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disable dynamic sized delete support by default

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IFUNC relocations don't support our advanced use case (calling
application function or looking up environment variable).

Particularly, it doesn't work on PPC and arm when tcmalloc is linked
with -Wl,-z,now. See RedHat's bugzilla ticket
https://bugzilla.redhat.com/show_bug.cgi?id=1312462 for more details.
This commit is contained in:
Aliaksey Kandratsenka 2016-03-05 15:08:50 -08:00
parent d4d99eb608
commit 06811b3ae4
1 changed files with 3 additions and 16 deletions
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19
configure.ac
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@ -330,23 +330,10 @@ AM_CONDITIONAL(HAVE_W_NO_UNUSED_RESULT,
test "$perftools_cv_w_no_unused_result" = yes)
AC_ARG_ENABLE([dynamic-sized-delete-support],
[AS_HELP_STRING([--disable-dynamic-sized-delete-support],
[don't try to build run-time switch for sized delete operator])],
[AS_HELP_STRING([--enable-dynamic-sized-delete-support],
[try to build run-time switch for sized delete operator])],
[enable_dyn_sized_delete="$enableval"],
[enable_dyn_sized_delete=default])
AS_IF([test "x$enable_dyn_sized_delete" = xdefault],
[AC_CACHE_CHECK(
[if the compiler supports ifunc attributes for target],
[perftools_cv_ifunc_result],
[AC_COMPILE_IFELSE(
[AC_LANG_PROGRAM([
void *resolve_foo() {return 0;}
void foo() __attribute__((ifunc("resolve_foo")));
],[foo();])],
[perftools_cv_ifunc_result=yes],
[perftools_cv_ifunc_result=no])])]
[enable_dyn_sized_delete=$perftools_cv_ifunc_result])
[enable_dyn_sized_delete=no])
AS_IF([test "x$enable_dyn_sized_delete" = xyes],
[AC_DEFINE([ENABLE_DYNAMIC_SIZED_DELETE], 1,