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path: root/sysdeps/x86_64/elf/configure
blob: 466ccd1b1b6fd730d0765a5e42b0fc9c427a58e0 (plain) (blame)
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 # Local configure fragment for sysdeps/x86_64/elf.

if test "$usetls" != no; then
# Check for support of thread-local storage handling in assembler and linker.
echo $ac_n "checking for x86-64 TLS support""... $ac_c" 1>&6
echo "configure:7: checking for x86-64 TLS support" >&5
if eval "test \"`echo '$''{'libc_cv_x86_64_tls'+set}'`\" = set"; then
  echo $ac_n "(cached) $ac_c" 1>&6
else
  cat > conftest.s <<\EOF
	.section ".tdata", "awT", @progbits
	.globl foo
foo:	.quad	1
	.section ".tbss", "awT", @nobits
	.globl bar
bar:	.skip	8
	.text
baz:	leaq	bar@TLSLD(%rip), %rdi
	leaq	bar@DTPOFF(%rax), %rcx
	addq	foo@GOTTPOFF(%rip), %rax
	movq	$bar@TPOFF, %rdx
EOF
if { ac_try='${CC-cc} -c $CFLAGS conftest.s 1>&5'; { (eval echo configure:24: \"$ac_try\") 1>&5; (eval $ac_try) 2>&5; }; }; then
  libc_cv_x86_64_tls=yes
else
  libc_cv_x86_64_tls=no
fi
rm -f conftest*
fi

echo "$ac_t""$libc_cv_x86_64_tls" 1>&6
if test $libc_cv_x86_64_tls = yes; then
  cat >> confdefs.h <<\EOF
#define HAVE_TLS_SUPPORT 1
EOF

fi
fi

cat >> confdefs.h <<\EOF
#define PI_STATIC_AND_HIDDEN 1
EOF