The cause of linker hanging on Linux/PPC64 has been

finally tracked down and thus only the aligment attribute
has been correctly disabled on this platform.

diff --git a/nxt/auto/clang b/nxt/auto/clang
index 686003e1353a06deafeec7fb9a4df65d5e62dd5d..e20efd030bd6ae786afa9663cf03da2f912f933a 100644 (file)
--- a/nxt/auto/clang
+++ b/nxt/auto/clang
@@ -166,6 +166,77 @@ END
 
 # C language features.
 
+nxt_feature="GCC __builtin_expect()"
+nxt_feature_name=NXT_HAVE_BUILTIN_EXPECT
+nxt_feature_run=no
+nxt_feature_incs=
+nxt_feature_libs=
+nxt_feature_test="int main(int argc, char *const *argv) {
+                      if ((__typeof__(argc == 0))
+                                   __builtin_expect((argc == 0), 0))
+                          return 0;
+                      return 1;
+                  }"
+. ${NXT_AUTO}feature
+
+
+nxt_feature="GCC __builtin_unreachable()"
+nxt_feature_name=NXT_HAVE_BUILTIN_UNREACHABLE
+nxt_feature_run=no
+nxt_feature_incs=
+nxt_feature_libs=
+nxt_feature_test="int main() {
+                      __builtin_unreachable();
+                  }"
+. ${NXT_AUTO}feature
+
+
+nxt_feature="GCC __builtin_prefetch()"
+nxt_feature_name=NXT_HAVE_BUILTIN_PREFETCH
+nxt_feature_run=no
+nxt_feature_incs=
+nxt_feature_libs=
+nxt_feature_test="int main() {
+                      __builtin_prefetch(0);
+                  }"
+. ${NXT_AUTO}feature
+
+
+nxt_feature="GCC __attribute__ visibility"
+nxt_feature_name=NXT_HAVE_GCC_ATTRIBUTE_VISIBILITY
+nxt_feature_run=
+nxt_feature_path=
+nxt_feature_libs=
+nxt_feature_test="int n __attribute__ ((visibility(\"default\")));
+
+                  int main() {
+                      return 1;
+                  }"
+. ${NXT_AUTO}feature
+
+
+nxt_feature="GCC __attribute__ malloc"
+nxt_feature_name=NXT_HAVE_GCC_ATTRIBUTE_MALLOC
+nxt_feature_run=
+nxt_feature_path=
+nxt_feature_libs=
+nxt_feature_test="#include <stdlib.h>
+
+                  void *f(void) __attribute__ ((__malloc__));
+
+                  void *f(void) {
+                      return malloc(1);
+                  }
+
+                  int main() {
+                      if (f() != NULL) {
+                          return 1;
+                      }
+                      return 0;
+                  }"
+. ${NXT_AUTO}feature
+
+
 nxt_os="$NXT_SYSTEM/$NXT_SYSTEM_PLATFORM"
 
 if [ "$nxt_os" = "Linux/ppc64le" ]; then
@@ -173,59 +244,10 @@ if [ "$nxt_os" = "Linux/ppc64le" ]; then
     # Old GNU ld linker may hang on Linux ppc64le platform
     # if some of these features are enabled.
 
-    echo "checking for C language features is disabled for $nxt_os."
+    echo "checking for GCC __attribute__ aligned is disabled for $nxt_os."
 
 else
 
-    nxt_feature="GCC __builtin_expect()"
-    nxt_feature_name=NXT_HAVE_BUILTIN_EXPECT
-    nxt_feature_run=no
-    nxt_feature_incs=
-    nxt_feature_libs=
-    nxt_feature_test="int main(int argc, char *const *argv) {
-                         if ((__typeof__(argc == 0))
-                                      __builtin_expect((argc == 0), 0))
-                             return 0;
-                         return 1;
-                     }"
-    . ${NXT_AUTO}feature
-
-
-    nxt_feature="GCC __builtin_unreachable()"
-    nxt_feature_name=NXT_HAVE_BUILTIN_UNREACHABLE
-    nxt_feature_run=no
-    nxt_feature_incs=
-    nxt_feature_libs=
-    nxt_feature_test="int main() {
-                         __builtin_unreachable();
-                     }"
-    . ${NXT_AUTO}feature
-
-
-    nxt_feature="GCC __builtin_prefetch()"
-    nxt_feature_name=NXT_HAVE_BUILTIN_PREFETCH
-    nxt_feature_run=no
-    nxt_feature_incs=
-    nxt_feature_libs=
-    nxt_feature_test="int main() {
-                         __builtin_prefetch(0);
-                     }"
-    . ${NXT_AUTO}feature
-
-
-    nxt_feature="GCC __attribute__ visibility"
-    nxt_feature_name=NXT_HAVE_GCC_ATTRIBUTE_VISIBILITY
-    nxt_feature_run=
-    nxt_feature_path=
-    nxt_feature_libs=
-    nxt_feature_test="int n __attribute__ ((visibility(\"default\")));
-
-                     int main() {
-                         return 1;
-                     }"
-    . ${NXT_AUTO}feature
-
-
     nxt_feature="GCC __attribute__ aligned"
     nxt_feature_name=NXT_HAVE_GCC_ATTRIBUTE_ALIGNED
     nxt_feature_run=
@@ -233,31 +255,9 @@ else
     nxt_feature_libs=
     nxt_feature_test="int n __attribute__ ((aligned(64)));
 
-                     int main() {
-                         return 1;
-                     }"
-    . ${NXT_AUTO}feature
-
-
-    nxt_feature="GCC __attribute__ malloc"
-    nxt_feature_name=NXT_HAVE_GCC_ATTRIBUTE_MALLOC
-    nxt_feature_run=
-    nxt_feature_path=
-    nxt_feature_libs=
-    nxt_feature_test="#include <stdlib.h>
-
-                     void *f(void) __attribute__ ((__malloc__));
-
-                     void *f(void) {
-                         return malloc(1);
-                     }
-
-                     int main() {
-                         if (f() != NULL) {
-                             return 1;
-                         }
-                         return 0;
-                     }"
+                      int main() {
+                          return 1;
+                      }"
     . ${NXT_AUTO}feature
 
 fi