/*
scconfig - detect I/O features of the system
Copyright (C) 2010 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 <ctype.h>
#include <unistd.h>
#include "libs.h"
#include "log.h"
#include "db.h"
#include "dep.h"
int find_io_pipe(const char *name, int logdepth, int fatal)
{
char *test_c =
NL "#include <unistd.h>"
NL "#include <stdio.h>"
NL "int main() {"
NL " int fd[2];"
NL " if (pipe(fd) == 0)"
NL " puts(\"OK\");"
NL " return 0;"
NL "}"
NL;
require("cc/cc", logdepth, fatal);
report("Checking for pipe(2)... ");
logprintf(logdepth, "find_io_pipe: trying to find pipe(2)...\n");
logdepth++;
if (try_icl(logdepth, "libs/io/pipe", test_c, "#include <unistd.h>\n", NULL, NULL)) return 0;
return try_fail(logdepth, "libs/io/pipe");
}
int find_io_pipe2(const char *name, int logdepth, int fatal)
{
const char *test_c =
NL "#include <unistd.h>"
NL "#include <stdio.h>"
NL "int main() {"
NL " int fd[2];"
NL " if (pipe2(fd, 0) == 0)"
NL " puts(\"OK\");"
NL " return 0;"
NL "}"
NL;
require("cc/cc", logdepth, fatal);
report("Checking for pipe2(2)... ");
logprintf(logdepth, "find_io_pipe2: trying to find pipe2(2)...\n");
logdepth++;
if (try_icl(logdepth, "libs/io/pipe2", test_c, "#include <unistd.h>\n", NULL, NULL)) return 0;
return try_fail(logdepth, "libs/io/pipe2");
}
int find_io__pipe(const char *name, int logdepth, int fatal)
{
const char *test_c =
NL "#include <stdio.h>"
NL "int main() {"
NL " int fd[2];"
NL " if (_pipe(fd, 1024, _O_BINARY) == 0)"
NL " puts(\"OK\");"
NL " return 0;"
NL "}"
NL;
require("cc/cc", logdepth, fatal);
report("Checking for _pipe()... ");
logprintf(logdepth, "find_io__pipe: trying to find _pipe()...\n");
logdepth++;
if (try_icl(logdepth, "libs/io/_pipe", test_c, "#include <io.h>\n#include <fcntl.h>\n", NULL, NULL)) return 0;
return try_fail(logdepth, "libs/io/_pipe");
}
int find_io_dup2(const char *name, int logdepth, int fatal)
{
char *test_c =
NL "#include <unistd.h>"
NL "int main() {"
NL " int fd;"
NL " if (dup2(1, 4) == 4)"
NL " write(4, \"OK\\n\", 3); "
NL " return 0;"
NL "}"
NL;
require("cc/cc", logdepth, fatal);
report("Checking for dup2(2)... ");
logprintf(logdepth, "find_io_dup2: trying to find dup2(2)...\n");
logdepth++;
if (try_icl(logdepth, "libs/io/dup2", test_c, NULL, NULL, NULL)) return 0;
return try_fail(logdepth, "libs/io/dup2");
}
int find_io_fileno(const char *name, int logdepth, int fatal)
{
char test_c[256];
char *test_c_ =
NL "#include <stdio.h>"
NL "int main() {"
/* NOTE: can not check for implicit declaration as fileno() may be a macro (e.g. on MINIX3) */
NL " if (%s(stdout) >= 0)"
NL " puts(\"OK\"); "
NL " return 0;"
NL "}"
NL;
require("cc/cc", logdepth, fatal);
report("Checking for fileno(3)... ");
logprintf(logdepth, "find_io_fileno: trying to find fileno(3)...\n");
logdepth++;
/* UNIX */
sprintf(test_c, test_c_, "fileno");
if (try_icl(logdepth, "libs/io/fileno", test_c, NULL, NULL, NULL)) {
put("libs/io/fileno/call", "fileno");
return 0;
}
sprintf(test_c, test_c_, "fileno");
if (try_icl(logdepth, "libs/io/fileno", test_c, "#include <unistd.h>\n", NULL, NULL)) {
put("libs/io/fileno/call", "fileno");
return 0;
}
sprintf(test_c, test_c_, "fileno");
if (try_icl(logdepth, "libs/io/fileno", test_c, "#define _XOPEN_SOURCE\n#include <unistd.h>\n", NULL, NULL)) {
put("libs/io/fileno/call", "fileno");
return 0;
}
/* windows */
sprintf(test_c, test_c_, "_fileno");
if (try_icl(logdepth, "libs/io/fileno", test_c, "#include <stdio.h>\n", NULL, NULL)) {
put("libs/io/fileno/call", "_fileno");
return 0;
}
return try_fail(logdepth, "libs/io/fileno");
}
int find_io_lseek(const char *name, int logdepth, int fatal)
{
#define NODE "libs/io/lseek"
char test_c[3256];
const char *test_c_template =
NL "#include <stdio.h>"
NL "#include <fcntl.h>"
NL "int main() {"
NL " const char *filename = \"%s\";"
NL no_implicit(int, "%s", "%s")
NL " int fd = open(filename, O_WRONLY);"
NL " if (write(fd, \"abc\", 3) == 3 && %s(fd, 1, SEEK_SET) == 1)"
NL " puts(\"OK\"); "
NL " return 0;"
NL "}"
NL;
char *tmpf;
const char *incs[] = {"#include <unistd.h>","#include <io.h>",NULL};
const char *fns[] = {"lseek", "_lseek", NULL};
const char **inc;
const char **fn;
require("cc/cc", logdepth, fatal);
report("Checking for lseek(2)... ");
logprintf(logdepth, "find_io_lseek: trying to find lseek(2)...\n");
logdepth++;
tmpf = tempfile_new(".psx");
for (inc = incs, fn = fns; *fn; ++inc, ++fn) {
sprintf(test_c, test_c_template, tmpf, *fn, *fn, *fn);
if (try_icl(logdepth, NODE, test_c, *inc, NULL, NULL)) {
unlink(tmpf);
free(tmpf);
put(NODE "/call", *fn);
return 0;
}
}
unlink(tmpf);
free(tmpf);
return try_fail(logdepth, NODE);
#undef NODE
}
int find_io_popen(const char *name, int logdepth, int fatal)
{
const char **i, *incs[] = {"#define _XOPEN_SOURCE", "#define _BSD_SOURCE", "#define _POSIX_C_SOURCE 2", NULL};
char *test_c =
NL "#include <stdlib.h>"
NL "#include <stdio.h>"
NL "int main() {"
NL " FILE *f = popen(\"echo OK\", \"r\");"
NL " char line[16];"
NL " if (f == NULL) return 0;"
NL " if (fgets(line, sizeof(line)-1, f) == NULL) return 0;"
NL " puts(line);"
NL " return 0;"
NL "}"
NL;
require("cc/cc", logdepth, fatal);
report("Checking for popen(3)... ");
logprintf(logdepth, "find_io_popen: trying to find popen(3)...\n");
logdepth++;
for(i = incs; *i != NULL; i++)
if (try_icl(logdepth, "libs/io/popen", test_c, *i, NULL, NULL)) return 0;
return try_fail(logdepth, "libs/io/popen");
}