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| author | Roland McGrath <roland@redhat.com> | 2009-01-23 03:23:02 -0800 |
|---|---|---|
| committer | Roland McGrath <roland@redhat.com> | 2009-01-23 03:23:02 -0800 |
| commit | 8181739c44410da185ca2da897e0cc9fb2361c87 (patch) | |
| tree | ab3f0ecd3b716dbe9bafd9a6757da59ebd281d18 /configure.ac | |
| parent | 7a2a59144d6de340e8f4a3340a6bf3f5a4ac6dcd (diff) | |
| download | elfutils-8181739c44410da185ca2da897e0cc9fb2361c87.tar.gz | |
(__thread check): Use AC_LINK_IFELSE, in case of building with compiler support but no working runtime support.
Diffstat (limited to 'configure.ac')
| -rw-r--r-- | configure.ac | 11 |
1 files changed, 6 insertions, 5 deletions
diff --git a/configure.ac b/configure.ac index 3dcabbe1..657bf501 100644 --- a/configure.ac +++ b/configure.ac @@ -74,12 +74,13 @@ CFLAGS="$old_CFLAGS"]) AS_IF([test "x$ac_cv_c99" != xyes], AC_MSG_ERROR([gcc with C99 support required])) -AC_CACHE_CHECK([for gcc with TLS support], ac_cv_tls, [dnl -AC_COMPILE_IFELSE([dnl -__thread int a; int foo (int b) { return a + b; }], - ac_cv_tls=yes, ac_cv_tls=no)]) +AC_CACHE_CHECK([for __thread support], ac_cv_tls, [dnl +AC_LINK_IFELSE([dnl +AC_LANG_PROGRAM([[static __thread int a; int foo (int b) { return a + b; }]], + [[exit (foo (0));]])], + ac_cv_tls=yes, ac_cv_tls=no)]) AS_IF([test "x$ac_cv_tls" != xyes], - AC_MSG_ERROR([gcc with TLS support required])) + AC_MSG_ERROR([__thread support required])) LOCALEDIR=$datadir AC_SUBST(LOCALEDIR) |