diff options
Diffstat (limited to 'configure.ac')
| -rw-r--r-- | configure.ac | 15 |
1 files changed, 9 insertions, 6 deletions
diff --git a/configure.ac b/configure.ac index 19b88a47a5..bdc385d03c 100644 --- a/configure.ac +++ b/configure.ac @@ -442,6 +442,9 @@ libc_config_ok=no # whether to use such directories. with_fp_cond=1 +# A preconfigure script may define another name to TLS descriptor variant +mtls_descriptor=gnu2 + dnl Let sysdeps/*/preconfigure act here. LIBC_PRECONFIGURE([$srcdir], [for sysdeps]) @@ -1287,7 +1290,7 @@ fi rm -f conftest*]) AC_SUBST(libc_cv_has_glob_dat) -AC_CACHE_CHECK([for -mtls-dialect=gnu2], libc_cv_mtls_dialect_gnu2, +AC_CACHE_CHECK([for tls descriptor support], libc_cv_mtls_descriptor, [dnl cat > conftest.c <<EOF __thread int i; @@ -1296,16 +1299,16 @@ void foo (void) i = 10; } EOF -if AC_TRY_COMMAND([${CC-cc} $CFLAGS $CPPFLAGS -fPIC -mtls-dialect=gnu2 -nostdlib -nostartfiles +if AC_TRY_COMMAND([${CC-cc} $CFLAGS $CPPFLAGS -fPIC -mtls-dialect=$mtls_descriptor -nostdlib -nostartfiles -shared conftest.c -o conftest 1>&AS_MESSAGE_LOG_FD]) then - libc_cv_mtls_dialect_gnu2=yes + libc_cv_mtls_descriptor=$mtls_descriptor else - libc_cv_mtls_dialect_gnu2=no + libc_cv_mtls_descriptor=no fi rm -f conftest*]) -AC_SUBST(libc_cv_mtls_dialect_gnu2) -LIBC_CONFIG_VAR([have-mtls-dialect-gnu2], [$libc_cv_mtls_dialect_gnu2]) +AC_SUBST(libc_cv_mtls_descriptor) +LIBC_CONFIG_VAR([have-mtls-descriptor], [$libc_cv_mtls_descriptor]) dnl clang emits an warning for a double alias redirection, to warn the dnl original symbol is sed even when weak definition overrides it. |