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lttng-libust: fix build with modern uClibc versions

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uClibc got sched_getcpu in 0.9.33, so the compat workaround should only
be used for older uClibc versions.

Signed-off-by: Peter Korsgaard <jacmet@sunsite.dk>
This commit is contained in:
Peter Korsgaard 2012-04-26 11:04:56 +02:00
parent eb19e82861
commit 04bd5067a2
1 changed files with 32 additions and 0 deletions
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32
package/lttng-libust/lttng-libust-uclibc-sched_getcpu.patch Normal file
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@ -0,0 +1,32 @@
[PATCH] fix build with modern uClibc
uClibc has sched_getcpu since 0.9.33, so the compat workaround should only
be used for older uClibc versions.
Signed-off-by: Peter Korsgaard <jacmet@sunsite.dk>
---
liblttng-ust/compat.h | 5 +++++
1 file changed, 5 insertions(+)
Index: lttng-ust-1.9.2/liblttng-ust/compat.h
===================================================================
--- lttng-ust-1.9.2.orig/liblttng-ust/compat.h
+++ lttng-ust-1.9.2/liblttng-ust/compat.h
@@ -17,6 +17,10 @@
#include <sys/syscall.h>
#ifdef __UCLIBC__
+/* old uClibc versions didn't have sched_getcpu */
+#if __UCLIBC_MAJOR__ == 0 && \
+ (__UCLIBC_MINOR__ < 9 || \
+ (__UCLIBC_MINOR__ == 9 && __UCLIBC_SUBLEVEL__ <= 32))
#define __getcpu(cpu, node, cache) syscall(__NR_getcpu, cpu, node, cache)
static inline
int sched_getcpu(void)
@@ -26,5 +30,6 @@
s = __getcpu(&c, NULL, NULL);
return (s == -1) ? s : c;
}
+#endif /* <= 0.9.32 */
#endif /* __UCLIBC__ */
#endif /* _UST_COMPAT_H */