[glibc/maskray/lld] elf: Skip tst-auditlogmod-* if the linker doesn't support --depaudit [BZ #28151]

[Fangrui Song <maskray@sourceware.org>]

https://sourceware.org/git/gitweb.cgi?p=glibc.git;h=9926f6e2eeb374cf729d4bb3f092dd4b36a8f861

commit 9926f6e2eeb374cf729d4bb3f092dd4b36a8f861
Author: Fangrui Song <maskray@google.com>
Date:   Tue Aug 24 09:35:32 2021 -0700

    elf: Skip tst-auditlogmod-* if the linker doesn't support --depaudit [BZ #28151]
    
    gold and ld.lld do not support --audit or --depaudit.
    
    Reviewed-by: Adhemerval Zanella  <adhemerval.zanella@linaro.org>

Diff:
---
 configure    | 34 ++++++++++++++++++++++++++++++++++
 configure.ac |  4 ++++
 elf/Makefile |  4 +++-
 3 files changed, 41 insertions(+), 1 deletion(-)

diff --git a/configure b/configure
index 7272fbf6ea..61ff26487e 100755
--- a/configure
+++ b/configure
@@ -5969,6 +5969,40 @@ $as_echo "$libc_linker_feature" >&6; }
 config_vars="$config_vars
 have-z-start-stop-gc = $libc_cv_z_start_stop_gc"
 
+{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for linker that supports --depaudit" >&5
+$as_echo_n "checking for linker that supports --depaudit... " >&6; }
+libc_linker_feature=no
+if test x"$gnu_ld" = x"yes"; then
+  libc_linker_check=`$LD -v --help 2>/dev/null | grep "\--depaudit"`
+  if test -n "$libc_linker_check"; then
+    cat > conftest.c <<EOF
+int _start (void) { return 42; }
+EOF
+    if { ac_try='${CC-cc} $CFLAGS $CPPFLAGS $LDFLAGS $no_ssp
+				-Wl,--depaudit,x -nostdlib -nostartfiles
+				-fPIC -shared -o conftest.so conftest.c
+				1>&5'
+  { { eval echo "\"\$as_me\":${as_lineno-$LINENO}: \"$ac_try\""; } >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  $as_echo "$as_me:${as_lineno-$LINENO}: \$? = $ac_status" >&5
+  test $ac_status = 0; }; }
+    then
+      libc_linker_feature=yes
+    fi
+    rm -f conftest*
+  fi
+fi
+if test $libc_linker_feature = yes; then
+  libc_cv_depaudit=yes
+else
+  libc_cv_depaudit=no
+fi
+{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $libc_linker_feature" >&5
+$as_echo "$libc_linker_feature" >&6; }
+config_vars="$config_vars
+have-depaudit = $libc_cv_depaudit"
+
 { $as_echo "$as_me:${as_lineno-$LINENO}: checking for linker that supports --no-dynamic-linker" >&5
 $as_echo_n "checking for linker that supports --no-dynamic-linker... " >&6; }
 libc_linker_feature=no
diff --git a/configure.ac b/configure.ac
index af47cd51e6..e250f0e20b 100644
--- a/configure.ac
+++ b/configure.ac
@@ -1337,6 +1337,10 @@ LIBC_LINKER_FEATURE([-z start-stop-gc], [-Wl,-z,start-stop-gc],
 		    [libc_cv_z_start_stop_gc=yes], [libc_cv_z_start_stop_gc=no])
 LIBC_CONFIG_VAR([have-z-start-stop-gc], [$libc_cv_z_start_stop_gc])
 
+LIBC_LINKER_FEATURE([--depaudit], [-Wl,--depaudit,x],
+		    [libc_cv_depaudit=yes], [libc_cv_depaudit=no])
+LIBC_CONFIG_VAR([have-depaudit], [$libc_cv_depaudit])
+
 LIBC_LINKER_FEATURE([--no-dynamic-linker],
 		    [-Wl,--no-dynamic-linker],
 		    [libc_cv_no_dynamic_linker=yes],
diff --git a/elf/Makefile b/elf/Makefile
index 725537c40b..9f3fadc37e 100644
--- a/elf/Makefile
+++ b/elf/Makefile
@@ -219,7 +219,6 @@ tests += restest1 preloadtest loadfail multiload origtest resolvfail \
 	 tst-dlopen-self tst-auditmany tst-initfinilazyfail tst-dlopenfail \
 	 tst-dlopenfail-2 \
 	 tst-filterobj tst-filterobj-dlopen tst-auxobj tst-auxobj-dlopen \
-	 tst-audit14 tst-audit15 tst-audit16 tst-audit17 \
 	 tst-single_threaded tst-single_threaded-pthread \
 	 tst-tls-ie tst-tls-ie-dlmopen argv0test \
 	 tst-glibc-hwcaps tst-glibc-hwcaps-prepend tst-glibc-hwcaps-mask \
@@ -238,6 +237,9 @@ selinux-enabled := $(shell cat /selinux/enforce 2> /dev/null)
 ifneq ($(selinux-enabled),1)
 tests-execstack-yes = tst-execstack tst-execstack-needed tst-execstack-prog
 endif
+ifeq ($(have-depaudit),yes)
+tests += tst-audit14 tst-audit15 tst-audit16
+endif
 endif
 tests += $(tests-execstack-$(have-z-execstack))
 ifeq ($(run-built-tests),yes)