details: http://hg.nginx.org/njs/rev/eed097d72d5e
branches:
changeset: 182:eed097d72d5e
user: Igor Sysoev <igor@sysoev.ru>
date: Mon Sep 26 14:01:39 2016 +0300
description:
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.

diffstat:

nxt/auto/clang | 150 ++++++++++++++++++++++++++++----------------------------
1 files changed, 75 insertions(+), 75 deletions(-)

diffs (177 lines):

diff -r 5ef1091ecfaf -r eed097d72d5e nxt/auto/clang
--- a/nxt/auto/clang Sun Sep 25 10:54:51 2016 +0300
+++ b/nxt/auto/clang Mon Sep 26 14:01:39 2016 +0300
@@ -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

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