glibc: Migrate eglibc 2.19 -> glibc 2.20

- This is a big swoop change where we switch to using glibc
- option-groups are forward ported
- cross-localedef is extracted out from eglibc and hosted
  at github.com/kraj/localedef, its used for cross-localedef
  recipe
- Other non ported patches from eglibc are forward ported
  ppc8xx cache line workaround
  SH fpcr values
  dynamic resolver
  installing PIC archives is there but is not applied
  libc header bootstrap

- Delete eglibc recipes we moved back to using glibc now
- Fix ppc/e500 build

- Fix crypt module build when options are used
- Fix fnmatch build when options OPTION_EGLIBC_LOCALE_CODE is unset
  HAVE_MBSTATE_T and HAVE_MBSRTOWCS should be defined conditionally
  based upon OPTION_EGLIBC_LOCALE_CODE being set/unset
- Move the ports/ patches to relevant files now that ports is gone

Signed-off-by: Khem Raj <raj.khem@gmail.com>

1 files changed, 56 insertions, 0 deletions

diff --git a/meta/recipes-core/glibc/glibc/ld-search-order.patch b/meta/recipes-core/glibc/glibc/ld-search-order.patch
new file mode 100644
index 0000000000..f518bc7642
--- /dev/null
+++ b/meta/recipes-core/glibc/glibc/ld-search-order.patch
@@ -0,0 +1,56 @@
+Upstream-Status: Inappropriate [embedded specific]
+
+The default lib search path order is:
+
+  1) LD_LIBRARY_PATH
+  2) RPATH from the binary
+  3) ld.so.cache
+  4) default search paths embedded in the linker
+
+For nativesdk binaries which are being used alongside binaries on a host system, we 
+need the search paths to firstly search the shipped nativesdk libs but then also
+cover the host system. For example we want the host system's libGL and this may be
+in a non-standard location like /usr/lib/mesa. The only place the location is know 
+about is in the ld.so.cache of the host system.
+
+Since nativesdk has a simple structure and doesn't need to use a cache itself, we 
+repurpose the cache for use as a last resort in finding host system binaries. This 
+means we need to switch the order of 3 and 4 above to make this work effectively.
+
+RP 14/10/2010
+
+Index: git/elf/dl-load.c
+===================================================================
+--- git.orig/elf/dl-load.c	2014-08-28 17:32:46.292070587 -0700
++++ git/elf/dl-load.c	2014-08-28 17:33:56.048070587 -0700
+@@ -2050,7 +2050,14 @@
+ 	fd = open_path (name, namelen, mode,
+ 			&loader->l_runpath_dirs, &realname, &fb, loader,
+ 			LA_SER_RUNPATH, &found_other_class);
+-
++      /* try the default path.  */
++      if (fd == -1
++	  && ((l = loader ?: GL(dl_ns)[nsid]._ns_loaded) == NULL
++	   || __builtin_expect (!(l->l_flags_1 & DF_1_NODEFLIB), 1))
++	 && rtld_search_dirs.dirs != (void *) -1)
++	fd = open_path (name, namelen, mode & __RTLD_SECURE, &rtld_search_dirs,
++			&realname, &fb, l, LA_SER_DEFAULT, &found_other_class);
++      /* Finally try ld.so.cache */
+ #ifdef USE_LDCONFIG
+       if (fd == -1
+ 	  && (__glibc_likely ((mode & __RTLD_SECURE) == 0)
+@@ -2113,14 +2120,6 @@
+ 	}
+ #endif
+ 
+-      /* Finally, try the default path.  */
+-      if (fd == -1
+-	  && ((l = loader ?: GL(dl_ns)[nsid]._ns_loaded) == NULL
+-	      || __glibc_likely (!(l->l_flags_1 & DF_1_NODEFLIB)))
+-	  && rtld_search_dirs.dirs != (void *) -1)
+-	fd = open_path (name, namelen, mode, &rtld_search_dirs,
+-			&realname, &fb, l, LA_SER_DEFAULT, &found_other_class);
+-
+       /* Add another newline when we are tracing the library loading.  */
+       if (__glibc_unlikely (GLRO_dl_debug_mask & DL_DEBUG_LIBS))
+ 	_dl_debug_printf ("\n");