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configure: Make NPTL non-optional

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Now all linux-user targets support building with NPTL, we can make it
mandatory. This is a good idea because:
 * NPTL is no longer new and experimental; it is completely standard
 * in practice, linux-user without NPTL is nearly useless for
   binaries built against non-ancient glibc
 * it allows us to delete the rather untested code for handling
   the non-NPTL configuration

Note that this patch leaves the CONFIG_USE_NPTL ifdefs in the
bsd-user codebase alone. This makes no change for bsd-user, since
our configure test for NPTL had a "#include <linux/futex.h>"
which means bsd-user would never have been compiled with
CONFIG_USE_NPTL defined, and it still is not.

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Richard Henderson <rth@twiddle.net>
Signed-off-by: Riku Voipio <riku.voipio@linaro.org>
This commit is contained in:
Peter Maydell 2013-07-16 18:45:00 +01:00 • committed by Riku Voipio
parent 2667e71c3d
commit 24cb36a61c
6 changed files with 5 additions and 133 deletions
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2
include/exec/gdbstub.h
View file

@ -32,7 +32,7 @@ void gdb_register_coprocessor(CPUArchState *env,
static inline int cpu_index(CPUState *cpu)
{
#if defined(CONFIG_USER_ONLY) && defined(CONFIG_USE_NPTL)
#if defined(CONFIG_USER_ONLY)
return cpu->host_tid;
#else
return cpu->cpu_index + 1;