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#include <errno.h>
#include <limits.h>
#include <stdbool.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <unistd.h>
#include "cbs.h"
#define CC "cc"
#ifdef __APPLE__
# define CFLAGS "-pipe", "-O3"
#else
# define CFLAGS "-pipe", "-O3", "-march=native", "-mtune=native"
#endif
#define DFLAGS "-DGRAB_DEBUG", "-g", "-ggdb3"
#define WFLAGS "-Wall", "-Wextra", "-Werror", "-Wpedantic"
#define PREFIX "/usr/local"
#define streq(a, b) (!strcmp(a, b))
#define cmdprc(c) \
do { \
int ec; \
cmdput(c); \
if ((ec = cmdexec(c)) != EXIT_SUCCESS) \
diex("%s terminated with exit-code %d", *c._argv, ec); \
cmdclr(&c); \
} while (0)
static size_t _strlcat(char *, const char *, size_t);
static char *_mkoutpath(const char **, size_t);
#define mkoutpath(...) \
_mkoutpath((const char **)_vtoa(__VA_ARGS__), lengthof(_vtoa(__VA_ARGS__)))
int
main(int argc, char **argv)
{
int opt;
bool debug;
cmd_t c = {0};
cbsinit(argc, argv);
rebuild();
while ((opt = getopt(argc, argv, "d")) != -1) {
switch (opt) {
case 'd':
debug = true;
break;
default:
fputs("Usage: make [-d]\n", stderr);
exit(EXIT_FAILURE);
}
}
argc -= optind;
argv += optind;
if (argc > 0) {
if (streq(*argv, "clean")) {
cmdadd(&c, "rm", "-f", "grab");
cmdprc(c);
} else if (streq(*argv, "install")) {
char *bin, *man;
bin = mkoutpath("/bin");
man = mkoutpath("/share/man/man1");
cmdadd(&c, "mkdir", "-p", bin, man);
cmdprc(c);
cmdadd(&c, "cp", "grab", bin);
cmdprc(c);
cmdadd(&c, "cp", "grab.1", man);
cmdprc(c);
}
} else {
if (foutdated("grab", "grab.c", "da.h")) {
cmdadd(&c, CC, WFLAGS);
if (debug)
cmdadd(&c, DFLAGS);
else
cmdadd(&c, CFLAGS);
cmdadd(&c, "-o", "grab", "grab.c");
cmdprc(c);
}
}
return EXIT_SUCCESS;
}
char *
_mkoutpath(const char **xs, size_t n)
{
#define trycat(s) \
do { \
if (_strlcat(buf, (s), PATH_MAX) >= PATH_MAX) \
goto toolong; \
} while (0)
char *p, *buf;
buf = bufalloc(NULL, PATH_MAX, sizeof(char));
buf[0] = 0;
if (p = getenv("DESTDIR"), p && *p)
trycat(p);
p = getenv("PREFIX");
trycat(p && *p ? p : PREFIX);
for (size_t i = 0; i < n; i++)
trycat(xs[i]);
return buf;
toolong:
errno = ENAMETOOLONG;
die(__func__);
}
size_t
_strlcat(char *dst, const char *src, size_t size)
{
char *d = dst;
const char *s = src;
size_t n = size;
size_t dlen;
while (n-- != 0 && *d != '\0')
d++;
dlen = d - dst;
n = size - dlen;
if (n == 0) {
while (*s++)
;
return dlen + (s - src - 1);
}
while (*s != '\0') {
if (n != 1) {
*d++ = *s;
n--;
}
s++;
}
*d = '\0';
return dlen + (s - src);
}
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