diff options
Diffstat (limited to 'libobjc/configure')
| -rwxr-xr-x | libobjc/configure | 217 |
1 files changed, 214 insertions, 3 deletions
diff --git a/libobjc/configure b/libobjc/configure index 1dfcb31bd21..ffa3a88cdd4 100755 --- a/libobjc/configure +++ b/libobjc/configure @@ -718,6 +718,7 @@ with_pic enable_fast_install with_gnu_ld enable_libtool_lock +enable_tls enable_sjlj_exceptions ' ac_precious_vars='build_alias @@ -1351,6 +1352,7 @@ Optional Features: --enable-fast-install[=PKGS] optimize for fast installation [default=yes] --disable-libtool-lock avoid locking (might break parallel builds) + --enable-tls Use thread-local storage [default=yes] --enable-sjlj-exceptions force use of builtin_setjmp for exceptions @@ -10566,7 +10568,7 @@ else lt_dlunknown=0; lt_dlno_uscore=1; lt_dlneed_uscore=2 lt_status=$lt_dlunknown cat > conftest.$ac_ext <<_LT_EOF -#line 10569 "configure" +#line 10571 "configure" #include "confdefs.h" #if HAVE_DLFCN_H @@ -10672,7 +10674,7 @@ else lt_dlunknown=0; lt_dlno_uscore=1; lt_dlneed_uscore=2 lt_status=$lt_dlunknown cat > conftest.$ac_ext <<_LT_EOF -#line 10675 "configure" +#line 10677 "configure" #include "confdefs.h" #if HAVE_DLFCN_H @@ -11232,6 +11234,215 @@ $as_echo "#define HAVE_GTHR_DEFAULT 1" >>confdefs.h fi +# Check if we have thread-local storage + + + # Check whether --enable-tls was given. +if test "${enable_tls+set}" = set; then : + enableval=$enable_tls; + case "$enableval" in + yes|no) ;; + *) as_fn_error "Argument to enable/disable tls must be yes or no" "$LINENO" 5 ;; + esac + +else + enable_tls=yes +fi + + + { $as_echo "$as_me:${as_lineno-$LINENO}: checking whether the target supports thread-local storage" >&5 +$as_echo_n "checking whether the target supports thread-local storage... " >&6; } +if test "${gcc_cv_have_tls+set}" = set; then : + $as_echo_n "(cached) " >&6 +else + + if test "$cross_compiling" = yes; then : + if test x$gcc_no_link = xyes; then + as_fn_error "Link tests are not allowed after GCC_NO_EXECUTABLES." "$LINENO" 5 +fi +cat confdefs.h - <<_ACEOF >conftest.$ac_ext +/* end confdefs.h. */ +__thread int a; int b; int main() { return a = b; } +_ACEOF +if ac_fn_c_try_link "$LINENO"; then : + chktls_save_LDFLAGS="$LDFLAGS" + case $host in + *-*-linux*) + LDFLAGS="-shared -Wl,--no-undefined $LDFLAGS" + ;; + esac + chktls_save_CFLAGS="$CFLAGS" + CFLAGS="-fPIC $CFLAGS" + if test x$gcc_no_link = xyes; then + as_fn_error "Link tests are not allowed after GCC_NO_EXECUTABLES." "$LINENO" 5 +fi +cat confdefs.h - <<_ACEOF >conftest.$ac_ext +/* end confdefs.h. */ +int f() { return 0; } +_ACEOF +if ac_fn_c_try_link "$LINENO"; then : + if test x$gcc_no_link = xyes; then + as_fn_error "Link tests are not allowed after GCC_NO_EXECUTABLES." "$LINENO" 5 +fi +cat confdefs.h - <<_ACEOF >conftest.$ac_ext +/* end confdefs.h. */ +__thread int a; int b; int f() { return a = b; } +_ACEOF +if ac_fn_c_try_link "$LINENO"; then : + gcc_cv_have_tls=yes +else + gcc_cv_have_tls=no +fi +rm -f core conftest.err conftest.$ac_objext \ + conftest$ac_exeext conftest.$ac_ext +else + gcc_cv_have_tls=yes +fi +rm -f core conftest.err conftest.$ac_objext \ + conftest$ac_exeext conftest.$ac_ext + CFLAGS="$chktls_save_CFLAGS" + LDFLAGS="$chktls_save_LDFLAGS" +else + gcc_cv_have_tls=no +fi +rm -f core conftest.err conftest.$ac_objext \ + conftest$ac_exeext conftest.$ac_ext + + +else + cat confdefs.h - <<_ACEOF >conftest.$ac_ext +/* end confdefs.h. */ +__thread int a; int b; int main() { return a = b; } +_ACEOF +if ac_fn_c_try_run "$LINENO"; then : + chktls_save_LDFLAGS="$LDFLAGS" + LDFLAGS="-static $LDFLAGS" + if test x$gcc_no_link = xyes; then + as_fn_error "Link tests are not allowed after GCC_NO_EXECUTABLES." "$LINENO" 5 +fi +cat confdefs.h - <<_ACEOF >conftest.