These tests fail to link correctly on musl.

--- binutils-2.29/ld/testsuite/ld-elf/shared.exp.old	2017-07-04 08:43:21.000000000 +0000
+++ binutils-2.29/ld/testsuite/ld-elf/shared.exp	2017-08-19 04:59:05.319481464 +0000
@@ -375,15 +375,6 @@
   {"Build needed3"
    "tmpdir/needed3.o -Wl,--as-needed -Ltmpdir -lneeded3a -lneeded3b -lneeded1b" ""
    {dummy.c} {} "needed3"}
-  {"Build libpr2404a.so"
-   "-shared" "-fPIC"
-   {pr2404a.c} {} "libpr2404a.so"}
-  {"Build libpr2404n.so"
-   "-shared -Wl,-z,now" "-fPIC"
-   {pr2404a.c} {} "libpr2404n.so"}
-  {"Build libpr2404b.a"
-   "" ""
-   {pr2404b.c} {} "libpr2404b.a"}
   {"Build rdynamic-1"
    "-Wl,--no-dynamic-linker,-export-dynamic,--gc-sections" "-ffunction-sections"
    {rdynamic-1.c} {{readelf {-s} rdynamic-1.rd}} "rdynamic-1"}
@@ -531,12 +522,6 @@
     [list "Run relmain" \
      "-Wl,--no-as-needed,-rpath=tmpdir -Ltmpdir -lrel" "" \
      {relmain.c} "relmain" "relmain.out" ] \
-    [list "Run pr2404" \
-     "-Wl,--no-as-needed tmpdir/pr2404b.o tmpdir/libpr2404a.so" "" \
-     {dummy.c} "pr2404" "pr2404.out" ] \
-    [list "Run pr2404n" \
-     "-Wl,-z,now -Wl,--no-as-needed tmpdir/pr2404b.o tmpdir/libpr2404n.so" "" \
-     {dummy.c} "pr2404n" "pr2404.out" ] \
     [list "Run pr18458" \
      "-Wl,--no-as-needed,-z,now tmpdir/libpr18458a.so tmpdir/libpr18458b.so" "" \
      {pr18458c.c} "pr18458" "pass.out" ] \
@@ -675,14 +660,6 @@
      || [istarget *-*-gnu*] } {
     run_cc_link_tests [list \
 	[list \
-	    "Build libpr2404b.a with PIE" \
-	    "" \
-	    "-fPIE" \
-	    { pr2404b.c } \
-	    {} \
-	    "libpr2404b.a" \
-	] \
-	[list \
 	    "Build pr19579a.o" \
 	    "" "-fPIE" \
 	    {pr19579a.c} \
@@ -717,24 +694,6 @@
 	    "-fPIE" \
 	] \
 	[list \
-	    "Run pr2404 with PIE" \
-	    "-pie -Wl,--no-as-needed tmpdir/pr2404b.o tmpdir/libpr2404a.so" \
-	    "" \
-	    { dummy.c } \
-	    "pr2404pie" \
-	    "pr2404.out" \
-	    "-fPIE" \
-	] \
-	[list \
-	    "Run pr2404 with PIE (-z now)" \
-	    "-pie -Wl,-z,now -Wl,--no-as-needed tmpdir/pr2404b.o tmpdir/libpr2404n.so" \
-	    "" \
-	    { dummy.c } \
-	    "pr2404pien" \
-	    "pr2404.out" \
-	    "-fPIE" \
-	] \
-	[list \
 	    "Run pr18718" \
 	    "" \
 	    "" \