| 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 |
