From 9b21e6bcf8986e076ca8aa4862bb76b76605e591 Mon Sep 17 00:00:00 2001 From: Roland McGrath Date: Tue, 15 Oct 2002 22:50:43 +0000 Subject: 2002-10-16 Jakub Jelinek * include/libc-symbols.h (attribute_tls_model_ie): Define. * include/errno.h (errno): Define to __libc_errno in libc.so. Add attribute_tls_model_ie. * include/netdb.h (h_errno): Define to __libc_h_errno in libc.so. Add attribute_tls_model_ie. * include/resolv.h (_res): Define to __libc_res in libc.so. Add attribute_tls_model_ie. * inet/herrno.c (__libc_h_errno): Add hidden alias to h_errno. (h_errno): Define. * resolv/res_libc.c (__libc_res): Add hidden alias to _res. (_res): Define. * sysdeps/generic/bits/libc-tsd.h (__libc_tsd_define): Add attribute_tls_model_ie. * sysdeps/generic/errno-loc.c (errno): Only undefine if not using __thread. * sysdeps/generic/errno.c (__libc_errno): Add hidden alias to errno. * sysdeps/unix/sysv/linux/i386/sysdep.h (SYSCALL_ERROR_HANDLER): Use __libc_errno in USE___THREAD case. * sysdeps/unix/sysv/linux/x86_64/sysdep.h (SYSCALL_ERROR_HANDLER): Likewise. * configure.in (HAVE_TLS_MODEL_ATTRIBUTE): Check for __attribute__((tls_model (""))). * configure: Rebuilt. * config.h.in (HAVE_TLS_MODEL_ATTRIBUTE): Add. --- configure.in | 16 ++++++++++++++++ 1 file changed, 16 insertions(+) (limited to 'configure.in') diff --git a/configure.in b/configure.in index c115be5..8983031 100644 --- a/configure.in +++ b/configure.in @@ -1624,6 +1624,22 @@ if test "$libc_cv_gcc___thread" = yes; then AC_DEFINE(HAVE___THREAD) fi +if test "$libc_cv_gcc___thread" = yes; then + dnl Check whether the compiler supports the tls_model attribute. + AC_CACHE_CHECK([for tls_model attribute], libc_cv_gcc_tls_model_attr, [dnl + cat > conftest.c <<\EOF +extern __thread int a __attribute__((tls_model ("initial-exec"))); +EOF + if AC_TRY_COMMAND([${CC-cc} $CFLAGS -S -Werror conftest.c >&AC_FD_CC]); then + libc_cv_gcc_tls_model_attr=yes + else + libc_cv_gcc_tls_model_attr=no + fi + rm -f conftest*]) + if test "$libc_cv_gcc_tls_model_attr" = yes; then + AC_DEFINE(HAVE_TLS_MODEL_ATTRIBUTE) + fi +fi dnl Check whether we have the gd library available. AC_MSG_CHECKING(for libgd) -- cgit v1.1