sharutils: Check for intmax_t using configure

fixes
../../sharutils-4.15.2/lib/system.h:45:14: error: typedef redefinition with different types ('long' vs '__intmax_t' (aka 'long long'))
   45 | typedef long intmax_t;
      |              ^

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

meta-oe/recipes-support/sharutils/sharutils/0001-configure.ac-Check-and-define-intmax_t-type.patch

@@ -0,0 +1,32 @@
+From ea6f7a4c22f1b6f28cf426566cccd65eb9a0e9de Mon Sep 17 00:00:00 2001
+From: Khem Raj <raj.khem@gmail.com>
+Date: Sun, 10 Sep 2023 13:52:31 -0700
+Subject: [PATCH] configure.ac: Check and define intmax_t type
+
+If stdint.h or inttypes.h defines the type intmax_t, define HAVE_INTMAX_T.
+Otherwise, define intmax_t to the widest signed integer type.
+
+intmax_t is defined in lib/system.h if system is not providing it but it
+needs to be checked by configure for existence first.
+
+Upstream-Status: Submitted [https://savannah.gnu.org/bugs/index.php?64653]
+Signed-off-by: Khem Raj <raj.khem@gmail.com>
+---
+ configure.ac | 1 +
+ 1 file changed, 1 insertion(+)
+
+diff --git a/configure.ac b/configure.ac
+index 1242cb7..2ccaac9 100644
+--- a/configure.ac
++++ b/configure.ac
+@@ -72,6 +72,7 @@ AC_HEADER_STAT
+ AC_HEADER_STDC
+ AC_STRUCT_TIMEZONE
+ AC_TYPE_SIZE_T
++AC_TYPE_INTMAX_T
+ AC_CHECK_FUNCS([fchmod isascii strchr])
+ AC_FUNC_CLOSEDIR_VOID
+ AC_FUNC_FSEEKO
+-- 
+2.42.0
+

meta-oe/recipes-support/sharutils/sharutils_4.15.2.bb

@@ -12,6 +12,7 @@ SRC_URI = "${GNU_MIRROR}/${BPN}/${BP}.tar.gz \
            file://0001-Fix-build-with-recent-gettext.patch \
            file://0001-Fix-building-with-GCC-10.patch \
            file://0002-Do-not-include-lib-md5.c-into-src-shar.c.patch \
+           file://0001-configure.ac-Check-and-define-intmax_t-type.patch \
            "
 SRC_URI[md5sum] = "32a51b23e25ad5e6af4b89f228be1800"
 SRC_URI[sha256sum] = "ee336e68549664e7a19b117adf02edfdeac6307f22e5ba78baca457116914637"