diff options
Diffstat (limited to 'sysdeps/riscv/configure')
-rw-r--r-- | sysdeps/riscv/configure | 49 |
1 files changed, 49 insertions, 0 deletions
diff --git a/sysdeps/riscv/configure b/sysdeps/riscv/configure index acd1f5e743..c8f01709f8 100644 --- a/sysdeps/riscv/configure +++ b/sysdeps/riscv/configure @@ -31,3 +31,52 @@ printf "%s\n" "$libc_cv_riscv_r_align" >&6; } config_vars="$config_vars riscv-r-align = $libc_cv_riscv_r_align" +{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking if the toolchain is sufficient to build static PIE on RISC-V" >&5 +printf %s "checking if the toolchain is sufficient to build static PIE on RISC-V... " >&6; } +if test ${libc_cv_static_pie_on_riscv+y} +then : + printf %s "(cached) " >&6 +else $as_nop + + cat > conftest1.S <<\EOF + .globl _start + .type _start, @function +_start: + nop + + .data + /* This should produce an R_RISCV_RELATIVE in the static PIE. */ + .dword _start +EOF + + libc_cv_static_pie_on_riscv=no + if { ac_try='${CC-cc} $CFLAGS $CPPFLAGS $LDFLAGS -static-pie -nostdlib -fPIE -o conftest1 conftest1.S' + { { eval echo "\"\$as_me\":${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 $READELF -Wr conftest1 | grep -q R_RISCV_RELATIVE' + { { eval echo "\"\$as_me\":${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 $READELF -Wl conftest1 | grep -q INTERP' + { { eval echo "\"\$as_me\":${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 $ac_status = 0; }; } + then + libc_cv_static_pie_on_riscv=yes + fi + rm -rf conftest* +fi +{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $libc_cv_static_pie_on_riscv" >&5 +printf "%s\n" "$libc_cv_static_pie_on_riscv" >&6; } + +if test "$libc_cv_static_pie_on_riscv" = yes; then + printf "%s\n" "#define SUPPORT_STATIC_PIE 1" >>confdefs.h + +fi |