eval $ac_try) 2>&5
+- ac_status=$?
+- echo "$as_me:$LINENO: \$? = $ac_status" >&5
+- (exit $ac_status); }; }
+- { ac_try='cat conftest.err >&5'
+- { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+- (eval $ac_try) 2>&5
+- ac_status=$?
+- echo "$as_me:$LINENO: \$? = $ac_status" >&5
+- (exit $ac_status); }; }
+- { ac_try='$ac_cv_prog_egrep \"$pov_prog_cc_flags_regexp\" conftest.err 2>&1 > /dev/null'
+- { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+- (eval $ac_try) 2>&5
+- ac_status=$?
+- echo "$as_me:$LINENO: \$? = $ac_status" >&5
+- (exit $ac_status); }; }
+- pov_prog_cc_flags_err=`$ac_cv_prog_egrep "$pov_prog_cc_flags_regexp" conftest.err`
+- { ac_try='diff conftest.err0 conftest.err >&5'
+- { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+- (eval $ac_try) 2>&5
+- ac_status=$?
+- echo "$as_me:$LINENO: \$? = $ac_status" >&5
+- (exit $ac_status); }; }
+- if test -z "$pov_prog_cc_flags_err" \
+- || test -z "`diff conftest.err0 conftest.err`"; then
+- eval "$pov_prog_cc_flags_var=yes"
+- else
+- eval "$pov_prog_cc_flags_var=no"
+- fi
+-
+- rm -f conftest.$ac_ext conftest.$ac_objext conftest.err conftest.err0
+- ac_ext=cc
+-ac_cpp='$CXXCPP $CPPFLAGS'
+-ac_compile='$CXX -c $CXXFLAGS $CPPFLAGS conftest.$ac_ext >&5'
+-ac_link='$CXX -o conftest$ac_exeext $CXXFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
+-ac_compiler_gnu=$ac_cv_cxx_compiler_gnu
+-
+-
+-
+-fi
+-
+- eval "pov_prog_cc_flags_value=\$$pov_prog_cc_flags_var"
+- echo "$as_me:$LINENO: result: $pov_prog_cc_flags_value" >&5
+-echo "${ECHO_T}$pov_prog_cc_flags_value" >&6
+-
+- if test x"$pov_prog_cc_flags_value" = x"yes"; then
+- CFLAGS="$CFLAGS -march=$pov_arch -mcpu=$pov_arch"
+- :
+- else
+- :
+- fi
+-
+-
+- fi
+-
+- }
+- fi
+-
+- else
+-
+-
+-
+-
+- # Create a unique cache-id name (multiple flags are handled).
+- pov_prog_cxx_flags_var=pov_cv_prog_cxx_flags`echo -march=$pov_arch -mcpu=$pov_arch | sed 's,[^a-zA-Z0-9],_,g'`
+-
+- # Create the extended regular expression to handle multiple flags.
+- # For instance, "-first-flag -second-flag -X" gives the regexp:
+- # "\-f|irst-flag|\-s|econd-flag|\-X|X"
+- #
+- # FreeBSD and Darwin seem to have a problem with the \+ sed construct
+- # (but apparently not with the \{x,y\} one). For safety, I prefer to
+- # use [[:space:]][[:space:]]* for [[:space:]]\+
+- pov_prog_cxx_flags_regexp=`echo -march=$pov_arch -mcpu=$pov_arch | sed 's,\(-.\)\([^[:space:]]*\),\\\\\1|\2,g; s,[[:space:]][[:space:]]*,|,g; s,\(.\)||,\1|\1|,g; s,\(.\)|$,\1|\1,'`
+-
+- # Cannot use AC_CACHE_CHECK due to the nature of the cache-id variable.
+- echo "$as_me:$LINENO: checking whether $CXX accepts -march=$pov_arch -mcpu=$pov_arch" >&5
+-echo $ECHO_N "checking whether $CXX accepts -march=$pov_arch -mcpu=$pov_arch... $ECHO_C" >&6
+- if eval "test \"\${$pov_prog_cxx_flags_var+set}\" = set"; then
+- echo $ECHO_N "(cached) $ECHO_C" >&6
+-else
+-
+- # Create a conftest file for CXX.