$ac_ext +/* end confdefs.h. */ +int main() { return 0; } +_ACEOF +if ac_fn_c_try_link "$LINENO"; then : + if test "$cross_compiling" = yes; then : + { { $as_echo "$as_me:${as_lineno-$LINENO}: error: in \`$ac_pwd':" >&5 +$as_echo "$as_me: error: in \`$ac_pwd':" >&2;} +as_fn_error "cannot run test program while cross compiling +See \`config.log' for more details." "$LINENO" 5; } +else + cat confdefs.h - <<_ACEOF >conftest.$ac_ext +/* end confdefs.h. */ +__thread int a; int b; int main() { return a = b; } +_ACEOF +if ac_fn_c_try_run "$LINENO"; then : + gcc_cv_have_tls=yes +else + gcc_cv_have_tls=no +fi +rm -f core *.core core.conftest.* gmon.out bb.out conftest$ac_exeext \ + conftest.$ac_objext conftest.beam conftest.$ac_ext +fi + +else + gcc_cv_have_tls=yes +fi +rm -f core conftest.err conftest.$ac_objext \ + conftest$ac_exeext conftest.$ac_ext + LDFLAGS="$chktls_save_LDFLAGS" + if test $gcc_cv_have_tls = yes; then + chktls_save_CFLAGS="$CFLAGS" + thread_CFLAGS=failed + for flag in '' '-pthread' '-lpthread'; do + CFLAGS="$flag $chktls_save_CFLAGS" + if test x$gcc_no_link = xyes; then + as_fn_error "Link tests are not allowed after GCC_NO_EXECUTABLES." "$LINENO" 5 +fi +cat confdefs.h - <<_ACEOF >conftest.$ac_ext +/* end confdefs.h. */ +#include <pthread.h> + void *g(void *d) { return NULL; } +int +main () +{ +pthread_t t; pthread_create(&t,NULL,g,NULL); + ; + return 0; +} +_ACEOF +if ac_fn_c_try_link "$LINENO"; then : + thread_CFLAGS="$flag" +fi +rm -f core conftest.err conftest.$ac_objext \ + conftest$ac_exeext conftest.$ac_ext + if test "X$thread_CFLAGS" != Xfailed; then + break + fi + done + CFLAGS="$chktls_save_CFLAGS" + if test "X$thread_CFLAGS" != Xfailed; then + CFLAGS="$thread_CFLAGS $chktls_save_CFLAGS" + if test "$cross_compiling" = yes; then : + { { $as_echo "$as_me:${as_lineno-$LINENO}: error: in \`$ac_pwd':" >&5 +$as_echo "$as_me: error: in \`$ac_pwd':" >&2;} +as_fn_error "cannot run test program while cross compiling +See \`config.log' for more details." "$LINENO" 5; } +else + cat confdefs.h - <<_ACEOF >conftest.$ac_ext +/* end confdefs.h. */ +#include <pthread.h> + __thread int a; + static int *volatile a_in_other_thread; + static void * + thread_func (void *arg) + { + a_in_other_thread = &a; + return (void *)0; + } +int +main () +{ +pthread_t thread; + void *thread_retval; + int *volatile a_in_main_thread; + a_in_main_thread = &a; + if (pthread_create (&thread, (pthread_attr_t *)0, + thread_func, (void *)0)) + return 0; + if (pthread_join (thread, &thread_retval)) + return 0; + return (a_in_other_thread == a_in_main_thread); + ; + return 0; +} +_ACEOF +if ac_fn_c_try_run "$LINENO"; then : + gcc_cv_have_tls=yes +else + gcc_cv_have_tls=no +fi +rm -f core *.core core.conftest.* gmon.out bb.out conftest$ac_exeext \ + conftest.$ac_objext conftest.beam conftest.$ac_ext +fi + + CFLAGS="$chktls_save_CFLAGS" + fi + fi +else + gcc_cv_have_tls=no +fi +rm -f core *.core core.conftest.* gmon.out bb.out conftest$ac_exeext \ + conftest.$ac_objext conftest.beam conftest.$ac_ext +fi + +fi +{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $gcc_cv_have_tls" >&5 +$as_echo "$gcc_cv_have_tls" >&6; } + if test "$enable_tls $gcc_cv_have_tls" = "yes yes"; then + +$as_echo "#define HAVE_TLS 1" >>confdefs.h + + fi { $as_echo "$as_me:${as_lineno-$LINENO}: checking for exception model to use" >&5 $as_echo_n "checking for exception model to use... " >&6; } @@ -11246,7 +11457,7 @@ if test "${enable_sjlj_exceptions+set}" = set; then : enableval=$enable_sjlj_exceptions; : else cat > conftest.$ac_ext << EOF -#line 11249 "configure" +#line 11460 "configure" @interface Frob @end @implementation Frob |