/*
scconfig - detection of environmental variable access features
Copyright (C) 2014 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"
int find_main_arg3(const char *name, int logdepth, int fatal)
{
char *out;
char *test_c =
NL "#include <stdlib.h>"
NL "#include <stdio.h>"
NL "int main(int argc, char *argv[], char *env[])"
NL "{"
NL " char **e;"
NL " int cnt;"
NL " for(e = env, cnt = 0; *e != NULL; e++, cnt++) ;"
NL " printf(\"%d\\n\", cnt);"
NL " return 0;"
NL "}"
NL;
require("cc/cc", logdepth, fatal);
report("Checking for main() with 3 arguments... ");
logprintf(logdepth, "find_main_3args: checking for main() with 3 arguments\n");
if (compile_run(logdepth+1, test_c, NULL, NULL, NULL, &out) == 0) {
if (atoi(out) > 1) {
put("libs/env/main_3arg", strue);
report("OK\n");
free(out);
return 0;
}
free(out);
report("not found (broken output).\n");
}
else {
report("not found (no output).\n");
}
put("libs/env/main_3arg", sfalse);
return 1;
}
int find_environ(const char *name, int logdepth, int fatal)
{
char *out;
char *test_c =
NL "#include <stdlib.h>"
NL "#include <stdio.h>"
NL "extern char **environ;"
NL "int main(int argc, char *argv[])"
NL "{"
NL " char **e;"
NL " int cnt;"
NL " for(e = environ, cnt = 0; *e != NULL; e++, cnt++) ;"
NL " printf(\"%d\\n\", cnt);"
NL " return 0;"
NL "}"
NL;
require("cc/cc", logdepth, fatal);
report("Checking for extern environ... ");
logprintf(logdepth, "find_environ: checking for extern environ\n");
if (compile_run(logdepth+1, test_c, NULL, NULL, NULL, &out) == 0) {
if (atoi(out) > 1) {
put("libs/env/environ", strue);
report("OK\n");
free(out);
return 0;
}
free(out);
report("not found (broken output).\n");
}
else {
report("not found (no output).\n");
}
put("libs/env/environ", sfalse);
return 1;
}
int find_putenv(const char *name, int logdepth, int fatal)
{
char *test_c =
NL "#include <stdlib.h>"
NL "#include <stdio.h>"
NL "int main(int argc, char *argv[])"
NL "{"
NL " putenv(\"SCCONFIG_TEST=bad\");"
NL " putenv(\"SCCONFIG_TEST=OK\");"
NL " printf(\"%s\\n\", getenv(\"SCCONFIG_TEST\"));"
NL " return 0;"
NL "}"
NL;
require("cc/cc", logdepth, fatal);
report("Checking for putenv()... ");
logprintf(logdepth, "find_putenv: trying to find putenv...\n");
logdepth++;
if (try_icl(logdepth, "libs/env/putenv", test_c, "", NULL, NULL))
return 0;
if (try_icl(logdepth, "libs/env/putenv", test_c, "#define _XOPEN_SOURCE", NULL, NULL))
return 0;
if (try_icl(logdepth, "libs/env/putenv", test_c, "#define _SVID_SOURCE", NULL, NULL))
return 0;
return try_fail(logdepth, "libs/env/putenv");
}
int find_setenv(const char *name, int logdepth, int fatal)
{
char *test_c =
NL "#include <stdlib.h>"
NL "#include <stdio.h>"
NL "int main(int argc, char *argv[])"
NL "{"
NL " setenv(\"SCCONFIG_TEST\", \"bad\", 1);"
NL " setenv(\"SCCONFIG_TEST\", \"OK\", 1);"
NL " printf(\"%s\\n\", getenv(\"SCCONFIG_TEST\"));"
NL " return 0;"
NL "}"
NL;
require("cc/cc", logdepth, fatal);
report("Checking for setenv()... ");
logprintf(logdepth, "find_setenv: trying to find setenv...\n");
logdepth++;
if (try_icl(logdepth, "libs/env/setenv", test_c, "", NULL, NULL))
return 0;
if (try_icl(logdepth, "libs/env/setenv", test_c, "#define _BSD_SOURCE", NULL, NULL))
return 0;
if (try_icl(logdepth, "libs/env/setenv", test_c, "#define _POSIX_C_SOURCE 200112L", NULL, NULL))
return 0;
if (try_icl(logdepth, "libs/env/setenv", test_c, "#define _XOPEN_SOURCE 600", NULL, NULL))
return 0;
return try_fail(logdepth, "libs/env/setenv");
}