+- ac_ext=cc
+-ac_cpp='$CXXCPP $CPPFLAGS'
+-ac_compile='$CXX -c $CXXFLAGS $CPPFLAGS conftest.$ac_ext >&5'
+-ac_link='$CXX -o conftest$ac_exeext $CXXFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
+-ac_compiler_gnu=$ac_cv_cxx_compiler_gnu
+-
+- cat >conftest.$ac_ext <<_ACEOF
+-#line $LINENO "configure"
+-/* confdefs.h. */
+-_ACEOF
+-cat confdefs.h >>conftest.$ac_ext
+-cat >>conftest.$ac_ext <<_ACEOF
+-/* end confdefs.h. */
+-
+-int
+-main ()
+-{
+-
+- ;
+- return 0;
+-}
+-_ACEOF
+-
+- # Compile with $CXX and inspect standard error for given flags.
+- { ac_try='$CXX -c conftest.$ac_ext > /dev/null 2> conftest.err0'
+- { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+- (eval $ac_try) 2>&5
+- ac_status=$?
+- echo "$as_me:$LINENO: \$? = $ac_status" >&5
+- (exit $ac_status); }; }
+- { ac_try='$CXX -c -march=$pov_arch -mcpu=$pov_arch conftest.$ac_ext > /dev/null 2> conftest.err'
+- { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+- (eval $ac_try) 2>&5
+- ac_status=$?
+- echo "$as_me:$LINENO: \$? = $ac_status" >&5
+- (exit $ac_status); }; }
+- { ac_try='cat conftest.err >&5'
+- { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+- (eval $ac_try) 2>&5
+- ac_status=$?
+- echo "$as_me:$LINENO: \$? = $ac_status" >&5
+- (exit $ac_status); }; }
+- { ac_try='$ac_cv_prog_egrep \"$pov_prog_cxx_flags_regexp\" conftest.err 2>&1 > /dev/null'
+- { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+- (eval $ac_try) 2>&5
+- ac_status=$?
+- echo "$as_me:$LINENO: \$? = $ac_status" >&5
+- (exit $ac_status); }; }
+- # the command above seems to not always return the correct status, so
+- # for safety I rerun it here; I keep the other one for logging purpose.
+- pov_prog_cxx_flags_err=`$ac_cv_prog_egrep "$pov_prog_cxx_flags_regexp" conftest.err`
+- { ac_try='diff conftest.err0 conftest.err >&5'
+- { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+- (eval $ac_try) 2>&5
+- ac_status=$?
+- echo "$as_me:$LINENO: \$? = $ac_status" >&5
+- (exit $ac_status); }; }
+- if test -z "$pov_prog_cxx_flags_err" \
+- || test -z "`diff conftest.err0 conftest.err`"; then
+- eval "$pov_prog_cxx_flags_var=yes"
+- else
+- eval "$pov_prog_cxx_flags_var=no"
+- fi
+-
+- rm -f conftest.$ac_ext conftest.$ac_objext conftest.err conftest.err0
+- ac_ext=cc
+-ac_cpp='$CXXCPP $CPPFLAGS'
+-ac_compile='$CXX -c $CXXFLAGS $CPPFLAGS conftest.$ac_ext >&5'
+-ac_link='$CXX -o conftest$ac_exeext $CXXFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
+-ac_compiler_gnu=$ac_cv_cxx_compiler_gnu
+-
+-
+-
+-fi
+-
+- eval "pov_prog_cxx_flags_value=\$$pov_prog_cxx_flags_var"
+- echo "$as_me:$LINENO: result: $pov_prog_cxx_flags_value" >&5
+-echo "${ECHO_T}$pov_prog_cxx_flags_value" >&6
+-
+- # Update CXXFLAGS when flags are working, and run provided actions.
