config.if

   1 #! /dev/null
   2 # Don't call it directly. This shell script fragment is called to
   3 # determine:
   4 #
   5 #       1. libstcxx_incdir: the interface name for libstdc++.
   6 #
   7
   8 # Get the top level src dir.
   9 if [ -z "${topsrcdir}" -a -z "${top_srcdir}" ]
  10 then
  11   echo "Undefined top level src dir: topsrcdir and top_srcdir are empty" >&2
  12   exit 1
  13 fi
  14
  15 if [ -n "${topsrcdir}" ]
  16 then
  17   if_topsrcdir=${topsrcdir}
  18 else
  19   if_topsrcdir=${top_srcdir}
  20 fi
  21
  22 # Set libstdcxx_incdir.
  23 # This is the same as gcc/configure.in and libstdc++-v3/acinclude.m4.
  24 if test -z "$gcc_version"; then
  25   if test -z "${gcc_version_trigger}" \
  26      && test -f ${if_topsrcdir}/gcc/version.c; then
  27     gcc_version_trigger=${if_topsrcdir}/gcc/version.c
  28   fi
  29   if test -f "${gcc_version_trigger}"; then
  30     gcc_version_full=`grep version_string "${gcc_version_trigger}" | sed -e 's/.*"\([^"]*\)".*/\1/'`
  31   else
  32     gcc_version_full=`$CC -v 2>&1 | sed -n 's/^gcc version //p'`
  33   fi
  34   gcc_version=`echo ${gcc_version_full} | sed -e 's/\([^ ]*\) .*/\1/'`
  35 fi
  36 libstdcxx_incdir=c++/${gcc_version}
  37