nuser@nanoserver:~$ cat error 
mipsel-linux-uclibc-gcc -Wall 
-I/home/nuser/OpenWrt/kamikaze/trunk/build_mipsel/amwall-0.1.0 
-DLANG=\"en\" 
-I/home/nuser/OpenWrt/kamikaze/trunk/staging_dir_mipsel/usr/include 
-I/home/nuser/OpenWrt/kamikaze/trunk/staging_dir_mipsel/usr/include/compat 
-D_GNU_SOURCE=1     -c -o grammar_en.o grammar_en.y.c
In file included from grammar_en.y:33:
grammar.h:1: error: syntax error before '-' token
grammar.h:1: error: syntax error at '#' token
In file included from grammar_en.y:33:
grammar.h:4:2: #endif without #if
make[4]: *** [grammar_en.o] Error 1
make[4]: Leaving directory 
`/home/nuser/OpenWrt/kamikaze/trunk/build_mipsel/amwall-0.1.0'
make[3]: *** 
[/home/nuser/OpenWrt/kamikaze/trunk/build_mipsel/amwall-0.1.0/.built] 
Error 2

The patch to correct this problem is:

nuser@nanoserver:~$ cat amwall.patch 
--- Makefile.old        2007-03-06 11:43:32.000000000 +0100
+++ Makefile    2007-03-06 11:14:53.000000000 +0100
@@ -122,7 +122,7 @@
        $(RM) -f $(TARGET) $(OBJECTS) *.y.? grammar.h
 
 .y.o:
-       @echo -e \
+       @echo \
        "#ifndef _H_GRAMMAR\n#define _H_GRAMMAR\n#include \"$<.h\"\n#endif" \
                > grammar.h
        @echo -e "  YACC\t$<"