sysroot/usr/lib/libpthread.so - platform/prebuilts/gcc/linux-x86/host/x86_64-linux-glibc2.15-4.8 - Gitiles

 /* GNU ld script
    Use the shared library, but some functions are only in
    the static library, so try that secondarily.  */
 OUTPUT_FORMAT(elf64-x86-64)
 GROUP ( libpthread.so.0 libpthread.a )
	/* GNU ld script
	Use the shared library, but some functions are only in
	the static library, so try that secondarily. */
	OUTPUT_FORMAT(elf64-x86-64)
	GROUP ( libpthread.so.0 libpthread.a )