LCOV - code coverage report
Current view: top level - src/bin/pg_config - pg_config.c (source / functions) Coverage Total Hit
Test: PostgreSQL 20devel Lines: 97.0 % 67 65
Test Date: 2026-07-25 22:15:46 Functions: 100.0 % 4 4
Legend: Lines:     hit not hit
Branches: + taken - not taken # not executed
Branches: 91.7 % 24 22

             Branch data     Line data    Source code
       1                 :             : /*-------------------------------------------------------------------------
       2                 :             :  *
       3                 :             :  * pg_config.c
       4                 :             :  *
       5                 :             :  * This program reports various pieces of information about the
       6                 :             :  * installed version of PostgreSQL.  Packages that interface to
       7                 :             :  * PostgreSQL can use it to configure their build.
       8                 :             :  *
       9                 :             :  * This is a C implementation of the previous shell script written by
      10                 :             :  * Peter Eisentraut <peter_e@gmx.net>, with adjustments made to
      11                 :             :  * accommodate the possibility that the installation has been relocated from
      12                 :             :  * the place originally configured.
      13                 :             :  *
      14                 :             :  * author of C translation: Andrew Dunstan     mailto:andrew@dunslane.net
      15                 :             :  *
      16                 :             :  * This code is released under the terms of the PostgreSQL License.
      17                 :             :  *
      18                 :             :  * Portions Copyright (c) 1996-2026, PostgreSQL Global Development Group
      19                 :             :  *
      20                 :             :  * src/bin/pg_config/pg_config.c
      21                 :             :  *
      22                 :             :  *-------------------------------------------------------------------------
      23                 :             :  */
      24                 :             : 
      25                 :             : #include "postgres_fe.h"
      26                 :             : 
      27                 :             : #include "common/config_info.h"
      28                 :             : 
      29                 :             : static const char *progname;
      30                 :             : 
      31                 :             : /*
      32                 :             :  * Table of known information items
      33                 :             :  *
      34                 :             :  * Be careful to keep this in sync with the help() display.
      35                 :             :  */
      36                 :             : typedef struct
      37                 :             : {
      38                 :             :     const char *switchname;
      39                 :             :     const char *configname;
      40                 :             : } InfoItem;
      41                 :             : 
      42                 :             : static const InfoItem info_items[] = {
      43                 :             :     {"--bindir", "BINDIR"},
      44                 :             :     {"--docdir", "DOCDIR"},
      45                 :             :     {"--htmldir", "HTMLDIR"},
      46                 :             :     {"--includedir", "INCLUDEDIR"},
      47                 :             :     {"--pkgincludedir", "PKGINCLUDEDIR"},
      48                 :             :     {"--includedir-server", "INCLUDEDIR-SERVER"},
      49                 :             :     {"--libdir", "LIBDIR"},
      50                 :             :     {"--pkglibdir", "PKGLIBDIR"},
      51                 :             :     {"--localedir", "LOCALEDIR"},
      52                 :             :     {"--mandir", "MANDIR"},
      53                 :             :     {"--sharedir", "SHAREDIR"},
      54                 :             :     {"--sysconfdir", "SYSCONFDIR"},
      55                 :             :     {"--pgxs", "PGXS"},
      56                 :             :     {"--configure", "CONFIGURE"},
      57                 :             :     {"--cc", "CC"},
      58                 :             :     {"--cppflags", "CPPFLAGS"},
      59                 :             :     {"--cflags", "CFLAGS"},
      60                 :             :     {"--cflags_sl", "CFLAGS_SL"},
      61                 :             :     {"--ldflags", "LDFLAGS"},
      62                 :             :     {"--ldflags_ex", "LDFLAGS_EX"},
      63                 :             :     {"--ldflags_sl", "LDFLAGS_SL"},
      64                 :             :     {"--libs", "LIBS"},
      65                 :             :     {"--version", "VERSION"},
      66                 :             :     {NULL, NULL}
      67                 :             : };
      68                 :             : 
      69                 :             : 
      70                 :             : static void
      71                 :           1 : help(void)
      72                 :             : {
      73                 :           1 :     printf(_("\n%s provides information about the installed version of PostgreSQL.\n\n"), progname);
      74                 :           1 :     printf(_("Usage:\n"));
      75                 :           1 :     printf(_("  %s [OPTION]...\n\n"), progname);
      76                 :           1 :     printf(_("Options:\n"));
      77                 :           1 :     printf(_("  --bindir              show location of user executables\n"));
      78                 :           1 :     printf(_("  --docdir              show location of documentation files\n"));
      79                 :           1 :     printf(_("  --htmldir             show location of HTML documentation files\n"));
      80                 :           1 :     printf(_("  --includedir          show location of C header files of the client\n"
      81                 :             :              "                        interfaces\n"));
      82                 :           1 :     printf(_("  --pkgincludedir       show location of other C header files\n"));
      83                 :           1 :     printf(_("  --includedir-server   show location of C header files for the server\n"));
      84                 :           1 :     printf(_("  --libdir              show location of object code libraries\n"));
      85                 :           1 :     printf(_("  --pkglibdir           show location of dynamically loadable modules\n"));
      86                 :           1 :     printf(_("  --localedir           show location of locale support files\n"));
      87                 :           1 :     printf(_("  --mandir              show location of manual pages\n"));
      88                 :           1 :     printf(_("  --sharedir            show location of architecture-independent support files\n"));
      89                 :           1 :     printf(_("  --sysconfdir          show location of system-wide configuration files\n"));
