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| author | H.J. Lu <hjl.tools@gmail.com> | 2017-08-04 12:17:15 -0700 |
|---|---|---|
| committer | H.J. Lu <hjl.tools@gmail.com> | 2017-08-04 12:17:30 -0700 |
| commit | 19f1a11e7ea2a5082bae9d9a079338c5658ba954 (patch) | |
| tree | 242caa3dcb915548b8541f4552e849e06c1ffb19 /configure | |
| parent | 3093fd5e5d418b91411aa9b061850b8773433cf7 (diff) | |
| download | glibc-19f1a11e7ea2a5082bae9d9a079338c5658ba954.tar.gz glibc-19f1a11e7ea2a5082bae9d9a079338c5658ba954.tar.xz glibc-19f1a11e7ea2a5082bae9d9a079338c5658ba954.zip | |
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-x | configure | 33 |
1 files changed, 33 insertions, 0 deletions
diff --git a/configure b/configure index d8e1c50e11..e6a54d7841 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 : |