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| author | Ulrich Drepper <drepper@gmail.com> | 2012-09-09 17:20:42 +0000 |
|---|---|---|
| committer | Jonathan Wakely <redi@gcc.gnu.org> | 2012-09-09 18:20:42 +0100 |
| commit | 3ca6351daa2a4e90af9a97085f8fa316b6ede57f (patch) | |
| tree | 8969affc89fdebd06b8f119befc16b15679f6256 /libstdc++-v3/src | |
| parent | ef64d158fb3ff94c3e6a290586061f3e5a8983f3 (diff) | |
| download | gcc-3ca6351daa2a4e90af9a97085f8fa316b6ede57f.zip gcc-3ca6351daa2a4e90af9a97085f8fa316b6ede57f.tar.gz gcc-3ca6351daa2a4e90af9a97085f8fa316b6ede57f.tar.bz2 | |
re PR bootstrap/54419 (Compiling libstdc++-v3/src/c++11/random.cc fails on platforms not knowing rdrand)
2012-09-09 Ulrich Drepper <drepper@gmail.com>
Dominique d'Humieres <dominiq@lps.ens.fr>
Jack Howarth <howarth@bromo.med.uc.edu>
PR bootstrap/54419
* acinclude.m4: Define GLIBCXX_CHECK_X86_RDRAND.
* configure.ac: Use GLIBCXX_CHECK_X86_RDRAND to test for rdrand
support in assembler.
* src/c++11/random.cc (__x86_rdrand): Depend on _GLIBCXX_X86_RDRAND.
(random_device::_M_init): Likewise.
(random_device::_M_getval): Likewise.
* configure: Regenerated.
* config.h.in: Regenerated.
Co-Authored-By: Dominique d'Humieres <dominiq@lps.ens.fr>
Co-Authored-By: Jack Howarth <howarth@bromo.med.uc.edu>
From-SVN: r191111
Diffstat (limited to 'libstdc++-v3/src')
| -rw-r--r-- | libstdc++-v3/src/c++11/random.cc | 6 |
1 files changed, 3 insertions, 3 deletions
diff --git a/libstdc++-v3/src/c++11/random.cc b/libstdc++-v3/src/c++11/random.cc index 3b05318..4342df4 100644 --- a/libstdc++-v3/src/c++11/random.cc +++ b/libstdc++-v3/src/c++11/random.cc @@ -50,7 +50,7 @@ namespace std _GLIBCXX_VISIBILITY(default) return __ret; } -#if defined __i386__ || defined __x86_64__ +#if (defined __i386__ || defined __x86_64__) && defined _GLIBCXX_X86_RDRAND unsigned int __attribute__ ((target("rdrnd"))) __x86_rdrand(void) @@ -75,7 +75,7 @@ namespace std _GLIBCXX_VISIBILITY(default) if (token == "default") { -#if defined __i386__ || defined __x86_64__ +#if (defined __i386__ || defined __x86_64__) && defined _GLIBCXX_X86_RDRAND unsigned int eax, ebx, ecx, edx; // Check availability of cpuid and, for now at least, also the // CPU signature for Intel's @@ -118,7 +118,7 @@ namespace std _GLIBCXX_VISIBILITY(default) random_device::result_type random_device::_M_getval() { -#if (defined __i386__ || defined __x86_64__) +#if (defined __i386__ || defined __x86_64__) && defined _GLIBCXX_X86_RDRAND if (! _M_file) return __x86_rdrand(); #endif |