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* tls.m4 (GCC_CHECK_TLS): Rename have_tls to gcc_cv_have_tls.

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(GCC_CHECK_CC_TLS): Rename have_cc_tls to gcc_cv_have_cc_tls.
This commit is contained in:
Maciej W. Rozycki 2007-10-16 10:45:50 +00:00
parent 9ffbf372a2
commit 415d93d6d6
2 changed files with 16 additions and 11 deletions
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5
config/ChangeLog
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@ -1,3 +1,8 @@
2007-10-15 Maciej W. Rozycki <macro@linux-mips.org>
* tls.m4 (GCC_CHECK_TLS): Rename have_tls to gcc_cv_have_tls.
(GCC_CHECK_CC_TLS): Rename have_cc_tls to gcc_cv_have_cc_tls.
2007-10-03 Richard Sandiford <richard@codesourcery.com>
* no-executables.m4 (GCC_TRY_COMPILE_OR_LINK): New function.

22
config/tls.m4
View file

@ -2,7 +2,7 @@ dnl Check whether the target supports TLS.
AC_DEFUN([GCC_CHECK_TLS], [
GCC_ENABLE(tls, yes, [], [Use thread-local storage])
AC_CACHE_CHECK([whether the target supports thread-local storage],
have_tls, [
gcc_cv_have_tls, [
AC_RUN_IFELSE([__thread int a; int b; int main() { return a = b; }],
[dnl If the test case passed with dynamic linking, try again with
dnl static linking, but only if static linking is supported (not
@ -11,10 +11,10 @@ AC_DEFUN([GCC_CHECK_TLS], [
LDFLAGS="-static $LDFLAGS"
AC_LINK_IFELSE([int main() { return 0; }],
AC_RUN_IFELSE([__thread int a; int b; int main() { return a = b; }],
[have_tls=yes], [have_tls=no],[]),
[have_tls=yes])
[gcc_cv_have_tls=yes], [gcc_cv_have_tls=no],[]),
[gcc_cv_have_tls=yes])
LDFLAGS="$chktls_save_LDFLAGS"
if test $have_tls = yes; then
if test $gcc_cv_have_tls = yes; then
dnl So far, the binutils and the compiler support TLS.
dnl Also check whether the libc supports TLS, i.e. whether a variable
dnl with __thread linkage has a different address in different threads.
@ -58,18 +58,18 @@ AC_DEFUN([GCC_CHECK_TLS], [
if (pthread_join (thread, &thread_retval))
return 0;
return (a_in_other_thread == a_in_main_thread);])],
[have_tls=yes], [have_tls=no], [])
[gcc_cv_have_tls=yes], [gcc_cv_have_tls=no], [])
CFLAGS="$chktls_save_CFLAGS"
fi
fi],
[have_tls=no],
[gcc_cv_have_tls=no],
[dnl This is the cross-compiling case. Assume libc supports TLS if the
dnl binutils and the compiler do.
AC_LINK_IFELSE([__thread int a; int b; int main() { return a = b; }],
[have_tls=yes], [have_tls=no])
[gcc_cv_have_tls=yes], [gcc_cv_have_tls=no])
]
)])
if test "$enable_tls $have_tls" = "yes yes"; then
if test "$enable_tls $gcc_cv_have_tls" = "yes yes"; then
AC_DEFINE(HAVE_TLS, 1,
[Define to 1 if the target supports thread-local storage.])
fi])
@ -78,11 +78,11 @@ dnl Check whether the target assembler supports TLS.
AC_DEFUN([GCC_CHECK_CC_TLS], [
GCC_ENABLE(tls, yes, [], [Use thread-local storage])
AC_CACHE_CHECK([whether the target asssembler upports thread-local storage],
have_cc_tls, [
gcc_cv_have_cc_tls, [
AC_COMPILE_IFELSE([__thread int a; int b; int main() { return a = b; }],
[have_cc_tls=yes], [have_cc_tls=no])]
[gcc_cv_have_cc_tls=yes], [gcc_cv_have_cc_tls=no])]
)])
if test "$enable_tls $have_cc_tls" = "yes yes"; then
if test "$enable_tls $gcc_cv_have_cc_tls" = "yes yes"; then
AC_DEFINE(HAVE_CC_TLS, 1,
[Define to 1 if the target assembler supports thread-local storage.])
fi])