tar: make it build with nvhpc (#22853)

Co-authored-by: Scott McMillan <smcmillan@nvidia.com>

var/spack/repos/builtin/packages/tar/nvhpc-1.34.patch

@@ -0,0 +1,35 @@
+--- a/gnu/xalloc-oversized.h
++++ b/gnu/xalloc-oversized.h
+@@ -41,10 +41,10 @@
+    positive and N must be nonnegative.  This is a macro, not a
+    function, so that it works correctly even when SIZE_MAX < N.  */
+ 
+-#if 7 <= __GNUC__ && !defined __clang__
++#if 7 <= __GNUC__ && !defined __clang__ && !defined __NVCOMPILER
+ # define xalloc_oversized(n, s) \
+    __builtin_mul_overflow_p (n, s, (__xalloc_count_type) 1)
+-#elif 5 <= __GNUC__ && !defined __ICC && !__STRICT_ANSI__
++#elif 5 <= __GNUC__ && !defined __ICC && !__STRICT_ANSI__ && !defined __NVCOMPILER
+ # define xalloc_oversized(n, s) \
+    (__builtin_constant_p (n) && __builtin_constant_p (s) \
+     ? __xalloc_oversized (n, s) \
+--- a/gnu/intprops.h
++++ b/gnu/intprops.h
+@@ -228,7 +228,7 @@
+    (A, B, P) work when P is non-null.  */
+ /* __builtin_{add,sub}_overflow exists but is not reliable in GCC 5.x and 6.x,
+    see <https://gcc.gnu.org/bugzilla/show_bug.cgi?id=98269>.  */
+-#if 7 <= __GNUC__ && !defined __ICC
++#if 7 <= __GNUC__ && !defined __ICC && !defined __NVCOMPILER
+ # define _GL_HAS_BUILTIN_ADD_OVERFLOW 1
+ #elif defined __has_builtin
+ # define _GL_HAS_BUILTIN_ADD_OVERFLOW __has_builtin (__builtin_add_overflow)
+@@ -246,7 +246,7 @@
+ 
+ /* True if __builtin_add_overflow_p (A, B, C) works, and similarly for
+    __builtin_sub_overflow_p and __builtin_mul_overflow_p.  */
+-#if defined __clang__ || defined __ICC
++#if defined __clang__ || defined __ICC || defined __NVCOMPILER
+ /* Clang 11 lacks __builtin_mul_overflow_p, and even if it did it
+    would presumably run afoul of Clang bug 16404.  ICC 2021.1's
+    __builtin_add_overflow_p etc. are not treated as integral constant

var/spack/repos/builtin/packages/tar/nvhpc-long-width.patch

@@ -0,0 +1,17 @@
+--- a/gnu/regex_internal.h	2020-08-21 09:14:20.039942370 -0700
++++ b/gnu/regex_internal.h	2020-08-21 10:06:57.840331452 -0700
+@@ -35,6 +35,14 @@
+ #include <intprops.h>
+ #include <verify.h>
+ 
++#ifndef __LONG_WIDTH__
++#if LONG_WIDTH
++#define __LONG_WIDTH__ LONG_WIDTH
++#else
++#define __LONG_WIDTH__ __WORDSIZE
++#endif
++#endif
++
+ #if defined DEBUG && DEBUG != 0
+ # include <assert.h>
+ # define DEBUG_ASSERT(x) assert (x)

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

@@ -31,7 +31,12 @@ class Tar(AutotoolsPackage, GNUMirrorPackage):
     patch('se-selinux.patch', when='@:1.29')
     patch('argp-pgi.patch',   when='@:1.29')
     patch('gnutar-configure-xattrs.patch', when='@1.28')
-    patch('nvhpc.patch',      when='%nvhpc')
+    # The NVIDIA compilers do not currently support some GNU builtins.
+    # Detect this case and use the fallback path.
+    patch('nvhpc-1.30.patch', when='@1.30:1.32 %nvhpc')
+    patch('nvhpc-1.34.patch', when='@1.34 %nvhpc')
+    # Workaround bug where __LONG_WIDTH__ is not defined
+    patch('nvhpc-long-width.patch', when='@1.34 %nvhpc')
 
     @classmethod
     def determine_version(cls, exe):