2010-03-26 18:12:56 +00:00
|
|
|
GLIBC_PROVIDES dnl See aclocal.m4 in the top level source directory.
|
|
|
|
|
# Local configure fragment for sysdeps/arm.
|
|
|
|
|
|
2012-03-27 21:04:59 +00:00
|
|
|
# Check for support of thread-local storage handling in assembler and
|
|
|
|
|
# linker.
|
|
|
|
|
AC_CACHE_CHECK(for ARM TLS support, libc_cv_arm_tls, [dnl
|
|
|
|
|
cat > conftest.s <<\EOF
|
|
|
|
|
.section ".tdata", "awT", %progbits
|
|
|
|
|
.globl foo
|
|
|
|
|
foo: .long 1
|
|
|
|
|
.section ".tbss", "awT", %nobits
|
|
|
|
|
.globl bar
|
|
|
|
|
bar: .skip 4
|
|
|
|
|
.text
|
|
|
|
|
.word foo(tpoff)
|
|
|
|
|
.word foo(tlsgd)
|
|
|
|
|
EOF
|
|
|
|
|
dnl
|
|
|
|
|
if AC_TRY_COMMAND(${CC-cc} -c $CFLAGS conftest.s 1>&AS_MESSAGE_LOG_FD); then
|
|
|
|
|
libc_cv_arm_tls=yes
|
|
|
|
|
else
|
|
|
|
|
libc_cv_arm_tls=no
|
|
|
|
|
fi
|
|
|
|
|
rm -f conftest*])
|
|
|
|
|
if test $libc_cv_arm_tls = no; then
|
|
|
|
|
AC_MSG_ERROR([the assembler must support TLS])
|
|
|
|
|
fi
|
|
|
|
|
|
|
|
|
|
dnl It is always possible to access static and hidden symbols in an
|
|
|
|
|
dnl position independent way.
|
|
|
|
|
dnl NOTE: This feature was added by the GCC TLS patches. We should test for
|
|
|
|
|
dnl it. Until we do, don't define it.
|
|
|
|
|
#AC_DEFINE(PI_STATIC_AND_HIDDEN)
|
|
|
|
|
|
2010-03-26 18:12:56 +00:00
|
|
|
AC_CACHE_CHECK([whether the CFI directive .cfi_sections is supported],
|
|
|
|
|
[libc_cv_asm_cfi_directive_sections],
|
|
|
|
|
[cat > conftest.s <<EOF
|
|
|
|
|
.text
|
|
|
|
|
.cfi_sections .debug_frame, .eh_frame
|
|
|
|
|
.cfi_startproc
|
|
|
|
|
.cfi_endproc
|
|
|
|
|
EOF
|
|
|
|
|
if AC_TRY_COMMAND(${CC-cc} $ASFLAGS -c conftest.s 1>&AS_MESSAGE_LOG_FD); then
|
|
|
|
|
libc_cv_asm_cfi_directive_sections=yes
|
|
|
|
|
else
|
|
|
|
|
libc_cv_asm_cfi_directive_sections=no
|
|
|
|
|
fi
|
|
|
|
|
rm -f conftest*])
|
|
|
|
|
if test $libc_cv_asm_cfi_directive_sections != yes; then
|
|
|
|
|
AC_MSG_ERROR([need .cfi_sections in this configuration])
|
|
|
|
|
fi
|
