package/php: fix aarch64 uclibc-ng compile

The aarch64 compile uses the sys/auxv.h header which is not
provided by ulcibc-ng. Add configure.ac patch to check for
the header before using it in ext/standard/crc32.c.

Fixes:

  https://bugs.busybox.net/show_bug.cgi?id=12626

  build/php-7.4.3/ext/standard/crc32.c:26:12: schwerwiegender Fehler: sys/auxv.h: Datei oder Verzeichnis nicht gefunden

Signed-off-by: Peter Seiderer <ps.report@gmx.net>
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@bootlin.com>

package/php/0005-Check-for-sys-auxv.h-before-using-it.patch

@@ -0,0 +1,60 @@
+From f150702d5ab72878d45b722b6d7d4194db92c44a Mon Sep 17 00:00:00 2001
+From: Peter Seiderer <ps.report@gmx.net>
+Date: Mon, 9 Mar 2020 15:36:48 +0100
+Subject: [PATCH] Check for sys/auxv.h before using it.
+
+Fixes aarch64 compile wiht uclibc-ng (does not provide
+sys/auxv.h header file).
+
+Signed-off-by: Peter Seiderer <ps.report@gmx.net>
+Upstream: https://github.com/php/php-src/commit/f73528f0e0d59ac744ccb4a94a3a9d7b9f0fba1b
+---
+ configure.ac         | 1 +
+ ext/standard/crc32.c | 9 +++++++--
+ 2 files changed, 8 insertions(+), 2 deletions(-)
+
+diff --git a/configure.ac b/configure.ac
+index 5219a5f2..caf62302 100644
+--- a/configure.ac
++++ b/configure.ac
+@@ -440,6 +440,7 @@ resolv.h \
+ strings.h \
+ syslog.h \
+ sysexits.h \
++sys/auxv.h \
+ sys/ioctl.h \
+ sys/file.h \
+ sys/mman.h \
+diff --git a/ext/standard/crc32.c b/ext/standard/crc32.c
+index c3ca5903..e59ab45f 100644
+--- a/ext/standard/crc32.c
++++ b/ext/standard/crc32.c
+@@ -17,10 +17,15 @@
+ */
+ 
+ #include "php.h"
++#ifdef PHP_WIN32
++#include "config.w32.h"
++#else
++#include <php_config.h>
++#endif
+ #include "basic_functions.h"
+ #include "crc32.h"
+ 
+-#if defined(__aarch64__)
++#if defined(__aarch64__) && defined(HAVE_SYS_AUXV_H)
+ # include <arm_acle.h>
+ # if defined(__linux__)
+ #  include <sys/auxv.h>
+@@ -85,7 +90,7 @@ PHP_NAMED_FUNCTION(php_if_crc32)
+ 
+ 	crc = crcinit^0xFFFFFFFF;
+ 
+-#if defined(__aarch64__)
++#if defined(__aarch64__) && defined(HAVE_SYS_AUXV_H)
+ 	if (has_crc32_insn()) {
+ 		crc = crc32_aarch64(crc, p, nr);
+ 		RETURN_LONG(crc^0xFFFFFFFF);
+-- 
+2.25.1
+