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libgo patch committed: Check CPU_COUNT, not glibc version
- From: Ian Lance Taylor <iant at google dot com>
- To: gcc-patches at gcc dot gnu dot org, gofrontend-dev at googlegroups dot com
- Date: Thu, 02 Oct 2014 22:05:06 -0700
- Subject: libgo patch committed: Check CPU_COUNT, not glibc version
- Authentication-results: sourceware.org; auth=none
This patch to libgo, based on one from Bryan Hundven, fixes libgo's use
of CPU_COUNT to check whether CPU_COUNT is defined, rather than checking
the glibc version. This works with other libraries, like uclibc. This
is issue 38 in the gofrontend issue tracker. Bootstrapped and ran Go
testsuite on x86_64-unknown-linux-gnu. Committed to mainline and 4.9
branch.
Ian
diff -r ae56e39c190f libgo/runtime/getncpu-linux.c
--- a/libgo/runtime/getncpu-linux.c Thu Oct 02 10:56:06 2014 -0700
+++ b/libgo/runtime/getncpu-linux.c Thu Oct 02 22:01:22 2014 -0700
@@ -6,7 +6,7 @@
#include <sched.h>
// CPU_COUNT is only provided by glibc 2.6 or higher
-#if !defined(__GLIBC_PREREQ) || !__GLIBC_PREREQ(2, 6)
+#ifndef CPU_COUNT
#define CPU_COUNT(set) _CPU_COUNT((unsigned int *)(set), sizeof(*(set))/sizeof(unsigned int))
static int _CPU_COUNT(unsigned int *set, size_t len) {
int cnt;