sysdeps/powerpc/powerpc64/configure.ac

   1 GLIBC_PROVIDES dnl See aclocal.m4 in the top level source directory.
   2 # Local configure fragment for sysdeps/powerpc/powerpc64.
   3
   4 AC_CACHE_CHECK(for support for overlapping .opd entries,
   5 libc_cv_overlapping_opd, [dnl
   6 libc_cv_overlapping_opd=no
   7 echo 'void foo (void) {}' > conftest.c
   8 if AC_TRY_COMMAND(${CC-cc} $CFLAGS $CPPFLAGS -S conftest.c -o conftest.s 1>&AS_MESSAGE_LOG_FD); then
   9 changequote(,)dnl
  10   if grep '\.TOC\.@tocbase' conftest.s > /dev/null; then
  11     if grep '\.TOC\.@tocbase[   ]*,[    ]*0' conftest.s > /dev/null; then
  12       :
  13     else
  14       libc_cv_overlapping_opd=yes
  15     fi
  16   fi
  17 changequote([,])dnl
  18 fi
  19 rm -f conftest.c conftest.s
  20 ])
  21 if test x$libc_cv_overlapping_opd = xyes; then
  22   AC_DEFINE(USE_PPC64_OVERLAPPING_OPD)
  23 fi