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Allow libgcc-based backtracing on x86.

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Remove autoconf code that explicitly disabled libgcc-based backtracing
on i[3456]86.  There is no mention of which platforms/compilers
exhibited problems when this code was added, and chances are good that
any gcc toolchain issues have long since been fixed.
This commit is contained in:
Jason Evans 2014-03-30 20:35:50 -07:00
parent e181f5aa76
commit 82abf6fe69
1 changed files with 0 additions and 16 deletions
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16
configure.ac
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@ -747,22 +747,6 @@ if test "x$backtrace_method" = "x" -a "x$enable_prof_libgcc" = "x1" \
-a "x$GCC" = "xyes" ; then
AC_CHECK_HEADERS([unwind.h], , [enable_prof_libgcc="0"])
AC_CHECK_LIB([gcc], [_Unwind_Backtrace], [LIBS="$LIBS -lgcc"], [enable_prof_libgcc="0"])
dnl The following is conservative, in that it only has entries for CPUs on
dnl which jemalloc has been tested.
AC_MSG_CHECKING([libgcc-based backtracing reliability on ${host_cpu}])
case "${host_cpu}" in
i[[3456]]86)
AC_MSG_RESULT([unreliable])
enable_prof_libgcc="0";
;;
x86_64)
AC_MSG_RESULT([reliable])
;;
*)
AC_MSG_RESULT([unreliable])
enable_prof_libgcc="0";
;;
esac
if test "x${enable_prof_libgcc}" = "x1" ; then
backtrace_method="libgcc"
AC_DEFINE([JEMALLOC_PROF_LIBGCC], [ ])