diff --git a/config.sh b/config.sh
new file mode 100644
index 0000000..e56721c
--- /dev/null
+++ b/config.sh
@@ -0,0 +1,5 @@
+PACKAGE="c99"
+VERSION="0.0.0"
+
+PREFIX="/usr/local"
+LIBDIR="${PREFIX}/lib"
diff --git a/doc/GRAMMAR b/doc/GRAMMAR
new file mode 100644
index 0000000..456be52
--- /dev/null
+++ b/doc/GRAMMAR
@@ -0,0 +1,58 @@
+token:		keyword | identifier | constant | string-litteral | punctuator
+
+keyword:	"auto" | "break" | "case" | "char" | "const" | "continue"
+		| "default" | "do" | "double" | "else" | "enum" | "extern"
+		| "float" | "for" | "goto" | "if" | "inline" | "int" | "long"
+		| "register" | "restrict" | "return" | "short" | "signed"
+		| "sizeof" | "static" | "struct" | "switch" | "typedef"
+		| "union" | "unsigned" | "void" | "volatile" | "while"
+		| "_Bool" | "_Complex" | "_Imaginary"
+
+punctuator:	"[" | "]" | "(" | ")" | "{" | "}" | "." | "->" | "++" | "--"
+		| "&" | "*" | "+" | "-" | "~" | "!" | "/" | "%" | "<<" | ">>"
+		| "<" | ">" | "<=" | ">=" | "==" | "!=" | "^" | "|" | "&&"
+		| "||" | "?" | ":" | ";" | "..." | "=" | "*=" | "/=" | "%="
+		| "+=" | "-=" | "<<=" | ">>=" | "&=" | "^=" | "|=" | "," | "#"
+		| "##" | "<:" | ":>" | "<%" | "%>" | "%:" | "%:%:"
+
+type-specifier:		"void" | "char" | "short" | "int" | "long" | "float"
+			| "double" | "signed" | "unsigned" | "_Bool"
+			| "_Complex" | "_Imaginary" | struct-or-union-specifier
+			| enum-specifier | typedef-name
+
+function-specifier:	"inline"
+
+function-specifier:	"inline"
+
+type-qualifier:	"const" | "restrict" | "volatile"
+
+pointer:	"*" type-qualifier-list-opt { "*" type-qualifier-list-opt }
+
+parameter-list:		parameter-declaration { "," parameter-declaration }
+
+parameter-declaration:	declaration-specifiers ( declarator
+		| abstract-declarator-opt )
+
+identifier-list:	identifier { "," identifier }
+
+compound-statement:	{ block-item-list-opt }
+
+block-item-list:	block-item { block-item }
+
+block-item:	declaration | statement
+
+function-definition:	declaration-specifiers declarator declaration-list-opt
+		compound-statement
+
+declaration-list:	declaration { declaration }
+
+digit:		"0" | "1" | "2" | "3" | "4" | "5" | "6" | "7" | "8" | "9"
+
+lparen:		"("
+		(rule 1)
+
+new-line:	"\n"
+
+==
+
+rule 1:		- there must not be preceding white spaces