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