--- configure	2024-06-12 16:35:18.736933604 +0200
+++ configure	2024-06-12 16:57:39.544214075 +0200
@@ -22533,7 +22362,83 @@
 fi

 if $have_icu; then
-	CXXFLAGS="$CXXFLAGS `$PKG_CONFIG --variable=CXXFLAGS icu-uc`"
+	is_icu75=false
+
+pkg_failed=no
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking for icu-uc >= 75.1" >&5
+printf %s "checking for icu-uc >= 75.1... " >&6; }
+
+if test -n "$ICU_CFLAGS"; then
+    pkg_cv_ICU_CFLAGS="$ICU_CFLAGS"
+ elif test -n "$PKG_CONFIG"; then
+    if test -n "$PKG_CONFIG" && \
+    { { printf "%s\n" "$as_me:${as_lineno-$LINENO}: \$PKG_CONFIG --exists --print-errors \"icu-uc >= 75.1\""; } >&5
+  ($PKG_CONFIG --exists --print-errors "icu-uc >= 75.1") 2>&5
+  ac_status=$?
+  printf "%s\n" "$as_me:${as_lineno-$LINENO}: \$? = $ac_status" >&5
+  test $ac_status = 0; }; then
+  pkg_cv_ICU_CFLAGS=`$PKG_CONFIG --cflags "icu-uc >= 75.1" 2>/dev/null`
+		      test "x$?" != "x0" && pkg_failed=yes
+else
+  pkg_failed=yes
+fi
+ else
+    pkg_failed=untried
+fi
+if test -n "$ICU_LIBS"; then
+    pkg_cv_ICU_LIBS="$ICU_LIBS"
+ elif test -n "$PKG_CONFIG"; then
+    if test -n "$PKG_CONFIG" && \
+    { { printf "%s\n" "$as_me:${as_lineno-$LINENO}: \$PKG_CONFIG --exists --print-errors \"icu-uc >= 75.1\""; } >&5
+  ($PKG_CONFIG --exists --print-errors "icu-uc >= 75.1") 2>&5
+  ac_status=$?
+  printf "%s\n" "$as_me:${as_lineno-$LINENO}: \$? = $ac_status" >&5
+  test $ac_status = 0; }; then
+  pkg_cv_ICU_LIBS=`$PKG_CONFIG --libs "icu-uc >= 75.1" 2>/dev/null`
+		      test "x$?" != "x0" && pkg_failed=yes
+else
+  pkg_failed=yes
+fi
+ else
+    pkg_failed=untried
+fi
+
+
+
+if test $pkg_failed = yes; then
+        { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: no" >&5
+printf "%s\n" "no" >&6; }
+
+if $PKG_CONFIG --atleast-pkgconfig-version 0.20; then
+        _pkg_short_errors_supported=yes
+else
+        _pkg_short_errors_supported=no
+fi
+        if test $_pkg_short_errors_supported = yes; then
+                ICU_PKG_ERRORS=`$PKG_CONFIG --short-errors --print-errors --cflags --libs "icu-uc >= 75.1" 2>&1`
+        else
+                ICU_PKG_ERRORS=`$PKG_CONFIG --print-errors --cflags --libs "icu-uc >= 75.1" 2>&1`
+        fi
+        # Put the nasty error message in config.log where it belongs
+        echo "$ICU_PKG_ERRORS" >&5
+
+        :
+elif test $pkg_failed = untried; then
+        { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: no" >&5
+printf "%s\n" "no" >&6; }
+        :
+else
+        ICU_CFLAGS=$pkg_cv_ICU_CFLAGS
+        ICU_LIBS=$pkg_cv_ICU_LIBS
+        { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: yes" >&5
+printf "%s\n" "yes" >&6; }
+        is_icu75=true
+fi
+	if $is_icu75; then
+		CXXFLAGS="$CXXFLAGS `$PKG_CONFIG --variable=CXXFLAGS -std=c++17 icu-uc`"
+	else
+		CXXFLAGS="$CXXFLAGS `$PKG_CONFIG --variable=CXXFLAGS icu-uc`"
+	fi

 printf "%s\n" "#define HAVE_ICU 1" >>confdefs.h