From: Helmut Grohne <helmut@subdivi.de>
Subject: fix @HAVE_STDINT_H@ once stdint.h moves to /usr/include/<triplet>
https://sources.debian.org/patches/libunistring/0.9.10-1/0700-multiarch-libc.patch/
--- lib/Makefile.am.orig	2025-09-27 09:30:21.000000000 -0500
+++ lib/Makefile.am	2025-10-03 15:29:20.000000000 -0500
@@ -76,30 +76,15 @@
 	  echo '#if __GLIBC__ >= 2'; \
 	  echo '#include <stdint.h>'; \
 	  echo '#else'; \
-	  if test -f /usr/include/stdint.h; then \
-	    HAVE_STDINT_H='1'; \
-	  else \
-	    HAVE_STDINT_H='defined __MINGW32__ || defined __HAIKU__ || ((__GNUC__ > 4 || (__GNUC__ == 4 && __GNUC_MINOR__ >= 5)) && !defined __NetBSD__)'; \
-	  fi; \
-	  if test -f /usr/include/inttypes.h; then \
-	    HAVE_INTTYPES_H='1'; \
-	  else \
-	    HAVE_INTTYPES_H='defined __MINGW32__ || defined __HAIKU__'; \
-	  fi; \
-	  if test -f /usr/include/sys/inttypes.h; then \
-	    HAVE_SYS_INTTYPES_H='1'; \
-	  else \
-	    HAVE_SYS_INTTYPES_H='0'; \
-	  fi; \
 	  sed_escape_ampersands='s/&/\\&/g'; \
 	  HAVE_STDINT_H=`echo "$$HAVE_STDINT_H" | sed -e "$$sed_escape_ampersands"`; \
-	  sed -e 's/@''HAVE_STDINT_H''@/'"$$HAVE_STDINT_H"'/g' \
+	  sed -e 's/@''HAVE_STDINT_H''@/$(or @HAVE_STDINT_H@,0)/g' \
 	      -e 's|@''INCLUDE_NEXT''@|include|g' \
 	      -e 's|@''PRAGMA_SYSTEM_HEADER''@||g' \
 	      -e 's|@''NEXT_STDINT_H''@|<stdint.h>|g' \
 	      -e 's/@''HAVE_SYS_TYPES_H''@/1/g' \
-	      -e 's/@''HAVE_INTTYPES_H''@/'"$$HAVE_INTTYPES_H"'/g' \
-	      -e 's/@''HAVE_SYS_INTTYPES_H''@/'"$$HAVE_SYS_INTTYPES_H"'/g' \
+	      -e 's/@''HAVE_INTTYPES_H''@/$(or @HAVE_INTTYPES_H@,0)/g' \
+	      -e 's/@''HAVE_SYS_INTTYPES_H''@/$(or @HAVE_SYS_INTTYPES_H@,0)/g' \
 	      -e 's/@''HAVE_SYS_BITYPES_H''@/0/g' \
 	      < $(srcdir)/stdint.mini.h; \
 	  echo '#endif'; \
--- configure.ac.orig	2025-06-10 14:13:08.000000000 -0500
+++ configure.ac	2025-10-03 15:29:20.000000000 -0500
@@ -146,6 +146,8 @@
 HEXVERSION=0x`$AWK 'BEGIN { printf("%02X%02X%02X"',"$version_major","$version_minor","$version_subminor"') }'`
 AC_SUBST([HEXVERSION])
 
+AC_CHECK_HEADERS_ONCE(stdint.h inttypes.h sys/inttypes.h)
+
 dnl Check for tools needed for formatting the documentation.
 ac_aux_dir_abs=`cd $ac_aux_dir && pwd`
 AC_PATH_PROG([TEXI2DVI], [texi2dvi], [$ac_aux_dir_abs/missing texi2dvi])