Hi,
On 09/06/2012 10:32 PM, howa...@frodo.msbb.uc.edu wrote:
The attached patch eliminates the bootstrap failures in libstdc++-v3
of PR 54419 by adding a define to acinclude.m4, GLIBCXX_CHECK_X86_RDRAND, that
checks for assembler support of the new rdrnd opcode, using this new define
in configure.ac and also defining _GLIBCXX_X86_RDRAND in config.h if supported.
Tested on x86_64-apple-darwin12 against the assembler from Xcode 4.4.1.
Okay for gcc trunk?
Patch is basically Ok. Any particular reason for not using
AC_MSG_CHECKING, AC_CACHE_VAL, and AC_MSG_RESULT, like we normally do in
acinclude.m4? (I think testing in C is fine)
Paolo.
