gas/aclocal.m4

   1 dnl
   2 dnl The autoconf 1.107 version of this doesn't substitute variables
   3 dnl in the names of the links or their targets.  This is a problem...
   4 dnl
   5 undefine([AC_OUTPUT_LINKS])dnl
   6 define(AC_OUTPUT_LINKS,
   7 [EOF
   8
   9 cat >> ${CONFIG_STATUS} <<EOF
  10 ac_links="$1"
  11 ac_files="$2"
  12 EOF
  13
  14 cat >> ${CONFIG_STATUS} <<\EOF
  15 while test -n "${ac_files}"; do
  16   set ${ac_links}; ac_link=[$]1; shift; ac_links=[$]*
  17   set ${ac_files}; ac_file=[$]1; shift; ac_files=[$]*
  18
  19   echo "linking ${ac_link} to ${srcdir}/${ac_file}"
  20
  21   if test ! -r ${srcdir}/${ac_file}; then
  22     AC_MSG_ERROR(${srcdir}/${ac_file}: File not found)
  23   fi
  24   rm -f ${ac_link}
  25   # Make a symlink if possible; otherwise try a hard link.
  26   if ln -s ${srcdir}/${ac_file} ${ac_link} 2>/dev/null ||
  27     ln ${srcdir}/${ac_file} ${ac_link}; then :
  28   else
  29     AC_MSG_ERROR(can not link ${ac_link} to ${srcdir}/${ac_file})
  30   fi
  31 done
  32 ])dnl
  33 dnl
  34 dnl This ugly hack is needed because the Cygnus configure script won't
  35 dnl tell us what CC is going to be, and "cc" isn't always right.  (The
  36 dnl top-level Makefile will always override anything we choose here, so
  37 dnl the usual gcc/cc selection is useless.)
  38 dnl
  39 dnl It knows where it is in the tree; don't try using it elsewhere.
  40 dnl
  41 undefine([AC_PROG_CC])dnl
  42 define(AC_PROG_CC,
  43 [AC_BEFORE([$0], [AC_PROG_CPP])dnl
  44 AC_PROVIDE([$0])dnl
  45 dnl
  46 dnl The ugly bit...
  47 dnl
  48 AC_MSG_CHECKING([for CC])
  49 dnl Don't bother with cache.
  50 test -z "$CC" && CC=`egrep '^CC *=' ../Makefile | tail -1 | sed 's/^CC *= *//'`
  51 test -z "$CC" && CC=cc
  52 AC_MSG_RESULT(setting CC to $CC)
  53 AC_SUBST(CC)
  54 dnl
  55 dnl
  56 # Find out if we are using GNU C, under whatever name.
  57 cat > conftest.c <<EOF
  58 #ifdef __GNUC__
  59   yes
  60 #endif
  61 EOF
  62 ${CC-cc} -E conftest.c > conftest.out 2>&1
  63 if egrep yes conftest.out >/dev/null 2>&1; then
  64   GCC=yes
  65 else
  66   GCC=
  67 fi
  68 rm -f conftest*
  69 ])dnl