+- if test x"$pov_prog_cxx_flags_value" = x"yes"; then
+- CXXFLAGS="$CXXFLAGS -march=$pov_arch -mcpu=$pov_arch"
+-
+- if test "$subdirs"; then
+- {
+-
+-
+- pov_prog_cc_flags_var=pov_cv_prog_cc_flags`echo -march=$pov_arch -mcpu=$pov_arch | sed 's,[^a-zA-Z0-9],_,g'`
+- pov_prog_cc_flags_regexp=`echo -march=$pov_arch -mcpu=$pov_arch | sed 's,\(-.\)\([^[:space:]]*\),\\\\\1|\2,g; s,[[:space:]][[:space:]]*,|,g; s,\(.\)||,\1|\1|,g; s,\(.\)|$,\1|\1,'`
+-
+- echo "$as_me:$LINENO: checking whether $CC accepts -march=$pov_arch -mcpu=$pov_arch" >&5
+-echo $ECHO_N "checking whether $CC accepts -march=$pov_arch -mcpu=$pov_arch... $ECHO_C" >&6
+- if eval "test \"\${$pov_prog_cc_flags_var+set}\" = set"; then
+- echo $ECHO_N "(cached) $ECHO_C" >&6
+-else
+-
+- ac_ext=c
+-ac_cpp='$CPP $CPPFLAGS'
+-ac_compile='$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
+-
+- cat >conftest.$ac_ext <<_ACEOF
+-#line $LINENO "configure"
+-/* confdefs.h. */
+-_ACEOF
+-cat confdefs.h >>conftest.$ac_ext
+-cat >>conftest.$ac_ext <<_ACEOF
+-/* end confdefs.h. */
+-
+-int
+-main ()
+-{
+-
+- ;
+- return 0;
+-}
+-_ACEOF
+- { ac_try='$CC -c conftest.$ac_ext > /dev/null 2> conftest.err0'
+- { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+- (eval $ac_try) 2>&5
+- ac_status=$?
+- echo "$as_me:$LINENO: \$? = $ac_status" >&5
+- (exit $ac_status); }; }
+- { ac_try='$CC -c -march=$pov_arch -mcpu=$pov_arch conftest.$ac_ext > /dev/null 2> conftest.err'
+- { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+- (eval $ac_try) 2>&5
+- ac_status=$?
+- echo "$as_me:$LINENO: \$? = $ac_status" >&5
+- (exit $ac_status); }; }
+- { ac_try='cat conftest.err >&5'
+- { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+- (eval $ac_try) 2>&5
+- ac_status=$?
+- echo "$as_me:$LINENO: \$? = $ac_status" >&5
+- (exit $ac_status); }; }
+- { ac_try='$ac_cv_prog_egrep \"$pov_prog_cc_flags_regexp\" conftest.err 2>&1 > /dev/null'
+- { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+- (eval $ac_try) 2>&5
+- ac_status=$?
+- echo "$as_me:$LINENO: \$? = $ac_status" >&5
+- (exit $ac_status); }; }
+- pov_prog_cc_flags_err=`$ac_cv_prog_egrep "$pov_prog_cc_flags_regexp" conftest.err`
+- { ac_try='diff conftest.err0 conftest.err >&5'
+- { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+- (eval $ac_try) 2>&5
+- ac_status=$?
+- echo "$as_me:$LINENO: \$? = $ac_status" >&5
+- (exit $ac_status); }; }
+- if test -z "$pov_prog_cc_flags_err" \
+- || test -z "`diff conftest.err0 conftest.err`"; then
+- eval "$pov_prog_cc_flags_var=yes"
+- else
+- eval "$pov_prog_cc_flags_var=no"
+- fi
+-
+- rm -f conftest.$ac_ext conftest.$ac_objext conftest.err conftest.err0
+- ac_ext=cc
+-ac_cpp='$CXXCPP $CPPFLAGS'
+-ac_compile='$CXX -c $CXXFLAGS $CPPFLAGS conftest.$ac_ext >&5'
+-ac_link='$CXX -o conftest$ac_exeext $CXXFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
+-ac_compiler_gnu=$ac_cv_cxx_compiler_gnu
+-
+-
+-
+-fi
+-
+- eval "pov_prog_cc_flags_value=\$$pov_prog_cc_flags_var"
+- echo "$as_me:$LINENO: result: $pov_prog_cc_flags_value" >&5
+-echo "${ECHO_T}$pov_prog_cc_flags_value" >&6
+-
+- if test x"$pov_prog_cc_flags_value" = x"yes"; then
+- CFLAGS="$CFLAGS -march=$pov_arch -mcpu=$pov_arch"
+- :
+- else
+- :
+- fi
+- }
+- fi
+-
+- else
+-
+-
+-
+-
+- # Create a unique cache-id name (multiple flags are handled).
