wtdbg2: enable build for aarch64 (#21390)

Use sse2neon to maintain the same API calls for aarch64

var/spack/repos/builtin/packages/wtdbg2/for_aarch64.patch

@@ -0,0 +1,23 @@
+--- spack-src/ksw.c.bak	2019-01-21 10:35:00.000000000 +0900
++++ spack-src/ksw.c	2021-01-29 16:24:06.281952856 +0900
+@@ -25,7 +25,7 @@
+ 
+ #include <stdlib.h>
+ #include <stdint.h>
+-#include <emmintrin.h>
++#include <sse2neon.h>
+ #include "ksw.h"
+ 
+ #ifdef USE_MALLOC_WRAPPERS
+--- spack-src/poacns.h.bak	2019-01-21 10:35:00.000000000 +0900
++++ spack-src/poacns.h	2021-01-29 16:23:27.631956791 +0900
+@@ -25,8 +25,7 @@
+ #include "chararray.h"
+ #include "list.h"
+ #include "hashset.h"
+-#include <emmintrin.h>
+-#include <tmmintrin.h>
++#include <sse2neon.h>
+ 
+ #if __BYTE_ORDER == 1234
+ //#pragma message(" ** " __FILE__ " has been tested in LITTLE_ENDIAN **\n")

var/spack/repos/builtin/packages/wtdbg2/package.py

@@ -15,6 +15,14 @@ class Wtdbg2(MakefilePackage):
     version('2.3', sha256='fb61d38a4c60a39b3b194e63b855141c05ddcbe71cf244ae613766a9b0a56621')
 
     depends_on('zlib')
+    depends_on('sse2neon', when='target=aarch64:')
+
+    patch('for_aarch64.patch', when='target=aarch64:')
+
+    def edit(self, spec, prefix):
+        if spec.target.family == 'aarch64':
+            makefile = FileFilter('Makefile')
+            makefile.filter('-mpopcnt -msse4.2', '')
 
     def install(self, spec, prefix):
         make('install', 'BIN=%s' % prefix.bin)