See http://www.mailinglistarchive.com/help-libidn@gnu.org/msg00055.html


diff -up libidn-0.6.14/lib/Makefile.am.orig libidn-0.6.14/lib/Makefile.am
--- libidn-0.6.14/lib/Makefile.am.orig	2007-10-24 11:01:29.000000000 -0400
+++ libidn-0.6.14/lib/Makefile.am	2007-05-31 06:31:00.000000000 -0400
@@ -37,7 +37,7 @@ nodist_include_HEADERS = $(idn_int)
 
 idn-int.h:
 	if test -n "$(STDINT_H)"; then \
-		cp gl/stdint.h idn-int.h; \
+		sed -e s/include_next/include/ gl/stdint.h > idn-int.h; \
 	else \
 		echo '#include <stdint.h>' > idn-int.h; \
 	fi
diff -up libidn-0.6.14/lib/Makefile.in.orig libidn-0.6.14/lib/Makefile.in
--- libidn-0.6.14/lib/Makefile.in.orig	2007-10-24 11:01:38.000000000 -0400
+++ libidn-0.6.14/lib/Makefile.in	2007-05-31 06:54:12.000000000 -0400
@@ -743,7 +743,7 @@ uninstall-am: uninstall-includeHEADERS u
 
 idn-int.h:
 	if test -n "$(STDINT_H)"; then \
-		cp gl/stdint.h idn-int.h; \
+		sed -e s/include_next/include/ gl/stdint.h > idn-int.h; \
 	else \
 		echo '#include <stdint.h>' > idn-int.h; \
 	fi