+- pov_prog_cxx_flags_var=pov_cv_prog_cxx_flags`echo -march=$pov_arch | sed 's,[^a-zA-Z0-9],_,g'`
+-
+- # Create the extended regular expression to handle multiple flags.
+- # For instance, "-first-flag -second-flag -X" gives the regexp:
+- # "\-f|irst-flag|\-s|econd-flag|\-X|X"
+- #
+- # FreeBSD and Darwin seem to have a problem with the \+ sed construct
+- # (but apparently not with the \{x,y\} one). For safety, I prefer to
+- # use [[:space:]][[:space:]]* for [[:space:]]\+
+- pov_prog_cxx_flags_regexp=`echo -march=$pov_arch | sed 's,\(-.\)\([^[:space:]]*\),\\\\\1|\2,g; s,[[:space:]][[:space:]]*,|,g; s,\(.\)||,\1|\1|,g; s,\(.\)|$,\1|\1,'`
+-
+- # Cannot use AC_CACHE_CHECK due to the nature of the cache-id variable.
+- echo "$as_me:$LINENO: checking whether $CXX accepts -march=$pov_arch" >&5
+-echo $ECHO_N "checking whether $CXX accepts -march=$pov_arch... $ECHO_C" >&6
+- if eval "test \"\${$pov_prog_cxx_flags_var+set}\" = set"; then
+- echo $ECHO_N "(cached) $ECHO_C" >&6
+-else
+-
+- # Create a conftest file for CXX.
+- ac_ext=cc
+-ac_cpp='$CXXCPP $CPPFLAGS'
+-ac_compile='$CXX -c $CXXFLAGS $CPPFLAGS conftest.$ac_ext >&5'
+-ac_link='$CXX -o conftest$ac_exeext $CXXFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
+-ac_compiler_gnu=$ac_cv_cxx_compiler_gnu
+-
+- cat >conftest.$ac_ext <<_ACEOF
+-#line $LINENO "configure"
+-/* confdefs.h. */
+-_ACEOF
+-cat confdefs.h >>conftest.$ac_ext
+-cat >>conftest.$ac_ext <<_ACEOF
+-/* end confdefs.h. */
+-
+-int
+-main ()
+-{
+-
+- ;
+- return 0;
+-}
+-_ACEOF
+-
+- # Compile with $CXX and inspect standard error for given flags.
+- { ac_try='$CXX -c conftest.$ac_ext > /dev/null 2> conftest.err0'
+- { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+- (eval $ac_try) 2>&5
+- ac_status=$?
+- echo "$as_me:$LINENO: \$? = $ac_status" >&5
+- (exit $ac_status); }; }
+- { ac_try='$CXX -c -march=$pov_arch conftest.$ac_ext > /dev/null 2> 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 $ac_status); }; }
+- { ac_try='cat conftest.err >&5'
+- { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+- (eval $ac_try) 2>&5
+- ac_status=$?
+- echo "$as_me:$LINENO: \$? = $ac_status" >&5
+- (exit $ac_status); }; }
+- { ac_try='$ac_cv_prog_egrep \"$pov_prog_cxx_flags_regexp\" conftest.err 2>&1 > /dev/null'
+- { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+- (eval $ac_try) 2>&5
+- ac_status=$?
