Made a minimum subset build - mbrtowc() is currently a hack to make it work...

git-svn-id: file:///srv/svn/repos/haiku/trunk/current@8967 a95241bf-73f2-0310-859d-f6bbb57e9c96

src/kernel/libroot/posix/glibc/wcsmbs/Jamfile

@@ -0,0 +1,18 @@
+SubDir OBOS_TOP src kernel libroot posix glibc wcsmbs ;
+
+SubDirHdrs $(OBOS_TOP) src kernel libroot posix glibc include arch $(OBOS_ARCH) ;
+SubDirHdrs $(OBOS_TOP) src kernel libroot posix glibc wcsmbs ;
+SubDirHdrs $(OBOS_TOP) src kernel libroot posix glibc include ;
+SubDirHdrs $(OBOS_TOP) src kernel libroot posix glibc iconv ;
+SubDirHdrs $(OBOS_TOP) src kernel libroot posix glibc locale ;
+SubDirHdrs $(OBOS_TOP) src kernel libroot posix glibc libio ;
+SubDirHdrs $(OBOS_TOP) src kernel libroot posix glibc ;
+
+# ToDo: for now, all wide character functions are disabled
+
+KernelMergeObject posix_gnu_wcsmbs.o :
+	mbrlen.c
+	mbrtowc.c
+	mbsinit.c
+	: -fPIC -DPIC
+	;

src/kernel/libroot/posix/glibc/wcsmbs/mbrtowc.c

@@ -21,7 +21,7 @@
 #include <errno.h>
 #include <gconv.h>
 #include <wchar.h>
-#include <wcsmbsload.h>
+//#include <wcsmbsload.h>
 
 #include <assert.h>
 
@@ -35,6 +35,19 @@ static mbstate_t state;
 size_t
 __mbrtowc (wchar_t *pwc, const char *s, size_t n, mbstate_t *ps)
 {
+	// ToDo: this is a dummy implementation to get it going
+	if (s == NULL)
+		n = 1, s = "";
+
+	if (pwc == NULL || n == 0)
+		return 0;
+
+	if (ps == NULL)
+		ps = &state;
+
+	pwc[0] = s[0];
+	return s[0] == 0 ? 0 : 1;
+#if 0
   wchar_t buf[1];
   struct __gconv_step_data data;
   int status;
@@ -104,6 +117,7 @@ __mbrtowc (wchar_t *pwc, const char *s, size_t n, mbstate_t *ps)
     }
 
   return result;
+#endif
 }
 libc_hidden_def (__mbrtowc)
 weak_alias (__mbrtowc, mbrtowc)

src/kernel/libroot/posix/glibc/wcsmbs/wchar.h

@@ -23,6 +23,8 @@
 
 #ifndef _WCHAR_H
 
+#include <iconv/gconv.h>
+
 #ifndef __need_mbstate_t
 # define _WCHAR_H 1
 # include <features.h>