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authorH.J. Lu <hjl.tools@gmail.com>2017-08-04 12:17:15 -0700
committerH.J. Lu <hjl.tools@gmail.com>2017-08-04 12:17:30 -0700
commit19f1a11e7ea2a5082bae9d9a079338c5658ba954 (patch)
tree242caa3dcb915548b8541f4552e849e06c1ffb19 /configure
parent3093fd5e5d418b91411aa9b061850b8773433cf7 (diff)
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Check linker support for INSERT in linker script
Since gold doesn't support INSERT in linker script: https://sourceware.org/bugzilla/show_bug.cgi?id=21676 tst-split-dynreloc fails to link with gold. Check if linker supports INSERT in linker script before using it. * config.make.in (have-insert): New. * configure.ac (libc_cv_insert): New. Set to yes if linker supports INSERT in linker script. (AC_SUBST(libc_cv_insert): New. * configure: Regenerated. * sysdeps/x86_64/Makefile (tests): Add tst-split-dynreloc only if $(have-insert) == yes.
Diffstat (limited to 'configure')
-rwxr-xr-xconfigure33
1 files changed, 33 insertions, 0 deletions
diff --git a/configure b/configure
index d8e1c50..e6a54d7 100755
--- a/configure
+++ b/configure
@@ -629,6 +629,7 @@ libc_cv_z_execstack
libc_cv_z_combreloc
ASFLAGS_config
libc_cv_cc_with_libunwind
+libc_cv_insert
libc_cv_protected_data
BISON
INSTALL_INFO
@@ -5716,6 +5717,38 @@ fi
$as_echo "$libc_cv_protected_data" >&6; }
+{ $as_echo "$as_me:${as_lineno-$LINENO}: checking linker support for INSERT in linker script" >&5
+$as_echo_n "checking linker support for INSERT in linker script... " >&6; }
+if ${libc_cv_insert+:} false; then :
+ $as_echo_n "(cached) " >&6
+else
+ cat > conftest.c <<EOF
+ const int __attribute__ ((section(".bar"))) bar = 0x12345678;
+ int test (void) { return bar; }
+EOF
+ cat > conftest.t <<EOF
+ SECTIONS
+ {
+ .bar : { *(.bar) }
+ }
+ INSERT AFTER .rela.dyn;
+EOF
+ libc_cv_insert=no
+ if { ac_try='${CC-cc} -nostdlib -nostartfiles $no_ssp -fPIC -shared conftest.c -Wl,-T,conftest.t -o conftest.so'
+ { { eval echo "\"\$as_me\":${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_cv_insert=yes
+ fi
+ rm -f conftest.*
+
+fi
+{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $libc_cv_insert" >&5
+$as_echo "$libc_cv_insert" >&6; }
+
+
{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for broken __attribute__((alias()))" >&5
$as_echo_n "checking for broken __attribute__((alias()))... " >&6; }
if ${libc_cv_broken_alias_attribute+:} false; then :