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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.ac | |
| parent | Run vismain only if linker supports protected data symbol (diff) | |
| download | glibc-19f1a11e7ea2a5082bae9d9a079338c5658ba954.tar.gz glibc-19f1a11e7ea2a5082bae9d9a079338c5658ba954.tar.bz2 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 $(have-insert) == yes.
Diffstat (limited to 'configure.ac')
| -rw-r--r-- | configure.ac | 21 |
1 files changed, 21 insertions, 0 deletions
diff --git a/configure.ac b/configure.ac index 77456aa8d9..2c6308883c 100644 --- a/configure.ac +++ b/configure.ac @@ -1298,6 +1298,27 @@ EOF ]) AC_SUBST(libc_cv_protected_data) +AC_CACHE_CHECK(linker support for INSERT in linker script, + libc_cv_insert, + [cat > conftest.c <<EOF + const int __attribute__ ((section(".bar"))) bar = 0x12345678; + int test (void) { return bar; } +EOF + cat > conftest.t <<EOF + SECTIONS + { + .bar : { *(.bar) } + } + INSERT AFTER .rela.dyn; +EOF + libc_cv_insert=no + if AC_TRY_COMMAND([${CC-cc} -nostdlib -nostartfiles $no_ssp -fPIC -shared conftest.c -Wl,-T,conftest.t -o conftest.so]); then + libc_cv_insert=yes + fi + rm -f conftest.* + ]) +AC_SUBST(libc_cv_insert) + AC_CACHE_CHECK(for broken __attribute__((alias())), libc_cv_broken_alias_attribute, [cat > conftest.c <<EOF |