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path: root/sysdeps/ia64/elf/configure.in
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GLIBC_PROVIDES dnl See aclocal.m4 in the top level source directory.
# Local configure fragment for sysdeps/ia64/elf.

# Check for support of thread-local storage handling in assembler and
# linker.
AC_CACHE_CHECK(for ia64 TLS support, libc_cv_ia64_tls, [dnl
cat > conftest.s <<\EOF
	.section ".tdata","awT",@progbits
foo:    data8   25
	.text
	addl    r16 = @ltoff(@dtpmod(foo#)), gp
	addl    r17 = @ltoff(@dtprel(foo#)), gp
	addl    r18 = @ltoff(@tprel(foo#)), gp
	addl    r19 = @dtprel(foo#), gp
	adds    r21 = @dtprel(foo#), r13
	movl    r23 = @dtprel(foo#)
	addl    r20 = @tprel(foo#), gp
	adds    r22 = @tprel(foo#), r13
	movl    r24 = @tprel(foo#)
EOF
dnl
if AC_TRY_COMMAND(${CC-cc} -c $CFLAGS conftest.s 1>&AS_MESSAGE_LOG_FD); then
  libc_cv_ia64_tls=yes
else
  libc_cv_ia64_tls=no
fi
rm -f conftest*])
if test $libc_cv_ia64_tls = no; then
  AC_MSG_ERROR([the assembler must support TLS])
fi

dnl It is always possible to access static and hidden symbols in an
dnl position independent way.
AC_DEFINE(PI_STATIC_AND_HIDDEN)