      90                 :           1 :     printf(_("  --pgxs                show location of extension makefile\n"));
      91                 :           1 :     printf(_("  --configure           show options given to \"configure\" script when\n"
      92                 :             :              "                        PostgreSQL was built\n"));
      93                 :           1 :     printf(_("  --cc                  show CC value used when PostgreSQL was built\n"));
      94                 :           1 :     printf(_("  --cppflags            show CPPFLAGS value used when PostgreSQL was built\n"));
      95                 :           1 :     printf(_("  --cflags              show CFLAGS value used when PostgreSQL was built\n"));
      96                 :           1 :     printf(_("  --cflags_sl           show CFLAGS_SL value used when PostgreSQL was built\n"));
      97                 :           1 :     printf(_("  --ldflags             show LDFLAGS value used when PostgreSQL was built\n"));
      98                 :           1 :     printf(_("  --ldflags_ex          show LDFLAGS_EX value used when PostgreSQL was built\n"));
      99                 :           1 :     printf(_("  --ldflags_sl          show LDFLAGS_SL value used when PostgreSQL was built\n"));
     100                 :           1 :     printf(_("  --libs                show LIBS value used when PostgreSQL was built\n"));
     101                 :           1 :     printf(_("  --version             show the PostgreSQL version\n"));
     102                 :           1 :     printf(_("  -?, --help            show this help, then exit\n"));
     103                 :           1 :     printf(_("\nWith no arguments, all known items are shown.\n\n"));
     104                 :           1 :     printf(_("Report bugs to <%s>.\n"), PACKAGE_BUGREPORT);
     105                 :           1 :     printf(_("%s home page: <%s>\n"), PACKAGE_NAME, PACKAGE_URL);
     106                 :           1 : }
     107                 :             : 
     108                 :             : static void
     109                 :           1 : advice(void)
     110                 :             : {
     111                 :           1 :     fprintf(stderr, _("Try \"%s --help\" for more information.\n"), progname);
     112                 :           1 : }
     113                 :             : 
     114                 :             : static void
     115                 :         555 : show_item(const char *configname,
     116                 :             :           ConfigData *configdata,
     117                 :             :           size_t configdata_len)
     118                 :             : {
     119         [ +  + ]:       13320 :     for (size_t i = 0; i < configdata_len; i++)
     120                 :             :     {
     121         [ +  + ]:       12765 :         if (strcmp(configname, configdata[i].name) == 0)
     122                 :         555 :             printf("%s\n", configdata[i].setting);
     123                 :             :     }
     124                 :         555 : }
     125                 :             : 
     126                 :             : int
     127                 :         556 : main(int argc, char **argv)
     128                 :             : {
     129                 :             :     ConfigData *configdata;
     130                 :             :     size_t      configdata_len;
     131                 :             :     char        my_exec_path[MAXPGPATH];
     132                 :             : 
     133                 :         556 :     set_pglocale_pgservice(argv[0], PG_TEXTDOMAIN("pg_config"));
     134                 :             : 
     135                 :         556 :     progname = get_progname(argv[0]);
     136                 :             : 
     137                 :             :     /* check for --help */
     138         [ +  + ]:        1112 :     for (int i = 1; i < argc; i++)
     139                 :             :     {
     140   [ +  +  -  + ]:         557 :         if (strcmp(argv[i], "--help") == 0 || strcmp(argv[i], "-?") == 0)
     141                 :             :         {
     142                 :           1 :             help();
     143                 :           1 :             exit(0);
     144                 :             :         }
     145                 :             :     }
     146                 :             : 
     147         [ -  + ]:         555 :     if (find_my_exec(argv[0], my_exec_path) < 0)
     148                 :             :     {
     149                 :           0 :         fprintf(stderr, _("%s: could not find own program executable\n"), progname);
     150                 :           0 :         exit(1);
     151                 :             :     }
     152                 :             : 
     153                 :         555 :     configdata = get_configdata(my_exec_path, &configdata_len);
     154                 :             :     /* no arguments -> print everything */
     155         [ +  + ]:         555 :     if (argc < 2)
     156                 :             :     {
     157         [ +  + ]:          24 :         for (size_t i = 0; i < configdata_len; i++)
     158                 :          23 :             printf("%s = %s\n", configdata[i].name, configdata[i].setting);
     159                 :           1 :         exit(0);
     160                 :             :     }
     161                 :             : 
     162                 :             :     /* otherwise print requested items */
     163         [ +  + ]:        1109 :     for (int i = 1; i < argc; i++)
     164                 :             :     {
     165                 :             :         int         j;
     166                 :             : 
     167         [ +  + ]:       11433 :         for (j = 0; info_items[j].switchname != NULL; j++)
     168                 :             :         {
     169         [ +  + ]:       11432 :             if (strcmp(argv[i], info_items[j].switchname) == 0)
     170                 :             :             {
     171                 :         555 :                 show_item(info_items[j].configname,
     172                 :             :                           configdata, configdata_len);
     173                 :         555 :                 break;
     174                 :             :             }
     175                 :             :         }
     176         [ +  + ]:         556 :         if (info_items[j].switchname == NULL)
     177                 :             :         {
     178                 :           1 :             fprintf(stderr, _("%s: invalid argument: %s\n"),
     179                 :           1 :                     progname, argv[i]);
     180                 :           1 :             advice();
     181                 :           1 :             exit(1);
     182                 :             :         }
     183                 :             :     }
     184                 :             : 
     185                 :         553 :     return 0;
     186                 :             : }
        

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