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#define _GNU_SOURCE
#include <errno.h>
#include <glob.h>
#include <langinfo.h>
#include <libgen.h>
#include <locale.h>
#include <stdarg.h>
#include <stdint.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <unistd.h>
#if __has_include(<features.h>)
# include <features.h>
#endif
#include "cbs.h"
#define flagset(o) (flags & UINT32_C(1)<<(o)-'a')
[[noreturn, gnu::format(printf, 1, 2)]]
static void err(const char *, ...);
static void build_mlib(void);
static uint32_t flags;
static const char *argv0;
static char *cflags_req[] = {
"-Wall",
"-Wextra",
"-Wpedantic",
"-Wvla",
"-Wno-attributes",
"-Wno-empty-body", /* Annoying when debugging */
"-Wno-pointer-sign",
"-Wno-parentheses",
"-Ivendor/mlib/include",
"-pipe",
"-std=c23",
#ifdef __linux__
"-D_FILE_OFFSET_BITS=64",
#endif
#ifdef __GLIBC__
"-D_GNU_SOURCE",
#endif
"-DPCRE2_CODE_UNIT_WIDTH=8",
};
static char *cflags_dbg[] = {
"-DDEBUG=1",
"-fsanitize=address,undefined",
#if __GNUC__ && __APPLE__
"-ggdb2",
#else
"-ggdb3",
#endif
"-O0",
};
static char *cflags_rls[] = {
"-DNDEBUG=1",
"-flto",
#ifdef __APPLE__
"-mcpu=native",
#else
"-march=native",
"-mtune=native",
#endif
"-O3",
};
int
main(int argc, char **argv)
{
cbsinit(argc, argv);
rebuild();
setlocale(LC_ALL, "");
argv0 = basename(argv[0]);
int opt;
while ((opt = getopt(argc, argv, "mr")) != -1) {
switch (opt) {
case '?':
usage:
fprintf(stderr,
"Usage: %s [-mr]\n"
" %s clean | distclean | install\n",
*argv, *argv);
exit(EXIT_FAILURE);
default:
flags |= UINT32_C(1) << opt-'a';
}
}
argc -= optind;
argv += optind;
if (argc > 1)
goto usage;
if (argc == 1) {
struct strs cmd = {};
if (strcmp(argv[0], "clean") == 0) {
strspushl(&cmd, "rm", "-f", "grab", "git-grab");
} else if (strcmp(argv[0], "distclean") == 0) {
strspushl(&cmd, "rm", "-f", "grab", "git-grab", "make");
if (fexists("vendor/mlib/make")) {
cmdput(cmd);
if (cmdexec(cmd) != EXIT_SUCCESS)
exit(EXIT_FAILURE);
strszero(&cmd);
strspushl(&cmd, "vendor/mlib/make", "clean");
}
} else if (strcmp(argv[0], "install") == 0) {
/* TODO: Add install target */
} else {
err(strcmp(nl_langinfo(CODESET), "UTF-8") == 0
? "invalid subcommand — ‘%s’"
: "invalid subcommand -- `%s'",
argv[0]);
}
cmdput(cmd);
return cmdexec(cmd);
}
build_mlib();
glob_t g;
if (glob("src/*.c", 0, nullptr, &g))
err("glob:");
struct strs cmd = {};
for (char ch = '0'; ch <= '1'; ch++) {
strspushenvl(&cmd, "CC", "cc");
strspush(&cmd, cflags_req, lengthof(cflags_req));
if (flagset('r'))
strspushenv(&cmd, "CFLAGS", cflags_rls, lengthof(cflags_rls));
else
strspushenv(&cmd, "CFLAGS", cflags_dbg, lengthof(cflags_dbg));
char buf[] = "-DGIT_GRAB=X";
buf[sizeof(buf) - 2] = ch;
strspushl(&cmd, buf);
if (!pcquery(&cmd, "libpcre2-8", PC_CFLAGS | PC_LIBS))
strspushl(&cmd, "-lpcre2-8");
strspushl(&cmd, "-o", ch == '0' ? "grab" : "git-grab");
strspush(&cmd, g.gl_pathv, g.gl_pathc);
strspushl(&cmd, "vendor/mlib/libmlib.a");
cmdput(cmd);
if (cmdexec(cmd) != EXIT_SUCCESS)
exit(EXIT_FAILURE);
strszero(&cmd);
}
return EXIT_SUCCESS;
}
void
build_mlib(void)
{
struct strs cmd = {};
if (flagset('m') || !fexists("vendor/mlib/make")) {
strspushenvl(&cmd, "CC", "cc");
strspushl(&cmd, "-std=c23", "-o", "vendor/mlib/make", "vendor/mlib/make.c");
cmdput(cmd);
if (cmdexec(cmd) != EXIT_SUCCESS)
exit(EXIT_FAILURE);
strszero(&cmd);
}
strspushl(&cmd, "./vendor/mlib/make");
if (flagset('m'))
strspushl(&cmd, "-f");
if (flagset('r'))
strspushl(&cmd, "-r");
cmdput(cmd);
if (cmdexec(cmd) != EXIT_SUCCESS)
exit(EXIT_FAILURE);
strsfree(&cmd);
}
void
err(const char *fmt, ...)
{
va_list ap;
va_start(ap, fmt);
int save = errno;
flockfile(stderr);
fprintf(stderr, "%s: ", argv0);
vfprintf(stderr, fmt, ap);
if (fmt[strlen(fmt) - 1] == ':')
fprintf(stderr, " %s", strerror(save));
fputc('\n', stderr);
funlockfile(stderr);
va_end(ap);
exit(EXIT_FAILURE);
}
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