diff options
Diffstat (limited to 'ports/sysdeps/alpha/configure.in')
| -rw-r--r-- | ports/sysdeps/alpha/configure.in | 71 |
1 files changed, 71 insertions, 0 deletions
diff --git a/ports/sysdeps/alpha/configure.in b/ports/sysdeps/alpha/configure.in new file mode 100644 index 0000000000..bf8e926657 --- /dev/null +++ b/ports/sysdeps/alpha/configure.in @@ -0,0 +1,71 @@ +GLIBC_PROVIDES dnl See aclocal.m4 in the top level source directory. +# Local configure fragment for sysdeps/alpha. + +# Check for support of thread-local storage handling in assembler and linker. +AC_CACHE_CHECK(for Alpha TLS support, libc_cv_alpha_tls, [dnl +cat > conftest.s <<\EOF + .section ".tdata", "awT", @progbits + .globl foo +foo: .quad 1 + .section ".tbss", "awT", @nobits + .globl bar +bar: .skip 8 + .text +baz: + .set nomacro + ldq $27, __tls_get_addr($29) !literal!1 + ldq $16, a($29) !tlsgd!1 + jsr $26, ($27), __tls_get_addr !lituse_tlsgd!1 + + jsr $26, ($27), __tls_get_addr !lituse_tlsldm!2 + ldq $27, __tls_get_addr($29) !literal!2 + ldq $16, b($29) !tlsldm!2 + + ldq $16, c($29) !tlsgd + ldq $16, d($29) !tlsldm + + ldq $16, e($29) !tlsgd!3 + ldq $16, f($29) !tlsldm!4 + + ldq $16, g($29) !gotdtprel + ldah $16, h($31) !dtprelhi + lda $16, i($16) !dtprello + lda $16, j($31) !dtprel + + ldq $16, k($29) !gottprel + ldah $16, l($31) !tprelhi + lda $16, m($16) !tprello + lda $16, n($31) !tprel +EOF +dnl +if AC_TRY_COMMAND(${CC-cc} -c $CFLAGS conftest.s 1>&AS_MESSAGE_LOG_FD); then + libc_cv_alpha_tls=yes +else + libc_cv_alpha_tls=no +fi +rm -f conftest*]) +if test $libc_cv_alpha_tls = no; then + AC_MSG_ERROR([the assembler must support TLS]) +fi + +AC_CACHE_CHECK(for GP relative module local relocs, libc_cv_alpha_hidden_gprel, [dnl +cat > conftest.c <<\EOF +static volatile int bar; +int baz __attribute__((visibility("hidden"))); +int f(void) { return bar + baz; } +EOF +dnl + +libc_cv_alpha_hidden_gprel=no +if AC_TRY_COMMAND(${CC-cc} -S $CFLAGS -O2 -fpic conftest.c 1>&AS_MESSAGE_LOG_FD); then + if grep -q 'bar.*!gprel' conftest.s \ + && grep -q 'baz.*!gprel' conftest.s \ + && ! grep -q 'bar.*!literal' conftest.s \ + && ! grep -q 'baz.*!literal' conftest.s; then + libc_cv_alpha_hidden_gprel=yes + fi +fi +rm -f conftest*]) +if test $libc_cv_alpha_hidden_gprel = yes; then + AC_DEFINE(PI_STATIC_AND_HIDDEN) +fi |