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/*-------------------------------------------------------------------------
*
* pg_config.c
*
* This program reports various pieces of information about the
* installed version of PostgreSQL. Packages that interface to
* PostgreSQL can use it to configure their build.
*
* This is a C implementation of the previous shell script written by
* Peter Eisentraut <peter_e@gmx.net>, with adjustments made to
* accommodate the possibility that the installation has been relocated from
* the place originally configured.
*
* author of C translation: Andrew Dunstan mailto:andrew@dunslane.net
*
* This code is released under the terms of the PostgreSQL License.
*
* Portions Copyright (c) 1996-2020, PostgreSQL Global Development Group
*
* src/bin/pg_config/pg_config.c
*
*-------------------------------------------------------------------------
*/
#include "postgres_fe.h"
#include "common/config_info.h"
#include "port.h"
static const char *progname;
/*
* Table of known information items
*
* Be careful to keep this in sync with the help() display.
*/
typedef struct
{
const char *switchname;
const char *configname;
} InfoItem;
static const InfoItem info_items[] = {
{"--bindir", "BINDIR"},
{"--docdir", "DOCDIR"},
{"--htmldir", "HTMLDIR"},
{"--includedir", "INCLUDEDIR"},
{"--pkgincludedir", "PKGINCLUDEDIR"},
{"--includedir-server", "INCLUDEDIR-SERVER"},
{"--libdir", "LIBDIR"},
{"--pkglibdir", "PKGLIBDIR"},
{"--localedir", "LOCALEDIR"},
{"--mandir", "MANDIR"},
{"--sharedir", "SHAREDIR"},
{"--sysconfdir", "SYSCONFDIR"},
{"--pgxs", "PGXS"},
{"--configure", "CONFIGURE"},
{"--cc", "CC"},
{"--cppflags", "CPPFLAGS"},
{"--cflags", "CFLAGS"},
{"--cflags_sl", "CFLAGS_SL"},
{"--ldflags", "LDFLAGS"},
{"--ldflags_ex", "LDFLAGS_EX"},
{"--ldflags_sl", "LDFLAGS_SL"},
{"--libs", "LIBS"},
{"--version", "VERSION"},
{NULL, NULL}
};
static void
help(void)
{
printf(_("\n%s provides information about the installed version of PostgreSQL.\n\n"), progname);
printf(_("Usage:\n"));
printf(_(" %s [OPTION]...\n\n"), progname);
printf(_("Options:\n"));
printf(_(" --bindir show location of user executables\n"));
printf(_(" --docdir show location of documentation files\n"));
printf(_(" --htmldir show location of HTML documentation files\n"));
printf(_(" --includedir show location of C header files of the client\n"
" interfaces\n"));
printf(_(" --pkgincludedir show location of other C header files\n"));
printf(_(" --includedir-server show location of C header files for the server\n"));
printf(_(" --libdir show location of object code libraries\n"));
printf(_(" --pkglibdir show location of dynamically loadable modules\n"));
printf(_(" --localedir show location of locale support files\n"));
printf(_(" --mandir show location of manual pages\n"));
printf(_(" --sharedir show location of architecture-independent support files\n"));
printf(_(" --sysconfdir show location of system-wide configuration files\n"));
printf(_(" --pgxs show location of extension makefile\n"));
printf(_(" --configure show options given to \"configure\" script when\n"
" PostgreSQL was built\n"));
printf(_(" --cc show CC value used when PostgreSQL was built\n"));
printf(_(" --cppflags show CPPFLAGS value used when PostgreSQL was built\n"));
printf(_(" --cflags show CFLAGS value used when PostgreSQL was built\n"));
printf(_(" --cflags_sl show CFLAGS_SL value used when PostgreSQL was built\n"));
printf(_(" --ldflags show LDFLAGS value used when PostgreSQL was built\n"));
printf(_(" --ldflags_ex show LDFLAGS_EX value used when PostgreSQL was built\n"));
printf(_(" --ldflags_sl show LDFLAGS_SL value used when PostgreSQL was built\n"));
printf(_(" --libs show LIBS value used when PostgreSQL was built\n"));
printf(_(" --version show the PostgreSQL version\n"));
printf(_(" -?, --help show this help, then exit\n"));
printf(_("\nWith no arguments, all known items are shown.\n\n"));
printf(_("Report bugs to <%s>.\n"), PACKAGE_BUGREPORT);
printf(_("%s home page: <%s>\n"), PACKAGE_NAME, PACKAGE_URL);
}
static void
advice(void)
{
fprintf(stderr, _("Try \"%s --help\" for more information.\n"), progname);
}
static void
show_item(const char *configname,
ConfigData *configdata,
size_t configdata_len)
{
int i;
for (i = 0; i < configdata_len; i++)
{
if (strcmp(configname, configdata[i].name) == 0)
printf("%s\n", configdata[i].setting);
}
}
int
main(int argc, char **argv)
{
ConfigData *configdata;
size_t configdata_len;
char my_exec_path[MAXPGPATH];
int i;
int j;
set_pglocale_pgservice(argv[0], PG_TEXTDOMAIN("pg_config"));
progname = get_progname(argv[0]);
/* check for --help */
for (i = 1; i < argc; i++)
{
if (strcmp(argv[i], "--help") == 0 || strcmp(argv[i], "-?") == 0)
{
help();
exit(0);
}
}
if (find_my_exec(argv[0], my_exec_path) < 0)
{
fprintf(stderr, _("%s: could not find own program executable\n"), progname);
exit(1);
}
configdata = get_configdata(my_exec_path, &configdata_len);
/* no arguments -> print everything */
if (argc < 2)
{
for (i = 0; i < configdata_len; i++)
printf("%s = %s\n", configdata[i].name, configdata[i].setting);
exit(0);
}
/* otherwise print requested items */
for (i = 1; i < argc; i++)
{
for (j = 0; info_items[j].switchname != NULL; j++)
{
if (strcmp(argv[i], info_items[j].switchname) == 0)
{
show_item(info_items[j].configname,
configdata, configdata_len);
break;
}
}
if (info_items[j].switchname == NULL)
{
fprintf(stderr, _("%s: invalid argument: %s\n"),
progname, argv[i]);
advice();
exit(1);
}
}
return 0;
}