diff --git a/icu4c/source/config/mh-aix b/icu4c/source/config/mh-aix
index 215c4e87fc4..8d73e3d841d 100644
--- a/icu4c/source/config/mh-aix
+++ b/icu4c/source/config/mh-aix
@@ -34,6 +34,7 @@ LIBICU-UC= 	-L$(top_builddir)/common -licu-uc
 LIBICU-I18N= 	-L$(top_builddir)/i18n -licu-i18n
 LIBCTESTFW= 	-L$(top_builddir)/tools/ctestfw -lctestfw
 LIBICU-TOOLUTIL=-L$(top_builddir)/tools/toolutil -licu-toolutil
+LIBUSTDIO=      -L$(top_builddir)/extra/ustdio -lustdio
 
 ## Special AIX rules
 
diff --git a/icu4c/source/config/mh-freebsd b/icu4c/source/config/mh-freebsd
index 39b67329add..87c16022bed 100644
--- a/icu4c/source/config/mh-freebsd
+++ b/icu4c/source/config/mh-freebsd
@@ -31,6 +31,7 @@ LIBICU-UC= 	-L$(top_builddir)/common -licu-uc
 LIBICU-I18N= 	-L$(top_builddir)/i18n -licu-i18n
 LIBCTESTFW= 	-L$(top_builddir)/tools/ctestfw -lctestfw
 LIBICU-TOOLUTIL=-L$(top_builddir)/tools/toolutil -licu-toolutil
+LIBUSTDIO=      -L$(top_builddir)/extra/ustdio -lustdio
 
 ## Compilation rules
 %.o : $(srcdir)/%.c
diff --git a/icu4c/source/config/mh-hpux-acc b/icu4c/source/config/mh-hpux-acc
index 50ee2707a60..c7d7ea31710 100644
--- a/icu4c/source/config/mh-hpux-acc
+++ b/icu4c/source/config/mh-hpux-acc
@@ -34,6 +34,7 @@ LIBICU-UC= 	-L$(top_builddir)/common -licu-uc
 LIBICU-I18N= 	-L$(top_builddir)/i18n -licu-i18n
 LIBCTESTFW= 	-L$(top_builddir)/tools/ctestfw -lctestfw
 LIBICU-TOOLUTIL=-L$(top_builddir)/tools/toolutil -licu-toolutil
+LIBUSTDIO=      -L$(top_builddir)/extra/ustdio -lustdio
 
 ## Compilation rules
 %.o : $(srcdir)/%.c
diff --git a/icu4c/source/config/mh-hpux-cc b/icu4c/source/config/mh-hpux-cc
index fbd2a5133f7..6d47322b3e2 100644
--- a/icu4c/source/config/mh-hpux-cc
+++ b/icu4c/source/config/mh-hpux-cc
@@ -41,6 +41,7 @@ LIBICU-UC= 	-L$(top_builddir)/common -licu-uc
 LIBICU-I18N= 	-L$(top_builddir)/i18n -licu-i18n
 LIBCTESTFW= 	-L$(top_builddir)/tools/ctestfw -lctestfw
 LIBICU-TOOLUTIL=-L$(top_builddir)/tools/toolutil -licu-toolutil
+LIBUSTDIO=      -L$(top_builddir)/extra/ustdio -lustdio
 
 ## Compilation rules
 %.o : $(srcdir)/%.c
diff --git a/icu4c/source/config/mh-irix b/icu4c/source/config/mh-irix
index b6d43cba61e..a2cc2775963 100644
--- a/icu4c/source/config/mh-irix
+++ b/icu4c/source/config/mh-irix
@@ -41,6 +41,7 @@ LIBICU-UC= 	-L$(top_builddir)/common -licu-uc
 LIBICU-I18N= 	-L$(top_builddir)/i18n -licu-i18n
 LIBCTESTFW= 	-L$(top_builddir)/tools/ctestfw -lctestfw
 LIBICU-TOOLUTIL=-L$(top_builddir)/tools/toolutil -licu-toolutil
+LIBUSTDIO=      -L$(top_builddir)/extra/ustdio -lustdio
 
