[glibc] powerpc: Remove duplicate strchrnul and strncasecmp_l libc.a (BZ 31786)

[Adhemerval Zanella <azanella@sourceware.org>]

https://sourceware.org/git/gitweb.cgi?p=glibc.git;h=5fededd8251b9f5ccd7f893123417205447b95f1

commit 5fededd8251b9f5ccd7f893123417205447b95f1
Author: Adhemerval Zanella <adhemerval.zanella@linaro.org>
Date:   Wed May 22 11:32:04 2024 -0300

    powerpc: Remove duplicate strchrnul and strncasecmp_l libc.a (BZ 31786)
    
    For powerpc64 the generic version provides a weak definition of
    strchrnul, which are already provided by the ifunc resolver.  The
    powerpc32 version is slight different, where for static case there
    is no iFUNC support.
    
    The strncasecmp_l is provided ifunc resolver.
    
    Checked on powerpc-linux-gnu-power4 and powerpc64-linux-gnu.
    Reviewed-by: H.J. Lu <hjl.tools@gmail.com>

Diff:
---
 sysdeps/powerpc/powerpc64/multiarch/strchrnul-power7.S  |  3 +++
 sysdeps/powerpc/powerpc64/multiarch/strchrnul-ppc64.c   | 14 +++++++++++++-
 sysdeps/powerpc/powerpc64/multiarch/strncase_l-power7.c |  3 +++
 3 files changed, 19 insertions(+), 1 deletion(-)

diff --git a/sysdeps/powerpc/powerpc64/multiarch/strchrnul-power7.S b/sysdeps/powerpc/powerpc64/multiarch/strchrnul-power7.S
index 384edce8b9..fc784c2856 100644
--- a/sysdeps/powerpc/powerpc64/multiarch/strchrnul-power7.S
+++ b/sysdeps/powerpc/powerpc64/multiarch/strchrnul-power7.S
@@ -18,6 +18,9 @@
 
 #define STRCHRNUL __strchrnul_power7
 
+#undef weak_alias
+#define weak_alias(a,b)
+
 #undef libc_hidden_builtin_def
 #define libc_hidden_builtin_def(name)
 
diff --git a/sysdeps/powerpc/powerpc64/multiarch/strchrnul-ppc64.c b/sysdeps/powerpc/powerpc64/multiarch/strchrnul-ppc64.c
index 8e42504efe..7127972250 100644
--- a/sysdeps/powerpc/powerpc64/multiarch/strchrnul-ppc64.c
+++ b/sysdeps/powerpc/powerpc64/multiarch/strchrnul-ppc64.c
@@ -16,4 +16,16 @@
    License along with the GNU C Library; if not, see
    <https://www.gnu.org/licenses/>.  */
 
-#include <sysdeps/powerpc/powerpc32/power4/multiarch/strchrnul-ppc32.c>
+#include <string.h>
+
+#if IS_IN (libc)
+# define STRCHRNUL  __strchrnul_ppc
+extern __typeof (strchrnul) __strchrnul_ppc attribute_hidden;
+
+# include <string/strchrnul.c>
+# undef __strchrnul
+weak_alias (__strchrnul_ppc, __strchrnul)
+# ifdef SHARED
+__hidden_ver1 (__strchrnul_ppc, __GI___strchrnul, __strchrnul_ppc);
+# endif
+#endif
diff --git a/sysdeps/powerpc/powerpc64/multiarch/strncase_l-power7.c b/sysdeps/powerpc/powerpc64/multiarch/strncase_l-power7.c
index 1587079580..664ce44345 100644
--- a/sysdeps/powerpc/powerpc64/multiarch/strncase_l-power7.c
+++ b/sysdeps/powerpc/powerpc64/multiarch/strncase_l-power7.c
@@ -19,6 +19,9 @@
 
 #define __strncasecmp_l __strncasecmp_l_power7
 
+#undef weak_alias
+#define weak_alias(a,b)
+
 #undef libc_hidden_def
 #define libc_hidden_def(name)