--- vim-7.4.1952/src/osdef2.h.in.orig	2016-06-21 23:42:20.000000000 +0200

+++ vim-7.4.1952/src/osdef2.h.in	2016-09-06 18:33:43.655518796 +0200

@@ -92,5 +92,5 @@

 extern int	_Xmblen(char const *, size_t);

 #else

 		/* This is different from the header but matches mblen() */

-extern int	_Xmblen(char *, size_t);

+extern int	_Xmblen(char *, int);

 #endif

--- vim-7.4.1952/src/Makefile.orig	2016-06-21 23:42:20.000000000 +0200

+++ vim-7.4.1952/src/Makefile	2016-09-07 06:29:14.483862359 +0200

@@ -2692,7 +2692,7 @@

 	    $(PERLLIB)/ExtUtils/typemap if_perl.xs >> $@

 auto/osdef.h: auto/config.h osdef.sh osdef1.h.in osdef2.h.in

-	CC="$(CC) $(OSDEF_CFLAGS)" srcdir=$(srcdir) sh $(srcdir)/osdef.sh

+	CC="$(CC) $(OSDEF_CFLAGS) -I$(PKG_PREFIX)/include" srcdir=$(srcdir) sh $(srcdir)/osdef.sh

 auto/pathdef.c: Makefile auto/config.mk

 	-@echo creating $@

--- vim-7.4.1952/src/auto/configure.orig	2016-06-21 23:42:20.000000000 +0200

+++ vim-7.4.1952/src/auto/configure	2016-09-16 16:37:28.147266000 +0200

@@ -2603,7 +2603,7 @@

 ## -------------------- ##

 ac_ext=c

-ac_cpp='$CPP $CPPFLAGS'

+ac_cpp='$CPP $CFLAGS $CPPFLAGS'

 ac_compile='$CC -c $CFLAGS $CPPFLAGS conftest.$ac_ext >&5'

 ac_link='$CC -o conftest$ac_exeext $CFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'

 ac_compiler_gnu=$ac_cv_c_compiler_gnu

@@ -7607,6 +7607,7 @@

 # Standard set of common directories for X headers.

 # Check X11 before X11Rn because it is often a symlink to the current release.

+if test -z "$ac_x_header_dirs"; then

 ac_x_header_dirs='

 /usr/X11/include

 /usr/X11R7/include

@@ -7645,6 +7646,7 @@

 /usr/openwin/include

 /usr/openwin/share/include'

+fi

 if test "$ac_x_includes" = no; then

   # Guess where to find include files, by looking for Xlib.h.