+- echo "$as_me:$LINENO: \$? = $ac_status" >&5
+- (exit $ac_status); }; }
+- # the command above seems to not always return the correct status, so
+- # for safety I rerun it here; I keep the other one for logging purpose.
+- pov_prog_cxx_flags_err=`$ac_cv_prog_egrep "$pov_prog_cxx_flags_regexp" conftest.err`
+- { ac_try='diff conftest.err0 conftest.err >&5'
+- { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+- (eval $ac_try) 2>&5
+- ac_status=$?
+- echo "$as_me:$LINENO: \$? = $ac_status" >&5
+- (exit $ac_status); }; }
+- if test -z "$pov_prog_cxx_flags_err" \
+- || test -z "`diff conftest.err0 conftest.err`"; then
+- eval "$pov_prog_cxx_flags_var=yes"
+- else
+- eval "$pov_prog_cxx_flags_var=no"
+- fi
+-
+- rm -f conftest.$ac_ext conftest.$ac_objext conftest.err conftest.err0
+- ac_ext=cc
+-ac_cpp='$CXXCPP $CPPFLAGS'
+-ac_compile='$CXX -c $CXXFLAGS $CPPFLAGS conftest.$ac_ext >&5'
+-ac_link='$CXX -o conftest$ac_exeext $CXXFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
+-ac_compiler_gnu=$ac_cv_cxx_compiler_gnu
+-
+-
+-
+-fi
+-
+- eval "pov_prog_cxx_flags_value=\$$pov_prog_cxx_flags_var"
+- echo "$as_me:$LINENO: result: $pov_prog_cxx_flags_value" >&5
+-echo "${ECHO_T}$pov_prog_cxx_flags_value" >&6
+-
+- # Update CXXFLAGS when flags are working, and run provided actions.
+- if test x"$pov_prog_cxx_flags_value" = x"yes"; then
+- CXXFLAGS="$CXXFLAGS -march=$pov_arch"
+-
+- if test "$subdirs"; then
+- {
+-
+-
+- pov_prog_cc_flags_var=pov_cv_prog_cc_flags`echo -march=$pov_arch | sed 's,[^a-zA-Z0-9],_,g'`
+- pov_prog_cc_flags_regexp=`echo -march=$pov_arch | sed 's,\(-.\)\([^[:space:]]*\),\\\\\1|\2,g; s,[[:space:]][[:space:]]*,|,g; s,\(.\)||,\1|\1|,g; s,\(.\)|$,\1|\1,'`
+-
+- echo "$as_me:$LINENO: checking whether $CC accepts -march=$pov_arch" >&5
+-echo $ECHO_N "checking whether $CC accepts -march=$pov_arch... $ECHO_C" >&6
+- if eval "test \"\${$pov_prog_cc_flags_var+set}\" = set"; then
+- echo $ECHO_N "(cached) $ECHO_C" >&6
+-else
+-
+- ac_ext=c
+-ac_cpp='$CPP $CPPFLAGS'
+-ac_compile='$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
+-
+- cat >conftest.$ac_ext <<_ACEOF
+-#line $LINENO "configure"
+-/* confdefs.h. */
+-_ACEOF
+-cat confdefs.h >>conftest.$ac_ext
+-cat >>conftest.$ac_ext <<_ACEOF
+-/* end confdefs.h. */
+-
+-int
+-main ()
+-{
+-
+- ;
+- return 0;
+-}
+-_ACEOF
+- { ac_try='$CC -c conftest.$ac_ext > /dev/null 2> conftest.err0'
+- { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+- (eval $ac_try) 2>&5
+- ac_status=$?
+- echo "$as_me:$LINENO: \$? = $ac_status" >&5
+- (exit $ac_status); }; }
+- { ac_try='$CC -c -march=$pov_arch conftest.$ac_ext > /dev/null 2> 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 $ac_status); }; }
+- { ac_try='cat conftest.err >&5'
+- { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+- (eval $ac_try) 2>&5
+- ac_status=$?
