mirror of
https://sourceware.org/git/glibc.git
synced 2024-11-25 06:20:06 +00:00
98ffc1bfeb
As discussed at the patch review meeting Signed-off-by: Andreas K. Hüttel <dilfridge@gentoo.org> Reviewed-by: Simon Chopin <simon.chopin@canonical.com>
96 lines
3.2 KiB
Plaintext
96 lines
3.2 KiB
Plaintext
# This file is generated from configure.ac by Autoconf. DO NOT EDIT!
|
|
# Local configure fragment for sysdeps/s390/s390-64.
|
|
|
|
# Minimal checking for static PIE support in ld.
|
|
# Compare to ld testcase/bugzilla:
|
|
# <binutils-source>/ld/testsuite/ld-elf/pr22263-1.rd
|
|
{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking for s390-specific static PIE requirements (runtime check)" >&5
|
|
printf %s "checking for s390-specific static PIE requirements (runtime check)... " >&6; }
|
|
if { as_var=\
|
|
libc_cv_s390x_staticpie_req_runtime; eval test \${$as_var+y}; }
|
|
then :
|
|
printf %s "(cached) " >&6
|
|
else case e in #(
|
|
e) cat > conftest1.c <<EOF
|
|
__thread int * foo;
|
|
|
|
void
|
|
bar (void)
|
|
{
|
|
*foo = 1;
|
|
}
|
|
|
|
void bar2 (void);
|
|
void* bar2_ifunc (void) __asm__ ("bar2");
|
|
__asm__ (".type bar2, %gnu_indirect_function");
|
|
void* bar2_ifunc (void) { return 0; }
|
|
EOF
|
|
cat > conftest2.c <<EOF
|
|
extern __thread int *foo;
|
|
extern void bar (void);
|
|
extern void bar2 (void);
|
|
static int x;
|
|
|
|
int
|
|
main ()
|
|
{
|
|
foo = &x;
|
|
bar2 ();
|
|
return 0;
|
|
}
|
|
EOF
|
|
libc_cv_s390x_staticpie_req_runtime=no
|
|
# Check if the static linker does not generate dynamic TLS relocs in PIE
|
|
# (binutils PR ld/22263), if it accepts --no-dynamic-linker
|
|
# (by using -static-pie), and if it adds a DT_JMPREL pointing to .rela.iplt
|
|
# with static pie.
|
|
if { ac_try='${CC-cc} $CFLAGS $CPPFLAGS $LDFLAGS -fPIE -c conftest1.c -o conftest1.o'
|
|
{ { eval echo "\"\$as_me\":${as_lineno-$LINENO}: \"$ac_try\""; } >&5
|
|
(eval $ac_try) 2>&5
|
|
ac_status=$?
|
|
printf "%s\n" "$as_me:${as_lineno-$LINENO}: \$? = $ac_status" >&5
|
|
test $ac_status = 0; }; } \
|
|
&& { ac_try='${CC-cc} $CFLAGS $CPPFLAGS $LDFLAGS -fPIE -c conftest2.c -o conftest2.o'
|
|
{ { eval echo "\"\$as_me\":${as_lineno-$LINENO}: \"$ac_try\""; } >&5
|
|
(eval $ac_try) 2>&5
|
|
ac_status=$?
|
|
printf "%s\n" "$as_me:${as_lineno-$LINENO}: \$? = $ac_status" >&5
|
|
test $ac_status = 0; }; } \
|
|
&& { ac_try='${CC-cc} $CFLAGS $CPPFLAGS $LDFLAGS -static-pie -nostartfiles -nostdlib -fPIE -o conftest conftest1.o conftest2.o'
|
|
{ { eval echo "\"\$as_me\":${as_lineno-$LINENO}: \"$ac_try\""; } >&5
|
|
(eval $ac_try) 2>&5
|
|
ac_status=$?
|
|
printf "%s\n" "$as_me:${as_lineno-$LINENO}: \$? = $ac_status" >&5
|
|
test $ac_status = 0; }; } \
|
|
&& { ac_try='! LC_ALL=C $READELF -Wr conftest | grep R_390_TLS_TPOFF'
|
|
{ { eval echo "\"\$as_me\":${as_lineno-$LINENO}: \"$ac_try\""; } >&5
|
|
(eval $ac_try) 2>&5
|
|
ac_status=$?
|
|
printf "%s\n" "$as_me:${as_lineno-$LINENO}: \$? = $ac_status" >&5
|
|
test $ac_status = 0; }; } \
|
|
&& { ac_try='LC_ACLL=C $READELF -d conftest | grep JMPREL'
|
|
{ { eval echo "\"\$as_me\":${as_lineno-$LINENO}: \"$ac_try\""; } >&5
|
|
(eval $ac_try) 2>&5
|
|
ac_status=$?
|
|
printf "%s\n" "$as_me:${as_lineno-$LINENO}: \$? = $ac_status" >&5
|
|
test $ac_status = 0; }; }
|
|
then
|
|
libc_cv_s390x_staticpie_req_runtime=yes
|
|
fi
|
|
rm -rf conftest.* ;;
|
|
esac
|
|
fi
|
|
eval ac_res=\$\
|
|
libc_cv_s390x_staticpie_req_runtime
|
|
{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $ac_res" >&5
|
|
printf "%s\n" "$ac_res" >&6; }
|
|
|
|
if test $libc_cv_s390x_staticpie_req_runtime = yes; then
|
|
# Some kernels might fail with /proc/sys/kernel/randomize_va_space set to 0
|
|
# due not enough space for a brk call. However, there is no reliable way to
|
|
# test it.
|
|
printf "%s\n" "#define SUPPORT_STATIC_PIE 1" >>confdefs.h
|
|
|
|
fi
|
|
|