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(-) acinclude.m4~ (-6 / +6 lines)
 Lines 95-106    Link Here 
  # check for -dumpversion
  # check for -dumpversion
  AC_TRY_COMMAND([$CXX -dumpversion < /dev/null 2> /dev/null > conftest.out])
  AC_TRY_COMMAND([$CXX -dumpversion < /dev/null 2> /dev/null > conftest.out])
  pov_prog_cxx_version=`cat conftest.out | $ac_cv_prog_egrep '[[0-9]]'`
  pov_prog_cxx_version=`cat conftest.out | $EGREP '[[0-9]]'`
  # check for -v
  # check for -v
  if test -z "$pov_prog_cxx_version"; then
  if test -z "$pov_prog_cxx_version"; then
    AC_TRY_COMMAND([$CXX -v < /dev/null 2>&1 | tr A-Z a-z > conftest.out])
    AC_TRY_COMMAND([$CXX -v < /dev/null 2>&1 | tr A-Z a-z > conftest.out])
    pov_prog_cxx_version=`cat conftest.out | $ac_cv_prog_egrep "version" | sed 's,\(.*version[[[:space:]]]*\)\(.*\),\2,'`
    pov_prog_cxx_version=`cat conftest.out | $EGREP "version" | sed 's,\(.*version[[[:space:]]]*\)\(.*\),\2,'`
  fi
  fi
  # final compiler version string
  # final compiler version string
 Lines 155-164    Link Here 
      AC_TRY_COMMAND([$CXX -c conftest.$ac_ext > /dev/null 2> conftest.err0])
      AC_TRY_COMMAND([$CXX -c conftest.$ac_ext > /dev/null 2> conftest.err0])
      AC_TRY_COMMAND([$CXX -c $1 conftest.$ac_ext > /dev/null 2> conftest.err])
      AC_TRY_COMMAND([$CXX -c $1 conftest.$ac_ext > /dev/null 2> conftest.err])
      AC_TRY_COMMAND([cat conftest.err >&5])
      AC_TRY_COMMAND([cat conftest.err >&5])
      AC_TRY_COMMAND([$ac_cv_prog_egrep \"$pov_prog_cxx_flags_regexp\" conftest.err 2>&1 > /dev/null])
      AC_TRY_COMMAND([$EGREP \"$pov_prog_cxx_flags_regexp\" conftest.err 2>&1 > /dev/null])
      # the command above seems to not always return the correct status, so
      # 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.
      # 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`
      pov_prog_cxx_flags_err=`$EGREP "$pov_prog_cxx_flags_regexp" conftest.err`
      AC_TRY_COMMAND([diff conftest.err0 conftest.err >&5])
      AC_TRY_COMMAND([diff conftest.err0 conftest.err >&5])
      if test -z "$pov_prog_cxx_flags_err" \
      if test -z "$pov_prog_cxx_flags_err" \
      || test -z "`diff conftest.err0 conftest.err`"; then
      || test -z "`diff conftest.err0 conftest.err`"; then
 Lines 204-211    Link Here 
      AC_TRY_COMMAND([$CC -c conftest.$ac_ext > /dev/null 2> conftest.err0])
      AC_TRY_COMMAND([$CC -c conftest.$ac_ext > /dev/null 2> conftest.err0])
      AC_TRY_COMMAND([$CC -c $1 conftest.$ac_ext > /dev/null 2> conftest.err])
      AC_TRY_COMMAND([$CC -c $1 conftest.$ac_ext > /dev/null 2> conftest.err])
      AC_TRY_COMMAND([cat conftest.err >&5])
      AC_TRY_COMMAND([cat conftest.err >&5])
      AC_TRY_COMMAND([$ac_cv_prog_egrep \"$pov_prog_cc_flags_regexp\" conftest.err 2>&1 > /dev/null])
      AC_TRY_COMMAND([$EGREP \"$pov_prog_cc_flags_regexp\" conftest.err 2>&1 > /dev/null])
      pov_prog_cc_flags_err=`$ac_cv_prog_egrep "$pov_prog_cc_flags_regexp" conftest.err`
      pov_prog_cc_flags_err=`$EGREP "$pov_prog_cc_flags_regexp" conftest.err`
      AC_TRY_COMMAND([diff conftest.err0 conftest.err >&5])
      AC_TRY_COMMAND([diff conftest.err0 conftest.err >&5])
      if test -z "$pov_prog_cc_flags_err" \
      if test -z "$pov_prog_cc_flags_err" \
      || test -z "`diff conftest.err0 conftest.err`"; then
      || test -z "`diff conftest.err0 conftest.err`"; then