add initial empty C, flex, and bison sources

src/main.c

@@ -0,0 +1,8 @@
+#include <stdio.h>
+
+int main(int argc, char * argv[])
+{
+    printf("coming soon...\n");
+
+    return 0;
+}

src/parser/parser.h

@@ -0,0 +1,4 @@
+#ifndef PARSER_H
+#define PARSER_H
+
+#endif

src/parser/parser.l

@@ -0,0 +1,15 @@
+%option nounput
+%option bison-locations
+
+%{
+
+#include "parser.h"
+#include "parser.tab.h"
+
+%}
+
+%x str
+
+%%
+
+%%

src/parser/parser.y

@@ -0,0 +1,38 @@
+%{
+
+#include <stdio.h>
+#include "parser.h"
+#include "parser.tab.h"
+
+#define yyerror(msg) handle_error(msg, &yyloc)
+
+int yylex(YYSTYPE *, YYLTYPE *);
+static void handle_error(const char * str, const YYLTYPE * yylloc);
+
+%}
+
+%pure-parser
+%locations
+%error-verbose
+
+%token PLUS;
+%token MINUS;
+
+%%
+
+translation_unit: PLUS;
+
+%%
+
+static void handle_error(const char * str, const YYLTYPE * yylloc)
+{
+    fprintf(stderr, "error: %s (line %d, column %d)\n",
+            str,
+            yylloc->first_line,
+            yylloc->first_column);
+}
+
+int yywrap(void)
+{
+    return 1;
+}

wscript

@@ -1,5 +1,22 @@
+import sys
+
+APP_NAME = "cxlc"
+
+def options(opt):
+    opt.load("compiler_c");
+
 def configure(conf):
-    pass
+    conf.load("compiler_c flex bison");
 
 def build(bld):
-    pass
+    sources = bld.path.ant_glob("src/**/*.c")
+    lexer_source = "src/parser/parser.l"
+    parser_source = "src/parser/parser.y"
+    sources += [lexer_source, parser_source]
+    includes = ["src", "src/parser"]
+    cflags = ["-Wall", "-O2"]
+    bld.program(
+            source = sources,
+            cflags = cflags,
+            target = APP_NAME,
+            includes = includes)