diff options
Diffstat (limited to 'sysdeps/aarch64/configure.ac')
| -rw-r--r-- | sysdeps/aarch64/configure.ac | 22 |
1 files changed, 22 insertions, 0 deletions
diff --git a/sysdeps/aarch64/configure.ac b/sysdeps/aarch64/configure.ac index 8b042d6d05..da2a8d81d0 100644 --- a/sysdeps/aarch64/configure.ac +++ b/sysdeps/aarch64/configure.ac @@ -61,3 +61,25 @@ EOF if test $libc_cv_aarch64_pac_ret = yes; then AC_DEFINE(HAVE_AARCH64_PAC_RET) fi + +# Check if binutils supports variant PCS symbols. +AC_CACHE_CHECK([for variant PCS support], [libc_cv_aarch64_variant_pcs], [dnl + cat > conftest.S <<EOF +.global foo +.type foo, %function +.variant_pcs foo +foo: + ret +.global bar +.type bar, %function +bar: + b foo +EOF + libc_cv_aarch64_variant_pcs=no + if AC_TRY_COMMAND([${CC-cc} $CFLAGS $CPPFLAGS $LDFLAGS -nostdlib -nostartfiles $no_ssp -shared -fPIC -o conftest.so conftest.S]) \ + && AC_TRY_COMMAND([$READELF -dW conftest.so | grep -q AARCH64_VARIANT_PCS]) + then + libc_cv_aarch64_variant_pcs=yes + fi + rm -rf conftest.*]) +LIBC_CONFIG_VAR([aarch64-variant-pcs], [$libc_cv_aarch64_variant_pcs]) |