/*
scconfig - detection of standard library features
Copyright (C) 2009 Tibor Palinkas
This library is free software; you can redistribute it and/or
modify it under the terms of the GNU Lesser General Public
License as published by the Free Software Foundation; either
version 2.1 of the License, or (at your option) any later version.
This library is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public
License along with this library; if not, write to the Free Software
Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
Project page: http://repo.hu/projects/scconfig
Contact via email: scconfig [at] igor2.repo.hu
*/
#include <stdlib.h>
#include <stdio.h>
#include <string.h>
#include "libs.h"
#include "log.h"
#include "db.h"
#include "dep.h"
static int try_bad(int logdepth, const char *test_c, char *cflags, char *ldflags)
{
char *out = NULL;
logprintf(logdepth, "trying signal (neg) with ldflags '%s'\n", ldflags == NULL ? get("cc/ldflags") : ldflags);
if (compile_run(logdepth+1, test_c, NULL, cflags, ldflags, &out) == 0) {
if (target_emu_fail(out) || (strncmp(out, "BAD", 3) == 0)) {
free(out);
return 0;
}
free(out);
}
return 1;
}
int find_signal_raise(const char *name, int logdepth, int fatal)
{
char *test_c =
NL "#include <stdio.h>"
NL "#include <signal.h>"
NL "int main(int argc, char *argv[]) {"
NL " printf(\"OK\\n\");"
NL " if (argc == 16)"
NL " raise(1);"
NL " return 0;"
NL "}"
NL;
require("cc/cc", logdepth, fatal);
report("Checking for raise()... ");
logprintf(logdepth, "find_signal_raise: trying to find raise()...\n");
logdepth++;
if (try_icl(logdepth, "signal/raise", test_c, NULL, NULL, NULL))
return 0;
return try_fail(logdepth, "signal/raise");
}
int find_signal_names(const char *rname, int logdepth, int fatal)
{
char *test_c_exists =
NL "#include <stdio.h>"
NL "#include <signal.h>"
NL "int main(int argc, char *argv[]) {"
NL " printf(\"OK\\n\");"
NL " if (argc == 16)"
NL " raise(%s);"
NL " return 0;"
NL "}"
NL;
char *test_c_terms =
NL "#include <stdio.h>"
NL "#include <signal.h>"
NL "int main() {"
NL " raise(%s);"
NL " printf(\"BAD\\n\");"
NL " return 0;"
NL "}"
NL;
char test_c[256];
const char *names[] = {"SIGINT", "SIGABRT", "SIGKILL", "SIGTERM", "SIGQUIT", "SIGHUP", "SIGFPE", "SIGSEGV", "SIGPIPE", NULL};
const char **name;
char path[256], *pathend;
const char *prefix = "signal/names/";
require("cc/cc", logdepth, fatal);
require("signal/raise/*", logdepth, fatal);
strcpy(path, prefix);
pathend = path + strlen(prefix);
for(name = names; *name != NULL; name++) {
/* check whether it exists */
report("Checking whether %s exists... ", *name);
logprintf(logdepth, "find_signal_names: checking whether %s exists\n", *name);
logdepth++;
sprintf(test_c, test_c_exists, *name);
strcpy(pathend, *name);
if (!try_icl(logdepth, path, test_c, NULL, NULL, NULL)) {
logdepth--;
continue;
}
/* check whether it exists */
logdepth--;
report("Checking whether %s terminates... ", *name);
logprintf(logdepth, "find_signal_names: checking whether %s terminates\n", *name);
logdepth++;
sprintf(test_c, test_c_terms, *name);
sprintf(pathend, "%s/terminates", *name);
if (try_bad(logdepth, test_c, NULL, "")) {
put(path, strue);
report("terminates\n");
}
else {
report("does not terminate\n");
put(path, sfalse);
}
logdepth--;
}
/* to avoid redetection */
put("signal/names/presents", strue);
return 0;
}