mirror of
https://sourceware.org/git/glibc.git
synced 2024-12-12 14:20:13 +00:00
47 lines
1.6 KiB
Plaintext
47 lines
1.6 KiB
Plaintext
GLIBC_PROVIDES dnl See aclocal.m4 in the top level source directory.
|
|
# Local configure fragment for sysdeps/arm.
|
|
|
|
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)
|
|
|
|
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
|
|
|
|
# We check to see if the compiler and flags are
|
|
# selecting the hard-float ABI and if they are then
|
|
# we set libc_cv_arm_pcs_vfp to yes which causes
|
|
# HAVE_ARM_PCS_VFP to be defined in config.h and
|
|
# in include/libc-symbols.h and thus available to
|
|
# shlib-versions to select the appropriate name for
|
|
# the dynamic linker via %ifdef.
|
|
AC_CACHE_CHECK([whether the compiler is using the ARM hard-float ABI],
|
|
[libc_cv_arm_pcs_vfp],
|
|
[AC_EGREP_CPP(yes,[#ifdef __ARM_PCS_VFP
|
|
yes
|
|
#endif
|
|
], libc_cv_arm_pcs_vfp=yes, libc_cv_arm_pcs_vfp=no)])
|
|
if test $libc_cv_arm_pcs_vfp = yes; then
|
|
AC_DEFINE(HAVE_ARM_PCS_VFP)
|
|
LIBC_CONFIG_VAR([default-abi], [hard])
|
|
else
|
|
LIBC_CONFIG_VAR([default-abi], [soft])
|
|
fi
|