+- echo "$as_me:$LINENO: \$? = $ac_status" >&5
+- (exit $ac_status); }; }
+- { ac_try='$ac_cv_prog_egrep \"$pov_prog_cc_flags_regexp\" conftest.err 2>&1 > /dev/null'
+- { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+- (eval $ac_try) 2>&5
+- ac_status=$?
+- echo "$as_me:$LINENO: \$? = $ac_status" >&5
+- (exit $ac_status); }; }
+- pov_prog_cc_flags_err=`$ac_cv_prog_egrep "$pov_prog_cc_flags_regexp" conftest.err`
+- { ac_try='diff conftest.err0 conftest.err >&5'
+- { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+- (eval $ac_try) 2>&5
+- ac_status=$?
+- echo "$as_me:$LINENO: \$? = $ac_status" >&5
+- (exit $ac_status); }; }
+- if test -z "$pov_prog_cc_flags_err" \
+- || test -z "`diff conftest.err0 conftest.err`"; then
+- eval "$pov_prog_cc_flags_var=yes"
+- else
+- eval "$pov_prog_cc_flags_var=no"
+- fi
+-
+- rm -f conftest.$ac_ext conftest.$ac_objext conftest.err conftest.err0
+- ac_ext=cc
+-ac_cpp='$CXXCPP $CPPFLAGS'
+-ac_compile='$CXX -c $CXXFLAGS $CPPFLAGS conftest.$ac_ext >&5'
+-ac_link='$CXX -o conftest$ac_exeext $CXXFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
+-ac_compiler_gnu=$ac_cv_cxx_compiler_gnu
+-
+-
+-
+-fi
+-
+- eval "pov_prog_cc_flags_value=\$$pov_prog_cc_flags_var"
+- echo "$as_me:$LINENO: result: $pov_prog_cc_flags_value" >&5
+-echo "${ECHO_T}$pov_prog_cc_flags_value" >&6
+-
+- if test x"$pov_prog_cc_flags_value" = x"yes"; then
+- CFLAGS="$CFLAGS -march=$pov_arch"
+- :
+- else
+- :
+- fi
+- }
+- fi
+-
+- else
+-
+- if test "$pov_arch_fallback"; then
+- {
+-
+-
+-
+- # Create a unique cache-id name (multiple flags are handled).
+- pov_prog_cxx_flags_var=pov_cv_prog_cxx_flags`echo -march=$pov_arch_fallback | sed 's,[^a-zA-Z0-9],_,g'`
+-
+- # Create the extended regular expression to handle multiple flags.
+- # For instance, "-first-flag -second-flag -X" gives the regexp:
+- # "\-f|irst-flag|\-s|econd-flag|\-X|X"
+- #
+- # FreeBSD and Darwin seem to have a problem with the \+ sed construct
+- # (but apparently not with the \{x,y\} one). For safety, I prefer to
+- # use [[:space:]][[:space:]]* for [[:space:]]\+
+- pov_prog_cxx_flags_regexp=`echo -march=$pov_arch_fallback | sed 's,\(-.\)\([^[:space:]]*\),\\\\\1|\2,g; s,[[:space:]][[:space:]]*,|,g; s,\(.\)||,\1|\1|,g; s,\(.\)|$,\1|\1,'`
+-
+- # Cannot use AC_CACHE_CHECK due to the nature of the cache-id variable.
+- echo "$as_me:$LINENO: checking whether $CXX accepts -march=$pov_arch_fallback" >&5
+-echo $ECHO_N "checking whether $CXX accepts -march=$pov_arch_fallback... $ECHO_C" >&6
+- if eval "test \"\${$pov_prog_cxx_flags_var+set}\" = set"; then
+- echo $ECHO_N "(cached) $ECHO_C" >&6
+-else
+-
+- # Create a conftest file for CXX.
