With gold set default there is no way that buildsystem
 will let you configure.

 LIBC_PROG_FOO_GNU is somewhat broken.
 LD detection assumes 'ld' is your default linker
 ( even you export LD= or use -fuse-ld= flag )
 While so LIBC_LINKER_FEATURE breaks , because it takes $LD
 ( which is not what you set ).

 However LIBC_LINKER_FEATURE does not need to have libc_linker_check
 because later down it links with -Wl,--no-dynamic-linker in the test,
 meaning it will fail anyway for an linker won't support --no-dynamic-linker.

 By removing that check we can now build with -fuse-ld=bfd in CFLAGS.


diff -Naur glibc-2.29/aclocal.m4 glibc-2.29-p/aclocal.m4
--- glibc-2.29/aclocal.m4	2019-01-31 17:45:36.000000000 +0100
+++ glibc-2.29-p/aclocal.m4	2019-05-19 09:12:47.992978444 +0200
@@ -99,6 +99,12 @@
 AC_DEFUN([LIBC_PROG_FOO_GNU],
 [# Most GNU programs take a -v and spit out some text including
 # the word 'GNU'.  Some try to read stdin, so give them /dev/null.
+# yes but that breaks LD gold/bfd with static pie at least
+# *if* you have gold defalt. Gold does not support --no-dynamic-linker
+# but with the way buidsystem is done there is _NO_ way to set your LD right.
+# so patch LIBC_LINKER_FEATURE ( that is buggy too )
+# gold -> GNU gold (GNU Binutils 2.30) 1.15
+# bfd  -> GNU ld (GNU Binutils) 2.30
 if $1 -o conftest -v </dev/null 2>&1 | grep GNU > /dev/null 2>&1; then
   $2
 else
@@ -114,6 +120,7 @@
     CC="$CC -B$path_binutils"
 fi
 AS=`$CC -print-prog-name=as`
+# wel...
 LD=`$CC -print-prog-name=ld`
 AR=`$CC -print-prog-name=ar`
 AC_SUBST(AR)
@@ -222,9 +229,8 @@
 AC_DEFUN([LIBC_LINKER_FEATURE],
 [AC_MSG_CHECKING([for linker that supports $1])
 libc_linker_feature=no
+dnl That gnu_ld thing is already broken
 if test x"$gnu_ld" = x"yes"; then
-  libc_linker_check=`$LD -v --help 2>/dev/null | grep "\$1"`
-  if test -n "$libc_linker_check"; then
     cat > conftest.c <<EOF
 int _start (void) { return 42; }
 EOF
@@ -236,7 +242,6 @@
       libc_linker_feature=yes
     fi
     rm -f conftest*
-  fi
 fi
 if test $libc_linker_feature = yes; then
   $3
diff -Naur glibc-2.29/configure glibc-2.29-p/configure
--- glibc-2.29/configure	2019-01-31 17:45:36.000000000 +0100
+++ glibc-2.29-p/configure	2019-05-19 08:46:24.115515469 +0200
@@ -5922,8 +5922,6 @@
 $as_echo_n "checking for linker that supports --no-dynamic-linker... " >&6; }
 libc_linker_feature=no
 if test x"$gnu_ld" = x"yes"; then
-  libc_linker_check=`$LD -v --help 2>/dev/null | grep "\--no-dynamic-linker"`
-  if test -n "$libc_linker_check"; then
     cat > conftest.c <<EOF
 int _start (void) { return 42; }
 EOF
@@ -5940,7 +5938,6 @@
       libc_linker_feature=yes
     fi
     rm -f conftest*
-  fi
 fi
 if test $libc_linker_feature = yes; then
   libc_cv_no_dynamic_linker=yes