diff options
Diffstat (limited to 'sysdeps/i386/elf/configure.in')
| -rw-r--r-- | sysdeps/i386/elf/configure.in | 28 |
1 files changed, 28 insertions, 0 deletions
diff --git a/sysdeps/i386/elf/configure.in b/sysdeps/i386/elf/configure.in new file mode 100644 index 0000000000..d7e1704540 --- /dev/null +++ b/sysdeps/i386/elf/configure.in @@ -0,0 +1,28 @@ +sinclude(./aclocal.m4)dnl Autoconf lossage +GLIBC_PROVIDES dnl See aclocal.m4 in the top level source directory. +# Local configure fragment for sysdeps/unix/sysv/linux. + +# Check for support of thread-local storage handling in assembler and +# linker. +AC_CACHE_CHECK(for i386 TLS support, libc_cv_386_tls, [dnl +cat > conftest.s <<\EOF + .section ".tdata", "awT", @progbits +foo: .long 1 + .section ".tbss", "awT", @nobits + .comm bar,4,4 + .text +baz: leal bar@TLSLDM(%ebx), %eax + leal bar@DTPOFF(%eax), %edx + subl foo@GOTTPOFF(%edx), %eax + subl $bar@TPOFF, %eax +EOF +dnl +if AC_TRY_COMMAND(${CC-cc} -c $CFLAGS conftest.s 1>&AC_FD_CC); then + libc_cv_386_tls=yes +else + libc_cv_386_tls=no +fi +rm -f conftest*]) +if test $libc_cv_386_tls = yes; then + AC_DEFINE(HAVE_TLS_SUPPORT) +fi |