# 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