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#define _XOPEN_SOURCE 700
#include <errno.h>
#include <libgen.h>
#include <limits.h>
#include <string.h>
#include <stdio.h>
#include <stdlib.h>
#include <stdarg.h>
#include <unistd.h>
#include "cc.h"
#include "libs.h"
#include "cpp.h"
#include "link.h"
#include "version.h"
void error(const char *file, uintmax_t line, const char *fmt, ...)
{
if (file) {
fprintf(stderr, "%s:%ju: ", file, line);
} else if (line == 0) {
fprintf(stderr, "<BUILTIN>: ");
} else {
fprintf(stderr, "<COMMAND LINE>: ");
}
va_list ap;
va_start(ap, fmt);
vfprintf(stderr, fmt, ap);
va_end(ap);
exit(1);
}
static struct macro *do_predefs(const char *argv0)
{
long int version = LATEST;
char *fullname = strdup(argv0);
char *progname = basename(fullname);
struct macro *defs = define(NULL, NULL, 0, "__STDC__", "1");
if (!strcmp(progname, "c18")) {
version = C18;
} else if (!strcmp(progname, "c11")) {
/* warn */
version = C11;
} else if (!strcmp(progname, "c99")) {
version = C99;
} else if (!strcmp(progname, "c89")) {
version = C95;
}
if (version >= C95) {
char ppversion[8] = "";
sprintf(ppversion, "%ldL", version);
define(defs, NULL, 0, "__STDC_VERSION__", ppversion);
}
if (version >= C99) {
define(defs, NULL, 0, "__STDC_HOSTED__", "1");
define(defs, NULL, 0, "__STDC_IEC_559__", "1");
define(defs, NULL, 0, "__STDC_IEC_559_COMPLEX__", "1");
define(defs, NULL, 0, "__STDC_ISO_10646__", ISO_10646_VERSION);
}
if (version >= C11) {
define(defs, NULL, 0, "__STDC_UTF_16__", "1");
define(defs, NULL, 0, "__STDC_UTF_32__", "1");
define(defs, NULL, 0, "__STDC_ANALYZABLE__", "1");
define(defs, NULL, 0, "__STDC_LIB_EXT1__", "1");
/* __STDC_NO_ATOMICS__ */
/* __STDC_NO_COMPLEX__ */
/* __STDC_NO_THREADS__ */
/* __STDC_NO_VLA__ */
}
return defs;
}
static int getoptarg(char *argv[], int i, char **arg)
{
if (argv[i][2] != '\0') {
*arg = argv[i] + 2;
return 0;
}
*arg = argv[i + 1];
return 1;
}
int main(int argc, char *argv[])
{
enum { PREPROCESSED, ASSEMBLY, OBJECT, BINARY } output = BINARY;
char *output_path = "a.out";
char *inputs[argc];
int ninputs = 0;
struct macro *predef = do_predefs(argv[0]);
addlibdir("/lib/x86_64-linux-gnu", 0);
for (int i = 1; i < argc; i++) {
if (!strcmp(argv[i], "-c")) {
output = OBJECT;
} else if (!strcmp(argv[i], "-g")) {
/* include debugging symbols */
} else if (!strcmp(argv[i], "-s")) {
/* strip */
} else if (!strcmp(argv[i], "-E")) {
output = PREPROCESSED;
} else if (!strncmp(argv[i], "-o", 2)) {
i += getoptarg(argv, i, &output_path);
} else if (!strncmp(argv[i], "-D", 2)) {
char *macro = NULL;
i += getoptarg(argv, i, ¯o);
char *eq = strchr(macro, '=');
if (eq) {
*eq = '\0';
eq++;
}
define(predef, NULL, 1, macro, eq ? eq : "1");
} else if (!strncmp(argv[i], "-I", 2)) {
char *path = NULL;
i += getoptarg(argv, i, &path);
//include(path);
} else if (!strncmp(argv[i], "-L", 2)) {
/* TODO: add to inputs[] */
char *path = NULL;
i += getoptarg(argv, i, &path);
addlibdir(path, 1);
} else if (!strncmp(argv[i], "-O", 2)) {
/* optimize */
} else if (!strncmp(argv[i], "-U", 2)) {
char *macro = NULL;
i += getoptarg(argv, i, ¯o);
//undef(macro);
} else if (!strncmp(argv[i], "-l", 2)) {
/* TODO: add to inputs[] */
char *lib = NULL;
i += getoptarg(argv, i, &lib);
inputs[ninputs++] = findlib(lib);
} else if (argv[i][0] == '-') {
error(NULL, 1, "unknown options '%s'\n", argv[i]);
} else {
inputs[ninputs++] = argv[i];
}
}
for (int i = 0; i < ninputs; i++) {
if (!strcmp(inputs[i], "")) {
continue;
}
fprintf(stderr, "%s\n", inputs[i]);
//preprocess
//compile
//analyze
//optimize
//assemble
switch (output) {
case PREPROCESSED:
preprocess(inputs[i], output_path, predef);
break;
default:
break;
}
}
//optimize?
//link
//strip
}
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