diff options
Diffstat (limited to 'gcc/config/linux.h')
| -rw-r--r-- | gcc/config/linux.h | 28 |
1 files changed, 26 insertions, 2 deletions
diff --git a/gcc/config/linux.h b/gcc/config/linux.h index 507471b..d7ca300 100644 --- a/gcc/config/linux.h +++ b/gcc/config/linux.h @@ -99,7 +99,31 @@ see the files COPYING3 and COPYING.RUNTIME respectively. If not, see #undef TARGET_HAS_BIONIC #define TARGET_HAS_BIONIC (OPTION_BIONIC) +#if (DEFAULT_LIBC == LIBC_UCLIBC) && defined (SINGLE_LIBC) /* uClinux */ +/* This is a *uclinux* target. We don't define below macros to normal linux + versions, because doing so would require *uclinux* targets to include + linux.c, linux-protos.h, linux.opt, etc. We could, alternatively, add + these files to *uclinux* targets, but that would only pollute option list + (add -mglibc, etc.) without adding any useful support. */ + +/* Define TARGET_LIBC_HAS_FUNCTION for *uclinux* targets to + no_c99_libc_has_function, because uclibc does not, normally, have + c99 runtime. If, in special cases, uclibc does have c99 runtime, + this should be defined to a new hook. Also please note that for targets + like *-linux-uclibc that similar check will also need to be added to + linux_libc_has_function. */ +# undef TARGET_LIBC_HAS_FUNCTION +# define TARGET_LIBC_HAS_FUNCTION no_c99_libc_has_function + +#else /* !uClinux, i.e., normal Linux */ + +/* IFUNCs are supportted by glibc, but not by uClibc or Bionic. */ +# undef TARGET_HAS_IFUNC_P +# define TARGET_HAS_IFUNC_P linux_has_ifunc_p + /* Determine what functions are present at the runtime; this includes full c99 runtime and sincos. */ -#undef TARGET_LIBC_HAS_FUNCTION -#define TARGET_LIBC_HAS_FUNCTION linux_libc_has_function +# undef TARGET_LIBC_HAS_FUNCTION +# define TARGET_LIBC_HAS_FUNCTION linux_libc_has_function + +#endif |