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We want to use DT_RUNPATH in preference to DT_RPATH in ELF binaries.

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Otherwise, LD_LIBRARY_PATH does not work when running the tests.
The GNU linker's --enable-new-dtags can be used to do this.
We don't do this on NetBSD where RPATH already supports LD_LIBRARY_PATH.
This commit is contained in:
Todd C. Miller
2020-01-15 10:13:54 -07:00
parent e7eef9c3a5
commit aed69fb471
2 changed files with 87 additions and 0 deletions
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74
configure vendored
View File

@@ -26631,6 +26631,80 @@ fi
fi fi
case "$OS" in
netbsd)
;;
*)
{ $as_echo "$as_me:${as_lineno-$LINENO}: checking whether the linker accepts -Wl,--enable-new-dtags" >&5
$as_echo_n "checking whether the linker accepts -Wl,--enable-new-dtags... " >&6; }
if ${ax_cv_check_ldflags___Wl___enable_new_dtags+:} false; then :
$as_echo_n "(cached) " >&6
else
ax_check_save_flags=$LDFLAGS
LDFLAGS="$LDFLAGS -Wl,--enable-new-dtags"
cat confdefs.h - <<_ACEOF >conftest.$ac_ext
/* end confdefs.h. */
int
main ()
{
;
return 0;
}
_ACEOF
if ac_fn_c_try_link "$LINENO"; then :
ax_cv_check_ldflags___Wl___enable_new_dtags=yes
else
ax_cv_check_ldflags___Wl___enable_new_dtags=no
fi
rm -f core conftest.err conftest.$ac_objext \
conftest$ac_exeext conftest.$ac_ext
LDFLAGS=$ax_check_save_flags
fi
{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $ax_cv_check_ldflags___Wl___enable_new_dtags" >&5
$as_echo "$ax_cv_check_ldflags___Wl___enable_new_dtags" >&6; }
if test x"$ax_cv_check_ldflags___Wl___enable_new_dtags" = xyes; then :
if ${LDFLAGS+:} false; then :
case " $LDFLAGS " in #(
*" -Wl,--enable-new-dtags "*) :
{ { $as_echo "$as_me:${as_lineno-$LINENO}: : LDFLAGS already contains -Wl,--enable-new-dtags"; } >&5
(: LDFLAGS already contains -Wl,--enable-new-dtags) 2>&5
ac_status=$?
$as_echo "$as_me:${as_lineno-$LINENO}: \$? = $ac_status" >&5
test $ac_status = 0; } ;; #(
*) :
as_fn_append LDFLAGS " -Wl,--enable-new-dtags"
{ { $as_echo "$as_me:${as_lineno-$LINENO}: : LDFLAGS=\"\$LDFLAGS\""; } >&5
(: LDFLAGS="$LDFLAGS") 2>&5
ac_status=$?
$as_echo "$as_me:${as_lineno-$LINENO}: \$? = $ac_status" >&5
test $ac_status = 0; }
;;
esac
else
LDFLAGS=-Wl,--enable-new-dtags
{ { $as_echo "$as_me:${as_lineno-$LINENO}: : LDFLAGS=\"\$LDFLAGS\""; } >&5
(: LDFLAGS="$LDFLAGS") 2>&5
ac_status=$?
$as_echo "$as_me:${as_lineno-$LINENO}: \$? = $ac_status" >&5
test $ac_status = 0; }
fi
else
:
fi
;;
esac
if test -n "$GCC"; then if test -n "$GCC"; then
{ $as_echo "$as_me:${as_lineno-$LINENO}: checking whether C compiler accepts -fvisibility=hidden" >&5 { $as_echo "$as_me:${as_lineno-$LINENO}: checking whether C compiler accepts -fvisibility=hidden" >&5
$as_echo_n "checking whether C compiler accepts -fvisibility=hidden... " >&6; } $as_echo_n "checking whether C compiler accepts -fvisibility=hidden... " >&6; }

13
configure.ac
View File

@@ -4170,6 +4170,19 @@ if test -n "$GCC" -a "$lt_cv_prog_gnu_ld" != "yes" -a -n "$GCC"; then
AX_CHECK_COMPILE_FLAG([-static-libgcc], [AX_APPEND_FLAG([-Wc,-static-libgcc], [LT_LDFLAGS])]) AX_CHECK_COMPILE_FLAG([-static-libgcc], [AX_APPEND_FLAG([-Wc,-static-libgcc], [LT_LDFLAGS])])
fi fi
dnl
dnl We want to use DT_RUNPATH in preference to DT_RPATH in ELF binaries.
dnl Otherwise, LD_LIBRARY_PATH does not work when running the tests.
dnl We don't do this on NetBSD where RPATH already supports LD_LIBRARY_PATH.
dnl
case "$OS" in
netbsd)
;;
*)
AX_CHECK_LINK_FLAG([-Wl,--enable-new-dtags], [AX_APPEND_FLAG([-Wl,--enable-new-dtags], [LDFLAGS])])
;;
esac
dnl dnl
dnl Check for symbol visibility support. dnl Check for symbol visibility support.
dnl This test relies on AC_LANG_WERROR dnl This test relies on AC_LANG_WERROR