diff mbox

[PULL,7/9] configure: require __thread support

Message ID 1431089344-20350-8-git-send-email-pbonzini@redhat.com
State New
Headers show

Commit Message

Paolo Bonzini May 8, 2015, 12:49 p.m. UTC 
From: "Emilio G. Cota" <cota@braap.org>

The codebase doesn't build without __thread support.
Formalise this requirement by adding a check for it in the
configure script.

Signed-off-by: Emilio G. Cota <cota@braap.org>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
---
 configure | 11 +++++++++++
 1 file changed, 11 insertions(+)
diff mbox

Patch

diff --git a/configure b/configure
index 75a4def..40bc49a 100755
--- a/configure
+++ b/configure
@@ -1556,6 +1556,17 @@  if test "$static" = "yes" ; then
   fi
 fi
 
+# Unconditional check for compiler __thread support
+  cat > $TMPC << EOF
+static __thread int tls_var;
+int main(void) { return tls_var; }
+EOF
+
+if ! compile_prog "-Werror" "" ; then
+    error_exit "Your compiler does not support the __thread specifier for " \
+	"Thread-Local Storage (TLS). Please upgrade to a version that does."
+fi
+
 if test "$pie" = ""; then
   case "$cpu-$targetos" in
     i386-Linux|x86_64-Linux|x32-Linux|i386-OpenBSD|x86_64-OpenBSD)