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) 1996-2025, 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 2 : help(void)
72 : {
73 2 : printf(_("\n%s provides information about the installed version of PostgreSQL.\n\n"), progname);
74 2 : printf(_("Usage:\n"));
75 2 : printf(_(" %s [OPTION]...\n\n"), progname);
76 2 : printf(_("Options:\n"));
77 2 : printf(_(" --bindir show location of user executables\n"));
78 2 : printf(_(" --docdir show location of documentation files\n"));
79 2 : printf(_(" --htmldir show location of HTML documentation files\n"));
80 2 : printf(_(" --includedir show location of C header files of the client\n"
81 : " interfaces\n"));
82 2 : printf(_(" --pkgincludedir show location of other C header files\n"));
83 2 : printf(_(" --includedir-server show location of C header files for the server\n"));
84 2 : printf(_(" --libdir show location of object code libraries\n"));
85 2 : printf(_(" --pkglibdir show location of dynamically loadable modules\n"));
86 2 : printf(_(" --localedir show location of locale support files\n"));
87 2 : printf(_(" --mandir show location of manual pages\n"));
88 2 : printf(_(" --sharedir show location of architecture-independent support files\n"));
89 2 : printf(_(" --sysconfdir show location of system-wide configuration files\n"));
90 2 : printf(_(" --pgxs show location of extension makefile\n"));
91 2 : printf(_(" --configure show options given to \"configure\" script when\n"
92 : " PostgreSQL was built\n"));
93 2 : printf(_(" --cc show CC value used when PostgreSQL was built\n"));
94 2 : printf(_(" --cppflags show CPPFLAGS value used when PostgreSQL was built\n"));
95 2 : printf(_(" --cflags show CFLAGS value used when PostgreSQL was built\n"));
96 2 : printf(_(" --cflags_sl show CFLAGS_SL value used when PostgreSQL was built\n"));
97 2 : printf(_(" --ldflags show LDFLAGS value used when PostgreSQL was built\n"));
98 2 : printf(_(" --ldflags_ex show LDFLAGS_EX value used when PostgreSQL was built\n"));
99 2 : printf(_(" --ldflags_sl show LDFLAGS_SL value used when PostgreSQL was built\n"));
100 2 : printf(_(" --libs show LIBS value used when PostgreSQL was built\n"));
101 2 : printf(_(" --version show the PostgreSQL version\n"));
102 2 : printf(_(" -?, --help show this help, then exit\n"));
103 2 : printf(_("\nWith no arguments, all known items are shown.\n\n"));
104 2 : printf(_("Report bugs to <%s>.\n"), PACKAGE_BUGREPORT);
105 2 : printf(_("%s home page: <%s>\n"), PACKAGE_NAME, PACKAGE_URL);
106 2 : }
107 :
108 : static void
109 2 : advice(void)
110 : {
111 2 : fprintf(stderr, _("Try \"%s --help\" for more information.\n"), progname);
112 2 : }
113 :
114 : static void
115 824 : show_item(const char *configname,
116 : ConfigData *configdata,
117 : size_t configdata_len)
118 : {
119 : int i;
120 :
121 19776 : for (i = 0; i < configdata_len; i++)
122 : {
123 18952 : if (strcmp(configname, configdata[i].name) == 0)
124 824 : printf("%s\n", configdata[i].setting);
125 : }
126 824 : }
127 :
128 : int
129 826 : main(int argc, char **argv)
130 : {
131 : ConfigData *configdata;
132 : size_t configdata_len;
133 : char my_exec_path[MAXPGPATH];
134 : int i;
135 : int j;
136 :
137 826 : set_pglocale_pgservice(argv[0], PG_TEXTDOMAIN("pg_config"));
138 :
139 826 : progname = get_progname(argv[0]);
140 :
141 : /* check for --help */
142 1652 : for (i = 1; i < argc; i++)
143 : {
144 828 : if (strcmp(argv[i], "--help") == 0 || strcmp(argv[i], "-?") == 0)
145 : {
146 2 : help();
147 2 : exit(0);
148 : }
149 : }
150 :
151 824 : if (find_my_exec(argv[0], my_exec_path) < 0)
152 : {
153 0 : fprintf(stderr, _("%s: could not find own program executable\n"), progname);
154 0 : exit(1);
155 : }
156 :
157 824 : configdata = get_configdata(my_exec_path, &configdata_len);
158 : /* no arguments -> print everything */
159 824 : if (argc < 2)
160 : {
161 48 : for (i = 0; i < configdata_len; i++)
162 46 : printf("%s = %s\n", configdata[i].name, configdata[i].setting);
163 2 : exit(0);
164 : }
165 :
166 : /* otherwise print requested items */
167 1646 : for (i = 1; i < argc; i++)
168 : {
169 17346 : for (j = 0; info_items[j].switchname != NULL; j++)
170 : {
171 17344 : if (strcmp(argv[i], info_items[j].switchname) == 0)
172 : {
173 824 : show_item(info_items[j].configname,
174 : configdata, configdata_len);
175 824 : break;
176 : }
177 : }
178 826 : if (info_items[j].switchname == NULL)
179 : {
180 2 : fprintf(stderr, _("%s: invalid argument: %s\n"),
181 2 : progname, argv[i]);
182 2 : advice();
183 2 : exit(1);
184 : }
185 : }
186 :
187 820 : return 0;
188 : }
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