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Support <isystem> includes in monorepo

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Justine Tunney 2023-11-08 19:06:35 -08:00
parent 5330442d85
commit ea28f93a26
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GPG key ID: BE714B4575D6E328
8 changed files with 298 additions and 51 deletions
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41
tool/build/mkdeps.c
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@ -18,6 +18,7 @@
╚─────────────────────────────────────────────────────────────────────────────*/
#include "libc/calls/calls.h"
#include "libc/errno.h"
#include "libc/fmt/libgen.h"
#include "libc/fmt/magnumstrs.internal.h"
#include "libc/intrin/bits.h"
#include "libc/limits.h"
@ -81,7 +82,8 @@
" INPUT should be source or @args.txt\n" \
"\n"
#define kIncludePrefix "include \""
#define kIncludePrefix "include "
#define kSystemIncludes "libc/isystem/"
struct Source {
unsigned hash;
@ -267,14 +269,17 @@ static void LoadRelationships(int argc, char *argv[]) {
char *map;
ssize_t rc;
struct GetArgs ga;
char srcdirbuf[256];
size_t n, size, inclen;
unsigned srcid, dependency;
const char *p, *pe, *src, *path, *pathend;
const char *p, *pe, *src, *path, *pathend, *srcdir;
getargs_init(&ga, argv + optind);
inclen = strlen(kIncludePrefix);
while ((src = getargs_next(&ga))) {
n = strlen(src);
srcid = GetSourceId(src, n);
strlcpy(srcdirbuf, src, sizeof(srcdirbuf));
srcdir = dirname(srcdirbuf);
if ((fd = open(src, O_RDONLY)) == -1) {
if (errno == ENOENT && ga.path) {
// This code helps GNU Make automatically fix itself when we
@ -296,13 +301,33 @@ static void LoadRelationships(int argc, char *argv[]) {
DieSys(src);
}
for (p = map + 1, pe = map + size; p < pe; ++p) {
int right;
char juf[256], *jb;
char buf[256], *bp = buf;
if (!(p = memmem(p, pe - p, kIncludePrefix, inclen))) break;
path = p + inclen;
pathend = memchr(path, '"', pe - path);
if (pathend && //
(p[-1] == '#' || p[-1] == '.') && //
(p - map == 1 || p[-2] == '\n')) { //
dependency = GetSourceId(path, pathend - path);
path = p + inclen + 1;
if (path[-1] == '"') {
right = '"';
} else if (path[-1] == '<') {
bp = mempcpy(bp, kSystemIncludes, strlen(kSystemIncludes));
right = '>';
} else {
continue;
}
pathend = memchr(path, right, pe - path);
if (pathend && pathend - path > 0 && //
(p[-1] == '#' || p[-1] == '.') && //
(p - map == 1 || p[-2] == '\n') && //
(bp - buf) + (pathend - path) < sizeof(buf)) { //
*(bp = mempcpy(bp, path, pathend - path)) = 0;
if (right == '>' && !isregularfile(buf)) continue;
if (!strchr(buf, '/') && !isregularfile(buf)) {
if (!(jb = __join_paths(juf, sizeof(juf), srcdir, buf))) continue;
if (!isregularfile(jb)) continue;
dependency = GetSourceId(jb, strlen(jb));
} else {
dependency = GetSourceId(buf, bp - buf);
}
AppendEdge(&edges, dependency, srcid);
p = pathend;
}