+- ac_ext=cc
+-ac_cpp='$CXXCPP $CPPFLAGS'
+-ac_compile='$CXX -c $CXXFLAGS $CPPFLAGS conftest.$ac_ext >&5'
+-ac_link='$CXX -o conftest$ac_exeext $CXXFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
+-ac_compiler_gnu=$ac_cv_cxx_compiler_gnu
+-
+- cat >conftest.$ac_ext <<_ACEOF
+-#line $LINENO "configure"
+-/* confdefs.h. */
+-_ACEOF
+-cat confdefs.h >>conftest.$ac_ext
+-cat >>conftest.$ac_ext <<_ACEOF
+-/* end confdefs.h. */
+-
+-int
+-main ()
+-{
+-
+- ;
+- return 0;
+-}
+-_ACEOF
+-
+- # Compile with $CXX and inspect standard error for given flags.
+- { ac_try='$CXX -c conftest.$ac_ext > /dev/null 2> conftest.err0'
+- { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+- (eval $ac_try) 2>&5
+- ac_status=$?
+- echo "$as_me:$LINENO: \$? = $ac_status" >&5
+- (exit $ac_status); }; }
+- { ac_try='$CXX -c -march=$pov_arch_fallback conftest.$ac_ext > /dev/null 2> 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 $ac_status); }; }
+- { ac_try='cat conftest.err >&5'
+- { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+- (eval $ac_try) 2>&5
+- ac_status=$?
+- echo "$as_me:$LINENO: \$? = $ac_status" >&5
+- (exit $ac_status); }; }
+- { ac_try='$ac_cv_prog_egrep \"$pov_prog_cxx_flags_regexp\" conftest.err 2>&1 > /dev/null'
+- { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+- (eval $ac_try) 2>&5
+- ac_status=$?
+- echo "$as_me:$LINENO: \$? = $ac_status" >&5
+- (exit $ac_status); }; }
+- # the command above seems to not always return the correct status, so
+- # for safety I rerun it here; I keep the other one for logging purpose.
+- pov_prog_cxx_flags_err=`$ac_cv_prog_egrep "$pov_prog_cxx_flags_regexp" conftest.err`
+- { ac_try='diff conftest.err0 conftest.err >&5'
+- { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+- (eval $ac_try) 2>&5
+- ac_status=$?
+- echo "$as_me:$LINENO: \$? = $ac_status" >&5
+- (exit $ac_status); }; }
+- if test -z "$pov_prog_cxx_flags_err" \
+- || test -z "`diff conftest.err0 conftest.err`"; then
+- eval "$pov_prog_cxx_flags_var=yes"
+- else
+- eval "$pov_prog_cxx_flags_var=no"
+- fi
+-
+- rm -f conftest.$ac_ext conftest.$ac_objext conftest.err conftest.err0
+- ac_ext=cc
+-ac_cpp='$CXXCPP $CPPFLAGS'
+-ac_compile='$CXX -c $CXXFLAGS $CPPFLAGS conftest.$ac_ext >&5'
+-ac_link='$CXX -o conftest$ac_exeext $CXXFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
+-ac_compiler_gnu=$ac_cv_cxx_compiler_gnu
+-
+-
+-
+-fi
+-
+- eval "pov_prog_cxx_flags_value=\$$pov_prog_cxx_flags_var"
+- echo "$as_me:$LINENO: result: $pov_prog_cxx_flags_value" >&5
+-echo "${ECHO_T}$pov_prog_cxx_flags_value" >&6
+-
+- # Update CXXFLAGS when flags are working, and run provided actions.
