ldso.h: factor out _dl_auxvt from ldso.h

The _dl_auxvt is also used on non shared builds to access the values of
the vector from getauxval. Putting the definitions in ldso.h leads to
issues because that header also implements fcntl.h functionality making
it incompatible with files that include that header directly.

Factor out the _dl_auxvt related declarations to a new header dl-auxvt.h
and include from ldso.h as well as include it directly from
__uClibc_main.c to make the definitions available.

Signed-off-by: Marcus Haehnel <marcus.haehnel@kernkonzept.com>

ldso/include/dl-auxvt.h

@@ -0,0 +1,9 @@
+#ifndef _DL_AUXVT_H
+#define _DL_AUXVT_H
+
+#define AUX_MAX_AT_ID 40
+extern ElfW(auxv_t) _dl_auxvt[AUX_MAX_AT_ID]; /* Cache frequently accessed auxiliary vector entries */
+extern ElfW(auxv_t) *_dl_auxv_start;          /* Start of the auxiliary vector */
+
+#endif /* _DL_AUXVT_H */
+

ldso/include/ldso.h

@@ -34,7 +34,6 @@
 #include <stdarg.h>
 #include <stddef.h> /* for ptrdiff_t */
 #include <stdbool.h>
-#if !defined(_FCNTL_H)
 #define _FCNTL_H
 /* We need this if arch has only new syscalls defined */
 #ifndef AT_FDCWD
@@ -191,11 +190,8 @@ extern void *_dl_get_ready_to_run(struct elf_resolve *tpnt, DL_LOADADDR_TYPE loa
 #include <dl-elf.h>
 
 #endif
-#endif /* _FCNTL_H */
 
-#define AUX_MAX_AT_ID 40
-extern ElfW(auxv_t) _dl_auxvt[AUX_MAX_AT_ID]; /* Cache frequently accessed auxiliary vector entries */
-extern ElfW(auxv_t) *_dl_auxv_start;          /* Start of the auxiliary vector */
+#include <dl-auxvt.h>
 
 void load_vdso(void *sys_info_ehdr, char **envp );
 

libc/misc/internals/__uClibc_main.c

@@ -84,7 +84,7 @@ static void fdpic_init_array_jump(void *addr)
 #ifndef SHARED
 void *__libc_stack_end = NULL;
 
-#include "ldso.h" /* Needed for _dl_auxvt */
+#include "dl-auxvt.h"
 
 # ifdef __UCLIBC_HAS_SSP__
 #  include <dl-osinfo.h>