GLIBC_PROVIDES dnl See aclocal.m4 in the top level source directory.

# Local configure fragment for sysdeps/aarch64.

# We check to see if the compiler and flags are

# selecting the big endian ABI and if they are then

# we set libc_cv_aarch64_be to yes which causes

# HAVE_AARCH64_BE to be defined in config.h and

# in include/libc-symbols.h and thus available to

# shlib-versions to select the appropriate name for

# the dynamic linker via %ifdef.

AC_CACHE_CHECK([for big endian],

  [libc_cv_aarch64_be],

  [AC_EGREP_CPP(yes,[#ifdef __AARCH64EB__

                      yes

                     #endif

  ], libc_cv_aarch64_be=yes, libc_cv_aarch64_be=no)])

if test $libc_cv_aarch64_be = yes; then

  AC_DEFINE(HAVE_AARCH64_BE)

  LIBC_CONFIG_VAR([default-abi], [lp64_be])

else

  LIBC_CONFIG_VAR([default-abi], [lp64])

fi

# Check if binutils supports variant PCS symbols.

AC_CACHE_CHECK([for variant PCS support], [libc_cv_aarch64_variant_pcs], [dnl

  cat > conftest.S <

.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])