#include <ccan/str/str.h>
#include <ccan/grab_file/grab_file.h>
#include <ccan/str_talloc/str_talloc.h>
+#include <ccan/read_write_all/read_write_all.h>
#include "tools.h"
+#include <sys/types.h>
+#include <sys/stat.h>
+#include <fcntl.h>
#include <err.h>
#include <stdbool.h>
#include <unistd.h>
+#include <errno.h>
static char ** __attribute__((format(printf, 3, 4)))
lines_from_cmd(const void *ctx, unsigned int *num, char *format, ...)
return strsplit(ctx, buffer, "\n", num);
}
-static int unlink_info(char *infofile)
-{
- unlink(infofile);
- return 0;
-}
-
-/* Be careful about trying to compile over running programs (parallel make) */
+/* Be careful about trying to compile over running programs (parallel make).
+ * temp_file helps here. */
static char *compile_info(const void *ctx, const char *dir)
{
- char *infofile = talloc_asprintf(ctx, "%s/info.%u", dir, getpid());
- char *cmd = talloc_asprintf(ctx, "cc " CFLAGS " -o %s -x c %s/_info",
- infofile, dir);
- talloc_set_destructor(infofile, unlink_info);
- if (system(cmd) != 0)
+ char *info_c_file, *info, *ccandir, *compiled;
+ size_t len;
+ int fd;
+
+ /* Copy it to a file with proper .c suffix. */
+ info = grab_file(ctx, talloc_asprintf(ctx, "%s/_info", dir), &len);
+ if (!info)
+ return NULL;
+
+ info_c_file = maybe_temp_file(ctx, ".c", false, "_info");
+ fd = open(info_c_file, O_WRONLY|O_CREAT|O_EXCL, 0600);
+ if (fd < 0)
+ return NULL;
+ if (!write_all(fd, info, len))
+ return NULL;
+
+ if (close(fd) != 0)
return NULL;
- return infofile;
+ ccandir = talloc_dirname(ctx, dir);
+ *strrchr(ccandir, '/') = '\0';
+
+ compiled = maybe_temp_file(ctx, "", false, "info");
+ if (compile_and_link(ctx, info_c_file, ccandir, "", "", "",
+ compiled))
+ return NULL;
+ return compiled;
}
-static char **get_one_deps(const void *ctx, const char *dir, unsigned int *num)
+static char **get_one_deps(const void *ctx, const char *dir,
+ unsigned int *num, char **infofile)
{
- char **deps, *cmd, *infofile;
+ char **deps, *cmd;
- infofile = compile_info(ctx, dir);
- if (!infofile)
- errx(1, "Could not compile _info for '%s'", dir);
+ if (!*infofile) {
+ *infofile = compile_info(ctx, dir);
+ if (!*infofile)
+ errx(1, "Could not compile _info for '%s'", dir);
+ }
- cmd = talloc_asprintf(ctx, "%s depends", infofile);
+ cmd = talloc_asprintf(ctx, "%s depends", *infofile);
deps = lines_from_cmd(cmd, num, "%s", cmd);
if (!deps)
err(1, "Could not run '%s'", cmd);
/* This is a terrible hack. We scan for ccan/ strings. */
static char **get_one_safe_deps(const void *ctx,
- const char *dir, unsigned int *num)
+ const char *dir,
+ unsigned int *num,
+ char **infofile)
{
char **deps, **lines, *raw, *fname;
unsigned int i, n = 0;
/* Gets all the dependencies, recursively. */
static char **
get_all_deps(const void *ctx, const char *dir,
- char **(*get_one)(const void *, const char *, unsigned int *))
+ char **infofile,
+ char **(*get_one)(const void *, const char *,
+ unsigned int *, char **))
{
char **deps;
unsigned int i, num;
- deps = get_one(ctx, dir, &num);
+ deps = get_one(ctx, dir, &num, infofile);
for (i = 0; i < num; i++) {
char **newdeps;
unsigned int j, newnum;
+ char *subinfo = NULL;
+ char *subdir;
if (!strstarts(deps[i], "ccan/"))
continue;
- newdeps = get_one(ctx, deps[i], &newnum);
+ subdir = talloc_asprintf(ctx, "%s/%s",
+ talloc_dirname(ctx, dir),
+ deps[i] + strlen("ccan/"));
+ newdeps = get_one(ctx, subdir, &newnum, &subinfo);
/* Should be short, so brute-force out dups. */
for (j = 0; j < newnum; j++) {
return deps;
}
-char **get_deps(const void *ctx, const char *dir, bool recurse)
+char **get_libs(const void *ctx, const char *dir,
+ unsigned int *num, char **infofile)
{
+ char **libs, *cmd;
+
+ if (!*infofile) {
+ *infofile = compile_info(ctx, dir);
+ if (!*infofile)
+ errx(1, "Could not compile _info for '%s'", dir);
+ }
+
+ cmd = talloc_asprintf(ctx, "%s libs", *infofile);
+ libs = lines_from_cmd(cmd, num, "%s", cmd);
+ if (!libs)
+ err(1, "Could not run '%s'", cmd);
+ return libs;
+}
+
+char **get_deps(const void *ctx, const char *dir,
+ bool recurse, char **infofile)
+{
+ char *temp = NULL, **ret;
+ if (!infofile)
+ infofile = &temp;
+
if (!recurse) {
unsigned int num;
- return get_one_deps(ctx, dir, &num);
+ ret = get_one_deps(ctx, dir, &num, infofile);
+ } else
+ ret = get_all_deps(ctx, dir, infofile, get_one_deps);
+
+ if (infofile == &temp && temp) {
+ unlink(temp);
+ talloc_free(temp);
}
- return get_all_deps(ctx, dir, get_one_deps);
+ return ret;
}
-char **get_safe_ccan_deps(const void *ctx, const char *dir, bool recurse)
+char **get_safe_ccan_deps(const void *ctx, const char *dir,
+ bool recurse, char **infofile)
{
if (!recurse) {
unsigned int num;
- return get_one_safe_deps(ctx, dir, &num);
+ return get_one_safe_deps(ctx, dir, &num, infofile);
}
- return get_all_deps(ctx, dir, get_one_safe_deps);
+ return get_all_deps(ctx, dir, infofile, get_one_safe_deps);
}
-
projects / ccan / blobdiff