 ## Compilation rules
 %.o : $(srcdir)/%.c
diff --git a/icu4c/source/config/mh-linux b/icu4c/source/config/mh-linux
index 8341a726caf..db086a15227 100644
--- a/icu4c/source/config/mh-linux
+++ b/icu4c/source/config/mh-linux
@@ -31,6 +31,7 @@ LIBICU-UC= 	-L$(top_builddir)/common -licu-uc
 LIBICU-I18N= 	-L$(top_builddir)/i18n -licu-i18n
 LIBCTESTFW= 	-L$(top_builddir)/tools/ctestfw -lctestfw
 LIBICU-TOOLUTIL=-L$(top_builddir)/tools/toolutil -licu-toolutil
+LIBUSTDIO=      -L$(top_builddir)/extra/ustdio -lustdio
 
 ## Compilation rules
 %.o : $(srcdir)/%.c
diff --git a/icu4c/source/config/mh-os390 b/icu4c/source/config/mh-os390
index 47c32d6a2c5..30fdd86b298 100644
--- a/icu4c/source/config/mh-os390
+++ b/icu4c/source/config/mh-os390
@@ -63,6 +63,7 @@ LIBICU-UC= 	$(top_builddir)/common/libicu-uc.x
 LIBICU-I18N= 	$(top_builddir)/i18n/libicu-i18n.x
 LIBCTESTFW= 	$(top_builddir)/tools/ctestfw/libctestfw.x
 LIBICU-TOOLUTIL=$(top_builddir)/tools/toolutil/libicu-toolutil.x
+LIBUSTDIO=      $(top_builddir)/extra/ustdio/libustdio.x
 
 ## Special 390 rules
 
diff --git a/icu4c/source/config/mh-os400 b/icu4c/source/config/mh-os400
index 58018269eaa..0475b244346 100644
--- a/icu4c/source/config/mh-os400
+++ b/icu4c/source/config/mh-os400
@@ -44,6 +44,8 @@ LIBICU-UC = $(top_srcdir)/common/libicuuc.o
 LIBICU-I18N = $(top_srcdir)/i18n/libicui18n.o
 LIBCTESTFW = $(top_srcdir)/tools/ctestfw/libctestfw.o
 LIBICU-TOOLUTIL = $(top_srcdir)/tools/toolutil/libicutoolutil.o
+LIBUSTDIO=      $(top_builddir)/extra/ustdio/libustdio.o
+
 ## Special OS400 rules
 
 ## Build archive from shared object
diff --git a/icu4c/source/config/mh-solaris b/icu4c/source/config/mh-solaris
index 5100aa0578f..a0e8455de34 100644
--- a/icu4c/source/config/mh-solaris
+++ b/icu4c/source/config/mh-solaris
@@ -33,6 +33,7 @@ LIBICU-UC= 	-L$(top_builddir)/common -licu-uc
 LIBICU-I18N= 	-L$(top_builddir)/i18n -licu-i18n
 LIBCTESTFW= 	-L$(top_builddir)/tools/ctestfw -lctestfw
 LIBICU-TOOLUTIL=-L$(top_builddir)/tools/toolutil -licu-toolutil
+LIBUSTDIO=      -L$(top_builddir)/extra/ustdio -lustdio
 
 ## Compilation rules
 %.o : $(srcdir)/%.c
diff --git a/icu4c/source/config/mh-solaris-gcc b/icu4c/source/config/mh-solaris-gcc
index adb95295a3c..49f74705249 100644
--- a/icu4c/source/config/mh-solaris-gcc
+++ b/icu4c/source/config/mh-solaris-gcc
@@ -31,6 +31,7 @@ LIBICU-UC= 	-L$(top_builddir)/common -licu-uc
 LIBICU-I18N= 	-L$(top_builddir)/i18n -licu-i18n
 LIBCTESTFW= 	-L$(top_builddir)/tools/ctestfw -lctestfw
 LIBICU-TOOLUTIL=-L$(top_builddir)/tools/toolutil -licu-toolutil
+LIBUSTDIO=      -L$(top_builddir)/extra/ustdio -lustdio
 
 ## Compilation rules
 %.o : $(srcdir)/%.c