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copied from http://www.nabble.com/-PATCH--Define-RTLD_SINGLE_THREAD_P-on-ARM-tf3814888.html
--- glibc-2.6/glibc-ports-2.6.1/sysdeps/unix/sysv/linux/arm/nptl/sysdep-cancel.h 2007-07-03 11:03:16.000000000 +0200
+++ glibc-2.6/ports/sysdeps/unix/sysv/linux/arm/nptl/sysdep-cancel.h 2007-07-03 11:04:30.000000000 +0200
@@ -126,3 +126,9 @@
# define NO_CANCELLATION 1 #endif +
+#ifndef __ASSEMBLER__
+# define RTLD_SINGLE_THREAD_P \
+ __builtin_expect (THREAD_GETMEM (THREAD_SELF, \
+ header.multiple_threads) == 0, 1)
+#endif
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