+- if test x"$pov_prog_cxx_flags_value" = x"yes"; then
+- CXXFLAGS="$CXXFLAGS -march=$pov_arch_fallback"
+- if test "$subdirs"; then {
+-
+-
+- pov_prog_cc_flags_var=pov_cv_prog_cc_flags`echo $pov_arch_fallback | sed 's,[^a-zA-Z0-9],_,g'`
+- pov_prog_cc_flags_regexp=`echo $pov_arch_fallback | sed 's,\(-.\)\([^[:space:]]*\),\\\\\1|\2,g; s,[[:space:]][[:space:]]*,|,g; s,\(.\)||,\1|\1|,g; s,\(.\)|$,\1|\1,'`
+-
+- echo "$as_me:$LINENO: checking whether $CC accepts $pov_arch_fallback" >&5
+-echo $ECHO_N "checking whether $CC accepts $pov_arch_fallback... $ECHO_C" >&6
+- if eval "test \"\${$pov_prog_cc_flags_var+set}\" = set"; then
+- echo $ECHO_N "(cached) $ECHO_C" >&6
+-else
+-
+- ac_ext=c
+-ac_cpp='$CPP $CPPFLAGS'
+-ac_compile='$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
+-
+- cat >conftest.$ac_ext <<_ACEOF
+-#line $LINENO "configure"
+-/* confdefs.h. */
+-_ACEOF
+-cat confdefs.h >>conftest.$ac_ext
+-cat >>conftest.$ac_ext <<_ACEOF
+-/* end confdefs.h. */
+-
+-int
+-main ()
+-{
+-
+- ;
+- return 0;
+-}
+-_ACEOF
+- { ac_try='$CC -c conftest.$ac_ext > /dev/null 2> conftest.err0'
+- { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+- (eval $ac_try) 2>&5
+- ac_status=$?
+- echo "$as_me:$LINENO: \$? = $ac_status" >&5
+- (exit $ac_status); }; }
+- { ac_try='$CC -c $pov_arch_fallback conftest.$ac_ext > /dev/null 2> 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 $ac_status); }; }
+- { ac_try='cat conftest.err >&5'
+- { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+- (eval $ac_try) 2>&5
+- ac_status=$?
+- echo "$as_me:$LINENO: \$? = $ac_status" >&5
+- (exit $ac_status); }; }
+- { ac_try='$ac_cv_prog_egrep \"$pov_prog_cc_flags_regexp\" conftest.err 2>&1 > /dev/null'
+- { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+- (eval $ac_try) 2>&5
+- ac_status=$?
+- echo "$as_me:$LINENO: \$? = $ac_status" >&5
+- (exit $ac_status); }; }
+- pov_prog_cc_flags_err=`$ac_cv_prog_egrep "$pov_prog_cc_flags_regexp" conftest.err`
+- { ac_try='diff conftest.err0 conftest.err >&5'
+- { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+- (eval $ac_try) 2>&5
+- ac_status=$?
+- echo "$as_me:$LINENO: \$? = $ac_status" >&5
+- (exit $ac_status); }; }
+- if test -z "$pov_prog_cc_flags_err" \
+- || test -z "`diff conftest.err0 conftest.err`"; then
+- eval "$pov_prog_cc_flags_var=yes"
+- else
+- eval "$pov_prog_cc_flags_var=no"
+- fi
+-
+- rm -f conftest.$ac_ext conftest.$ac_objext conftest.err conftest.err0
+- ac_ext=cc
+-ac_cpp='$CXXCPP $CPPFLAGS'
+-ac_compile='$CXX -c $CXXFLAGS $CPPFLAGS conftest.$ac_ext >&5'
+-ac_link='$CXX -o conftest$ac_exeext $CXXFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
+-ac_compiler_gnu=$ac_cv_cxx_compiler_gnu
+-
+-
+-
+-fi
+-
+- eval "pov_prog_cc_flags_value=\$$pov_prog_cc_flags_var"
+- echo "$as_me:$LINENO: result: $pov_prog_cc_flags_value" >&5
+-echo "${ECHO_T}$pov_prog_cc_flags_value" >&6
+-
+- if test x"$pov_prog_cc_flags_value" = x"yes"; then
+- CFLAGS="$CFLAGS $pov_arch_fallback"
+- :
+- else
+- :
+- fi
+- }; fi
+-
+- else
+- :
+- fi
+-
+- }
+- fi
+-
+-
+- fi
+-
+-
+-
+- fi
+-
+-
+-
+- fi
+-
+- fi
+-
# gcc says -malign-double makes no sense in the 64bit mode and reject it
- for pov_flags in "-malign-double" "-minline-all-stringops"; do
+ for pov_flags in "-minline-all-stringops"; do
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