support tls in cross-compile

AC_RUN_IFELSE will fail in cross-compile, we can use AC_COMPILE_IFELSE replace. Signed-off-by: duguhaotian <duguhaotian@gmail.com>

support tls in cross-compile
3f962af8 · duguhaotian · Christian Brauner · af41287e · 3f962af8
Unverified Commit 3f962af8 authored May 30, 2018 by duguhaotian Committed by Christian Brauner Dec 10, 2018
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tls.m4 config/tls.m4 +1 -1

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--- a/config/tls.m4
+++ b/config/tls.m4
@@ -5,7 +5,7 @@
 AC_DEFUN([LXC_CHECK_TLS],
 [
    AC_MSG_CHECKING(for TLS)
-    AC_RUN_IFELSE([AC_LANG_SOURCE([[ static __thread int val; int main() { return 0; } ]])],[have_tls=yes],[have_tls=no],[have_tls=no ])
+    AC_COMPILE_IFELSE([AC_LANG_SOURCE([[ static __thread int val; int main() { return 0; } ]])],[have_tls=yes],[have_tls=no],[have_tls=no ])
    AC_MSG_RESULT($have_tls)
    if test "$have_tls" = "yes"; then
        AC_DEFINE([HAVE_TLS],[1],[Define if the compiler supports __thread])